chore: reorganize dev tools into dev/ directory and consolidate configsHEAD main

Move CI, dev tools, and configs from root-level scattered locations into a unified `dev/` directory structure. Update all references across build scripts, documentation, and editor configurations. Also consolidate editor config generation into build.rs for automated synchronization of rust-analyzer settings across VS Code and Zed.
author: 魏曹先生 <1992414357@qq.com> 2026-08-19 05:54:00 +0800
committer: 魏曹先生 <1992414357@qq.com> 2026-08-19 06:15:20 +0800
commit: ec9edc294fd5e7e29977fc7b0e6fb953422bc0e2 (patch)
tree: bbf89ef4457b8de8a8a9bca5668045d612d27572 /dev
parent: 06dfc27194c11e1d1033c292c759a1c5d82e780b (diff)
66 files changed, 8423 insertions, 0 deletions
diff --git a/dev/ci/Cargo.lock b/dev/ci/Cargo.lock
new file mode 100644
index 0000000..796176a
--- /dev/null
+++ b/dev/ci/Cargo.lock
@@ -0,0 +1,777 @@
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+ "mio",
+ "pin-project-lite",
+ "signal-hook-registry",
+ "tokio-macros",
+ "windows-sys",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "2.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78773a2a397f451582ce068015985c33193cf6dea8b74d2a639fe457b2f07b0e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.3",
+]
+
+[[package]]
+name = "toml"
+version = "0.8.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc1beb996b9d83529a9e75c17a1686767d148d70663143c7854d8b4a09ced362"
+dependencies = [
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "0.6.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22cddaf88f4fbc13c51aebbf5f8eceb5c7c5a9da2ac40a13519eb5b0a0e8f11c"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "toml_edit"
+version = "0.22.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41fe8c660ae4257887cf66394862d21dbca4a6ddd26f04a3560410406a2f819a"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_write",
+ "winnow",
+]
+
+[[package]]
+name = "toml_write"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d99f8c9a7727884afe522e9bd5edbfc91a3312b36a77b5fb8926e4c31a41801"
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
+
+[[package]]
+name = "unicode-width"
+version = "0.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"
+
+[[package]]
+name = "unicode-width"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4ac048d71ede7ee76d585517add45da530660ef4390e49b098733c6e897f254"
+
+[[package]]
+name = "unit-prefix"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81e544489bf3d8ef66c953931f56617f423cd4b5494be343d9b9d3dda037b9a3"
+
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.127"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b70935747edd64d89de3efa29d73789b806c15798f8e7dca4d8ac356b50ce70"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.127"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77775f8f3f7217702089053b94958f8f54061a3f663417df76e19cbdcca29bc1"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.127"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e11d33f857dc2fb11b8bc75aee111aa9cbeb12cd9f25efd3d4c2a3dd4e235284"
+dependencies = [
+ "bumpalo",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.127"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ef64dbcc55df09c7e5a46182d181c2cfa3e925f3da937ea764728b4bbb9dcbf"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
+
+[[package]]
+name = "windows-sys"
+version = "0.61.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
+dependencies = [
+ "windows-link",
+]
+
+[[package]]
+name = "winnow"
+version = "0.7.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df79d97927682d2fd8adb29682d1140b343be4ac0f08fd68b7765d9c059d3945"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"
diff --git a/dev/ci/Cargo.toml b/dev/ci/Cargo.toml
new file mode 100644
index 0000000..c96043b
--- /dev/null
+++ b/dev/ci/Cargo.toml
@@ -0,0 +1,47 @@
+# This CI system is built on Mingling and is used to validate the next
+# version of Mingling.
+
+[package]
+name = "mingling-ci-system"
+edition = "2024"
+version = "0.1.0"
+publish = false
+
+[workspace]
+
+[dependencies]
+# NOTE: Do not use the current version of Mingling. The CI must be built on an
+# earlier version than the mainline Mingling.
+#
+# > You know the reason! ... the **grandfather paradox**
+mingling = { version = "0.4.0", features = [
+    "async",
+    "dispatch_tree",
+    "extras",
+    "pathf",
+    "picker",
+] }
+
+just_progress = "0.1.3"
+colored = "3.1.1"
+indicatif = "0.18.4"
+tokio = { version = "1.53.1", features = [
+    "rt",
+    "rt-multi-thread",
+    "macros",
+    "process",
+] }
+
+prettytable-rs = "0.10.0"
+toml = "0.8"
+just_template = "0.2.1"
+just_fmt = "0.2.1"
+serde = { version = "1.0.229", features = ["derive"] }
+serde_json = "1.0.151"
+
+[build-dependencies]
+mingling = { version = "0.4.0", features = [
+    "build",
+    "dispatch_tree",
+    "pathf"
+] }
diff --git a/dev/ci/build.rs b/dev/ci/build.rs
new file mode 100644
index 0000000..e0bcc0c
--- /dev/null
+++ b/dev/ci/build.rs
@@ -0,0 +1,6 @@
+use mingling::build::analyze_and_build_type_mapping;
+
+fn main() {
+    analyze_and_build_type_mapping().unwrap();
+}
+
diff --git a/dev/ci/help.txt b/dev/ci/help.txt
new file mode 100644
index 0000000..de006bb
--- /dev/null
+++ b/dev/ci/help.txt
@@ -0,0 +1,34 @@
+This program is used to check the code quality of the Mingling project itself.
+
+USAGE: cargo ci <FLAGS> [SUBCOMMAND] <ARGS...>
+
+FLAGS:
+  -h, --help                       Print this help page
+  -q, --quiet                      Quiet output
+
+COMMANDS:
+  UTILS:
+   report-collect                  Collect and organize all inspection reports
+   report-clean                    Clean up all reports
+
+   git-lock                        Temporarily commit the workspace for CI
+   git-unlock                      Restore the workspace after CI
+
+   show-features                   Print the docs.rs feature list of mingling
+   show-manifests                  Print all crate paths that need to be checked
+
+  TOOLS:
+   example-refresh                 Regenerate example docs module and examples index
+   docsify-refresh                 Fix docsify code boxes and regenerate sidebars
+   features-refresh                Regenerate the features module
+
+  TASKS:
+   markdown-check <PATH>           Verify rust code blocks in one markdown file
+   markdown-check-all              Verify rust code blocks in all configured markdown files
+   markdown-compare <PATH> <PATH>  Compare the structure of two markdown files/dirs
+   markdown-compare-all            Compare all translated docs against the reference
+   build-check                     Build all crates
+   clippy-check                    Run clippy with -D warnings on all crates
+   test-all                        Test all crates
+   example-check                   Build examples and run their test.toml cases
+   docs-check                      Build mingling docs with -D warnings
diff --git a/dev/ci/src/bin/ci.rs b/dev/ci/src/bin/ci.rs
new file mode 100644
index 0000000..5b1d748
--- /dev/null
+++ b/dev/ci/src/bin/ci.rs
@@ -0,0 +1,30 @@
+use mingling::setup::{
+    ConfirmSetup, DirectoryEnvironmentSetup, ExitCodeSetup,
+    picker::{ConfirmFlagSetup, HelpFlagSetup, QuietFlagSetup},
+};
+
+use mingling_ci_system::ThisProgram;
+use mingling_ci_system::res::*;
+
+#[tokio::main]
+async fn main() {
+    let mut program = ThisProgram::new();
+
+    // Plugins
+    program.with_setup(ExitCodeSetup::default());
+    program.with_setup(DirectoryEnvironmentSetup::default());
+
+    program.with_setup(HelpFlagSetup::default());
+    program.with_setup(ConfirmFlagSetup::default());
+    program.with_setup(QuietFlagSetup::default());
+
+    program.with_setup(ConfirmSetup);
+
+    // CI Plugins
+    program.with_setup(ManifestsSetup);
+    program.with_setup(FeaturesSetup);
+    program.with_setup(CrateConfigSetup);
+    program.with_setup(ReportSetup);
+
+    program.exec_and_exit().await;
+}
diff --git a/dev/ci/src/cmd.rs b/dev/ci/src/cmd.rs
new file mode 100644
index 0000000..b9a02dc
--- /dev/null
+++ b/dev/ci/src/cmd.rs
@@ -0,0 +1,6 @@
+pub(crate) mod cmd_git_lock;
+pub(crate) mod cmd_git_unlock;
+pub(crate) mod cmd_report_clean;
+pub(crate) mod cmd_report_collect;
+pub(crate) mod cmd_show_features;
+pub(crate) mod cmd_show_manifests;
diff --git a/dev/ci/src/cmd/cmd_git_lock.rs b/dev/ci/src/cmd/cmd_git_lock.rs
new file mode 100644
index 0000000..0e9bf22
--- /dev/null
+++ b/dev/ci/src/cmd/cmd_git_lock.rs
@@ -0,0 +1,77 @@
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{buffer, command, r_println, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::git::{CI_TEMP_COMMIT_MESSAGE, LOCK_FILE, TEMP_COMMIT_MESSAGE, run_git, worktree_clean};
+use crate::res::{CargoError, MessagePrinter};
+
+/// Temporarily commits the workspace so CI can run on a stable tree.
+///
+/// First pins the current HEAD to the `mingling/bkup` backup branch (created
+/// or force-reset). When the tree is dirty, all changes are packed into a
+/// plain `TEMP` commit first so they can be restored later; the `CI TEMP`
+/// commit then carries only the `MINGLING-CI-CHECKING` marker file, whose
+/// content (`true`/`false`) tells `git-unlock` which restore path to take.
+#[command(node = "git-lock")]
+pub fn git_lock() -> Next {
+    if let Err(e) = run_git(["branch", "-f", "mingling/bkup", "HEAD"]) {
+        return ErrorGitLock(e).to_chain();
+    }
+
+    let dirty = !worktree_clean();
+    if dirty {
+        if let Err(e) = run_git(["add", "."]) {
+            return ErrorGitLock(e).to_chain();
+        }
+        if let Err(e) = run_git(["commit", "-m", TEMP_COMMIT_MESSAGE]) {
+            return ErrorGitLock(e).to_chain();
+        }
+    }
+
+    let marker = if dirty { "true" } else { "false" };
+    if let Err(e) = std::fs::write(LOCK_FILE, marker) {
+        return ErrorGitLock(format!("failed to create {LOCK_FILE}: {e}")).to_chain();
+    }
+
+    if let Err(e) = run_git(["add", "."]) {
+        return ErrorGitLock(e).to_chain();
+    }
+    if let Err(e) = run_git(["commit", "-m", CI_TEMP_COMMIT_MESSAGE]) {
+        return ErrorGitLock(e).to_chain();
+    }
+
+    ResultGitLock { dirty }.to_chain()
+}
+
+/// Whether the tree was dirty (a base `TEMP` commit exists) when locking.
+#[derive(Grouped)]
+pub struct ResultGitLock {
+    dirty: bool,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorGitLock(pub String);
+
+#[renderer(buffer)]
+pub fn render_git_lock(r: ResultGitLock) {
+    if r.dirty {
+        r_println!("Locked: dirty workspace committed for CI");
+    } else {
+        r_println!("Locked: clean workspace marked for CI");
+    }
+}
+
+#[renderer]
+pub fn render_error_git_lock(
+    e: ErrorGitLock,
+    error: &CargoError,
+    exit_code: &mut ResExitCode,
+) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![format!("Git-Lock: {}", e.0)]);
+    exit_code.exit_code = 1;
+    render_result
+}
diff --git a/dev/ci/src/cmd/cmd_git_unlock.rs b/dev/ci/src/cmd/cmd_git_unlock.rs
new file mode 100644
index 0000000..41efefc
--- /dev/null
+++ b/dev/ci/src/cmd/cmd_git_unlock.rs
@@ -0,0 +1,116 @@
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{arg, buffer, command, r_println, renderer},
+    picker::{EntryPicker, value::Flag},
+    res::ResExitCode,
+};
+
+use crate::git::{LOCK_FILE, TEMP_COMMIT_MARK, head_message, run_git, worktree_clean};
+use crate::res::{CargoError, MessagePrinter};
+use crate::{Entry, Next};
+
+/// Undoes a CI temporary commit created by [`crate::cmd::cmd_git_lock`].
+///
+/// Only acts when the HEAD commit message contains `CI TEMP` (case-sensitive).
+/// The restore path is picked by the marker file content:
+///
+/// - `true`: a base `TEMP` commit with the dirty changes sits below; restore
+///   by hard-resetting past the marker commit, then soft-resetting and
+///   unstaging to put the user's changes back into the working tree.
+/// - `false`: the tree was clean; a single hard reset back to the original
+///   HEAD is enough.
+///
+/// When the working tree is dirty (e.g. CI left tracked changes behind) the
+/// restore still runs, but the command reports a non-zero exit code so the
+/// caller knows the CI phase contaminated the repository. With `--show-diff`
+/// the diff of those changes is printed before they are discarded.
+#[command(node = "git-unlock")]
+// `#[command]` rewrites an owned first param into the entry type, so the args
+// must be passed by value even though the body only reads them.
+#[allow(clippy::needless_pass_by_value)]
+pub fn git_unlock(args: Entry) -> Next {
+    let head = head_message().unwrap_or_default();
+    if !head.contains(TEMP_COMMIT_MARK) {
+        return ErrorGitUnlock(format!("HEAD is not a CI temporary commit: `{head}`")).to_chain();
+    }
+
+    // Record dirtiness before restoring: the restore discards those changes.
+    let dirty = !worktree_clean();
+
+    // The marker file lives in the HEAD (CI TEMP) commit, so it is readable
+    // from the working tree; a missing marker falls back to the clean path.
+    let based_on_dirty =
+        std::fs::read_to_string(LOCK_FILE).is_ok_and(|content| content.trim() == "true");
+
+    if dirty && *args.pick(&arg![show_diff: Flag]).unwrap() {
+        show_diff();
+    }
+
+    if let Err(e) = undo_ci_phase(based_on_dirty) {
+        return ErrorGitUnlock(e).to_chain();
+    }
+
+    ResultGitUnlock { dirty }.to_chain()
+}
+
+/// Prints the tracked changes the CI run left behind, before the restore
+/// discards them. Untracked files are not shown (they are removed by clean).
+fn show_diff() {
+    let Ok(diff) = run_git(["diff", "HEAD"]) else {
+        return;
+    };
+    if diff.is_empty() {
+        return;
+    }
+    println!("{diff}");
+}
+
+/// Restores the workspace, keeping the user's pre-lock changes.
+///
+/// With a base `TEMP` commit (`true`) the marker commit is dropped by a hard
+/// reset to `HEAD~1`, the `TEMP` commit is unwrapped into the staging area by
+/// a soft reset, and a plain reset unstages it back into the working tree.
+/// Without one (`false`) a single hard reset to `HEAD~1` removes the marker
+/// commit and lands on the original HEAD.
+fn undo_ci_phase(based_on_dirty: bool) -> Result<(), String> {
+    run_git(["reset", "--hard", "HEAD~1"])?;
+    if based_on_dirty {
+        // Unwrap the `TEMP` commit into the staging area, then unstage it
+        // back into the working tree.
+        run_git(["reset", "--soft", "HEAD~1"])?;
+        run_git(["reset"])?;
+    }
+    std::fs::remove_file(LOCK_FILE).ok();
+    Ok(())
+}
+
+/// Whether the working tree was dirty when the unlock started.
+#[derive(Grouped)]
+pub struct ResultGitUnlock {
+    dirty: bool,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorGitUnlock(pub String);
+
+#[renderer(buffer)]
+pub fn render_git_unlock(r: ResultGitUnlock, exit_code: &mut ResExitCode) {
+    if r.dirty {
+        r_println!("Unlocked: workspace restored (working tree was dirty)");
+        exit_code.exit_code = 1;
+    } else {
+        r_println!("Unlocked: workspace restored");
+    }
+}
+
+#[renderer]
+pub fn render_error_git_unlock(
+    e: ErrorGitUnlock,
+    error: &CargoError,
+    exit_code: &mut ResExitCode,
+) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![format!("Git-Unlock: {}", e.0)]);
+    exit_code.exit_code = 1;
+    render_result
+}
diff --git a/dev/ci/src/cmd/cmd_report_clean.rs b/dev/ci/src/cmd/cmd_report_clean.rs
new file mode 100644
index 0000000..976851e
--- /dev/null
+++ b/dev/ci/src/cmd/cmd_report_clean.rs
@@ -0,0 +1,54 @@
+use std::path::PathBuf;
+
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{buffer, command, r_println, renderer},
+};
+
+use crate::Next;
+use crate::reporter::{COLLECT_DIR, REPORT_PATH};
+use crate::res::{CargoError, MessagePrinter};
+
+/// Removes collected logs and the generated report.
+#[command(node = "report-clean")]
+pub fn report_clean() -> Next {
+    let mut removed = Vec::new();
+    for path in [PathBuf::from(COLLECT_DIR), PathBuf::from(REPORT_PATH)] {
+        match std::fs::remove_dir_all(&path).or_else(|_| std::fs::remove_file(&path)) {
+            Ok(()) => removed.push(path),
+            Err(e) if e.kind() == std::io::ErrorKind::NotFound => {}
+            Err(e) => {
+                return ErrorReportClean(format!("failed to remove {}: {e}", path.display()))
+                    .to_chain();
+            }
+        }
+    }
+    ResultReportClean { removed }.to_chain()
+}
+
+/// Paths removed by `report-clean`.
+#[derive(Grouped)]
+pub struct ResultReportClean {
+    pub removed: Vec<PathBuf>,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorReportClean(pub String);
+
+#[renderer(buffer)]
+pub fn render_report_clean(r: ResultReportClean) {
+    if r.removed.is_empty() {
+        r_println!("Report data already clean");
+    } else {
+        for path in r.removed {
+            r_println!("Removed {}", path.display());
+        }
+    }
+}
+
+#[renderer]
+pub fn render_error_report_clean(e: ErrorReportClean, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![format!("Report: {}", e.0)]);
+    render_result
+}
diff --git a/dev/ci/src/cmd/cmd_report_collect.rs b/dev/ci/src/cmd/cmd_report_collect.rs
new file mode 100644
index 0000000..2eff074
--- /dev/null
+++ b/dev/ci/src/cmd/cmd_report_collect.rs
@@ -0,0 +1,150 @@
+use std::collections::{BTreeMap, HashMap};
+use std::path::PathBuf;
+
+use just_template::Template;
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{buffer, command, r_println, renderer},
+};
+
+use crate::Next;
+use crate::reporter::{COLLECT_DIR, REPORT_PATH};
+use crate::res::{CargoError, MessagePrinter, ResCollectLogs};
+
+const REPORT_TEMPLATE: &str = include_str!("../../tmpls/report.md");
+const TASK_SECTION_TEMPLATE: &str = include_str!("../../tmpls/task_section.md");
+
+/// Maps a package to its per-OS pass/fail status.
+type OsStatuses = BTreeMap<String, bool>;
+
+/// A row in a task section: item name and its per-OS statuses.
+type TaskRow<'a> = (&'a String, &'a OsStatuses);
+
+/// Rows grouped by task name.
+type RowsByTask<'a> = BTreeMap<&'a String, Vec<TaskRow<'a>>>;
+
+#[command(node = "report-collect")]
+pub fn report_collect(logs: &ResCollectLogs) -> Next {
+    if !PathBuf::from(COLLECT_DIR).is_dir() {
+        return ErrorNoCollectDir.to_chain();
+    }
+
+    // Group rows by task: task -> [(item, os_statuses)].
+    let by_task: RowsByTask =
+        logs.statuses
+            .iter()
+            .fold(BTreeMap::new(), |mut acc, ((task, item), os_statuses)| {
+                acc.entry(task).or_default().push((item, os_statuses));
+                acc
+            });
+
+    // Render one section per task (table rows + this task's failures).
+    let mut fail_count = 0;
+    let mut sections: Vec<HashMap<String, String>> = Vec::new();
+    for (task, rows) in by_task {
+        let mut row_arms = Vec::new();
+        let mut fail_arms = Vec::new();
+        for (item, os_statuses) in rows {
+            let location = logs
+                .locations
+                .get(&(task.clone(), item.clone()))
+                .cloned()
+                .unwrap_or_default();
+            row_arms.push(HashMap::from([
+                ("item_name".to_string(), item.clone()),
+                ("location".to_string(), location),
+                (
+                    "pass_win".to_string(),
+                    pass_cell(os_statuses.get("Windows")),
+                ),
+                (
+                    "pass_linux".to_string(),
+                    pass_cell(os_statuses.get("Linux")),
+                ),
+                ("pass_mac".to_string(), pass_cell(os_statuses.get("MacOS"))),
+            ]));
+
+            for (os, ok) in os_statuses {
+                if !ok {
+                    let stdout = logs
+                        .err_outputs
+                        .get(&(task.clone(), os.clone(), item.clone()))
+                        .cloned()
+                        .unwrap_or_default();
+                    fail_arms.push(HashMap::from([
+                        ("item_name".to_string(), item.clone()),
+                        ("stdout".to_string(), stdout),
+                    ]));
+                    fail_count += 1;
+                }
+            }
+        }
+
+        let mut section = Template::from(TASK_SECTION_TEMPLATE);
+        section.insert_param("task_name".to_string(), task.clone());
+        *section.add_impl("rows".to_string()) = row_arms;
+        *section.add_impl("fails".to_string()) = fail_arms;
+        sections.push(HashMap::from([(
+            "section".to_string(),
+            section.expand().unwrap_or_default(),
+        )]));
+    }
+
+    let mut template = Template::from(REPORT_TEMPLATE);
+
+    template.insert_param("date".to_string(), logs.git.date.clone());
+    template.insert_param("commit_hash".to_string(), logs.git.commit_hash.clone());
+    *template.add_impl("task_sections".to_string()) = sections;
+
+    let expanded = template.expand().unwrap_or_default();
+    let output = PathBuf::from(REPORT_PATH);
+    let parent = output.parent().expect("output path has a parent");
+
+    if let Err(e) = std::fs::create_dir_all(parent).and_then(|()| std::fs::write(&output, expanded))
+    {
+        return ErrorReportWrite(format!("failed to write {}: {e}", output.display())).to_chain();
+    }
+
+    ResultCollectResults { output, fail_count }.to_chain()
+}
+
+fn pass_cell(status: Option<&bool>) -> String {
+    match status {
+        Some(true) => "✅".to_string(),
+        Some(false) => "❌".to_string(),
+        None => "—".to_string(),
+    }
+}
+
+/// The generated report.
+#[derive(Grouped)]
+pub struct ResultCollectResults {
+    pub output: PathBuf,
+    pub fail_count: usize,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorNoCollectDir;
+
+#[derive(Grouped, Default)]
+pub struct ErrorReportWrite(pub String);
+
+#[renderer(buffer)]
+pub fn render_collect_results(r: ResultCollectResults) {
+    r_println!("Collected {} failing logs", r.fail_count);
+    r_println!("Report generated at {}", r.output.display());
+}
+
+#[renderer]
+pub fn render_error_no_collect_dir(_: ErrorNoCollectDir, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![format!("No collect directory: {COLLECT_DIR}")]);
+    render_result
+}
+
+#[renderer]
+pub fn render_error_report_write(e: ErrorReportWrite, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![format!("Report: {}", e.0)]);
+    render_result
+}
diff --git a/dev/ci/src/cmd/cmd_show_features.rs b/dev/ci/src/cmd/cmd_show_features.rs
new file mode 100644
index 0000000..5fff0c5
--- /dev/null
+++ b/dev/ci/src/cmd/cmd_show_features.rs
@@ -0,0 +1,26 @@
+use mingling::{
+    Grouped,
+    macros::{buffer, command, r_println, renderer},
+};
+
+use crate::res::ResFeatureList;
+
+#[command(node = "show-features")]
+pub fn show_features(features: &ResFeatureList) -> ResultShowFeatures {
+    ResultShowFeatures {
+        features: features.list.clone(),
+    }
+}
+
+/// The docs.rs feature list of `mingling`.
+#[derive(Grouped)]
+pub struct ResultShowFeatures {
+    pub features: Vec<String>,
+}
+
+#[renderer(buffer)]
+pub fn render_show_features(r: ResultShowFeatures) {
+    for feature in r.features {
+        r_println!("{feature}");
+    }
+}
diff --git a/dev/ci/src/cmd/cmd_show_manifests.rs b/dev/ci/src/cmd/cmd_show_manifests.rs
new file mode 100644
index 0000000..2be82d2
--- /dev/null
+++ b/dev/ci/src/cmd/cmd_show_manifests.rs
@@ -0,0 +1,71 @@
+use std::path::PathBuf;
+
+use mingling::{
+    Grouped,
+    macros::{buffer, command, r_println, renderer},
+};
+
+use prettytable::{
+    Cell, Row, Table,
+    format::{FormatBuilder, LinePosition, LineSeparator},
+};
+
+use crate::res::Manifests;
+
+#[command(node = "show-manifests")]
+pub fn show_manifests(manifests: &Manifests) -> ResultPrintManifests {
+    let mut entries: Vec<ManifestEntry> = manifests
+        .package_dirs
+        .iter()
+        .map(|(name, path)| ManifestEntry {
+            name: name.clone(),
+            path: path.clone(),
+        })
+        .collect();
+    entries.sort_by(|a, b| a.path.cmp(&b.path));
+    ResultPrintManifests { entries }
+}
+
+/// All manifests the CI will check, sorted by path.
+#[derive(Grouped)]
+pub struct ResultPrintManifests {
+    pub entries: Vec<ManifestEntry>,
+}
+
+#[derive(Debug, Clone)]
+pub struct ManifestEntry {
+    pub name: String,
+    pub path: PathBuf,
+}
+
+#[renderer(buffer)]
+pub fn render_print_manifests(r: ResultPrintManifests) {
+    let mut table = Table::new();
+
+    table.set_format(
+        FormatBuilder::new()
+            .column_separator('│')
+            .borders('│')
+            .separator(LinePosition::Top, LineSeparator::new('─', '┬', '┌', '┐'))
+            .separator(LinePosition::Title, LineSeparator::new('─', '┼', '├', '┤'))
+            .separator(LinePosition::Bottom, LineSeparator::new('─', '┴', '└', '┘'))
+            .padding(1, 1)
+            .build(),
+    );
+
+    table.set_titles(Row::new(vec![
+        Cell::new("#"),
+        Cell::new("Package-Name"),
+        Cell::new("Package-Path"),
+    ]));
+
+    for (index, entry) in r.entries.iter().enumerate() {
+        table.add_row(Row::new(vec![
+            Cell::new(&(index + 1).to_string()),
+            Cell::new(&entry.name),
+            Cell::new(&entry.path.to_string_lossy()),
+        ]));
+    }
+
+    r_println!("{table}");
+}
diff --git a/dev/ci/src/examples.rs b/dev/ci/src/examples.rs
new file mode 100644
index 0000000..92d3475
--- /dev/null
+++ b/dev/ci/src/examples.rs
@@ -0,0 +1,186 @@
+//! Example binary testing: build each example and run its `test.toml` cases.
+
+use std::process::Output;
+
+/// A single `[[runs]]` entry of an example's `test.toml`.
+pub(crate) struct TestCase {
+    input: Vec<String>,
+    expect: Expect,
+}
+
+struct Expect {
+    exit_code: i32,
+    result: String,
+}
+
+/// One example and its test cases.
+pub(crate) struct ExampleCase {
+    name: String,
+    cases: Vec<TestCase>,
+}
+
+/// Outcome of checking one example.
+pub(crate) struct ExampleOutcome {
+    pub name: String,
+    pub location: String,
+    pub ok: bool,
+    pub output: String,
+}
+
+/// Loads `examples/<name>/test.toml` for every example that has one, in
+/// alphabetical order of the example directory name.
+pub(crate) fn load_test_configs() -> Vec<ExampleCase> {
+    let mut configs = Vec::new();
+    if let Ok(entries) = std::fs::read_dir("examples") {
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if !path.is_dir() {
+                continue;
+            }
+            let test_toml = path.join("test.toml");
+            if !test_toml.is_file() {
+                continue;
+            }
+            let name = path
+                .file_name()
+                .and_then(|n| n.to_str())
+                .unwrap_or_default()
+                .to_string();
+            let Ok(content) = std::fs::read_to_string(&test_toml) else {
+                continue;
+            };
+            let Ok(table) = content.parse::<toml::Value>() else {
+                continue;
+            };
+            let Some(cases) = parse_cases(&table) else {
+                continue;
+            };
+            configs.push(ExampleCase { name, cases });
+        }
+    }
+    configs.sort_by(|a, b| a.name.cmp(&b.name));
+    configs
+}
+
+fn parse_cases(table: &toml::Value) -> Option<Vec<TestCase>> {
+    let runs = table.get("runs")?.as_array()?;
+    let mut cases = Vec::new();
+    for run in runs {
+        let input: Vec<String> = run
+            .get("input")?
+            .as_array()?
+            .iter()
+            .filter_map(|v| v.as_str().map(str::to_string))
+            .collect();
+        let expect = run.get("expect")?;
+        let exit_code = expect
+            .get("exit-code")?
+            .as_integer()
+            .and_then(|e| i32::try_from(e).ok())
+            .unwrap_or(-1);
+        let result = expect
+            .get("result")
+            .and_then(|r| r.as_str())
+            .unwrap_or_default()
+            .to_string();
+        cases.push(TestCase {
+            input,
+            expect: Expect { exit_code, result },
+        });
+    }
+    Some(cases)
+}
+
+/// Builds the example, then runs all of its test cases.
+pub(crate) fn check_example(example: ExampleCase) -> ExampleOutcome {
+    let location = format!("./examples/{}", example.name);
+
+    // Phase 1: build.
+    let manifest = format!("examples/{}/Cargo.toml", example.name);
+    let build = std::process::Command::new("cargo")
+        .args(["build", "--manifest-path", &manifest])
+        .output();
+    match build {
+        Ok(output) if !output.status.success() => ExampleOutcome {
+            name: example.name,
+            location,
+            ok: false,
+            output: build_error(&output),
+        },
+        Err(e) => ExampleOutcome {
+            name: example.name,
+            location,
+            ok: false,
+            output: format!("failed to run cargo: {e}"),
+        },
+        Ok(_) => {
+            // Phase 2: run the test cases against the built binary.
+            let mut failures = Vec::new();
+            for case in &example.cases {
+                if let Err(detail) = run_case(&example.name, case) {
+                    failures.push(detail);
+                }
+            }
+            ExampleOutcome {
+                name: example.name,
+                location,
+                ok: failures.is_empty(),
+                output: failures.join("\n\n"),
+            }
+        }
+    }
+}
+
+/// Runs a single test case against the built binary.
+fn run_case(name: &str, case: &TestCase) -> Result<(), String> {
+    let exe = if cfg!(target_os = "windows") {
+        ".exe"
+    } else {
+        ""
+    };
+    let binary = format!(".temp/target/debug/{name}{exe}");
+
+    let output = std::process::Command::new(&binary)
+        .args(&case.input)
+        .output();
+    let Ok(output) = output else {
+        return Err(format!("failed to run {binary}"));
+    };
+
+    let actual_exit_code = output.status.code().unwrap_or(-1);
+    let actual_stdout = String::from_utf8_lossy(&output.stdout).trim().to_string();
+    let actual_stderr = String::from_utf8_lossy(&output.stderr).trim().to_string();
+
+    let exit_ok = actual_exit_code == case.expect.exit_code;
+    let result_ok =
+        actual_stdout == case.expect.result || actual_stdout.contains(&case.expect.result);
+
+    if exit_ok && result_ok {
+        return Ok(());
+    }
+
+    let mut details = vec![format!("input: {}", case.input.join(" "))];
+    if !exit_ok {
+        details.push(format!(
+            "expected exit code {}, actual {actual_exit_code}",
+            case.expect.exit_code
+        ));
+    }
+    if !result_ok {
+        details.push(format!("expected output {:?}", case.expect.result));
+        details.push(format!("actual stdout {actual_stdout:?}"));
+        if !actual_stderr.is_empty() {
+            details.push(format!("actual stderr {actual_stderr:?}"));
+        }
+    }
+    Err(details.join("\n"))
+}
+
+/// Tail of a failed build's combined output.
+fn build_error(output: &Output) -> String {
+    let mut log = String::from_utf8_lossy(&output.stdout).into_owned();
+    log.push_str(&String::from_utf8_lossy(&output.stderr));
+    let lines: Vec<&str> = log.lines().collect();
+    let tail = &lines[lines.len().saturating_sub(20)..];
+    format!("build failed\n{}", tail.join("\n"))
+}
diff --git a/dev/ci/src/git.rs b/dev/ci/src/git.rs
new file mode 100644
index 0000000..a6fab2c
--- /dev/null
+++ b/dev/ci/src/git.rs
@@ -0,0 +1,69 @@
+//! Thin wrappers around the `git` CLI used by the CI phase lock/unlock pair.
+
+use std::ffi::OsStr;
+use std::process::Command;
+
+/// Marker file created by `git-lock` in the CI temporary commit; its content
+/// is `true` when the tree was dirty (a base TEMP commit exists below) or
+/// `false` when it was clean. `git-unlock` reads it to pick the restore path.
+pub(crate) const LOCK_FILE: &str = "MINGLING-CI-CHECKING";
+
+/// First temporary commit: packs the dirty workspace changes so they can be
+/// restored later. Only created when the tree is dirty.
+pub(crate) const TEMP_COMMIT_MESSAGE: &str = "[DO NOT PUSH] TEMP [DO NOT PUSH]";
+
+/// Second temporary commit: carries the marker file, and its message is what
+/// `git-unlock` matches to confirm the CI phase.
+pub(crate) const CI_TEMP_COMMIT_MESSAGE: &str = "[DO NOT PUSH] CI TEMP [DO NOT PUSH]";
+
+/// Case-sensitive substring that identifies a CI temporary commit in the HEAD
+/// commit message.
+pub(crate) const TEMP_COMMIT_MARK: &str = "CI TEMP";
+
+/// Runs `git <args>`, returning stdout on success.
+///
+/// # Errors
+///
+/// Returns the git error message (stderr) when the command exits non-zero, or
+/// when git itself cannot be spawned.
+pub(crate) fn run_git<I, S>(args: I) -> Result<String, String>
+where
+    I: IntoIterator<Item = S>,
+    S: AsRef<OsStr>,
+{
+    let output = Command::new("git")
+        .args(args)
+        .output()
+        .map_err(|e| format!("failed to run git: {e}"))?;
+    if output.status.success() {
+        Ok(String::from_utf8_lossy(&output.stdout).into_owned())
+    } else {
+        Err(String::from_utf8_lossy(&output.stderr).trim().to_string())
+    }
+}
+
+/// Returns `true` when the working tree has no tracked changes relative to
+/// HEAD. Git failures count as "not clean" so the caller falls back to the
+/// marker-file path.
+///
+/// Uses the porcelain `git diff --quiet HEAD` rather than the plumbing
+/// `git diff-index --quiet HEAD`: after a full compile the source files'
+/// mtimes can be newer than the index stat records even though their content
+/// is unchanged, and `diff-index` reports that stale stat as a change. The
+/// porcelain diff refreshes the index first (via `diff.autoRefreshIndex`),
+/// so it only reports real content differences.
+pub(crate) fn worktree_clean() -> bool {
+    Command::new("git")
+        .args(["diff", "--quiet", "HEAD", "--"])
+        .status()
+        .is_ok_and(|status| status.success())
+}
+
+/// The subject line of the HEAD commit.
+///
+/// # Errors
+///
+/// Returns the git error message when the log command fails.
+pub(crate) fn head_message() -> Result<String, String> {
+    run_git(["log", "-1", "--pretty=%s"]).map(|subject| subject.trim().to_string())
+}
diff --git a/dev/ci/src/lib.rs b/dev/ci/src/lib.rs
new file mode 100644
index 0000000..32a0cbd
--- /dev/null
+++ b/dev/ci/src/lib.rs
@@ -0,0 +1,28 @@
+#![deny(clippy::pedantic)]
+#![deny(clippy::nursery)]
+#![allow(clippy::redundant_pub_crate)]
+#![allow(clippy::missing_const_for_fn)]
+
+use mingling::macros::{gen_program, help};
+
+pub(crate) mod cmd;
+pub(crate) mod git;
+pub(crate) mod task;
+
+/// Mingling CI's Resources
+pub mod res;
+
+/// Log exporter for CI reports
+pub mod reporter;
+
+pub(crate) mod examples;
+pub(crate) mod markdown;
+pub(crate) mod progress;
+pub(crate) mod tools;
+
+#[help]
+pub fn render_fallback(_: EntryFallback) -> String {
+    include_str!("../help.txt").to_string()
+}
+
+gen_program!();
diff --git a/dev/ci/src/markdown.rs b/dev/ci/src/markdown.rs
new file mode 100644
index 0000000..75f2cbe
--- /dev/null
+++ b/dev/ci/src/markdown.rs
@@ -0,0 +1,3 @@
+pub(crate) mod compare;
+pub(crate) mod project;
+pub(crate) mod test;
diff --git a/dev/ci/src/markdown/compare.rs b/dev/ci/src/markdown/compare.rs
new file mode 100644
index 0000000..1bf3c57
--- /dev/null
+++ b/dev/ci/src/markdown/compare.rs
@@ -0,0 +1,203 @@
+//! Structural comparison of markdown docs (reference vs translation).
+//!
+//! For each file pair the comparison uses a *structural signature*: one token
+//! per line, classifying headings (both Markdown `#` and HTML `<hN>`), fenced
+//! code blocks (including their language tag), `@@@` hidden-compilation lines,
+//! blank lines, blockquotes, lists and plain text. Translated text is allowed
+//! to differ; the structure is not.
+
+use std::path::{Path, PathBuf};
+
+/// Collects all `.md` files under `dir`, returned relative to it.
+pub(crate) fn collect_md_files(dir: &Path) -> Vec<PathBuf> {
+    let mut out = Vec::new();
+    let mut stack = vec![dir.to_path_buf()];
+    while let Some(current) = stack.pop() {
+        let Ok(entries) = std::fs::read_dir(&current) else {
+            continue;
+        };
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if path.is_dir() {
+                stack.push(path);
+            } else if path.extension().is_some_and(|e| e == "md") {
+                out.push(path.strip_prefix(dir).unwrap_or(&path).to_path_buf());
+            }
+        }
+    }
+    out.sort();
+    out
+}
+
+/// Compares the structural signatures of two markdown files.
+///
+/// Returns the human-readable diff lines (up to a small window) on the first
+/// structural difference.
+pub(crate) fn compare_signature(ref_path: &Path, lang_path: &Path) -> Result<(), Vec<String>> {
+    let ref_content = std::fs::read_to_string(ref_path).unwrap_or_default();
+    let lang_content = std::fs::read_to_string(lang_path).unwrap_or_default();
+
+    let ref_sig = signature_of(&ref_content);
+    let lang_sig = signature_of(&lang_content);
+
+    if ref_sig == lang_sig {
+        return Ok(());
+    }
+
+    let ref_lines: Vec<&str> = ref_content.lines().collect();
+    let lang_lines: Vec<&str> = lang_content.lines().collect();
+
+    let mut diffs = Vec::new();
+    let mut window = 0;
+    let max = ref_sig.len().max(lang_sig.len());
+    for i in 0..max {
+        let ref_tok = ref_sig.get(i);
+        let lang_tok = lang_sig.get(i);
+        if ref_tok == lang_tok {
+            continue;
+        }
+        if window >= 5 {
+            diffs.push(format!("... ({}-line window truncated)", max - i));
+            break;
+        }
+        window += 1;
+        let ref_line = ref_lines.get(i).copied().unwrap_or("<missing>");
+        let lang_line = lang_lines.get(i).copied().unwrap_or("<missing>");
+        diffs.push(format!("line {}", i + 1));
+        diffs.push(format!(
+            "expect `{}` {}",
+            token_label(ref_tok.map_or("<eof>", String::as_str)),
+            display_line(ref_line)
+        ));
+        diffs.push(format!(
+            "found  `{}` {}",
+            token_label(lang_tok.map_or("<eof>", String::as_str)),
+            display_line(lang_line)
+        ));
+        if ref_sig.len() != lang_sig.len() && window >= 5 {
+            diffs.push(format!(
+                "note: reference has {} lines, translation has {} lines",
+                ref_sig.len(),
+                lang_sig.len()
+            ));
+            break;
+        }
+    }
+    if diffs.is_empty() {
+        diffs.push("signatures differ in length (see line count note)".to_string());
+    }
+    Err(diffs)
+}
+
+/// Builds the structural signature of a markdown file.
+fn signature_of(content: &str) -> Vec<String> {
+    let mut sig = Vec::new();
+    let mut in_fence = false;
+    let mut fence_lang = String::new();
+
+    for raw_line in content.lines() {
+        let line = raw_line.trim();
+
+        if in_fence {
+            if line.starts_with("```") {
+                in_fence = false;
+                sig.push(format!("F:{fence_lang}"));
+            } else if line.starts_with("@@@") {
+                sig.push("A".to_string());
+            } else if line.is_empty() {
+                sig.push("B".to_string());
+            } else {
+                sig.push("P".to_string());
+            }
+            continue;
+        }
+
+        if line.starts_with("```") {
+            in_fence = true;
+            fence_lang = line.trim_start_matches("```").trim().to_string();
+            sig.push(format!("F:{fence_lang}"));
+        } else if line.starts_with('#') {
+            let level = line.chars().take_while(|c| *c == '#').count();
+            sig.push(format!("H{level}"));
+        } else if line.starts_with("<h") || line.starts_with("</h") {
+            // HTML headings (e.g. `<h1 align="center">` / `</h1>`)
+            let level = line
+                .trim_start_matches(['<', '/'])
+                .chars()
+                .next()
+                .and_then(|c| c.to_digit(10))
+                .unwrap_or(1);
+            sig.push(format!("H{level}"));
+        } else if line.starts_with("@@@") {
+            sig.push("A".to_string());
+        } else if line.is_empty() {
+            sig.push("B".to_string());
+        } else if line.starts_with('>') {
+            sig.push("Q".to_string());
+        } else if is_list_line(line) {
+            sig.push("L".to_string());
+        } else {
+            sig.push("P".to_string());
+        }
+    }
+    sig
+}
+
+/// Human-readable label for a structural token.
+fn token_label(token: &str) -> String {
+    match token {
+        "B" => "blank".to_string(),
+        "A" => "@@@".to_string(),
+        "Q" => "quote".to_string(),
+        "L" => "list".to_string(),
+        "P" => "text".to_string(),
+        t if t.starts_with('H') => format!("heading-{}", &t[1..]),
+        t if t.starts_with("F:") => {
+            let lang = &t[2..];
+            if lang.is_empty() {
+                "fence".to_string()
+            } else {
+                format!("fence:{lang}")
+            }
+        }
+        _ => token.to_string(),
+    }
+}
+
+/// Renders a source line for display: blank lines become `<blank>`.
+fn display_line(line: &str) -> String {
+    if line.trim().is_empty() {
+        "<blank>".to_string()
+    } else {
+        truncate(line)
+    }
+}
+
+fn truncate(line: &str) -> String {
+    const MAX: usize = 60;
+    if line.chars().count() <= MAX {
+        line.to_string()
+    } else {
+        let cut: String = line.chars().take(MAX).collect();
+        format!("{cut}...")
+    }
+}
+
+fn is_list_line(line: &str) -> bool {
+    let trimmed = line.trim_start();
+    trimmed.starts_with("- ")
+        || trimmed.starts_with("* ")
+        || trimmed.starts_with("+ ")
+        || is_numbered_list(trimmed)
+}
+
+/// A numbered list item: `1. text`, `1) text`, `10. text`, ...
+fn is_numbered_list(line: &str) -> bool {
+    let digit_count = line.chars().take_while(char::is_ascii_digit).count();
+    if digit_count == 0 {
+        return false;
+    }
+    let rest = &line[digit_count..];
+    (rest.starts_with(". ") || rest.starts_with(") "))
+        && rest.chars().nth(1).is_some_and(|c| c == ' ' || c == '\t')
+}
diff --git a/dev/ci/src/markdown/project.rs b/dev/ci/src/markdown/project.rs
new file mode 100644
index 0000000..d781b7e
--- /dev/null
+++ b/dev/ci/src/markdown/project.rs
@@ -0,0 +1,347 @@
+//! Model of a testable rust code block extracted from markdown: its dependency
+//! configuration (features + deps) and the code itself.
+
+use std::fmt::Write as _;
+use std::path::Path;
+
+/// A single testable `rust` code block, modeled as a test project.
+pub(crate) struct MarkdownTestProject {
+    pub features: Vec<String>,
+    pub deps: Vec<(String, String)>,
+    pub code: String,
+    pub is_build_time: bool,
+    pub has_main: bool,
+    pub has_gen_program: bool,
+    pub source_file: String,
+    pub line: usize,
+}
+
+impl MarkdownTestProject {
+    /// FNV-1a 64-bit hash over the dependency configuration (features + deps).
+    ///
+    /// Blocks with the same hash share one temporary crate and avoid redundant
+    /// recompilation. The input is sorted so the hash is stable.
+    #[must_use]
+    pub fn compute_hash(&self) -> String {
+        let mut features: Vec<&str> = self.features.iter().map(String::as_str).collect();
+        features.sort_unstable();
+        let mut dep_names: Vec<&str> = self.deps.iter().map(|(n, _)| n.as_str()).collect();
+        dep_names.sort_unstable();
+        let mut dep_versions: Vec<&str> = self.deps.iter().map(|(_, v)| v.as_str()).collect();
+        dep_versions.sort_unstable();
+        let mut deps: Vec<String> = self.deps.iter().map(|(n, v)| format!("{n}={v}")).collect();
+        deps.sort();
+
+        let canonical = format!(
+            "{}\n{}\n{}\n{}",
+            features.join(","),
+            dep_names.join(","),
+            dep_versions.join(","),
+            deps.join(",")
+        );
+
+        // FNV-1a 64-bit — stable across runs (no random seed).
+        let mut hash: u64 = 0xcbf2_9ce4_8422_2325;
+        for &byte in canonical.as_bytes() {
+            hash ^= u64::from(byte);
+            hash = hash.wrapping_mul(0x0000_0100_0000_01b3);
+        }
+        format!("{hash:016x}")
+    }
+}
+
+/// Parses all fenced `rust` blocks from markdown content.
+///
+/// Blocks marked `// NOT VERIFIED` are skipped.
+pub(crate) fn parse_markdown(content: &str, source_file: &str) -> Vec<MarkdownTestProject> {
+    let mut projects = Vec::new();
+    let lines: Vec<&str> = content.lines().collect();
+    let mut i = 0;
+    while i < lines.len() {
+        if lines[i].trim() == "```rust" {
+            if let Some(proj) = parse_block(&lines, i, source_file) {
+                projects.push(proj);
+            }
+            while i < lines.len() && lines[i].trim() != "```" {
+                i += 1;
+            }
+        }
+        i += 1;
+    }
+    projects
+}
+
+/// Parses a single code block starting at a `rust` fence line.
+fn parse_block(lines: &[&str], start: usize, source_file: &str) -> Option<MarkdownTestProject> {
+    let mut code_lines: Vec<String> = Vec::new();
+    let mut features: Vec<String> = Vec::new();
+    let mut not_verified = false;
+    let mut deps: Vec<(String, String)> = Vec::new();
+    let mut has_main = false;
+    let mut has_gen_program = false;
+    let mut is_build_time = false;
+
+    let mut idx = start + 1;
+    let mut in_header = true;
+
+    while idx < lines.len() {
+        let raw_line = lines[idx];
+        let trimmed = raw_line.trim();
+
+        if trimmed == "```" {
+            break;
+        }
+
+        // `@@@` lines: hidden in the rendered docs (filtered by a docsify
+        // plugin) but must still compile.
+        if let Some(stripped) = trimmed.strip_prefix("@@@") {
+            in_header = false;
+            let code = stripped.trim_start();
+            if code.contains("fn main") {
+                has_main = true;
+            }
+            if code.contains("gen_program!") {
+                has_gen_program = true;
+            }
+            code_lines.push(code.to_string());
+            idx += 1;
+            continue;
+        }
+
+        if in_header && trimmed == "// NOT VERIFIED" {
+            not_verified = true;
+            idx += 1;
+            continue;
+        }
+        if in_header && trimmed == "// BUILD TIME" {
+            is_build_time = true;
+            idx += 1;
+            continue;
+        }
+        if in_header && trimmed.starts_with("// ") {
+            if let Some(feat_str) = trimmed.strip_prefix("// Features:") {
+                let feat_str = feat_str.trim();
+                if feat_str.starts_with('[') && feat_str.ends_with(']') {
+                    let inner = &feat_str[1..feat_str.len() - 1];
+                    if !inner.is_empty() {
+                        features = inner
+                            .split(',')
+                            .map(|s| s.trim().trim_matches('"').to_string())
+                            .filter(|s| !s.is_empty())
+                            .collect();
+                    }
+                }
+                idx += 1;
+                continue;
+            }
+            if trimmed == "// Dependencies:" {
+                idx += 1;
+                while idx < lines.len() {
+                    let next = lines[idx].trim();
+                    if next == "```" {
+                        break;
+                    }
+                    if let Some(dep_line) = next.strip_prefix("// ") {
+                        if let Some((name, ver)) = dep_line.split_once(" = ") {
+                            deps.push((
+                                name.trim().to_string(),
+                                ver.trim().trim_matches('"').to_string(),
+                            ));
+                        }
+                        idx += 1;
+                    } else {
+                        break;
+                    }
+                }
+                continue;
+            }
+        }
+
+        in_header = false;
+        if raw_line.contains("fn main") {
+            has_main = true;
+        }
+        if raw_line.contains("gen_program!") {
+            has_gen_program = true;
+        }
+        code_lines.push(raw_line.to_string());
+        idx += 1;
+    }
+
+    if code_lines.is_empty() || not_verified {
+        return None;
+    }
+
+    Some(MarkdownTestProject {
+        features,
+        deps,
+        code: code_lines.join("\n"),
+        is_build_time,
+        has_main,
+        has_gen_program,
+        source_file: source_file.to_string(),
+        line: start + 1,
+    })
+}
+
+/// Builds the extra `[dependencies]` entries declared by a block's
+/// `// Dependencies:` header comments.
+///
+/// Markdown blocks declare companion crates like this:
+///
+/// ```text
+/// // Dependencies:
+/// // serde = "1"
+/// // clap = "4"
+/// // tokio = { version = "1", features = ["full"] }
+/// ```
+///
+/// Each `name = value` pair becomes one dependency of the generated test
+/// crate (in addition to `mingling` itself), so doc blocks can freely use
+/// external crates without repeating the whole manifest.
+///
+/// # Special case: serde / clap
+///
+/// Doc blocks pervasively derive serialization and argument parsing:
+/// structural-renderer examples use `#[derive(Serialize)]`, the clap examples
+/// use `#[derive(Parser)]` — and those derives live behind the `derive`
+/// feature of `serde` / `clap`. Requiring every block to spell out
+/// `// serde = { version = "1", features = ["derive"] }` would be
+/// boilerplate repeated dozens of times, so the two crates automatically get
+/// `features = ["derive"]` appended.
+///
+/// Version values starting with `{` are inline tables (e.g. `tokio` with a
+/// `features` list above) and are passed through verbatim — they already
+/// carry their own features and must not be rewritten.
+fn build_extra_deps(proj: &MarkdownTestProject) -> String {
+    let mut extra_deps = String::new();
+    for (name, version) in &proj.deps {
+        if version.starts_with('{') {
+            // Inline table (path/features/…): the block already expressed its
+            // full dependency, so emit it unchanged.
+            let _ = writeln!(extra_deps, "{name} = {version}");
+        } else if name == "serde" || name == "clap" {
+            // serde/clap derive: `#[derive(Serialize, Deserialize)]` and
+            // `#[derive(Parser)]` are used everywhere in the docs; auto-enable
+            // the `derive` feature to keep blocks terse.
+            let _ = writeln!(
+                extra_deps,
+                "{name} = {{ version = \"{version}\", features = [\"derive\"] }}"
+            );
+        } else {
+            // Plain `name = "version"`.
+            let _ = writeln!(extra_deps, "{name} = \"{version}\"");
+        }
+    }
+    extra_deps
+}
+
+/// Generates the `Cargo.toml` for a project.
+///
+/// `manifest_path` is used to compute the relative path to the `mingling` crate.
+pub(crate) fn generate_cargo_toml(proj: &MarkdownTestProject, manifest_path: &Path) -> String {
+    let features_str = if proj.features.is_empty() {
+        String::new()
+    } else {
+        let feats: Vec<String> = proj.features.iter().map(|f| format!("\"{f}\"")).collect();
+        format!("features = [{}]", feats.join(", "))
+    };
+
+    let extra_deps = build_extra_deps(proj);
+
+    let mingling_path = find_mingling_relative_path(manifest_path);
+    let deps_section = if proj.features.is_empty() {
+        format!("[dependencies]\nmingling = {{ path = \"{mingling_path}\" }}\n{extra_deps}")
+    } else {
+        format!(
+            "[dependencies]\nmingling = {{ path = \"{mingling_path}\", {features_str} }}\n{extra_deps}"
+        )
+    };
+
+    // Build-time projects mirror the features into [build-dependencies] so
+    // build.rs sees the same feature set.
+    let build_deps_section = if proj.is_build_time {
+        let feats: Vec<String> = proj.features.iter().map(|f| format!("\"{f}\"")).collect();
+        let build_feats = if feats.is_empty() {
+            String::new()
+        } else {
+            format!("features = [{}]", feats.join(", "))
+        };
+        format!(
+            "\n[build-dependencies]\nmingling = {{ path = \"{mingling_path}\", {build_feats} }}\n"
+        )
+    } else {
+        String::new()
+    };
+
+    format!(
+        r#"[package]
+	name = "test-doc"
+	version = "0.0.0"
+	edition = "2024"
+
+{deps_section}{build_deps_section}
+[workspace]
+"#
+    )
+}
+
+/// Computes the relative path from a manifest's parent directory to `mingling`.
+///
+/// The process current directory is expected to be the project root.
+fn find_mingling_relative_path(manifest_path: &Path) -> String {
+    let manifest_dir = manifest_path
+        .parent()
+        .expect("manifest path has no parent directory");
+    let cwd = std::env::current_dir().expect("failed to get current directory");
+
+    let relative_to_root = manifest_dir.strip_prefix(&cwd).unwrap_or(manifest_dir);
+    let depth = relative_to_root.components().count();
+
+    let mut result = String::new();
+    for _ in 0..depth {
+        result.push_str("../");
+    }
+    result.push_str("mingling");
+    result
+}
+
+/// Generates `main.rs` for a project.
+///
+/// Automatically prepends `use mingling::prelude::*;` and appends `fn main() {}`
+/// and `gen_program!()` when the block does not provide them.
+pub(crate) fn generate_main_rs(proj: &MarkdownTestProject) -> String {
+    let mut output = String::from("#![allow(dead_code)]\n#![allow(unused)]\n");
+
+    if !proj.code.contains("use mingling::prelude::*;") {
+        output.push_str("#[allow(unused_imports)]\nuse mingling::prelude::*;\n\n");
+    }
+    output.push_str(&proj.code);
+    output.push('\n');
+
+    if !proj.has_main {
+        output.push_str("\nfn main() {}\n");
+    }
+    if !proj.has_gen_program {
+        output.push_str("\nmingling::macros::gen_program!();\n");
+    }
+    output
+}
+
+/// Generates `build.rs` for a build-time project: the code wrapped in
+/// `fn main() { }` unless the block already provides one.
+pub(crate) fn generate_build_rs(proj: &MarkdownTestProject) -> String {
+    let mut output = String::from("#![allow(dead_code)]\n#![allow(unused)]\n");
+    if proj.has_main {
+        output.push_str(&proj.code);
+    } else {
+        output.push_str("fn main() {\n");
+        for line in proj.code.lines() {
+            output.push_str("    ");
+            output.push_str(line);
+            output.push('\n');
+        }
+        output.push_str("}\n");
+    }
+    output
+}
diff --git a/dev/ci/src/markdown/test.rs b/dev/ci/src/markdown/test.rs
new file mode 100644
index 0000000..8ecf18d
--- /dev/null
+++ b/dev/ci/src/markdown/test.rs
@@ -0,0 +1,152 @@
+//! Parallel execution of markdown test projects.
+
+use std::collections::BTreeMap;
+use std::path::{Path, PathBuf};
+
+use colored::Colorize;
+
+use crate::progress::task_progress_bar;
+
+use super::project::{
+    MarkdownTestProject, generate_build_rs, generate_cargo_toml, generate_main_rs,
+};
+
+/// Temporary root for the generated test crates.
+const TEMP_BASE: &str = ".temp/doc-test";
+
+/// Outcome of testing one code block.
+pub(crate) struct MarkdownBlockOutcome {
+    pub source_file: String,
+    pub line: usize,
+    pub ok: bool,
+    /// Failure detail; empty when `ok`.
+    pub output: String,
+}
+
+/// Runs the given projects in parallel.
+///
+/// Projects sharing a dependency hash share one temporary crate (written
+/// serially within the group); groups run in parallel. Progress is shown on
+/// stderr; failures print there too. Returns one outcome per block.
+pub(crate) async fn try_test_markdown_project(
+    projs: Vec<MarkdownTestProject>,
+) -> Vec<MarkdownBlockOutcome> {
+    // Group by dependency hash for crate sharing.
+    let mut groups: BTreeMap<String, Vec<MarkdownTestProject>> = BTreeMap::new();
+    for proj in projs {
+        groups.entry(proj.compute_hash()).or_default().push(proj);
+    }
+
+    let total: usize = groups.values().map(Vec::len).sum();
+    let pb = task_progress_bar(total, "Testing");
+    pb.set_message("blocks");
+
+    // One blocking task per group; blocks within a group are serial because
+    // they share the same crate directory.
+    let mut handles = Vec::new();
+    for (hash, blocks) in groups {
+        let pb = pb.clone();
+        handles.push(tokio::task::spawn_blocking(move || {
+            let crate_dir = PathBuf::from(TEMP_BASE).join(&hash);
+            let src_dir = crate_dir.join("src");
+            let manifest_path = crate_dir.join("Cargo.toml");
+            let cargo_toml = generate_cargo_toml(&blocks[0], &manifest_path);
+
+            let mut group_outcomes = Vec::new();
+            for proj in &blocks {
+                let label = format!("{}:{}", proj.source_file, proj.line);
+                pb.set_message(label.clone());
+
+                let main_rs = if proj.is_build_time {
+                    generate_build_rs(proj)
+                } else {
+                    generate_main_rs(proj)
+                };
+                let (ok, err) = build_block(
+                    &src_dir,
+                    &manifest_path,
+                    &cargo_toml,
+                    &main_rs,
+                    proj.is_build_time,
+                );
+                pb.inc(1);
+
+                if !ok {
+                    // Plain stderr: `pb.println` is swallowed on non-TTY (CI).
+                    eprintln!("  {} {label}", "failed".bold().bright_red());
+                    eprintln!("  {label} FAILED:\n{err}");
+                }
+                group_outcomes.push(MarkdownBlockOutcome {
+                    source_file: proj.source_file.clone(),
+                    line: proj.line,
+                    ok,
+                    output: err,
+                });
+            }
+            group_outcomes
+        }));
+    }
+
+    let mut all_outcomes = Vec::new();
+    for handle in handles {
+        if let Ok(group_outcomes) = handle.await {
+            all_outcomes.extend(group_outcomes);
+        }
+    }
+
+    pb.finish_and_clear();
+    all_outcomes
+}
+
+/// Writes the temporary crate files and runs `cargo check`.
+///
+/// When `is_build_time` is true, the content goes to `build.rs` with a stub
+/// `main.rs`; otherwise it goes to `src/main.rs`.
+fn build_block(
+    src_dir: &Path,
+    manifest_path: &Path,
+    cargo_toml: &str,
+    content: &str,
+    is_build_time: bool,
+) -> (bool, String) {
+    if let Err(e) = std::fs::create_dir_all(src_dir) {
+        return (false, format!("mkdir: {e}"));
+    }
+    if let Err(e) = std::fs::write(manifest_path, cargo_toml) {
+        return (false, format!("write Cargo.toml: {e}"));
+    }
+
+    if is_build_time {
+        let crate_dir = manifest_path
+            .parent()
+            .expect("manifest path has a parent directory");
+        if let Err(e) = std::fs::write(crate_dir.join("build.rs"), content) {
+            return (false, format!("write build.rs: {e}"));
+        }
+        if let Err(e) = std::fs::write(src_dir.join("main.rs"), "fn main() {}\n") {
+            return (false, format!("write main.rs: {e}"));
+        }
+    } else if let Err(e) = std::fs::write(src_dir.join("main.rs"), content) {
+        return (false, format!("write main.rs: {e}"));
+    }
+
+    let output = std::process::Command::new("cargo")
+        .args(["check", "--color=always", "--manifest-path"])
+        .arg(manifest_path)
+        .output();
+    match output {
+        Ok(output) if output.status.success() => (true, String::new()),
+        Ok(output) => {
+            let mut log = String::from_utf8_lossy(&output.stdout).into_owned();
+            log.push_str(&String::from_utf8_lossy(&output.stderr));
+            let lines: Vec<&str> = log.lines().collect();
+            let tail = &lines[lines.len().saturating_sub(20)..];
+            let exit = output
+                .status
+                .code()
+                .map_or_else(|| "?".to_string(), |c| c.to_string());
+            (false, format!("exit code {exit}\n{}", tail.join("\n")))
+        }
+        Err(e) => (false, format!("failed to run cargo: {e}")),
+    }
+}
diff --git a/dev/ci/src/progress.rs b/dev/ci/src/progress.rs
new file mode 100644
index 0000000..bd62ae1
--- /dev/null
+++ b/dev/ci/src/progress.rs
@@ -0,0 +1,24 @@
+//! Shared task progress bar.
+
+use colored::Colorize;
+use indicatif::{ProgressBar, ProgressStyle};
+
+/// Creates a task progress bar with the CI's standard style.
+///
+/// `prefix` is the phase label shown before the bar, right-aligned to 12
+/// columns (e.g. `Building`, `Clippy`, `Testing`). The caller sets the
+/// initial message and drives the position.
+pub(crate) fn task_progress_bar(len: usize, prefix: &str) -> ProgressBar {
+    let padding = " ".repeat(12usize.saturating_sub(prefix.len()));
+    let styled_prefix = format!("{padding}{}", prefix.bold().bright_cyan());
+    let pb = ProgressBar::new(len as u64);
+    pb.set_style(
+        ProgressStyle::default_bar()
+            .template(&format!(
+                "{styled_prefix} [{{bar:28}}] {{pos}}/{{len}}: {{msg}}"
+            ))
+            .unwrap()
+            .progress_chars("=> "),
+    );
+    pb
+}
diff --git a/dev/ci/src/reporter.rs b/dev/ci/src/reporter.rs
new file mode 100644
index 0000000..1a1ac08
--- /dev/null
+++ b/dev/ci/src/reporter.rs
@@ -0,0 +1,208 @@
+//! Minimal log exporter for CI reports.
+//!
+//! Writes per-package results into `collect/{task}/{platform}/{package}.{ok|err}`
+//! so that the [`crate::cmd::collect_results`] command can assemble the final
+//! report. The task name is set once per CI phase via [`set_task`].
+
+use std::collections::HashMap;
+use std::fs;
+use std::path::Path;
+use std::sync::{LazyLock, Mutex};
+
+/// Root of the collected CI logs (relative to the repo root).
+pub const COLLECT_DIR: &str = "./.temp/reports/collect";
+
+/// Generated report output (relative to the repo root).
+pub const REPORT_PATH: &str = "./.temp/reports/result.md";
+
+/// The platform a package check ran on.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Ord, PartialOrd)]
+pub enum ReportPlatform {
+    Windows,
+    Linux,
+    MacOS,
+}
+
+impl ReportPlatform {
+    /// Directory name used under the task folder.
+    const fn dir_name(self) -> &'static str {
+        match self {
+            Self::Windows => "Windows",
+            Self::Linux => "Linux",
+            Self::MacOS => "MacOS",
+        }
+    }
+}
+
+/// The outcome of a package check.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum ReportResult {
+    /// Check passed.
+    Ok,
+    /// Check failed, with the captured output.
+    Error(String),
+}
+
+/// Current task name (e.g. `Build-All`); set via [`set_task`].
+static CURRENT_TASK: Mutex<Option<String>> = Mutex::new(None);
+
+/// Pending success entries: `(item, location)`.
+type PendingOk = (String, String);
+
+/// Successful items pending a [`flush`], grouped by platform.
+static OK_BUFFER: LazyLock<Mutex<HashMap<ReportPlatform, Vec<PendingOk>>>> =
+    LazyLock::new(|| Mutex::new(HashMap::new()));
+
+/// Sets the task that subsequent [`export`] calls write under.
+///
+/// # Panics
+///
+/// Panics if the internal mutex is poisoned.
+pub fn set_task(task: &str) {
+    *CURRENT_TASK.lock().unwrap() = Some(task.to_string());
+}
+
+/// Exports one item result.
+///
+/// `item` and `location` are free-form strings chosen by the generator.
+/// Successes are buffered and written to the `ok` file by [`flush`]; failures
+/// write `{task}.{platform}.{item}.err` immediately (first line is the
+/// location). Errors are reported to stderr and otherwise ignored.
+///
+/// # Panics
+///
+/// Panics if the internal task mutex is poisoned.
+pub fn export(item: &str, location: &str, result: ReportResult) {
+    export_on(item, location, current_platform(), result);
+}
+
+/// The `ReportPlatform` for the currently compiling target.
+fn current_platform() -> ReportPlatform {
+    if cfg!(target_os = "windows") {
+        ReportPlatform::Windows
+    } else if cfg!(target_os = "macos") {
+        ReportPlatform::MacOS
+    } else {
+        ReportPlatform::Linux
+    }
+}
+
+/// Exports one item result for a specific platform.
+///
+/// `item` and `location` are free-form strings chosen by the generator.
+/// Successes are buffered and written to the `ok` file by [`flush`]; failures
+/// write `{task}.{platform}.{item}.err` immediately (first line is the
+/// location). Errors are reported to stderr and otherwise ignored.
+///
+/// # Panics
+///
+/// Panics if the internal task mutex is poisoned.
+pub fn export_on(item: &str, location: &str, platform: ReportPlatform, result: ReportResult) {
+    match result {
+        ReportResult::Ok => OK_BUFFER
+            .lock()
+            .unwrap()
+            .entry(platform)
+            .or_default()
+            .push((item.to_string(), location.to_string())),
+        ReportResult::Error(output) => write_err(item, location, platform, &output),
+    }
+}
+
+/// Writes buffered successes to `collect/{task}.{platform}.ok`, one `item` (or
+/// `item = location`) per line.
+///
+/// # Panics
+///
+/// Panics if the internal task mutex is poisoned.
+pub fn flush() {
+    let Some(task) = CURRENT_TASK.lock().unwrap().clone() else {
+        eprintln!("reporter: no current task; call reporter::set_task first");
+        return;
+    };
+
+    let buffered = std::mem::take(&mut *OK_BUFFER.lock().unwrap());
+    if buffered.is_empty() {
+        return;
+    }
+
+    if let Err(e) = fs::create_dir_all(COLLECT_DIR) {
+        eprintln!("reporter: failed to create {COLLECT_DIR}: {e}");
+        return;
+    }
+
+    for (platform, items) in buffered {
+        let lines: Vec<String> = items
+            .iter()
+            .map(|(item, location)| {
+                if location.is_empty() {
+                    item.clone()
+                } else {
+                    format!("{item} = {location}")
+                }
+            })
+            .collect();
+        let content = if lines.is_empty() {
+            String::new()
+        } else {
+            lines.join("\n") + "\n"
+        };
+        let platform_name = platform.dir_name();
+        let path = Path::new(COLLECT_DIR).join(format!("{task}.{platform_name}.ok"));
+        if let Err(e) = fs::write(&path, content) {
+            eprintln!("reporter: failed to write {}: {e}", path.display());
+        }
+    }
+}
+
+/// Writes a failure entry to `collect/{task}.{platform}.{item}.err`, with the
+/// location as the first line (empty when unknown).
+fn write_err(item: &str, location: &str, platform: ReportPlatform, output: &str) {
+    let Some(task) = CURRENT_TASK.lock().unwrap().clone() else {
+        eprintln!("reporter: no current task; call reporter::set_task first");
+        return;
+    };
+
+    if let Err(e) = fs::create_dir_all(COLLECT_DIR) {
+        eprintln!("reporter: failed to create {COLLECT_DIR}: {e}");
+        return;
+    }
+
+    let platform_name = platform.dir_name();
+    let path = Path::new(COLLECT_DIR).join(format!("{task}.{platform_name}.{item}.err"));
+    if let Err(e) = fs::write(&path, format!("{location}\n{output}")) {
+        eprintln!("reporter: failed to write {}: {e}", path.display());
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn export_writes_ok_and_err_files() {
+        set_task("reporter-test");
+        let platform_name = current_platform().dir_name();
+        let ok_path = Path::new(COLLECT_DIR).join(format!("reporter-test.{platform_name}.ok"));
+        let err_path =
+            Path::new(COLLECT_DIR).join(format!("reporter-test.{platform_name}.pkg-b.err"));
+        fs::remove_file(&ok_path).ok();
+        fs::remove_file(&err_path).ok();
+
+        export("pkg-a", "./pkg-a", ReportResult::Ok);
+        export("pkg-b", "./pkg-b", ReportResult::Error("boom".to_string()));
+        export("pkg-c", "", ReportResult::Ok); // no location
+        flush();
+
+        assert!(ok_path.is_file());
+        assert_eq!(
+            fs::read_to_string(&ok_path).unwrap(),
+            "pkg-a = ./pkg-a\npkg-c\n"
+        );
+        assert!(err_path.is_file());
+        assert_eq!(fs::read_to_string(&err_path).unwrap(), "./pkg-b\nboom");
+
+        fs::remove_file(ok_path).ok();
+        fs::remove_file(err_path).ok();
+    }
+}
diff --git a/dev/ci/src/res.rs b/dev/ci/src/res.rs
new file mode 100644
index 0000000..54ed503
--- /dev/null
+++ b/dev/ci/src/res.rs
@@ -0,0 +1,14 @@
+mod collect_logs;
+pub use collect_logs::*;
+
+mod crate_config;
+pub use crate_config::*;
+
+mod features;
+pub use features::*;
+
+mod manifests;
+pub use manifests::*;
+
+mod print;
+pub use print::*;
diff --git a/dev/ci/src/res/collect_logs.rs b/dev/ci/src/res/collect_logs.rs
new file mode 100644
index 0000000..6017168
--- /dev/null
+++ b/dev/ci/src/res/collect_logs.rs
@@ -0,0 +1,203 @@
+//! IO side of the report command: reads the collect directory once and keeps
+//! the parsed data in a resource, so chains only do computation.
+
+use std::collections::BTreeMap;
+
+use mingling::{Program, macros::program_setup};
+
+use crate::ThisProgram;
+use crate::reporter::COLLECT_DIR;
+
+/// Git commit date and short hash for the report.
+#[derive(Default, Clone, Debug)]
+pub struct GitInfo {
+    pub date: String,
+    pub commit_hash: String,
+}
+
+/// Parsed contents of the collect directory.
+#[derive(Default, Clone)]
+pub struct ResCollectLogs {
+    /// `(task, item) -> os -> ok`
+    pub statuses: BTreeMap<(String, String), BTreeMap<String, bool>>,
+    /// `(task, item) -> location`
+    pub locations: BTreeMap<(String, String), String>,
+    /// `(task, os, item) -> stripped error output (location line removed)`
+    pub err_outputs: BTreeMap<(String, String, String), String>,
+    pub git: GitInfo,
+}
+
+impl ResCollectLogs {
+    /// Reads the flat `collect/` directory — aggregate `{task}.{os}.ok` files
+    /// (`item` or `item = location` per line) and per-item
+    /// `{task}.{os}.{item}.err` files (first line is the location) — plus the
+    /// git info.
+    #[must_use]
+    pub fn read() -> Self {
+        let mut logs = Self::default();
+
+        if let Ok(entries) = std::fs::read_dir(COLLECT_DIR) {
+            for entry in entries.flatten() {
+                let file_name = entry.file_name().to_string_lossy().into_owned();
+                if let Some((task, os)) = parse_ok_name(&file_name) {
+                    // Aggregate success file: `item` or `item = location` per line.
+                    if let Ok(content) = std::fs::read_to_string(entry.path()) {
+                        for line in content.lines().filter(|l| !l.is_empty()) {
+                            let (item, location) = line
+                                .split_once('=')
+                                .map_or((line, ""), |(name, loc)| (name.trim(), loc.trim()));
+                            logs.statuses
+                                .entry((task.clone(), item.to_string()))
+                                .or_default()
+                                .insert(os.clone(), true);
+                            logs.locations
+                                .insert((task.clone(), item.to_string()), location.to_string());
+                        }
+                    }
+                } else if let Some((task, os, item)) = parse_err_name(&file_name) {
+                    let content = std::fs::read_to_string(entry.path()).unwrap_or_default();
+                    let mut lines = content.splitn(2, '\n');
+                    let location = lines.next().unwrap_or_default().to_string();
+                    let output = lines.next().unwrap_or_default().to_string();
+                    logs.statuses
+                        .entry((task.clone(), item.clone()))
+                        .or_default()
+                        .insert(os.clone(), false);
+                    logs.locations
+                        .insert((task.clone(), item.clone()), location);
+                    logs.err_outputs
+                        .insert((task, os, item), strip_ansi(&output));
+                }
+            }
+        }
+
+        logs.git = git_info();
+        logs
+    }
+}
+
+/// Parses a `{task}.{os}.ok` file name.
+fn parse_ok_name(file_name: &str) -> Option<(String, String)> {
+    let name = file_name.strip_suffix(".ok")?;
+    let mut parts = name.rsplitn(2, '.');
+    let os = parts.next()?.to_string();
+    let task = parts.next()?.to_string();
+    Some((task, os))
+}
+
+/// Parses a `{task}.{os}.{package}.err` file name.
+///
+/// Split from the right: package names cannot contain dots (cargo forbids
+/// them), while task names may.
+fn parse_err_name(file_name: &str) -> Option<(String, String, String)> {
+    let name = file_name.strip_suffix(".err")?;
+    let mut parts = name.rsplitn(3, '.');
+    let package = parts.next()?.to_string();
+    let os = parts.next()?.to_string();
+    let task = parts.next()?.to_string();
+    Some((task, os, package))
+}
+
+#[program_setup]
+pub fn report_setup(p: &mut Program<ThisProgram>) {
+    p.with_resource(ResCollectLogs::read());
+}
+
+/// Strips ANSI escape sequences from `input`.
+///
+/// Handles CSI (`ESC [ ...`), OSC (`ESC ] ...` terminated by BEL or `ESC \`)
+/// and other single-character escapes, while preserving UTF-8 text. Literal
+/// `^[` (caret-bracket, produced by some terminal captures) is normalized to
+/// `ESC` first.
+fn strip_ansi(input: &str) -> String {
+    // Normalize literal `^[` (0x5E 0x5B) to a real ESC byte.
+    let normalized = input.replace("^[", "\u{1b}");
+    let mut out = String::with_capacity(normalized.len());
+    let mut rest = normalized.as_str();
+    while let Some(idx) = rest.find('\u{1b}') {
+        out.push_str(&rest[..idx]);
+        rest = &rest[idx..];
+        rest = &rest[ansi_len(rest)..];
+    }
+    out.push_str(rest);
+    out
+}
+
+/// Byte length of the ANSI escape sequence starting at `s[0]` (`s[0]` is `ESC`).
+fn ansi_len(s: &str) -> usize {
+    let b = s.as_bytes();
+    match b.get(1) {
+        Some(b'[') => {
+            // CSI: `ESC [` params/intermediates (0x20-0x3F) then a final byte (0x40-0x7E).
+            let mut i = 2;
+            while i < b.len() {
+                let byte = b[i];
+                i += 1;
+                if (0x40..=0x7E).contains(&byte) {
+                    break;
+                }
+                if !(0x20..=0x3F).contains(&byte) {
+                    break;
+                }
+            }
+            i
+        }
+        Some(b']') => {
+            // OSC: `ESC ]` ... terminated by BEL (0x07) or `ESC \`.
+            let mut i = 2;
+            while i < b.len() {
+                let byte = b[i];
+                i += 1;
+                if byte == 0x07 {
+                    break;
+                }
+                if byte == 0x1b {
+                    if b.get(i) == Some(&b'\\') {
+                        i += 1;
+                    }
+                    break;
+                }
+            }
+            i
+        }
+        Some(_) => 2.min(b.len()),
+        None => 1,
+    }
+}
+
+/// Commit date (`YYYY-MM-DD`) and short commit hash; empty on failure.
+fn git_info() -> GitInfo {
+    let run = |args: &[&str]| {
+        std::process::Command::new("git")
+            .args(args)
+            .output()
+            .ok()
+            .filter(|o| o.status.success())
+            .map(|o| String::from_utf8_lossy(&o.stdout).trim().to_string())
+            .unwrap_or_default()
+    };
+    GitInfo {
+        date: run(&["log", "-1", "--format=%cs"]),
+        commit_hash: run(&["rev-parse", "--short", "HEAD"]),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::strip_ansi;
+
+    #[test]
+    fn strips_csi_and_osc_and_literal_caret() {
+        let input =
+            "\u{1b}[1m\u{1b}[92mok\u{1b}[0m \u{1b}]8;;https://x\u{1b}\\done\u{1b}]8;;\u{1b}\\\n";
+        assert_eq!(strip_ansi(input), "ok done\n");
+
+        // Literal `^[` (caret-bracket) captured by some terminals.
+        assert_eq!(strip_ansi("^[[31mred^[[0m"), "red");
+    }
+
+    #[test]
+    fn preserves_utf8() {
+        assert_eq!(strip_ansi("你好\u{1b}[1m世界！\u{1b}[0m"), "你好世界！");
+    }
+}
diff --git a/dev/ci/src/res/crate_config.rs b/dev/ci/src/res/crate_config.rs
new file mode 100644
index 0000000..b20e83d
--- /dev/null
+++ b/dev/ci/src/res/crate_config.rs
@@ -0,0 +1,79 @@
+use std::collections::HashMap;
+use std::path::Path;
+
+use mingling::{Program, macros::program_setup};
+
+use crate::ThisProgram;
+use crate::res::{Manifests, ResFeatureList};
+
+/// Per-crate CI overrides from `mingling-ci.toml` (optional, crate root).
+///
+/// Currently only `[test] command` is read; `clippy.command` / `build.command`
+/// will follow the same shape.
+#[derive(Default, Clone)]
+pub struct ResCrateConfig {
+    /// Package name -> test command argv (with `<<<features>>>` expanded).
+    test_commands: HashMap<String, Vec<String>>,
+}
+
+impl ResCrateConfig {
+    /// The configured `[test] command` for a package, if any.
+    #[must_use]
+    pub fn test_command(&self, package: &str) -> Option<&[String]> {
+        self.test_commands.get(package).map(Vec::as_slice)
+    }
+}
+
+#[program_setup]
+pub fn crate_config_setup(p: &mut Program<ThisProgram>) {
+    let features = p
+        .res::<ResFeatureList>()
+        .map(|f| f.list.clone())
+        .unwrap_or_default();
+    let joined_features = features.join(",");
+
+    let Some(manifests) = p.res::<Manifests>() else {
+        return;
+    };
+
+    let mut test_commands = HashMap::new();
+    for (name, manifest_path) in &manifests.package_dirs {
+        let config_path = manifest_path
+            .parent()
+            .unwrap_or_else(|| Path::new("."))
+            .join("mingling-ci.toml");
+
+        let Ok(content) = std::fs::read_to_string(&config_path) else {
+            continue;
+        };
+
+        let Ok(table) = content.parse::<toml::Value>() else {
+            continue;
+        };
+
+        let Some(command) = table
+            .get("test")
+            .and_then(|t| t.get("command"))
+            .and_then(|c| c.as_array())
+        else {
+            continue;
+        };
+
+        let argv: Vec<String> = command
+            .iter()
+            .filter_map(|v| v.as_str().map(str::to_string))
+            .collect();
+
+        if argv.is_empty() {
+            continue;
+        }
+
+        let argv = argv
+            .into_iter()
+            .map(|arg| arg.replace("<<<features>>>", &joined_features))
+            .collect();
+        test_commands.insert(name.clone(), argv);
+    }
+
+    p.with_resource(ResCrateConfig { test_commands });
+}
diff --git a/dev/ci/src/res/features.rs b/dev/ci/src/res/features.rs
new file mode 100644
index 0000000..8009514
--- /dev/null
+++ b/dev/ci/src/res/features.rs
@@ -0,0 +1,47 @@
+use mingling::{Program, macros::program_setup};
+
+use crate::ThisProgram;
+
+/// Manifest that declares the documented feature list.
+///
+/// Path is relative to the repo root (the CI's working directory).
+const FEATURES_MANIFEST: &str = "./mingling/Cargo.toml";
+
+/// The docs.rs feature list of `mingling`, the single source of truth for the
+/// feature combinations used by CI checks.
+#[derive(Default, Clone)]
+pub struct ResFeatureList {
+    pub list: Vec<String>,
+}
+
+#[program_setup]
+pub fn features_setup(p: &mut Program<ThisProgram>) {
+    p.with_resource(ResFeatureList {
+        list: docs_rs_features(),
+    });
+}
+
+/// Reads `[package.metadata.docs.rs].features` from `mingling/Cargo.toml`.
+#[must_use]
+fn docs_rs_features() -> Vec<String> {
+    let Ok(content) = std::fs::read_to_string(FEATURES_MANIFEST) else {
+        return Vec::new();
+    };
+    let Ok(toml_value) = content.parse::<toml::Value>() else {
+        return Vec::new();
+    };
+    toml_value
+        .get("package")
+        .and_then(|p| p.get("metadata"))
+        .and_then(|m| m.get("docs"))
+        .and_then(|d| d.get("rs"))
+        .and_then(|rs| rs.get("features"))
+        .and_then(|f| f.as_array())
+        .map(|features| {
+            features
+                .iter()
+                .filter_map(|v| v.as_str().map(str::to_string))
+                .collect()
+        })
+        .unwrap_or_default()
+}
diff --git a/dev/ci/src/res/manifests.rs b/dev/ci/src/res/manifests.rs
new file mode 100644
index 0000000..7c72146
--- /dev/null
+++ b/dev/ci/src/res/manifests.rs
@@ -0,0 +1,103 @@
+use std::collections::HashMap;
+use std::path::{Path, PathBuf};
+
+use mingling::{Program, macros::program_setup};
+
+use crate::ThisProgram;
+
+/// Directories whose manifests are excluded from CI checks.
+///
+/// Path is relative to the crate source file (`dev/ci/src/res/`).
+const IGNORED_DIRS_FILE: &str = include_str!("../../../configs/ci-ignored-dirs.txt");
+
+/// All `Cargo.toml` manifests the CI will check.
+#[derive(Default, Clone)]
+pub struct Manifests {
+    pub path: Vec<PathBuf>,
+    /// Package name -> its manifest path.
+    pub package_dirs: HashMap<String, PathBuf>,
+}
+
+#[program_setup]
+pub fn manifests_setup(p: &mut Program<ThisProgram>) {
+    let path = cargo_tomls();
+    let package_dirs = path.iter().map(|p| (package_name(p), p.clone())).collect();
+    p.with_resource(Manifests { path, package_dirs });
+}
+
+/// Recursively collects every `Cargo.toml` under the current directory,
+/// skipping the legacy `.run` CI directory and any directory listed in
+/// `dev/configs/ci-ignored-dirs.txt`.
+#[must_use]
+fn cargo_tomls() -> Vec<PathBuf> {
+    let ignored = ignored_dirs();
+    let mut cargo_tomls = Vec::new();
+    let mut dirs = vec![PathBuf::from(".")];
+    while let Some(dir) = dirs.pop() {
+        if is_ignored(&dir.to_string_lossy(), &ignored) {
+            continue;
+        }
+        if let Ok(entries) = std::fs::read_dir(&dir) {
+            for entry in entries.flatten() {
+                let path = entry.path();
+                if path.is_dir() {
+                    // Skip the legacy `.run` CI directory
+                    if path.file_name().and_then(|n| n.to_str()) == Some(".run") {
+                        continue;
+                    }
+                    dirs.push(path);
+                } else if path.file_name().and_then(|n| n.to_str()) == Some("Cargo.toml") {
+                    cargo_tomls.push(path);
+                }
+            }
+        }
+    }
+    cargo_tomls
+}
+
+/// Parses `dev/configs/ci-ignored-dirs.txt` into directory prefixes:
+/// non-empty lines that do not start with `#`, with the trailing `/` stripped
+/// (e.g. `./.temp/` → `./.temp`).
+fn ignored_dirs() -> Vec<String> {
+    IGNORED_DIRS_FILE
+        .lines()
+        .map(str::trim)
+        .filter(|line| !line.is_empty() && !line.starts_with('#'))
+        .map(|line| line.trim_end_matches('/').to_string())
+        .collect()
+}
+
+/// Whether `path` (a walk directory, e.g. `./.temp` or `./examples`) is inside
+/// one of the ignored directories.
+fn is_ignored(path: &str, ignored: &[String]) -> bool {
+    ignored.iter().any(|dir| {
+        path.strip_prefix(dir.as_str())
+            .is_some_and(|rest| rest.is_empty() || rest.starts_with('/'))
+    })
+}
+
+/// Extracts the package name from a `Cargo.toml`.
+///
+/// Falls back to the parent directory name (e.g. `mingling_core/Cargo.toml` →
+/// `mingling_core`, workspace root → `(root)`), matching the legacy CI.
+fn package_name(path: &Path) -> String {
+    let fallback = || {
+        path.parent()
+            .and_then(|p| p.file_name())
+            .and_then(|n| n.to_str())
+            .unwrap_or("(root)")
+            .to_string()
+    };
+
+    let Ok(content) = std::fs::read_to_string(path) else {
+        return fallback();
+    };
+    let Ok(toml_value) = content.parse::<toml::Table>() else {
+        return fallback();
+    };
+    toml_value
+        .get("package")
+        .and_then(|p| p.get("name"))
+        .and_then(|n| n.as_str())
+        .map_or_else(fallback, str::to_string)
+}
diff --git a/dev/ci/src/res/print.rs b/dev/ci/src/res/print.rs
new file mode 100644
index 0000000..9d844a6
--- /dev/null
+++ b/dev/ci/src/res/print.rs
@@ -0,0 +1,174 @@
+use colored::Colorize;
+use mingling::config::ErrorOutput;
+use mingling::hook::ProgramHook;
+use mingling::{Program, macros::program_setup};
+use mingling::{StringVec, this};
+
+use crate::ThisProgram;
+
+#[program_setup]
+pub fn print_setup(p: &mut Program<ThisProgram>) {
+    p.with_resource(CargoError::default());
+    p.with_resource(CargoWarn::default());
+    p.with_resource(CargoHelp::default());
+    p.with_resource(CargoStatus::default());
+
+    p.with_hook(ProgramHook::empty().on_begin::<_, ()>(move |_| {
+        let p = this::<ThisProgram>();
+        let silence_err = p.stdout_setting.error_output == ErrorOutput::Hide;
+
+        p.modify_res(|r: &mut CargoError| r.silence = silence_err);
+        p.modify_res(|r: &mut CargoWarn| r.silence = silence_err);
+        p.modify_res(|r: &mut CargoHelp| r.silence = silence_err);
+        p.modify_res(|r: &mut CargoStatus| r.silence = silence_err);
+    }));
+}
+
+#[derive(Default, Clone)]
+pub struct CargoError {
+    silence: bool,
+}
+
+impl MessagePrinter for CargoError {
+    fn format(&self, msg: impl Into<StringVec>) -> String {
+        format!("{}: {}", "error".bold().bright_red(), msg.into().join(""))
+    }
+
+    fn std_mode(&self) -> StandardOutMode {
+        if self.silence {
+            StandardOutMode::Silence
+        } else {
+            StandardOutMode::Error
+        }
+    }
+}
+
+#[derive(Default, Clone)]
+pub struct CargoWarn {
+    silence: bool,
+}
+
+impl MessagePrinter for CargoWarn {
+    fn format(&self, msg: impl Into<StringVec>) -> String {
+        format!("{}: {}", "warning".bright_yellow(), msg.into().join(""))
+    }
+
+    fn std_mode(&self) -> StandardOutMode {
+        if self.silence {
+            StandardOutMode::Silence
+        } else {
+            StandardOutMode::Error
+        }
+    }
+}
+
+#[derive(Default, Clone)]
+pub struct CargoHelp {
+    silence: bool,
+}
+
+impl MessagePrinter for CargoHelp {
+    fn format(&self, msg: impl Into<StringVec>) -> String {
+        format!("{}: {}", "help".bright_white(), msg.into().join(""))
+    }
+
+    fn std_mode(&self) -> StandardOutMode {
+        if self.silence {
+            StandardOutMode::Silence
+        } else {
+            StandardOutMode::Error
+        }
+    }
+}
+
+#[derive(Default, Clone)]
+pub struct CargoStatus {
+    silence: bool,
+}
+
+impl MessagePrinter for CargoStatus {
+    fn format(&self, msg: impl Into<StringVec>) -> String {
+        let parts: Vec<String> = msg.into().to_vec();
+        let first = if parts.is_empty() {
+            String::new()
+        } else {
+            parts[0].trim().to_string()
+        };
+
+        let (prefix, content) = if first.is_empty() {
+            // Empty: fall back to Info with full message
+            ("Info".to_string(), parts.join(" "))
+        } else if first.chars().count() == 1 {
+            // Single character: prefix is Info, entire message is content
+            ("Info".to_string(), parts.join(" "))
+        } else if first.chars().count() <= 12 {
+            // Single part that is a status prefix (no message after it)
+            if parts.len() == 1 {
+                ("Info".to_string(), first)
+            } else {
+                // First part is a status prefix, remaining parts are the message
+                let content = parts[1..].join(" ").trim_start().to_string();
+                (first, content)
+            }
+        } else {
+            // First part too long: all is message, fall back to Info
+            ("Info".to_string(), parts.join(" "))
+        };
+
+        let padding = " ".repeat(12usize.saturating_sub(prefix.chars().count()));
+
+        format!(
+            "{}{} {}",
+            padding,
+            prefix.bold().bright_green(),
+            content.trim()
+        )
+    }
+
+    fn std_mode(&self) -> StandardOutMode {
+        if self.silence {
+            StandardOutMode::Silence
+        } else {
+            StandardOutMode::Out
+        }
+    }
+}
+
+pub trait MessagePrinter {
+    #[doc(hidden)]
+    fn println(&self, msg: impl Into<StringVec>) {
+        match self.std_mode() {
+            StandardOutMode::Out => println!("{}", self.format(msg)),
+            StandardOutMode::Error => eprintln!("{}", self.format(msg)),
+            StandardOutMode::Silence => {}
+        }
+    }
+
+    #[doc(hidden)]
+    fn print(&self, msg: impl Into<StringVec>) {
+        match self.std_mode() {
+            StandardOutMode::Out => print!("{}", self.format(msg)),
+            StandardOutMode::Error => eprint!("{}", self.format(msg)),
+            StandardOutMode::Silence => {}
+        }
+    }
+
+    /// Formats the message string before output.
+    fn format(&self, msg: impl Into<StringVec>) -> String;
+
+    /// Returns the standard output mode (stdout or stderr).
+    fn std_mode(&self) -> StandardOutMode;
+}
+
+/// Specifies where standard output messages should be directed.
+///
+/// This enum determines whether messages are printed to stdout, stderr, or suppressed entirely.
+#[repr(u8)]
+pub enum StandardOutMode {
+    /// Print messages to standard output (stdout).
+    Out,
+    /// Print messages to standard error (stderr).
+    Error,
+    /// Suppress all output.
+    Silence,
+}
diff --git a/dev/ci/src/task.rs b/dev/ci/src/task.rs
new file mode 100644
index 0000000..a42e458
--- /dev/null
+++ b/dev/ci/src/task.rs
@@ -0,0 +1,9 @@
+pub(crate) mod cmd_build_check;
+pub(crate) mod cmd_clippy_check;
+pub(crate) mod cmd_docs_check;
+pub(crate) mod cmd_example_check;
+pub(crate) mod cmd_markdown_check;
+pub(crate) mod cmd_markdown_compare;
+pub(crate) mod cmd_test;
+pub(crate) mod run;
+
diff --git a/dev/ci/src/task/cmd_build_check.rs b/dev/ci/src/task/cmd_build_check.rs
new file mode 100644
index 0000000..f67fe2e
--- /dev/null
+++ b/dev/ci/src/task/cmd_build_check.rs
@@ -0,0 +1,47 @@
+use std::ffi::OsString;
+use std::path::Path;
+
+use mingling::{
+    Grouped, Routable,
+    macros::{buffer, command, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::res::Manifests;
+use crate::task::run::{location, run_parallel_checks};
+
+#[command(node = "build-check")]
+pub async fn build_check(manifests: &Manifests) -> Next {
+    let tasks = manifests
+        .package_dirs
+        .iter()
+        .map(|(name, path)| (name.clone(), location(path), build_args(path)))
+        .collect();
+    let fail_count = run_parallel_checks("Build-Check", "Building", tasks).await;
+    ResultBuildCheck { fail_count }.to_chain()
+}
+
+/// `cargo build --manifest-path <path>`
+fn build_args(path: &Path) -> Vec<OsString> {
+    vec![
+        "cargo".into(),
+        "build".into(),
+        "--manifest-path".into(),
+        path.as_os_str().to_os_string(),
+    ]
+}
+
+/// Number of packages that failed to build.
+#[derive(Grouped)]
+pub struct ResultBuildCheck {
+    pub fail_count: usize,
+}
+
+/// Silently sets a non-zero exit code when any build failed.
+#[renderer(buffer)]
+pub fn render_build_check(r: ResultBuildCheck, exit_code: &mut ResExitCode) {
+    if r.fail_count > 0 {
+        exit_code.exit_code = 1;
+    }
+}
diff --git a/dev/ci/src/task/cmd_clippy_check.rs b/dev/ci/src/task/cmd_clippy_check.rs
new file mode 100644
index 0000000..a0dd46e
--- /dev/null
+++ b/dev/ci/src/task/cmd_clippy_check.rs
@@ -0,0 +1,50 @@
+use std::ffi::OsString;
+use std::path::Path;
+
+use mingling::{
+    Grouped, Routable,
+    macros::{buffer, command, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::res::Manifests;
+use crate::task::run::{location, run_parallel_checks};
+
+#[command(node = "clippy-check")]
+pub async fn clippy_check(manifests: &Manifests) -> Next {
+    let tasks = manifests
+        .package_dirs
+        .iter()
+        .map(|(name, path)| (name.clone(), location(path), clippy_args(path)))
+        .collect();
+    let fail_count = run_parallel_checks("Clippy-Check", "Clippy", tasks).await;
+    ResultClippyCheck { fail_count }.to_chain()
+}
+
+/// `cargo clippy --manifest-path <path> -- -D warnings`
+fn clippy_args(path: &Path) -> Vec<OsString> {
+    vec![
+        "cargo".into(),
+        "clippy".into(),
+        "--manifest-path".into(),
+        path.as_os_str().to_os_string(),
+        "--".into(),
+        "-D".into(),
+        "warnings".into(),
+    ]
+}
+
+/// Number of packages that failed clippy.
+#[derive(Grouped)]
+pub struct ResultClippyCheck {
+    pub fail_count: usize,
+}
+
+/// Silently sets a non-zero exit code when any clippy check failed.
+#[renderer(buffer)]
+pub fn render_clippy_check(r: ResultClippyCheck, exit_code: &mut ResExitCode) {
+    if r.fail_count > 0 {
+        exit_code.exit_code = 1;
+    }
+}
diff --git a/dev/ci/src/task/cmd_docs_check.rs b/dev/ci/src/task/cmd_docs_check.rs
new file mode 100644
index 0000000..3a77d4d
--- /dev/null
+++ b/dev/ci/src/task/cmd_docs_check.rs
@@ -0,0 +1,44 @@
+use std::ffi::OsString;
+
+use mingling::{
+    Grouped, Routable,
+    macros::{buffer, command, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::res::ResFeatureList;
+use crate::task::run::run_parallel_checks;
+
+#[command(node = "docs-check")]
+pub async fn docs_check(features: &ResFeatureList) -> Next {
+    let args = vec![
+        OsString::from("cargo"),
+        OsString::from("rustdoc"),
+        OsString::from("--features"),
+        OsString::from(features.list.join(",")),
+        OsString::from("-p"),
+        OsString::from("mingling"),
+        OsString::from("--"),
+        OsString::from("-D"),
+        OsString::from("warnings"),
+    ];
+    let tasks = vec![("mingling".to_string(), "./mingling".to_string(), args)];
+    let fail_count = run_parallel_checks("Docs-Check", "Docs", tasks).await;
+
+    ResultDocsCheck { fail_count }.to_chain()
+}
+
+/// Number of failed doc builds (0 or 1).
+#[derive(Grouped)]
+pub struct ResultDocsCheck {
+    pub fail_count: usize,
+}
+
+/// Silently sets a non-zero exit code when the doc build failed.
+#[renderer(buffer)]
+pub fn render_docs_check(r: ResultDocsCheck, exit_code: &mut ResExitCode) {
+    if r.fail_count > 0 {
+        exit_code.exit_code = 1;
+    }
+}
diff --git a/dev/ci/src/task/cmd_example_check.rs b/dev/ci/src/task/cmd_example_check.rs
new file mode 100644
index 0000000..1b9f440
--- /dev/null
+++ b/dev/ci/src/task/cmd_example_check.rs
@@ -0,0 +1,69 @@
+use colored::Colorize;
+use mingling::{
+    Grouped, Routable,
+    macros::{buffer, command, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::examples::{check_example, load_test_configs};
+use crate::progress::task_progress_bar;
+use crate::reporter::{self, ReportResult};
+
+#[command(node = "example-check")]
+pub async fn example_check() -> Next {
+    reporter::set_task("Example-Check");
+
+    let configs = load_test_configs();
+    let total = configs.len();
+    let pb = task_progress_bar(total, "Testing");
+    pb.set_message("examples");
+
+    // One blocking task per example: build + run its test cases.
+    let mut handles = Vec::new();
+    for example in configs {
+        handles.push(tokio::task::spawn_blocking(move || check_example(example)));
+    }
+
+    let mut fail_count = 0;
+    for handle in handles {
+        let Ok(outcome) = handle.await else {
+            continue;
+        };
+        pb.set_message(outcome.name.clone());
+        pb.inc(1);
+
+        if outcome.ok {
+            reporter::export(&outcome.name, &outcome.location, ReportResult::Ok);
+        } else {
+            fail_count += 1;
+            // Plain stderr: `pb.println` is swallowed on non-TTY (CI).
+            eprintln!("  {} {}", "failed".bright_red(), outcome.name);
+            eprintln!("  {}", outcome.output);
+            reporter::export(
+                &outcome.name,
+                &outcome.location,
+                ReportResult::Error(outcome.output),
+            );
+        }
+    }
+
+    pb.finish_and_clear();
+    reporter::flush();
+
+    ResultExampleCheck { fail_count }.to_chain()
+}
+
+/// Number of examples that failed to build or pass their tests.
+#[derive(Grouped)]
+pub struct ResultExampleCheck {
+    pub fail_count: usize,
+}
+
+/// Silently sets a non-zero exit code when any example failed.
+#[renderer(buffer)]
+pub fn render_example_check(r: ResultExampleCheck, exit_code: &mut ResExitCode) {
+    if r.fail_count > 0 {
+        exit_code.exit_code = 1;
+    }
+}
diff --git a/dev/ci/src/task/cmd_markdown_check.rs b/dev/ci/src/task/cmd_markdown_check.rs
new file mode 100644
index 0000000..eb50fe5
--- /dev/null
+++ b/dev/ci/src/task/cmd_markdown_check.rs
@@ -0,0 +1,192 @@
+use std::collections::HashMap;
+use std::path::{Path, PathBuf};
+
+use just_fmt::snake_case;
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{buffer, command, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::markdown::project::parse_markdown;
+use crate::markdown::test::{MarkdownBlockOutcome, try_test_markdown_project};
+use crate::reporter::{self, ReportResult};
+use crate::res::{CargoError, MessagePrinter};
+
+const VERIFIED_DOCS: &str = "dev/configs/verified-docs.toml";
+
+#[command(node = "markdown-check")]
+pub async fn markdown_check(args: Vec<String>) -> Next {
+    let Some(path_str) = args.first() else {
+        return ErrorMarkdownArgs("missing <path> argument".to_string()).to_chain();
+    };
+    let path =
+        std::env::current_dir().map_or_else(|_| PathBuf::from(path_str), |cwd| cwd.join(path_str));
+    if !path.is_file() {
+        return ErrorMarkdownArgs(format!("{} is not a file", path.display())).to_chain();
+    }
+    let Ok(content) = std::fs::read_to_string(&path) else {
+        return ErrorMarkdownArgs(format!("failed to read {}", path.display())).to_chain();
+    };
+
+    let location = path.to_string_lossy().into_owned();
+    let item = format!("doc-{}", snake_case!(&stem_of(&path)));
+    reporter::set_task("Markdown-Check");
+
+    let projects = parse_markdown(&content, &location);
+    let outcomes = try_test_markdown_project(projects).await;
+    let file_info = HashMap::from([(location.clone(), (item, location))]);
+    let fail_count = report_files(&outcomes, &file_info);
+    reporter::flush();
+
+    ResultMarkdownCheck { fail_count }.to_chain()
+}
+
+#[command(node = "markdown-check-all")]
+pub async fn markdown_check_all() -> Next {
+    let Some(files) = verified_md_files() else {
+        return ErrorMarkdownConfig.to_chain();
+    };
+    reporter::set_task("Markdown-Check-All");
+
+    // Collect all projects; remember each file's report identity
+    // (`{key}-{snake_case(file_stem)}` -> location).
+    let mut projects = Vec::new();
+    let mut file_info: HashMap<String, (String, String)> = HashMap::new();
+    for (label, path) in files {
+        let Ok(content) = std::fs::read_to_string(&path) else {
+            continue;
+        };
+        let file_name = path.file_name().unwrap().to_string_lossy();
+        let source_file = format!("{label}/{file_name}");
+        let item = format!("{label}-{}", snake_case!(&stem_of(&path)));
+        let location = path.to_string_lossy().into_owned();
+        file_info.insert(source_file.clone(), (item, location));
+        projects.extend(parse_markdown(&content, &source_file));
+    }
+
+    let outcomes = try_test_markdown_project(projects).await;
+    let fail_count = report_files(&outcomes, &file_info);
+    reporter::flush();
+
+    ResultMarkdownCheck { fail_count }.to_chain()
+}
+
+/// The file name without extension, e.g. `README.md` → `README`.
+pub(crate) fn stem_of(path: &Path) -> String {
+    path.file_stem()
+        .unwrap_or_default()
+        .to_string_lossy()
+        .into_owned()
+}
+
+/// Exports one report entry per source file: `ok` when every block passed,
+/// otherwise an error carrying the failed blocks' details.
+fn report_files(
+    outcomes: &[MarkdownBlockOutcome],
+    file_info: &HashMap<String, (String, String)>,
+) -> usize {
+    let mut by_file: HashMap<&str, (bool, Vec<String>)> = HashMap::new();
+    for outcome in outcomes {
+        let (ok, outputs) = by_file
+            .entry(outcome.source_file.as_str())
+            .or_insert((true, Vec::new()));
+        if !outcome.ok {
+            *ok = false;
+            outputs.push(format!(
+                "{}:{}:\n{}",
+                outcome.source_file, outcome.line, outcome.output
+            ));
+        }
+    }
+
+    let mut fail_count = 0;
+    for (source_file, (ok, outputs)) in by_file {
+        let Some((item, location)) = file_info.get(source_file) else {
+            continue;
+        };
+        if ok {
+            reporter::export(item, location, ReportResult::Ok);
+        } else {
+            fail_count += outputs.len();
+            reporter::export(item, location, ReportResult::Error(outputs.join("\n\n")));
+        }
+    }
+    fail_count
+}
+
+/// Reads `verified-docs.toml` and collects all `.md` files: single files,
+/// directories, or `**` globs (walked from the base directory).
+fn verified_md_files() -> Option<Vec<(String, PathBuf)>> {
+    let content = std::fs::read_to_string(VERIFIED_DOCS).ok()?;
+    let table: toml::Table = content.parse().ok()?;
+
+    let mut files: Vec<(String, PathBuf)> = Vec::new();
+    for (label, value) in table.get("verified")?.as_table()? {
+        let value_str = value.as_str()?;
+        let candidate = PathBuf::from(value_str);
+        if candidate.is_dir() {
+            collect_md_files(&candidate, &mut files, label);
+        } else if candidate.is_file() {
+            files.push((label.clone(), candidate));
+        } else if candidate.extension().is_none() {
+            // Glob like "docs/pages/**": walk the base directory.
+            let base = PathBuf::from(value_str.trim_end_matches("/**").trim_end_matches('*'));
+            if base.is_dir() {
+                collect_md_files(&base, &mut files, label);
+            }
+        }
+    }
+
+    files.sort_by(|a, b| a.0.cmp(&b.0).then(a.1.cmp(&b.1)));
+    Some(files)
+}
+
+/// Recursively collects all `.md` files under a directory.
+fn collect_md_files(dir: &Path, files: &mut Vec<(String, PathBuf)>, label: &str) {
+    if let Ok(entries) = std::fs::read_dir(dir) {
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if path.is_dir() {
+                collect_md_files(&path, files, label);
+            } else if path.extension().is_some_and(|ext| ext == "md") {
+                files.push((label.to_string(), path));
+            }
+        }
+    }
+}
+
+/// Number of code blocks that failed to build.
+#[derive(Grouped)]
+pub struct ResultMarkdownCheck {
+    pub fail_count: usize,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorMarkdownArgs(pub String);
+
+#[derive(Grouped, Default)]
+pub struct ErrorMarkdownConfig;
+
+/// Silently sets a non-zero exit code when any block failed.
+#[renderer(buffer)]
+pub fn render_markdown_check(r: ResultMarkdownCheck, exit_code: &mut ResExitCode) {
+    if r.fail_count > 0 {
+        exit_code.exit_code = 1;
+    }
+}
+
+#[renderer]
+pub fn render_error_markdown_args(e: ErrorMarkdownArgs, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![e.0]);
+    render_result
+}
+
+#[renderer]
+pub fn render_error_markdown_config(_: ErrorMarkdownConfig, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![format!("failed to read {VERIFIED_DOCS}")]);
+    render_result
+}
diff --git a/dev/ci/src/task/cmd_markdown_compare.rs b/dev/ci/src/task/cmd_markdown_compare.rs
new file mode 100644
index 0000000..f3a6a1f
--- /dev/null
+++ b/dev/ci/src/task/cmd_markdown_compare.rs
@@ -0,0 +1,221 @@
+use std::collections::BTreeSet;
+use std::path::{Path, PathBuf};
+
+use colored::Colorize;
+use just_fmt::snake_case;
+use mingling::{
+    Grouped, Routable,
+    macros::{buffer, command, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::markdown::compare::{collect_md_files, compare_signature};
+use crate::reporter::{self, ReportResult};
+use crate::task::cmd_markdown_check::{ErrorMarkdownArgs, ErrorMarkdownConfig, stem_of};
+
+const DOCS_DIR: &str = "./docs";
+const LANG_CONFIG: &str = "dev/configs/docs-lang.txt";
+
+/// One file-pair outcome of a structure comparison.
+struct CompareOutcome {
+    item: String,
+    location: String,
+    ok: bool,
+    output: String,
+}
+
+#[command(node = "markdown-compare")]
+// `#[command]` rewrites an owned first param into the entry type, so the args
+// must be passed by value even though the body only reads them.
+#[allow(clippy::needless_pass_by_value)]
+pub fn markdown_compare(args: Vec<String>) -> Next {
+    let [ref_arg, trans_arg] = args.as_slice() else {
+        return ErrorMarkdownArgs("missing <reference> and <translation> arguments".to_string())
+            .to_chain();
+    };
+    let ref_path = cwd().join(ref_arg);
+    let trans_path = cwd().join(trans_arg);
+
+    reporter::set_task("Markdown-Compare");
+    let outcomes = if ref_path.is_dir() && trans_path.is_dir() {
+        compare_dirs(&ref_path, &trans_path, "doc")
+    } else if ref_path.is_file() && trans_path.is_file() {
+        compare_files(&ref_path, &trans_path, "doc")
+    } else {
+        return ErrorMarkdownArgs(
+            "both arguments must be files or both must be directories".to_string(),
+        )
+        .to_chain();
+    };
+    let fail_count = export_outcomes(&outcomes);
+    reporter::flush();
+
+    ResultMarkdownCompare { fail_count }.to_chain()
+}
+
+#[command(node = "markdown-compare-all")]
+pub fn markdown_compare_all() -> Next {
+    let Some(langs) = lang_config() else {
+        return ErrorMarkdownConfig.to_chain();
+    };
+    let Some(reference) = langs.first() else {
+        return ErrorMarkdownConfig.to_chain();
+    };
+    let ref_dir = PathBuf::from(DOCS_DIR).join(reference);
+    if !ref_dir.is_dir() {
+        return ErrorMarkdownArgs(format!(
+            "reference docs directory `{}` does not exist",
+            ref_dir.display()
+        ))
+        .to_chain();
+    }
+
+    reporter::set_task("Markdown-Compare-All");
+    let mut fail_count = 0;
+    for lang in &langs[1..] {
+        let lang_dir = PathBuf::from(DOCS_DIR).join(lang);
+        if !lang_dir.is_dir() {
+            eprintln!(
+                "  {}: `{}` does not exist",
+                "ERROR".bright_red(),
+                lang_dir.display()
+            );
+            fail_count += 1;
+            continue;
+        }
+        let outcomes = compare_dirs(&ref_dir, &lang_dir, &lang_key(lang));
+        fail_count += export_outcomes(&outcomes);
+    }
+    reporter::flush();
+
+    ResultMarkdownCompare { fail_count }.to_chain()
+}
+
+/// Compares one file pair (reference vs translation).
+fn compare_files(ref_path: &Path, trans_path: &Path, prefix: &str) -> Vec<CompareOutcome> {
+    let item = format!("{prefix}-{}", snake_case!(&stem_of(ref_path)));
+    let location = trans_path.to_string_lossy().into_owned();
+    match compare_signature(ref_path, trans_path) {
+        Ok(()) => vec![CompareOutcome {
+            item,
+            location,
+            ok: true,
+            output: String::new(),
+        }],
+        Err(diffs) => vec![CompareOutcome {
+            item,
+            location,
+            ok: false,
+            output: diffs.join("\n"),
+        }],
+    }
+}
+
+/// Compares two directories: every `.md` file in the reference must exist in
+/// the translation with the same structural signature; extra files are errors.
+fn compare_dirs(ref_dir: &Path, trans_dir: &Path, prefix: &str) -> Vec<CompareOutcome> {
+    let ref_files = collect_md_files(ref_dir);
+    let ref_set: BTreeSet<PathBuf> = ref_files.iter().cloned().collect();
+    let trans_set: BTreeSet<PathBuf> = collect_md_files(trans_dir).into_iter().collect();
+
+    let mut outcomes = Vec::new();
+    for file in ref_files {
+        let item = format!("{prefix}-{}", snake_case!(&stem_of(&file)));
+        let trans_path = trans_dir.join(&file);
+        let location = trans_path.to_string_lossy().into_owned();
+        if !trans_set.contains(&file) {
+            outcomes.push(CompareOutcome {
+                item,
+                location,
+                ok: false,
+                output: "missing in translation".to_string(),
+            });
+            continue;
+        }
+        outcomes.push(match compare_signature(&ref_dir.join(&file), &trans_path) {
+            Ok(()) => CompareOutcome {
+                item,
+                location,
+                ok: true,
+                output: String::new(),
+            },
+            Err(diffs) => CompareOutcome {
+                item,
+                location,
+                ok: false,
+                output: diffs.join("\n"),
+            },
+        });
+    }
+
+    for file in trans_set.difference(&ref_set) {
+        let item = format!("{prefix}-{}", snake_case!(&stem_of(file)));
+        let trans_path = trans_dir.join(file);
+        outcomes.push(CompareOutcome {
+            item,
+            location: trans_path.to_string_lossy().into_owned(),
+            ok: false,
+            output: "extra file, not in reference".to_string(),
+        });
+    }
+    outcomes
+}
+
+/// Exports the outcomes via `reporter`; failures also print to stderr.
+fn export_outcomes(outcomes: &[CompareOutcome]) -> usize {
+    let mut fail_count = 0;
+    for outcome in outcomes {
+        if outcome.ok {
+            reporter::export(&outcome.item, &outcome.location, ReportResult::Ok);
+        } else {
+            fail_count += 1;
+            eprintln!("  {} {}", "failed".bright_red(), outcome.item);
+            eprintln!("  {}\n{}", outcome.location, outcome.output);
+            reporter::export(
+                &outcome.item,
+                &outcome.location,
+                ReportResult::Error(outcome.output.clone()),
+            );
+        }
+    }
+    fail_count
+}
+
+/// Reads `dev/configs/docs-lang.txt`: the first line is the reference directory
+/// (relative to `./docs/`), the rest are translations that must mirror it.
+fn lang_config() -> Option<Vec<String>> {
+    let content = std::fs::read_to_string(LANG_CONFIG).ok()?;
+    Some(
+        content
+            .lines()
+            .map(str::trim)
+            .filter(|l| !l.is_empty() && !l.starts_with('#'))
+            .map(|l| l.trim_start_matches("./").to_string())
+            .collect(),
+    )
+}
+
+/// Turns a lang directory path into a report-item key, e.g.
+/// `./_zh_CN/pages/` → `_zh_CN_pages`.
+fn lang_key(lang: &str) -> String {
+    lang.trim_matches('/').replace('/', "_")
+}
+
+fn cwd() -> PathBuf {
+    std::env::current_dir().unwrap_or_else(|_| PathBuf::from("."))
+}
+
+/// Number of files that failed the structure comparison.
+#[derive(Grouped)]
+pub struct ResultMarkdownCompare {
+    pub fail_count: usize,
+}
+
+/// Silently sets a non-zero exit code when any comparison failed.
+#[renderer(buffer)]
+pub fn render_markdown_compare(r: ResultMarkdownCompare, exit_code: &mut ResExitCode) {
+    if r.fail_count > 0 {
+        exit_code.exit_code = 1;
+    }
+}
diff --git a/dev/ci/src/task/cmd_test.rs b/dev/ci/src/task/cmd_test.rs
new file mode 100644
index 0000000..5b9f55a
--- /dev/null
+++ b/dev/ci/src/task/cmd_test.rs
@@ -0,0 +1,54 @@
+use std::ffi::OsString;
+use std::path::Path;
+
+use mingling::{
+    Grouped, Routable,
+    macros::{buffer, command, renderer},
+    res::ResExitCode,
+};
+
+use crate::Next;
+use crate::res::{Manifests, ResCrateConfig};
+use crate::task::run::{location, run_parallel_checks};
+
+#[command(node = "test-all")]
+pub async fn test_all(manifests: &Manifests, config: &ResCrateConfig) -> Next {
+    let tasks = manifests
+        .package_dirs
+        .iter()
+        .map(|(name, path)| {
+            let args = config.test_command(name).map_or_else(
+                || test_args(path),
+                |cmd| cmd.iter().map(|s| OsString::from(s.as_str())).collect(),
+            );
+            (name.clone(), location(path), args)
+        })
+        .collect();
+    let fail_count = run_parallel_checks("Test-All", "Testing", tasks).await;
+    ResultTestAll { fail_count }.to_chain()
+}
+
+/// Default: `cargo test --manifest-path <path>` (crates without a
+/// `mingling-ci.toml` override).
+fn test_args(path: &Path) -> Vec<OsString> {
+    vec![
+        "cargo".into(),
+        "test".into(),
+        "--manifest-path".into(),
+        path.as_os_str().to_os_string(),
+    ]
+}
+
+/// Number of packages that failed tests.
+#[derive(Grouped)]
+pub struct ResultTestAll {
+    pub fail_count: usize,
+}
+
+/// Silently sets a non-zero exit code when any test failed.
+#[renderer(buffer)]
+pub fn render_test_all(r: ResultTestAll, exit_code: &mut ResExitCode) {
+    if r.fail_count > 0 {
+        exit_code.exit_code = 1;
+    }
+}
diff --git a/dev/ci/src/task/run.rs b/dev/ci/src/task/run.rs
new file mode 100644
index 0000000..ba752dd
--- /dev/null
+++ b/dev/ci/src/task/run.rs
@@ -0,0 +1,114 @@
+use std::ffi::OsString;
+use std::path::Path;
+
+use colored::Colorize;
+
+use crate::progress::task_progress_bar;
+use crate::reporter::{self, ReportResult};
+
+/// The manifest's parent directory, e.g. `./mingling` — the report location
+/// for a crate-based item.
+pub(crate) fn location(path: &Path) -> String {
+    path.parent()
+        .map_or_else(|| ".".to_string(), |d| d.to_string_lossy().into_owned())
+}
+
+/// Outcome of a `cargo` subcommand.
+struct CargoResult {
+    ok: bool,
+    exit_code: Option<i32>,
+    output: String,
+}
+
+/// Runs the given cargo task list in parallel.
+///
+/// Each task is an `(item, location, argv)` triple; progress and failures go
+/// to stderr: a failing task prints its output immediately and writes its
+/// report entry at the same time. Returns the number of failing tasks.
+pub(crate) async fn run_parallel_checks(
+    task: &str,
+    phase: &str,
+    tasks: Vec<(String, String, Vec<OsString>)>,
+) -> usize {
+    reporter::set_task(task);
+
+    let n = tasks.len();
+    let pb = task_progress_bar(n, phase);
+    pb.set_message("tasks");
+
+    // Run each task in parallel.
+    let mut set = tokio::task::JoinSet::new();
+    for (item, location, args) in tasks {
+        set.spawn(async move { (item, location, run_cargo(args).await) });
+    }
+
+    let mut fail_count = 0;
+    while let Some(joined) = set.join_next().await {
+        let Ok((item, location, result)) = joined else {
+            continue;
+        };
+        pb.inc(1);
+        pb.set_message(item.clone());
+
+        if result.ok {
+            reporter::export(&item, &location, ReportResult::Ok);
+        } else {
+            fail_count += 1;
+            // Failures print to stderr immediately (bar suspended to avoid
+            // interleaving) and write their report entry at the same time.
+            pb.suspend(|| {
+                eprintln!(
+                    "{}: {} failed{}",
+                    phase.bold().bright_cyan(),
+                    item,
+                    result
+                        .exit_code
+                        .map_or_else(String::new, |c| format!(" (exit code {c})"))
+                );
+                for line in result.output.lines() {
+                    eprintln!("  {line}");
+                }
+            });
+            reporter::export(&item, &location, ReportResult::Error(result.output));
+        }
+    }
+
+    pb.finish_and_clear();
+    reporter::flush();
+    fail_count
+}
+
+/// Runs a `cargo` subcommand, capturing its output.
+/// Runs a cargo subcommand (`argv[0]` is the program), capturing its output.
+async fn run_cargo(argv: Vec<OsString>) -> CargoResult {
+    let mut argv = argv.into_iter();
+    let Some(program) = argv.next() else {
+        return CargoResult {
+            ok: false,
+            exit_code: None,
+            output: "empty command".to_string(),
+        };
+    };
+
+    let output = tokio::process::Command::new(program)
+        .args(argv)
+        .output()
+        .await;
+
+    match output {
+        Ok(output) => {
+            let mut log = String::from_utf8_lossy(&output.stdout).into_owned();
+            log.push_str(&String::from_utf8_lossy(&output.stderr));
+            CargoResult {
+                ok: output.status.success(),
+                exit_code: output.status.code(),
+                output: log,
+            }
+        }
+        Err(e) => CargoResult {
+            ok: false,
+            exit_code: None,
+            output: format!("failed to run cargo: {e}"),
+        },
+    }
+}
diff --git a/dev/ci/src/tools.rs b/dev/ci/src/tools.rs
new file mode 100644
index 0000000..13c2ec4
--- /dev/null
+++ b/dev/ci/src/tools.rs
@@ -0,0 +1,3 @@
+pub(crate) mod docsify_refresh;
+pub(crate) mod example_refresh;
+pub(crate) mod features_refresh;
diff --git a/dev/ci/src/tools/docsify_refresh.rs b/dev/ci/src/tools/docsify_refresh.rs
new file mode 100644
index 0000000..dfb9b11
--- /dev/null
+++ b/dev/ci/src/tools/docsify_refresh.rs
@@ -0,0 +1,373 @@
+//! Docsify maintenance: fix code-box blank lines and regenerate `_sidebar.md`
+//! files under `docs/`.
+
+use std::collections::BTreeMap;
+use std::fmt::Write as _;
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{buffer, command, r_println, renderer},
+};
+
+use crate::Next;
+use crate::res::{CargoError, MessagePrinter};
+
+const DOCS_DIR: &str = "./docs";
+const SIDEBAR_HEAD: &str = "- [Welcome!](README)\n";
+
+#[command(node = "docsify-refresh")]
+pub fn docsify_refresh() -> Next {
+    match refresh_all() {
+        Ok(written) => ResultDocsifyRefresh { written }.to_chain(),
+        Err(e) => ErrorDocsifyRefresh(e).to_chain(),
+    }
+}
+
+fn refresh_all() -> Result<Vec<String>, String> {
+    let mut written = Vec::new();
+    written.extend(fix_code_boxes());
+    written.extend(gen_sidebars()?);
+    Ok(written)
+}
+
+/// Part 1: docsify renders code blocks poorly when the blank lines around
+/// them are completely empty — replace them with a single space.
+fn fix_code_boxes() -> Vec<String> {
+    let mut file_count = 0;
+    let mut fixed_count = 0;
+    let mut written = Vec::new();
+
+    collect_md_files(Path::new(DOCS_DIR), &mut |path| {
+        if path
+            .file_name()
+            .is_some_and(|n| n.to_string_lossy().to_lowercase() == "_sidebar.md")
+        {
+            return;
+        }
+        let content = fs::read_to_string(path).unwrap_or_default();
+        if content.is_empty() {
+            return;
+        }
+        let new_content = fix_code_box_empty_lines(&content);
+        if new_content != content {
+            fs::write(path, &new_content).unwrap();
+            written.push(format!("fixed: {}", path.display()));
+            fixed_count += 1;
+        }
+        file_count += 1;
+    });
+
+    written.push(format!("scanned {file_count} files, fixed {fixed_count}"));
+    written
+}
+
+/// Replaces completely empty lines adjacent to fenced code blocks with lines
+/// containing a single space.
+fn fix_code_box_empty_lines(content: &str) -> String {
+    let mut result = String::new();
+    let lines: Vec<&str> = content.lines().collect();
+    let len = lines.len();
+
+    let mut i = 0;
+    while i < len {
+        let line = lines[i];
+        result.push_str(line);
+        result.push('\n');
+        i += 1;
+
+        if !line.trim_start().starts_with("```") {
+            continue;
+        }
+
+        // In a code block: find the closing fence.
+        let code_start = i;
+        let mut code_end = len;
+        let mut found_end = false;
+        while i < len {
+            let cline = lines[i];
+            if cline.trim_start().starts_with("```") && !cline.trim().is_empty() {
+                code_end = i;
+                found_end = true;
+                break;
+            }
+            i += 1;
+        }
+
+        ensure_space_before_code_block(&mut result);
+
+        for code_line in lines.iter().take(code_end).skip(code_start) {
+            if code_line.is_empty() {
+                result.push(' ');
+            } else {
+                result.push_str(code_line);
+            }
+            result.push('\n');
+        }
+
+        if found_end {
+            result.push_str(lines[code_end]);
+            result.push('\n');
+            i += 1;
+
+            if i < len && lines[i].trim().is_empty() && lines[i].is_empty() {
+                result.push(' ');
+                result.push('\n');
+                i += 1;
+            }
+        }
+    }
+
+    while result.ends_with('\n') {
+        result.pop();
+    }
+    result.push('\n');
+    result
+}
+
+/// Turns a trailing `\n\n` before a code block into `\n \n`.
+fn ensure_space_before_code_block(result: &mut String) {
+    let len = result.len();
+    if len >= 2 && &result[len - 2..] == "\n\n" {
+        result.insert(len - 1, ' ');
+    }
+}
+
+/// Part 2: find every README.md under `docs/` (each is a site root) and
+/// regenerate its `_sidebar.md`.
+fn gen_sidebars() -> Result<Vec<String>, String> {
+    let mut written = Vec::new();
+    for readme_path in find_all_readmes(Path::new(DOCS_DIR)) {
+        let site_root = readme_path
+            .parent()
+            .ok_or_else(|| format!("{} has no parent", readme_path.display()))?;
+        if let Some(content_dir) = find_content_dir(site_root) {
+            let lines = build_sidebar_content(site_root, &content_dir, SIDEBAR_HEAD);
+            let sidebar_path = site_root.join("_sidebar.md");
+            fs::write(&sidebar_path, lines)
+                .map_err(|e| format!("failed to write {}: {e}", sidebar_path.display()))?;
+            written.push(format!("generated: {}", sidebar_path.display()));
+        }
+    }
+    Ok(written)
+}
+
+/// Recursively finds all README.md files under a directory.
+fn find_all_readmes(dir: &Path) -> Vec<PathBuf> {
+    let mut results = Vec::new();
+    if let Ok(read_dir) = fs::read_dir(dir) {
+        let mut entries: Vec<_> = read_dir.flatten().collect();
+        entries.sort_by_key(std::fs::DirEntry::path);
+        for entry in entries {
+            let path = entry.path();
+            if path.is_dir() {
+                results.extend(find_all_readmes(&path));
+            } else if path.file_name().is_some_and(|n| n == "README.md") {
+                results.push(path);
+            }
+        }
+    }
+    results
+}
+
+/// The content directory of a site: `pages/` if present, else the first
+/// subdirectory containing markdown files.
+fn find_content_dir(site_root: &Path) -> Option<PathBuf> {
+    let pages_dir = site_root.join("pages");
+    if pages_dir.is_dir() {
+        return Some(pages_dir);
+    }
+    if let Ok(read_dir) = fs::read_dir(site_root) {
+        let mut entries: Vec<_> = read_dir.flatten().collect();
+        entries.sort_by_key(std::fs::DirEntry::path);
+        for entry in entries {
+            let path = entry.path();
+            if path.is_dir() && has_markdown_files(&path) {
+                return Some(path);
+            }
+        }
+    }
+    None
+}
+
+fn has_markdown_files(dir: &Path) -> bool {
+    if let Ok(read_dir) = fs::read_dir(dir) {
+        for entry in read_dir.flatten() {
+            let path = entry.path();
+            if path.is_dir() {
+                if has_markdown_files(&path) {
+                    return true;
+                }
+            } else if path.extension().is_some_and(|ext| ext == "md") {
+                return true;
+            }
+        }
+    }
+    false
+}
+
+#[derive(Clone)]
+struct SidebarEntry {
+    title: String,
+    link: String,
+}
+
+/// Builds the sidebar content from the markdown files under `pages_dir`.
+fn build_sidebar_content(base_dir: &Path, pages_dir: &Path, sidebar_head: &str) -> String {
+    let mut lines = String::from(sidebar_head);
+
+    let mut root_files: Vec<SidebarEntry> = Vec::new();
+    let mut sub_dirs: BTreeMap<String, Vec<SidebarEntry>> = BTreeMap::new();
+
+    if let Ok(read_dir) = fs::read_dir(pages_dir) {
+        for entry in read_dir.flatten() {
+            let path = entry.path();
+            if path.is_dir() {
+                let dir_name = entry.file_name().to_string_lossy().into_owned();
+                let entries = collect_markdown_files(&path, base_dir);
+                if !entries.is_empty() {
+                    let display_name = get_directory_display_name(&path, &dir_name);
+                    sub_dirs.insert(display_name, entries);
+                }
+            } else if path.extension().is_some_and(|ext| ext == "md") {
+                root_files.push(SidebarEntry {
+                    title: extract_title(&path),
+                    link: relative_link(&path, base_dir),
+                });
+            }
+        }
+    }
+
+    root_files.sort_by(|a, b| natural_cmp(&a.link, &b.link));
+    for f in &root_files {
+        let _ = writeln!(lines, "* [{}]({})", f.title, f.link);
+    }
+
+    for (dir_name, entries) in &sub_dirs {
+        let mut sorted_entries = entries.clone();
+        sorted_entries.sort_by(|a, b| natural_cmp(&a.link, &b.link));
+        let _ = writeln!(lines, "* {dir_name}");
+        for f in &sorted_entries {
+            let _ = writeln!(lines, "  * [{}]({})", f.title, f.link);
+        }
+    }
+
+    lines
+}
+
+/// All `.md` files directly under `dir`, as sidebar entries.
+fn collect_markdown_files(dir: &Path, base_dir: &Path) -> Vec<SidebarEntry> {
+    let mut entries = Vec::new();
+    if let Ok(read_dir) = fs::read_dir(dir) {
+        for entry in read_dir.flatten() {
+            let path = entry.path();
+            if path.extension().is_some_and(|ext| ext == "md") {
+                entries.push(SidebarEntry {
+                    title: extract_title(&path),
+                    link: relative_link(&path, base_dir),
+                });
+            }
+        }
+    }
+    entries
+}
+
+/// The link of a file relative to `base_dir`, without the `.md` suffix.
+fn relative_link(path: &Path, base_dir: &Path) -> String {
+    path.strip_prefix(base_dir)
+        .unwrap_or(path)
+        .to_string_lossy()
+        .replace('\\', "/")
+        .strip_suffix(".md")
+        .unwrap_or_default()
+        .to_string()
+}
+
+/// Extracts the title from the first line `<h1 align="center">TITLE</h1>`,
+/// falling back to the file stem.
+fn extract_title(path: &Path) -> String {
+    let content = fs::read_to_string(path).unwrap_or_default();
+    if let Some(first_line) = content.lines().next() {
+        let trimmed = first_line.trim();
+        if let Some(start) = trimmed.find('>') {
+            let after_start = &trimmed[start + 1..];
+            if let Some(end) = after_start.find('<') {
+                return after_start[..end].to_string();
+            }
+        }
+    }
+    path.file_stem().map_or_else(
+        || "Untitled".to_string(),
+        |s| s.to_string_lossy().into_owned(),
+    )
+}
+
+/// Reads a directory's `.name` file to override its sidebar display name.
+fn get_directory_display_name(dir_path: &Path, fallback: &str) -> String {
+    let name_file = dir_path.join(".name");
+    if name_file.is_file() {
+        fs::read_to_string(&name_file)
+            .ok()
+            .map(|s| s.trim().to_string())
+            .filter(|s| !s.is_empty())
+            .unwrap_or_else(|| fallback.to_string())
+    } else {
+        fallback.to_string()
+    }
+}
+
+/// Numeric-aware comparison: `1-x` sorts before `10-x`, unnumbered last.
+fn natural_cmp(a: &str, b: &str) -> std::cmp::Ordering {
+    extract_leading_number(a)
+        .cmp(&extract_leading_number(b))
+        .then_with(|| a.cmp(b))
+}
+
+/// The leading numeric prefix of a link's file stem, `usize::MAX` if absent.
+fn extract_leading_number(link: &str) -> usize {
+    if let Some(file_stem) = link.rsplit('/').next()
+        && let Some(num_end) = file_stem.find('-')
+        && let Ok(num) = file_stem[..num_end].parse::<usize>()
+    {
+        return num;
+    }
+    usize::MAX
+}
+
+/// Recursively collects all `.md` files under a directory.
+fn collect_md_files(dir: &Path, callback: &mut dyn FnMut(&Path)) {
+    if let Ok(entries) = fs::read_dir(dir) {
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if path.is_dir() {
+                collect_md_files(&path, callback);
+            } else if path.extension().is_some_and(|ext| ext == "md") {
+                callback(&path);
+            }
+        }
+    }
+}
+
+/// Files written by `docsify-refresh`.
+#[derive(Grouped)]
+pub struct ResultDocsifyRefresh {
+    pub written: Vec<String>,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorDocsifyRefresh(pub String);
+
+#[renderer(buffer)]
+pub fn render_docsify_refresh(r: ResultDocsifyRefresh) {
+    for item in r.written {
+        r_println!("{item}");
+    }
+}
+
+#[renderer]
+pub fn render_error_docsify_refresh(e: ErrorDocsifyRefresh, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![e.0]);
+    render_result
+}
diff --git a/dev/ci/src/tools/example_refresh.rs b/dev/ci/src/tools/example_refresh.rs
new file mode 100644
index 0000000..056ec60
--- /dev/null
+++ b/dev/ci/src/tools/example_refresh.rs
@@ -0,0 +1,279 @@
+//! Regenerates the example documentation module and the examples index.
+
+use std::collections::HashMap;
+use std::fs;
+use std::path::Path;
+
+use just_fmt::snake_case;
+use just_template::Template;
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{buffer, command, r_println, renderer},
+};
+use serde::Serialize;
+
+use crate::Next;
+use crate::res::{CargoError, MessagePrinter};
+
+const EXAMPLE_ROOT: &str = "./examples";
+const EXAMPLE_DOCS_OUTPUT: &str = "./mingling/src/example_docs.rs";
+const EXAMPLE_DOCS_TEMPLATE: &str = include_str!("../../../../mingling/src/example_docs.rs.tmpl");
+const EXAMPLES_JSON_OUTPUT: &str = "./docs/examples.json";
+
+#[command(node = "example-refresh")]
+pub fn example_refresh() -> Next {
+    match refresh_all() {
+        Ok(written) => ResultExampleRefresh { written }.to_chain(),
+        Err(e) => ErrorExampleRefresh(e).to_chain(),
+    }
+}
+
+fn refresh_all() -> Result<Vec<String>, String> {
+    let mut written = Vec::new();
+    written.extend(refresh_example_docs()?);
+    written.extend(sync_examples()?);
+    Ok(written)
+}
+
+/// Part 1: regenerate `mingling/src/example_docs.rs` from the examples'
+/// `src/main.rs` (header `//!` + code) and `Cargo.toml`.
+fn refresh_example_docs() -> Result<Vec<String>, String> {
+    let mut template = Template::from(EXAMPLE_DOCS_TEMPLATE);
+
+    let mut examples = Vec::new();
+    let entries =
+        fs::read_dir(EXAMPLE_ROOT).map_err(|e| format!("failed to read {EXAMPLE_ROOT}: {e}"))?;
+    for entry in entries.flatten() {
+        let path = entry.path();
+        if !path.is_dir() {
+            continue;
+        }
+        let name = entry.file_name().to_string_lossy().into_owned();
+        if !name.starts_with("example-") {
+            continue;
+        }
+        examples.push(ExampleContent::read(&name));
+    }
+    examples.sort_by(|a, b| a.name.cmp(&b.name));
+
+    let mut written = Vec::new();
+    for example in examples {
+        template
+            .add_impl("examples".to_string())
+            .push(HashMap::from([
+                ("example_header".to_string(), example.header),
+                ("example_import".to_string(), example.cargo_toml),
+                ("example_code".to_string(), example.code),
+                ("example_name".to_string(), snake_case!(&example.name)),
+            ]));
+        written.push(format!("example_docs: {}", example.name));
+    }
+
+    let template_str = template.to_string();
+    let template_str = template_str
+        .lines()
+        .map(str::trim_end)
+        .collect::<Vec<_>>()
+        .join("\n")
+        + "\n";
+    fs::write(EXAMPLE_DOCS_OUTPUT, template_str)
+        .map_err(|e| format!("failed to write {EXAMPLE_DOCS_OUTPUT}: {e}"))?;
+    written.push(format!("written: {EXAMPLE_DOCS_OUTPUT}"));
+    Ok(written)
+}
+
+struct ExampleContent {
+    name: String,
+    header: String,
+    code: String,
+    cargo_toml: String,
+}
+
+impl ExampleContent {
+    fn read(name: &str) -> Self {
+        let prefix = |s: &str| {
+            s.lines()
+                .map(|line| format!("/// {line}"))
+                .collect::<Vec<_>>()
+                .join("\n")
+        };
+
+        let (header, code) = read_header_and_code(name);
+        Self {
+            name: name.to_string(),
+            header: prefix(&header),
+            code: prefix(&code),
+            cargo_toml: prefix(&read_cargo_toml(name)),
+        }
+    }
+}
+
+/// Reads an example's `src/main.rs`, splitting `//!` doc header from code.
+fn read_header_and_code(name: &str) -> (String, String) {
+    let content = fs::read_to_string(Path::new(EXAMPLE_ROOT).join(name).join("src/main.rs"))
+        .unwrap_or_default();
+    let mut lines = content.lines();
+    let mut header = String::new();
+    let mut code = String::new();
+
+    for line in lines.by_ref() {
+        if line.trim_start().starts_with("//!") {
+            header.push_str(line.trim_start_matches("//!"));
+            header.push('\n');
+        } else {
+            code.push_str(line);
+            code.push('\n');
+            break;
+        }
+    }
+    for line in lines {
+        code.push_str(line);
+        code.push('\n');
+    }
+
+    (header.trim().to_string(), code.trim().to_string())
+}
+
+fn read_cargo_toml(name: &str) -> String {
+    fs::read_to_string(Path::new(EXAMPLE_ROOT).join(name).join("Cargo.toml")).unwrap_or_default()
+}
+
+/// Part 2: regenerate `docs/example-pages/examples.json` from each example's
+/// `page.toml`.
+fn sync_examples() -> Result<Vec<String>, String> {
+    fs::create_dir_all("docs/example-pages")
+        .map_err(|e| format!("failed to create docs/example-pages: {e}"))?;
+
+    let mut examples = Vec::new();
+    let entries =
+        fs::read_dir(EXAMPLE_ROOT).map_err(|e| format!("failed to read {EXAMPLE_ROOT}: {e}"))?;
+    for entry in entries.flatten() {
+        let path = entry.path();
+        if !path.is_dir() {
+            continue;
+        }
+        let dir_name = entry.file_name().to_string_lossy().into_owned();
+        let page_toml = path.join("page.toml");
+        if !page_toml.is_file() {
+            continue;
+        }
+        let Ok(content) = fs::read_to_string(&page_toml) else {
+            continue;
+        };
+        let Ok(table) = content.parse::<toml::Value>() else {
+            eprintln!("Warning: failed to parse {}", page_toml.display());
+            continue;
+        };
+        let Some(example) = table.get("example") else {
+            continue;
+        };
+
+        let get = |key: &str| {
+            example
+                .get(key)
+                .and_then(|v| v.as_str())
+                .unwrap_or_default()
+        };
+        let str_vec = |key: &str| {
+            example
+                .get(key)
+                .and_then(|v| v.as_array())
+                .map(|a| {
+                    a.iter()
+                        .filter_map(|v| v.as_str().map(str::to_string))
+                        .collect()
+                })
+                .unwrap_or_default()
+        };
+
+        let id = get("id");
+        examples.push(ExampleMeta {
+            id: if id.is_empty() {
+                dir_name.clone()
+            } else {
+                id.to_string()
+            },
+            name: {
+                let name = get("name");
+                if name.is_empty() {
+                    dir_name.clone()
+                } else {
+                    name.to_string()
+                }
+            },
+            icon: {
+                let icon = get("icon");
+                if icon.is_empty() {
+                    "📦".to_string()
+                } else {
+                    icon.to_string()
+                }
+            },
+            category: get("category").to_string(),
+            desc: get("desc").to_string(),
+            tags: str_vec("tags"),
+            files: {
+                let files = str_vec("files");
+                if files.is_empty() {
+                    vec!["Cargo.toml".to_string(), "src/main.rs".to_string()]
+                } else {
+                    files
+                }
+            },
+        });
+    }
+
+    // Basic first, then alphabetical.
+    examples.sort_by(
+        |a, b| match (a.id == "example-basic", b.id == "example-basic") {
+            (true, false) => std::cmp::Ordering::Less,
+            (false, true) => std::cmp::Ordering::Greater,
+            _ => a.id.cmp(&b.id),
+        },
+    );
+
+    let json = serde_json::to_string_pretty(&examples)
+        .map_err(|e| format!("failed to serialize examples: {e}"))?;
+    fs::write(EXAMPLES_JSON_OUTPUT, json)
+        .map_err(|e| format!("failed to write {EXAMPLES_JSON_OUTPUT}: {e}"))?;
+
+    Ok(vec![format!(
+        "synced: {} examples -> {EXAMPLES_JSON_OUTPUT}",
+        examples.len()
+    )])
+}
+
+/// One entry of `docs/example-pages/examples.json`.
+#[derive(Serialize)]
+struct ExampleMeta {
+    id: String,
+    name: String,
+    icon: String,
+    category: String,
+    desc: String,
+    tags: Vec<String>,
+    files: Vec<String>,
+}
+
+/// Files written by `example-refresh`.
+#[derive(Grouped)]
+pub struct ResultExampleRefresh {
+    pub written: Vec<String>,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorExampleRefresh(pub String);
+
+#[renderer(buffer)]
+pub fn render_example_refresh(r: ResultExampleRefresh) {
+    for item in r.written {
+        r_println!("{item}");
+    }
+}
+
+#[renderer]
+pub fn render_error_example_refresh(e: ErrorExampleRefresh, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![e.0]);
+    render_result
+}
diff --git a/dev/ci/src/tools/features_refresh.rs b/dev/ci/src/tools/features_refresh.rs
new file mode 100644
index 0000000..6776fb0
--- /dev/null
+++ b/dev/ci/src/tools/features_refresh.rs
@@ -0,0 +1,96 @@
+//! Regenerates `mingling/src/features.rs` from the `[features]` section of
+//! `mingling/Cargo.toml`.
+
+use std::collections::HashMap;
+use std::fs;
+
+use just_fmt::snake_case;
+use just_template::Template;
+use mingling::{
+    Grouped, RenderResult, Routable,
+    macros::{buffer, command, r_println, renderer},
+};
+
+use crate::Next;
+use crate::res::{CargoError, MessagePrinter};
+
+const CARGO_TOML_PATH: &str = "./mingling/Cargo.toml";
+const OUTPUT_PATH: &str = "./mingling/src/features.rs";
+const TEMPLATE_CONTENT: &str = include_str!("../../../../mingling/src/features.rs.tmpl");
+
+#[command(node = "features-refresh")]
+pub fn features_refresh() -> Next {
+    match gen_feature_module() {
+        Ok(written) => ResultFeaturesRefresh { written }.to_chain(),
+        Err(e) => ErrorFeaturesRefresh(e).to_chain(),
+    }
+}
+
+fn gen_feature_module() -> Result<Vec<String>, String> {
+    let features = parse_features()?;
+
+    let mut template = Template::from(TEMPLATE_CONTENT);
+    let mut written = Vec::new();
+    for feat_name in &features {
+        let feat_const_name = snake_case!(feat_name).to_uppercase();
+        template
+            .add_impl("features".to_string())
+            .push(HashMap::from([
+                ("feat_name".to_string(), feat_name.clone()),
+                ("feat_const_name".to_string(), feat_const_name),
+            ]));
+        written.push(format!("feature: {feat_name}"));
+    }
+
+    let template_str = template.to_string();
+    let template_str = template_str
+        .lines()
+        .map(str::trim_end)
+        .collect::<Vec<_>>()
+        .join("\n")
+        + "\n";
+    fs::write(OUTPUT_PATH, template_str)
+        .map_err(|e| format!("failed to write {OUTPUT_PATH}: {e}"))?;
+    written.push(format!("written: {OUTPUT_PATH}"));
+    Ok(written)
+}
+
+/// All feature names from the `[features]` section, sorted.
+fn parse_features() -> Result<Vec<String>, String> {
+    let content = fs::read_to_string(CARGO_TOML_PATH)
+        .map_err(|e| format!("failed to read {CARGO_TOML_PATH}: {e}"))?;
+    let table: toml::Value = content
+        .parse()
+        .map_err(|e| format!("failed to parse {CARGO_TOML_PATH}: {e}"))?;
+    let features = table
+        .get("features")
+        .and_then(|v| v.as_table())
+        .ok_or_else(|| format!("no [features] section in {CARGO_TOML_PATH}"))?;
+
+    let mut names: Vec<String> = features.keys().cloned().collect();
+    names.sort();
+    Ok(names)
+}
+
+/// Feature names written by `features-refresh`.
+#[derive(Grouped)]
+pub struct ResultFeaturesRefresh {
+    pub written: Vec<String>,
+}
+
+#[derive(Grouped, Default)]
+pub struct ErrorFeaturesRefresh(pub String);
+
+#[renderer(buffer)]
+pub fn render_features_refresh(r: ResultFeaturesRefresh) {
+    for item in r.written {
+        r_println!("{item}");
+    }
+}
+
+#[renderer]
+pub fn render_error_features_refresh(e: ErrorFeaturesRefresh, error: &CargoError) -> RenderResult {
+    let render_result = RenderResult::new();
+    error.println(vec![e.0]);
+    render_result
+}
diff --git a/dev/ci/tmpls/report.md b/dev/ci/tmpls/report.md
new file mode 100644
index 0000000..020fda2
--- /dev/null
+++ b/dev/ci/tmpls/report.md
@@ -0,0 +1,9 @@
+<h1 align="center">Mingling CI Results</h1>
+
+<p align="center"> <<<date>>> - <<<commit_hash>>> </p>
+
+>>>>>>>>>> task_sections
+@@@ >>> task_sections
+<<<section>>>
+
+@@@ <<<
diff --git a/dev/ci/tmpls/task_section.md b/dev/ci/tmpls/task_section.md
new file mode 100644
index 0000000..78c9801
--- /dev/null
+++ b/dev/ci/tmpls/task_section.md
@@ -0,0 +1,18 @@
+## Task: <<<task_name>>>
+
+| Item-Name   | Location | PASS (Windows) | PASS (Linux) | PASS (Mac OS) |
+| ----------- | -------- | -------------- | ------------ | ------------- |
+>>>>>>>>>> rows
+@@@ >>> rows
+| <<<item_name>>> | <<<location>>> | <<<pass_win>>> | <<<pass_linux>>> | <<<pass_mac>>> |
+@@@ <<<
+
+>>>>>>>>>> fails
+@@@ >>> fails
+### Fail: <<<item_name>>>
+
+```stdout
+<<<stdout>>>
+```
+
+@@@ <<<
diff --git a/dev/configs/ci-ignored-dirs.txt b/dev/configs/ci-ignored-dirs.txt
new file mode 100644
index 0000000..60b9e6e
--- /dev/null
+++ b/dev/configs/ci-ignored-dirs.txt
@@ -0,0 +1,5 @@
+# Temp
+./.temp/
+
+# Self
+./dev/ci/
diff --git a/dev/configs/docs-lang.txt b/dev/configs/docs-lang.txt
new file mode 100644
index 0000000..96d4f3c
--- /dev/null
+++ b/dev/configs/docs-lang.txt
@@ -0,0 +1,2 @@
+./pages/
+./_zh_CN/pages/
diff --git a/dev/configs/rust-analyzer.json b/dev/configs/rust-analyzer.json
new file mode 100644
index 0000000..ab97bf7
--- /dev/null
+++ b/dev/configs/rust-analyzer.json
@@ -0,0 +1,16 @@
+{
+    "rust-analyzer.check.command": "clippy",
+    "rust-analyzer.checkOnSave": true,
+    "rust-analyzer.files.exclude": ["**/target/**", "**/.temp/**"],
+    "rust-analyzer.linkedProjects": [
+        ".run/Cargo.toml",
+        "dev/ci/Cargo.toml",
+        "mingling_pathf/test/Cargo.toml",
+        "arg_picker/Cargo.toml",
+        "arg_picker/test/Cargo.toml",
+        "mingling_cli/Cargo.toml"
+    ],
+    "rust-analyzer.cargo.features": [],
+    "rust-analyzer.procMacro.enable": true,
+    "rust-analyzer.procMacro.attributes.enable": true
+}
diff --git a/dev/configs/verified-docs.toml b/dev/configs/verified-docs.toml
new file mode 100644
index 0000000..df2469b
--- /dev/null
+++ b/dev/configs/verified-docs.toml
@@ -0,0 +1,8 @@
+# Files marked in the following document,
+# all rust code blocks inside will be verified in CI to ensure they can compile
+
+[verified]
+readme = "./README.md"
+getting_started = "./GETTING-STARTED.md"
+documents_en_us = "./docs/pages/**"
+documents_zh_cn = "./docs/_zh_CN/pages/**"
diff --git a/dev/configs/version-files.toml b/dev/configs/version-files.toml
new file mode 100644
index 0000000..30fda5e
--- /dev/null
+++ b/dev/configs/version-files.toml
@@ -0,0 +1,39 @@
+[[file]]
+file = "./Cargo.toml"
+pattern = "version = \"{VER}\""
+
+[[file]]
+file = "./mingling_cli/Cargo.toml"
+pattern = "version = \"{VER}\""
+
+[[file]]
+file = "./README.md"
+pattern = "version = \"{VER}\""
+
+[[file]]
+file = "./docs/_zh_CN/pages/1-getting-started.md"
+pattern = "version = \"{VER}\""
+
+[[file]]
+file = "./docs/pages/1-getting-started.md"
+pattern = "version = \"{VER}\""
+
+[[file]]
+file = "./docs/res/guide.txt"
+pattern = "mingling = \"{VER}\""
+
+[[file]]
+file = "./index.html"
+pattern = "cargo add mingling@{VER}"
+
+[[file]]
+file = "./index.html"
+pattern = "version = \"{VER}\""
+
+[[file]]
+file = "./index.html"
+pattern = "mling proj-init {VER}@basic"
+
+[[file]]
+file = "./dist/index.html"
+pattern = "mling proj-init {VER}@basic"
diff --git a/dev/run/.gitignore b/dev/run/.gitignore
new file mode 100644
index 0000000..40f407e
--- /dev/null
+++ b/dev/run/.gitignore
@@ -0,0 +1,5 @@
+# All temp build artifacts will be stored in this dir
+/target
+
+# If you want to add some Rust crates? Remove this line
+# /Cargo.*
diff --git a/dev/run/Cargo.lock b/dev/run/Cargo.lock
new file mode 100644
index 0000000..3117d0b
--- /dev/null
+++ b/dev/run/Cargo.lock
@@ -0,0 +1,572 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "adler2"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
+
+[[package]]
+name = "arg-picker"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd62c395708a956e98e06b6b18200b2a65a5ae63448ed7d59cca32833aaf7265"
+dependencies = [
+ "arg-picker-macros",
+ "just_fmt 0.2.0",
+]
+
+[[package]]
+name = "arg-picker-macros"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04fddbb5c1f26450cfc6aded0559b759b292d400dba1ff4e45128f3e0e1ffe6b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "bitflags"
+version = "2.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da"
+
+[[package]]
+name = "bumpalo"
+version = "3.20.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
+[[package]]
+name = "colored"
+version = "3.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "faf9468729b8cbcea668e36183cb69d317348c2e08e994829fb56ebfdfbaac34"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "console"
+version = "0.16.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d64e8af5551369d19cf50138de61f1c42074ab970f74e99be916646777f8fc87"
+dependencies = [
+ "encode_unicode",
+ "libc",
+ "unicode-width",
+ "windows-sys",
+]
+
+[[package]]
+name = "crc32fast"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9481c1c90cbf2ac953f07c8d4a58aa3945c425b7185c9154d67a65e4230da511"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "encode_unicode"
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diff --git a/dev/run/Cargo.toml b/dev/run/Cargo.toml
new file mode 100644
index 0000000..4935f2d
--- /dev/null
+++ b/dev/run/Cargo.toml
@@ -0,0 +1,26 @@
+[package]
+name = "tools"
+version = "0.1.0"
+edition = "2024"
+authors = ["Weicao-CatilGrass"]
+description = "Development tools for mingling"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/catilgrass/mingling"
+readme = "../README.md"
+keywords = ["cli", "development", "tools"]
+categories = ["command-line-interface", "development-tools"]
+
+[dependencies]
+just_template = "0.1.3"
+just_fmt = "0.1.2"
+colored = "3.1.1"
+toml = "0.8"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+tokio = { version = "1", features = ["rt-multi-thread", "macros"] }
+indicatif = "0.18.4"
+flate2 = "1"
+tar = "0.4"
+arg-picker = "0.1.0"
+
+[workspace]
diff --git a/dev/run/src/bin/ci.py b/dev/run/src/bin/ci.py
new file mode 100644
index 0000000..6234a19
--- /dev/null
+++ b/dev/run/src/bin/ci.py
@@ -0,0 +1,75 @@
+"""Full CI orchestration for the mingling project.
+
+Runs every `cargo ci` step in order: lock the workspace, run all checks,
+refresh the generated artifacts, then unlock. The final `git-unlock` doubles
+as the idempotency check: it fails with a non-zero exit code when the run
+left the working tree dirty.
+
+The script locates the git repository root and runs with it as the working
+directory, so it can be invoked from anywhere inside the repo.
+"""
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+# The pipeline steps, in execution order, as (command, args) pairs.
+STEPS: list[tuple[str, list[str]]] = [
+    ("git-lock", []),
+    ("report-clean", []),
+    ("build-check", []),
+    ("clippy-check", []),
+    ("test-all", []),
+    ("example-check", []),
+    ("docs-check", []),
+    ("example-refresh", []),
+    ("docsify-refresh", []),
+    ("features-refresh", []),
+    # Idempotency check: exits non-zero if CI contaminated the workspace, and
+    # prints the diff of the contamination before restoring.
+    ("git-unlock", ["--show-diff"]),
+]
+
+
+def find_repo_root() -> Path:
+    """Return the nearest ancestor directory containing `.git`."""
+    current = Path.cwd()
+    for directory in (current, *current.parents):
+        if (directory / ".git").is_dir():
+            return directory
+    raise SystemExit("error: not inside a git repository")
+
+
+def main() -> int:
+    root = find_repo_root()
+    os.chdir(root)
+
+    # Signature banner: docs/res/ci_banner.txt, relative to this script
+    # (.run/src/bin -> four levels up is the repo root).
+    banner = (
+        Path(__file__).resolve().parent.parent.parent.parent
+        / "docs"
+        / "res"
+        / "ci_banner.txt"
+    )
+    try:
+        print(banner.read_text(encoding="utf-8"), end="")
+    except OSError:
+        pass
+
+    for command, args in STEPS:
+        print(f"==> cargo ci {' '.join([command, *args])}")
+        result = subprocess.run(["cargo", "ci", command, *args], check=False)
+        if result.returncode != 0:
+            print(
+                f"error: step `{command}` failed with exit code {result.returncode}",
+                file=sys.stderr,
+            )
+            return result.returncode
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/dev/run/src/bin/clippy-fix.ps1 b/dev/run/src/bin/clippy-fix.ps1
new file mode 100644
index 0000000..1d24f92
--- /dev/null
+++ b/dev/run/src/bin/clippy-fix.ps1
@@ -0,0 +1,8 @@
+$starting_dir = Get-Location
+Get-ChildItem -Recurse -Filter "Cargo.toml" | ForEach-Object {
+    $project_dir = $_.DirectoryName
+    Push-Location $project_dir
+    cargo clippy --fix --allow-dirty --allow-no-vcs --quiet
+    Pop-Location
+}
+Set-Location $starting_dir
diff --git a/dev/run/src/bin/clippy-fix.sh b/dev/run/src/bin/clippy-fix.sh
new file mode 100755
index 0000000..9771ad4
--- /dev/null
+++ b/dev/run/src/bin/clippy-fix.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+find . -name "Cargo.toml" -type f | while read -r cargo_file; do
+    project_dir=$(dirname "$cargo_file")
+    (cd "$project_dir" && cargo clippy --fix --allow-dirty --allow-no-vcs --quiet)
+done
diff --git a/dev/run/src/bin/cov-test.rs b/dev/run/src/bin/cov-test.rs
new file mode 100644
index 0000000..f62ff01
--- /dev/null
+++ b/dev/run/src/bin/cov-test.rs
@@ -0,0 +1,571 @@
+//! Coverage test generator for mingling.
+//!
+//! This script requires the **fork** of cargo-llvm-cov:
+//! <https://github.com/Weicao-CatilGrass/cargo-llvm-cov>
+//!
+//! The upstream `report` command cannot include binaries of non-workspace
+//! crates (examples and test crates) and unconditionally filters
+//! `tests`/`examples` source files. The fork adds two flags to fix this:
+//!
+//! - `--object <PATH>`: include arbitrary binaries in the report
+//!   (upstream issue taiki-e/cargo-llvm-cov#367)
+//! - `--include-examples`: stop filtering source files under the
+//!   `examples` directory (upstream issue taiki-e/cargo-llvm-cov#503)
+//!
+//! The script itself does not use `--include-examples`; it passes
+//! `--no-default-ignore-filename-regex` and supplies its own filter so that
+//! `tests`/`benches` directories stay in the report too.
+//!
+//! Install it with:
+//!
+//! ```bash
+//! cargo install --git https://github.com/Weicao-CatilGrass/cargo-llvm-cov cargo-llvm-cov
+//! ```
+
+use std::fs;
+use std::path::{Path, PathBuf};
+
+use serde::Deserialize;
+use tools::{eprintln_cargo_style, println_cargo_style, run_cmd};
+
+const OUTPUT_DIR: &str = "docs/cov-test";
+
+/// Shared target directory for all `cargo llvm-cov` runs.
+///
+/// Pointing every run at the same target dir makes all of them share the
+/// instrumented build cache and, more importantly, accumulate profraw files
+/// in one place so the final `report` can merge everything.
+const COV_TARGET_DIR: &str = ".temp/cov-llvm";
+
+/// An example's `test.toml` (`[[runs]]` entries).
+#[derive(Deserialize)]
+struct TestConfig {
+    runs: Vec<TestCase>,
+}
+
+/// One `[[runs]]` entry of an example's `test.toml`.
+#[derive(Deserialize)]
+struct TestCase {
+    input: Vec<String>,
+}
+
+fn main() {
+    let repo_root = find_git_repo().expect("Failed to find git repository root");
+    let output_path = repo_root.join(OUTPUT_DIR);
+    let cov_target = repo_root.join(COV_TARGET_DIR);
+
+    // Read features from [package.metadata.docs.rs]
+    let features = tools::read_features().unwrap_or_else(|e| {
+        eprintln!("Error: {}", e);
+        std::process::exit(1);
+    });
+    let features_arg = features.join(",");
+
+    // Ensure output directory exists
+    std::fs::create_dir_all(&output_path).expect("Failed to create output directory");
+    std::fs::create_dir_all(&cov_target).expect("Failed to create cov target directory");
+
+    // All `cargo llvm-cov` invocations below share one target dir, so profraw
+    // files accumulate and are merged by the final `report` command.
+    // SAFETY: set before any thread is spawned; this process only shells out
+    // to subcommands via std::process.
+    unsafe {
+        std::env::set_var("CARGO_LLVM_COV_TARGET_DIR", &cov_target);
+    }
+
+    // Drop stale profraw from previous runs (keep the instrumented build cache).
+    clean_old_profraw(&cov_target);
+
+    println_cargo_style!("Features: {}", features_arg);
+    println_cargo_style!("Target: {}", cov_target.display());
+
+    // 1. Workspace tests
+    println_cargo_style!("Running: cargo llvm-cov test --workspace");
+    run_cmd!(format!(
+        "cargo llvm-cov test --no-report --workspace --features \"{}\" --color always",
+        features_arg
+    ))
+    .unwrap_or_else(|code| {
+        eprintln_cargo_style!("workspace tests failed with exit code {}", code);
+        std::process::exit(code);
+    });
+
+    // 2. Integration test crates under mingling_core/tests (excluded from the
+    //    workspace, so they need their own `--manifest-path` runs)
+    for manifest in find_test_crate_manifests(&repo_root) {
+        println_cargo_style!(
+            "Running: cargo llvm-cov test {}",
+            manifest.file_name().unwrap_or_default().to_string_lossy()
+        );
+        run_cmd!(format!(
+            "cargo llvm-cov test --no-report --manifest-path \"{}\" --color always",
+            manifest.display()
+        ))
+        .unwrap_or_else(|code| {
+            eprintln_cargo_style!(
+                "test crate {} failed with exit code {}",
+                manifest.display(),
+                code
+            );
+            std::process::exit(code);
+        });
+    }
+
+    // 3. Examples: build each example with explicit RUSTFLAGS, then execute
+    //    every command declared in the example's test.toml directly.
+    //
+    //    NOTE: `cargo llvm-cov run` cannot be used here. Its rustc wrapper
+    //    only instruments the crates of the *current* cargo project (with
+    //    `--manifest-path` that is the example itself), so the mingling
+    //    libraries — being dependencies — would not be instrumented and their
+    //    coverage would silently be lost (once_exec.rs showed 0%). Building
+    //    with plain RUSTFLAGS instruments the whole dependency graph.
+    //
+    //    RUSTFLAGS/CARGO_TARGET_DIR are set process-wide here because only the
+    //    `report` step (which does not compile) follows. Non-zero exit codes
+    //    are expected for some examples (e.g. `--help` exits with 2); profraw
+    //    is still written.
+    unsafe {
+        std::env::set_var("RUSTFLAGS", "-Cinstrument-coverage");
+        std::env::set_var("CARGO_TARGET_DIR", &cov_target);
+    }
+    let examples = load_example_commands(&repo_root);
+    let mut built = std::collections::HashSet::new();
+    for (example, input) in &examples {
+        if built.insert(example.clone()) {
+            println_cargo_style!("Building: {}", example);
+            run_cmd!(format!(
+                "cargo build --manifest-path examples/{}/Cargo.toml --color always",
+                example
+            ))
+            .unwrap_or_else(|code| {
+                eprintln_cargo_style!(
+                    "build of example {} failed with exit code {}",
+                    example,
+                    code
+                );
+                std::process::exit(code);
+            });
+        }
+        let binary = cov_target.join("debug").join(get_binary_name(example));
+        let profraw = format!(
+            "{}/example-{}.%p.profraw",
+            cov_target.to_string_lossy(),
+            example
+        );
+        match std::process::Command::new(&binary)
+            .args(input)
+            .env("LLVM_PROFILE_FILE", &profraw)
+            .status()
+        {
+            Ok(status) if status.success() => {}
+            Ok(status) => println_cargo_style!(
+                "Warning: example {} exited with {:?}, profraw still recorded",
+                example,
+                status.code()
+            ),
+            Err(e) => eprintln_cargo_style!("Failed to run example {}: {}", example, e),
+        }
+    }
+
+    // 4. Collect the binaries of non-workspace crates (examples + test crates).
+    //    The automatic object-file detection only knows workspace members, so
+    //    these must be passed explicitly via --object.
+    let member_names = workspace_member_names(&repo_root);
+    let object_args = collect_object_args(&cov_target, &member_names);
+
+    // 5. Generate the merged HTML report.
+    //
+    //    --no-default-ignore-filename-regex: the default regex unconditionally
+    //    excludes `examples`/`tests` directories, which is exactly what we want
+    //    to include here, so we take over the filter ourselves.
+    let ignore_re = build_ignore_regex(&cov_target);
+    println_cargo_style!("Running: cargo llvm-cov report --html");
+    run_cmd!(format!(
+        "cargo llvm-cov report --html --output-dir \"{}\" --no-default-ignore-filename-regex --ignore-filename-regex \"{}\" {} --color always",
+        output_path.to_string_lossy(),
+        ignore_re,
+        object_args
+    ))
+    .unwrap_or_else(|code| {
+        eprintln_cargo_style!("cargo llvm-cov report failed with exit code {}", code);
+        std::process::exit(code);
+    });
+
+    // Move files from <output_path>/html/ to <output_path>
+    let html_dir = output_path.join("html");
+    if html_dir.exists() && html_dir.is_dir() {
+        println_cargo_style!("Moving files from {}/html/ to {}/", OUTPUT_DIR, OUTPUT_DIR);
+
+        for entry in fs::read_dir(&html_dir).expect("Failed to read html directory") {
+            let entry = entry.expect("Failed to read entry");
+            let entry_path = entry.path();
+            let file_name = entry
+                .file_name()
+                .to_str()
+                .expect("Invalid filename")
+                .to_owned();
+
+            let dest_path = output_path.join(&file_name);
+            if dest_path.exists() {
+                if dest_path.is_dir() {
+                    fs::remove_dir_all(&dest_path).unwrap_or_else(|e| {
+                        eprintln!(
+                            "Warning: could not remove directory {}: {}",
+                            dest_path.display(),
+                            e
+                        );
+                    });
+                } else {
+                    fs::remove_file(&dest_path).unwrap_or_else(|e| {
+                        eprintln!(
+                            "Warning: could not remove file {}: {}",
+                            dest_path.display(),
+                            e
+                        );
+                    });
+                }
+            }
+            fs::rename(&entry_path, &dest_path).unwrap_or_else(|e| {
+                eprintln!("Warning: could not move {}: {}", entry_path.display(), e);
+            });
+        }
+
+        fs::remove_dir(&html_dir).unwrap_or_else(|e| {
+            eprintln!("Warning: could not remove html directory: {}", e);
+        });
+
+        println_cargo_style!("Files moved successfully.");
+    }
+
+    // 6. Recolor the per-file coverage summary with project-specific
+    //    thresholds: 0-50% red, 51-80% yellow, 81-100% green. llvm-cov's
+    //    built-in thresholds differ, and the color is assigned when the HTML
+    //    is generated, so the summary table is rewritten here.
+    let index_path = output_path.join("index.html");
+    if let Err(e) = recolor_report_index(&index_path) {
+        eprintln_cargo_style!("Warning: failed to recolor {}: {}", index_path.display(), e);
+    }
+
+    println_cargo_style!(
+        "Done: coverage report generated at {}/index.html",
+        OUTPUT_DIR
+    );
+}
+
+/// Remove `*.profraw` from the shared target dir so stale data from previous
+/// runs does not pollute the merged report. The instrumented build cache
+/// (everything else) is kept.
+fn clean_old_profraw(cov_target: &Path) {
+    if let Ok(entries) = fs::read_dir(cov_target) {
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if path.extension().is_some_and(|e| e == "profraw") {
+                let _ = fs::remove_file(&path);
+            }
+        }
+    }
+}
+
+/// All `mingling_core/tests/<crate>/Cargo.toml` manifests.
+fn find_test_crate_manifests(repo_root: &Path) -> Vec<PathBuf> {
+    let tests_dir = repo_root.join("mingling_core/tests");
+    let mut manifests = Vec::new();
+    if let Ok(entries) = fs::read_dir(&tests_dir) {
+        for entry in entries.flatten() {
+            let manifest = entry.path().join("Cargo.toml");
+            if manifest.is_file() {
+                manifests.push(manifest);
+            }
+        }
+    }
+    manifests.sort();
+    manifests
+}
+
+/// Parse every `examples/<name>/test.toml` into `(example_name, input)` pairs.
+fn load_example_commands(repo_root: &Path) -> Vec<(String, Vec<String>)> {
+    let examples_dir = repo_root.join("examples");
+    let mut entries: Vec<_> = std::fs::read_dir(&examples_dir)
+        .unwrap_or_else(|e| {
+            eprintln_cargo_style!("Failed to read {}: {}", examples_dir.display(), e);
+            std::process::exit(1);
+        })
+        .flatten()
+        .collect();
+    entries.sort_by_key(|e| e.file_name());
+
+    let mut pairs = Vec::new();
+    for entry in entries {
+        let path = entry.path();
+        if !path.is_dir() {
+            continue;
+        }
+        let test_toml = path.join("test.toml");
+        if !test_toml.is_file() {
+            continue;
+        }
+        let name = path
+            .file_name()
+            .and_then(|n| n.to_str())
+            .unwrap_or_default()
+            .to_string();
+        let content = fs::read_to_string(&test_toml).unwrap_or_else(|e| {
+            eprintln_cargo_style!("Failed to read {}: {}", test_toml.display(), e);
+            std::process::exit(1);
+        });
+        let config: TestConfig = toml::from_str(&content).unwrap_or_else(|e| {
+            eprintln_cargo_style!("Failed to parse {}: {}", test_toml.display(), e);
+            std::process::exit(1);
+        });
+        for case in config.runs {
+            pairs.push((name.clone(), case.input));
+        }
+    }
+    pairs
+}
+
+/// Names of all workspace members, from `cargo metadata --no-deps`.
+fn workspace_member_names(repo_root: &Path) -> Vec<String> {
+    let Ok(output) = tools::run_cmd_capture_with_dir(
+        "cargo metadata --no-deps --format-version 1".to_string(),
+        repo_root,
+    ) else {
+        return Vec::new();
+    };
+    let Ok(json) = serde_json::from_str::<serde_json::Value>(&output) else {
+        return Vec::new();
+    };
+    json["packages"]
+        .as_array()
+        .into_iter()
+        .flatten()
+        .filter_map(|p| p["name"].as_str().map(str::to_owned))
+        .collect()
+}
+
+/// Collect the binaries of non-workspace crates (examples and test crates)
+/// from the shared target dir, as `--object <path>` arguments.
+///
+/// - `debug/` root: example binaries (built via `cargo llvm-cov run`).
+/// - `debug/deps/`: test crate binaries (e.g. `integration-<hash>`); their
+///   names do not follow a single pattern, so anything that is not a
+///   workspace-member binary and not a proc-macro `.so` is collected.
+///
+/// Workspace member binaries are detected automatically by `report` and must
+/// NOT be passed again (duplicate `-object` entries produce duplicated
+/// output). Hard links to the same file are deduplicated by inode.
+fn collect_object_args(cov_target: &Path, member_names: &[String]) -> String {
+    let debug_dir = cov_target.join("debug");
+    let mut objects = Vec::new();
+    let mut seen = std::collections::HashSet::new();
+
+    for dir in [debug_dir.clone(), debug_dir.join("deps")] {
+        let Ok(entries) = fs::read_dir(&dir) else {
+            continue;
+        };
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if !path.is_file() || !is_executable(&path) {
+                continue;
+            }
+            if !seen.insert(file_id(&path)) {
+                continue;
+            }
+            let Some(name) = path.file_name().and_then(|s| s.to_str()) else {
+                continue;
+            };
+            // Proc-macro shared objects are either workspace members (picked
+            // up automatically) or external deps (excluded from the report
+            // by the ignore regex), so never pass them explicitly.
+            if name.starts_with("lib") && name.ends_with(".so") {
+                continue;
+            }
+            if is_workspace_member_binary(name, member_names) {
+                continue;
+            }
+            objects.push(path);
+        }
+    }
+
+    objects.sort();
+    objects
+        .iter()
+        .map(|p| format!("--object \"{}\"", p.to_string_lossy()))
+        .collect::<Vec<_>>()
+        .join(" ")
+}
+
+/// True if the binary name (e.g. `mingling_core-fea14a01b88afcaa`) belongs to
+/// a workspace member.
+fn is_workspace_member_binary(name: &str, member_names: &[String]) -> bool {
+    let stem = strip_cargo_hash(name);
+    member_names.iter().any(|m| stem == m)
+}
+
+/// Strip the cargo-generated hash suffix: `mingling_core-fea14a01b88afcaa` ->
+/// `mingling_core`. Returns the input unchanged if there is no such suffix.
+fn strip_cargo_hash(name: &str) -> &str {
+    let Some(idx) = name.rfind('-') else {
+        return name;
+    };
+    let (head, tail) = name.split_at(idx);
+    let hash = &tail[1..];
+    if hash.len() == 16 && hash.chars().all(|c| c.is_ascii_hexdigit()) {
+        head
+    } else {
+        name
+    }
+}
+
+/// A stable identity for deduplicating hard links: device+inode on Unix,
+/// canonicalized path elsewhere.
+fn file_id(path: &Path) -> String {
+    #[cfg(unix)]
+    {
+        use std::os::unix::fs::MetadataExt as _;
+        if let Ok(metadata) = fs::metadata(path) {
+            return format!("{}:{}", metadata.dev(), metadata.ino());
+        }
+    }
+    fs::canonicalize(path)
+        .unwrap_or_else(|_| path.to_path_buf())
+        .to_string_lossy()
+        .into_owned()
+}
+
+/// Resolve binary filename for the given example.
+///
+/// The binary name matches the package name. On Windows, the `.exe` suffix is
+/// required.
+fn get_binary_name(example_name: &str) -> String {
+    let base = example_name;
+    if cfg!(target_os = "windows") {
+        format!("{base}.exe")
+    } else {
+        base.to_string()
+    }
+}
+
+/// Rewrite the per-file coverage colors in `index.html` with project-specific
+/// thresholds: 0-50% red, 51-80% yellow, 81-100% green.
+fn recolor_report_index(index_path: &Path) -> std::io::Result<()> {
+    let content = fs::read_to_string(index_path)?;
+    fs::write(index_path, recolor_coverage_table(&content))
+}
+
+/// Recolor every `<td class='column-entry-...'><pre>XX% ...</pre></td>` cell
+/// in the coverage summary table according to the new thresholds. Cells with
+/// no data (e.g. branch coverage `- (0/0)`, class `gray`) are left as-is.
+fn recolor_coverage_table(input: &str) -> String {
+    const TD: &str = "<td class='column-entry-";
+    let mut out = String::with_capacity(input.len());
+    let mut rest = input;
+    while let Some(pos) = rest.find(TD) {
+        out.push_str(&rest[..pos + TD.len()]);
+        rest = &rest[pos + TD.len()..];
+        let Some(pre_end) = rest.find("'><pre>") else {
+            out.push_str(rest);
+            return out;
+        };
+        let color = &rest[..pre_end];
+        let tail = &rest[pre_end + "'><pre>".len()..];
+        let pct: String = tail
+            .trim_start()
+            .chars()
+            .take_while(|c| c.is_ascii_digit() || *c == '.')
+            .collect();
+        let new_color = match pct.parse::<f64>() {
+            Ok(v) if v <= 50.0 => "red",
+            Ok(v) if v <= 80.0 => "yellow",
+            Ok(_) => "green",
+            Err(_) => color, // no data (e.g. gray branch column)
+        };
+        out.push_str(new_color);
+        out.push_str("'><pre>");
+        rest = tail;
+    }
+    out.push_str(rest);
+    out
+}
+
+/// True if the file is executable: mode bits on Unix, `.exe` on Windows.
+fn is_executable(path: &Path) -> bool {
+    #[cfg(unix)]
+    {
+        use std::os::unix::fs::PermissionsExt as _;
+        let Ok(metadata) = std::fs::metadata(path) else {
+            return false;
+        };
+        metadata.permissions().mode() & 0o111 != 0
+    }
+    #[cfg(not(unix))]
+    {
+        path.extension()
+            .is_some_and(|e| e.eq_ignore_ascii_case("exe"))
+    }
+}
+
+/// Regex that keeps only the project's own sources in the report:
+/// excludes the shared llvm-cov target dir, the standard library, and
+/// external dependencies.
+fn build_ignore_regex(cov_target: &Path) -> String {
+    let target = regex_escape_path(cov_target);
+    format!(
+        "^{target}($|/)|/rustc/([0-9a-f]+|[0-9]+\\.[0-9]+\\.[0-9]+)/|/\\.cargo/(registry|git)/|/\\.rustup/toolchains($|/)"
+    )
+}
+
+/// Escape a path for use inside a regular expression (as a literal prefix).
+fn regex_escape_path(path: &Path) -> String {
+    let s = path.to_string_lossy().replace('\\', "/");
+    let mut escaped = String::with_capacity(s.len());
+    for ch in s.chars() {
+        if ch == '.' || ch == '-' {
+            escaped.push('\\');
+        }
+        escaped.push(ch);
+    }
+    escaped
+}
+
+fn find_git_repo() -> Option<std::path::PathBuf> {
+    let mut current_dir = std::env::current_dir().ok()?;
+
+    loop {
+        let git_dir = current_dir.join(".git");
+        if git_dir.exists() && git_dir.is_dir() {
+            return Some(current_dir);
+        }
+
+        if !current_dir.pop() {
+            break;
+        }
+    }
+
+    None
+}
+
+#[cfg(test)]
+mod tests {
+    use super::recolor_coverage_table;
+
+    #[test]
+    fn recolor_thresholds() {
+        let input = concat!(
+            "<td class='column-entry-red'><pre>  50.00% (2/4)</pre></td>",
+            "<td class='column-entry-yellow'><pre>  51.23% (32/52)</pre></td>",
+            "<td class='column-entry-red'><pre>  80.00% (48/89)</pre></td>",
+            "<td class='column-entry-green'><pre>  81.00% (1/1)</pre></td>",
+            "<td class='column-entry-yellow'><pre>  90.00% (6/7)</pre></td>",
+            "<td class='column-entry-gray'><pre>- (0/0)</pre></td>",
+        );
+        let out = recolor_coverage_table(input);
+        assert!(out.contains("class='column-entry-red'><pre>  50.00%"));
+        assert!(out.contains("class='column-entry-yellow'><pre>  51.23%"));
+        assert!(out.contains("class='column-entry-yellow'><pre>  80.00%"));
+        assert!(out.contains("class='column-entry-green'><pre>  81.00%"));
+        assert!(out.contains("class='column-entry-green'><pre>  90.00%"));
+        assert!(out.contains("class='column-entry-gray'><pre>- (0/0)"));
+    }
+}
diff --git a/dev/run/src/bin/deploy-api-docs.rs b/dev/run/src/bin/deploy-api-docs.rs
new file mode 100644
index 0000000..961eb04
--- /dev/null
+++ b/dev/run/src/bin/deploy-api-docs.rs
@@ -0,0 +1,118 @@
+use std::path::Path;
+
+use arg_picker::{Picker, macros::arg};
+use tools::{println_cargo_style, run_cmd};
+
+const OUTPUT_DIR: &str = "docs/api-docs";
+
+fn main() {
+    let using_docsrs = Picker::from_args()
+        .pick_or_default(&arg![docsrs: bool])
+        .unwrap();
+
+    let repo_root = find_git_repo().expect("Failed to find git repository root");
+
+    // Read features from [package.metadata.docs.rs]
+    let features = tools::read_features().unwrap_or_else(|e| {
+        eprintln!("Error: {}", e);
+        std::process::exit(1);
+    });
+
+    let features_arg = features.join(",");
+
+    // Ensure output directory exists
+    let output_path = repo_root.join(OUTPUT_DIR);
+    std::fs::create_dir_all(&output_path).expect("Failed to create output directory");
+
+    // Build cargo doc command
+    let cmd = if using_docsrs {
+        format!(
+            "cargo +nightly rustdoc --features \"{}\" -p mingling --target-dir \"{}\" --color always -- --cfg docsrs",
+            features_arg,
+            output_path.join("target").to_string_lossy()
+        )
+    } else {
+        format!(
+            "cargo doc --no-deps --features \"{}\" -p mingling --target-dir \"{}\" --color always",
+            features_arg,
+            output_path.join("target").to_string_lossy()
+        )
+    };
+
+    println_cargo_style!("Features: {}", features_arg);
+    println_cargo_style!("Output: {}", output_path.display());
+
+    // Run cargo doc, then copy generated docs to output directory
+    println_cargo_style!("Building: docs (cargo doc --no-deps)");
+    run_cmd!(&cmd).unwrap_or_else(|code| {
+        eprintln!("Error: cargo doc failed with exit code {}", code);
+        std::process::exit(code);
+    });
+
+    // Copy generated docs from target/doc to OUTPUT_DIR (top level)
+    let doc_source = output_path.join("target").join("doc");
+    let doc_dest = &output_path;
+
+    if doc_source.exists() {
+        println_cargo_style!("Copying: docs to output directory");
+        // Remove old docs in destination (except target/)
+        if let Ok(entries) = std::fs::read_dir(doc_dest) {
+            for entry in entries.flatten() {
+                let path = entry.path();
+                if path.file_name().and_then(|n| n.to_str()) == Some("target") {
+                    continue;
+                }
+                if path.is_dir() {
+                    std::fs::remove_dir_all(&path).ok();
+                } else {
+                    std::fs::remove_file(&path).ok();
+                }
+            }
+        }
+        copy_dir_recursively(&doc_source, doc_dest).expect("Failed to copy documentation");
+    }
+
+    // Clean up the intermediate target directory to save space
+    std::fs::remove_dir_all(output_path.join("target")).ok();
+
+    println_cargo_style!("Done: API docs deployed to {}", output_path.display());
+}
+
+fn copy_dir_recursively(src: &Path, dst: &Path) -> std::io::Result<()> {
+    if !dst.exists() {
+        std::fs::create_dir_all(dst)?;
+    }
+
+    for entry in std::fs::read_dir(src)? {
+        let entry = entry?;
+        let file_type = entry.file_type()?;
+        let src_path = entry.path();
+        let file_name = src_path.file_name().expect("Failed to get file name");
+        let dst_path = dst.join(file_name);
+
+        if file_type.is_dir() {
+            copy_dir_recursively(&src_path, &dst_path)?;
+        } else {
+            std::fs::copy(&src_path, &dst_path)?;
+        }
+    }
+
+    Ok(())
+}
+
+fn find_git_repo() -> Option<std::path::PathBuf> {
+    let mut current_dir = std::env::current_dir().ok()?;
+
+    loop {
+        let git_dir = current_dir.join(".git");
+        if git_dir.exists() && git_dir.is_dir() {
+            return Some(current_dir);
+        }
+
+        if !current_dir.pop() {
+            break;
+        }
+    }
+
+    None
+}
diff --git a/dev/run/src/bin/display-dependency-order.rs b/dev/run/src/bin/display-dependency-order.rs
new file mode 100644
index 0000000..a31c67a
--- /dev/null
+++ b/dev/run/src/bin/display-dependency-order.rs
@@ -0,0 +1,12 @@
+use tools::{dependency_order::display_dependency_order, eprintln_cargo_style};
+
+fn main() {
+    let order = display_dependency_order();
+    if order.is_empty() {
+        eprintln_cargo_style!("could not find workspace root or mingling crates");
+        std::process::exit(1);
+    }
+    for path in order {
+        println!("{}", path.display());
+    }
+}
diff --git a/dev/run/src/bin/http-page-preview.ps1 b/dev/run/src/bin/http-page-preview.ps1
new file mode 100644
index 0000000..8cc3579
--- /dev/null
+++ b/dev/run/src/bin/http-page-preview.ps1
@@ -0,0 +1,3 @@
+$starting_dir = Get-Location
+python -m http.server 3000
+Set-Location $starting_dir
diff --git a/dev/run/src/bin/http-page-preview.sh b/dev/run/src/bin/http-page-preview.sh
new file mode 100755
index 0000000..bed4b1c
--- /dev/null
+++ b/dev/run/src/bin/http-page-preview.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+python3 -m http.server 3000
diff --git a/dev/run/src/bin/install-mling.ps1 b/dev/run/src/bin/install-mling.ps1
new file mode 100644
index 0000000..2b55a09
--- /dev/null
+++ b/dev/run/src/bin/install-mling.ps1
@@ -0,0 +1,10 @@
+$ErrorActionPreference = "Stop"
+
+cargo build --release --manifest-path mingling_cli/Cargo.toml
+
+New-Item -ItemType Directory -Force -Path .temp/mling/bin, .temp/mling/scripts | Out-Null
+
+Copy-Item .temp/target/release/mling.exe .temp/mling/bin/
+Copy-Item .temp/target/release/mingling-cli.exe .temp/mling/bin/
+Copy-Item .temp/target/mingling/mling_comp.ps1 .temp/mling/scripts/mling_comp.ps1
+Copy-Item mingling_cli/scripts/load_mling.ps1 .temp/mling/
diff --git a/dev/run/src/bin/install-mling.sh b/dev/run/src/bin/install-mling.sh
new file mode 100755
index 0000000..e8cfa18
--- /dev/null
+++ b/dev/run/src/bin/install-mling.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -e
+
+cargo build --release --manifest-path mingling_cli/Cargo.toml
+
+mkdir -p .temp/mling/bin .temp/mling/scripts
+
+cp .temp/target/release/mling .temp/mling/bin/
+cp .temp/target/release/mingling-cli .temp/mling/bin/
+
+for comp in zsh sh fish; do
+    cp ".temp/target/mingling/mling_comp.$comp" ".temp/mling/scripts/mling_comp.$comp"
+done
+cp mingling_cli/scripts/load_mling.zsh .temp/mling/
+cp mingling_cli/scripts/load_mling.sh .temp/mling/
+cp mingling_cli/scripts/load_mling.fish .temp/mling/
diff --git a/dev/run/src/bin/package-all.rs b/dev/run/src/bin/package-all.rs
new file mode 100644
index 0000000..ecdd133
--- /dev/null
+++ b/dev/run/src/bin/package-all.rs
@@ -0,0 +1,736 @@
+use std::collections::HashMap;
+use std::path::{Path, PathBuf};
+
+use flate2::read::GzDecoder;
+use serde::Deserialize;
+use tar::Archive;
+use toml::Table as TomlTable;
+use tools::{
+    dependency_order::find_workspace_root, eprintln_cargo_style, println_cargo_style,
+    run_cmd_capture_with_dir, wprintln_cargo_style,
+};
+
+/// A single member from `cargo metadata` output.
+#[derive(Deserialize, Debug)]
+struct MetadataPackage {
+    name: String,
+    version: String,
+    manifest_path: String,
+}
+
+/// The top-level metadata structure.
+#[derive(Deserialize, Debug)]
+struct Metadata {
+    #[allow(dead_code)]
+    workspace_root: String,
+    packages: Vec<MetadataPackage>,
+}
+
+fn main() {
+    // 1. Determine project root
+    let cwd = std::env::current_dir().expect("failed to get current working directory");
+    let workspace_root = find_workspace_root(&cwd).expect("not inside a Cargo workspace");
+    println_cargo_style!("Workspace: {}", workspace_root.display());
+
+    let pre_release_dir = workspace_root.join(".temp/pre-release");
+
+    // 2. Clean `.temp/pre-release/`
+    println_cargo_style!("Clean: .temp/pre-release/");
+    let _ = std::fs::remove_dir_all(&pre_release_dir);
+    std::fs::create_dir_all(&pre_release_dir).expect("failed to create .temp/pre-release/");
+
+    // 3. Run `cargo metadata` to get workspace members info
+    println_cargo_style!("Metadata: querying workspace members");
+    let metadata_json = run_cmd_capture_with_dir(
+        "cargo metadata --format-version 1 --no-deps",
+        &workspace_root,
+    )
+    .unwrap_or_else(|(code, _msg)| {
+        eprintln_cargo_style!(format!("cargo metadata failed (exit {code}):\n{{msg}}"));
+        std::process::exit(1);
+    });
+
+    let metadata: Metadata = serde_json::from_str(&metadata_json).unwrap_or_else(|e| {
+        eprintln_cargo_style!("failed to parse cargo metadata: {}", e);
+        std::process::exit(1);
+    });
+
+    // Filter workspace members: skip the root virtual manifest
+    let workspace_root_str = workspace_root.to_string_lossy().replace('\\', "/");
+    let members: Vec<&MetadataPackage> = metadata
+        .packages
+        .iter()
+        .filter(|p| {
+            let mp = p.manifest_path.replace('\\', "/");
+            mp.starts_with(&workspace_root_str)
+                && mp != format!("{}/Cargo.toml", workspace_root_str)
+        })
+        .collect();
+
+    if members.is_empty() {
+        eprintln_cargo_style!("No workspace members found!");
+        std::process::exit(1);
+    }
+
+    // Print member info
+    for m in &members {
+        println_cargo_style!("Member: {}@{}", m.name, m.version);
+    }
+
+    // Build version map: crate_name -> version
+    let mut version_map: HashMap<String, String> = HashMap::new();
+    for m in &members {
+        version_map.insert(m.name.clone(), m.version.clone());
+    }
+
+    // Collect unique member directories that need to be copied
+    let mut member_dirs: Vec<PathBuf> = Vec::new();
+    for m in &members {
+        let dir = Path::new(&m.manifest_path)
+            .parent()
+            .expect("manifest_path has no parent");
+        let canonical_dir = std::fs::canonicalize(dir).unwrap_or_else(|_| dir.to_path_buf());
+        let canonical_root =
+            std::fs::canonicalize(&workspace_root).unwrap_or_else(|_| workspace_root.to_path_buf());
+        let relative = canonical_dir
+            .strip_prefix(&canonical_root)
+            .map(|p| p.to_path_buf())
+            .unwrap_or_else(|_| PathBuf::from(dir.file_name().unwrap_or_default()));
+        if !member_dirs.contains(&relative) {
+            member_dirs.push(relative);
+        }
+    }
+
+    // 4. Copy files to the temp directory, preserving the workspace directory structure
+    println_cargo_style!("Copy: project structure to .temp/pre-release/");
+
+    copy_dir(
+        &workspace_root.join(".cargo"),
+        &pre_release_dir.join(".cargo"),
+    );
+
+    for dir in &member_dirs {
+        let src = workspace_root.join(dir);
+        let dst = pre_release_dir.join(dir);
+        copy_dir(&src, &dst);
+    }
+
+    copy_file(
+        &workspace_root.join("Cargo.toml"),
+        &pre_release_dir.join("Cargo.toml"),
+    );
+    copy_file(
+        &workspace_root.join("Cargo.lock"),
+        &pre_release_dir.join("Cargo.lock"),
+    );
+
+    // 5. Fully resolve ALL workspace inheritance in every member's Cargo.toml,
+    //    so each crate becomes monomorphic (no `workspace = true` references).
+    //    Then strip `[workspace.dependencies]` and `[workspace.package]` from the
+    //    root Cargo.toml, since they are no longer needed.
+    println_cargo_style!("Resolve: inline all workspace inheritance");
+
+    // Parse workspace config from the COPIED root Cargo.toml
+    let root_cargo_path = pre_release_dir.join("Cargo.toml");
+    let root_content = std::fs::read_to_string(&root_cargo_path)
+        .unwrap_or_else(|e| panic!("failed to read {}: {e}", root_cargo_path.display()));
+
+    let (ws_package, ws_deps) = parse_workspace_config(&root_content);
+
+    // Resolve each member's Cargo.toml
+    for dir in &member_dirs {
+        let member_cargo = pre_release_dir.join(dir).join("Cargo.toml");
+        if !member_cargo.exists() {
+            continue;
+        }
+        let member_content = std::fs::read_to_string(&member_cargo)
+            .unwrap_or_else(|e| panic!("failed to read {}: {e}", member_cargo.display()));
+        let resolved =
+            resolve_member_manifest(&member_content, dir, &ws_package, &ws_deps, &version_map);
+        std::fs::write(&member_cargo, &resolved)
+            .unwrap_or_else(|e| panic!("failed to write {}: {e}", member_cargo.display()));
+    }
+
+    // Strip [workspace.dependencies], [workspace.package], and root [package]
+    // from root Cargo.toml, making it a pure virtual manifest.
+    let stripped = strip_workspace_config(&root_content);
+    std::fs::write(&root_cargo_path, &stripped)
+        .unwrap_or_else(|e| panic!("failed to write {}: {e}", root_cargo_path.display()));
+
+    println_cargo_style!("Package: running cargo package --workspace --no-verify");
+
+    // 6. Run cargo package in the temp directory
+    let package_ok = run_cmd_capture_with_dir(
+        "cargo package --workspace --no-verify --color always",
+        &pre_release_dir,
+    );
+
+    match &package_ok {
+        Ok(out) => {
+            println!("{out}");
+        }
+        Err((code, msg)) => {
+            // Print output but don't fail yet
+            eprintln_cargo_style!(format!("cargo package exited with code {code}:"));
+            println!("{msg}");
+        }
+    }
+
+    // 7. Copy built packages back to .temp/target/package
+    let temp_package_dir = workspace_root.join(".temp/target/package");
+    std::fs::create_dir_all(&temp_package_dir)
+        .unwrap_or_else(|e| panic!("failed to create {}: {e}", temp_package_dir.display()));
+
+    // cargo package puts .crate files in target/package
+    let pre_release_target_package = pre_release_dir.join(".temp/target/package");
+    if pre_release_target_package.exists() {
+        println_cargo_style!("Copy: packages to .temp/target/package");
+        copy_dir_contents(&pre_release_target_package, &temp_package_dir);
+    } else {
+        wprintln_cargo_style!("No packages found in .temp/pre-release/.temp/target/package");
+    }
+
+    // 8. Export each crate as a standalone project from the .crate packages.
+    //    The .crate files contain the final publish-ready Cargo.toml with all
+    //    workspace/path deps already resolved by `cargo package`.
+    let release_dir = workspace_root.join(".temp/release");
+    println_cargo_style!("Export: standalone crates to .temp/release/");
+    let _ = std::fs::remove_dir_all(&release_dir);
+    std::fs::create_dir_all(&release_dir)
+        .unwrap_or_else(|e| panic!("failed to create {}: {e}", release_dir.display()));
+
+    for entry in std::fs::read_dir(&temp_package_dir).expect("failed to read target/package") {
+        let entry = entry.expect("failed to read entry");
+        let path = entry.path();
+        if path.extension().is_none_or(|e| e != "crate") {
+            continue;
+        }
+
+        // .crate files are gzipped tarballs. Extract to .temp/release/<name>/
+        // fname is like "mingling-0.3.0"
+        let fname = path.file_stem().unwrap().to_string_lossy().to_string();
+
+        // Derive crate directory name by stripping the version suffix
+        // mingling-0.3.0 -> mingling, arg-picker-0.1.0 -> arg-picker
+        let crate_dir_name = fname
+            .rfind('-')
+            .and_then(|dash| {
+                // Check if what follows looks like a semver
+                let ver_part = &fname[dash + 1..];
+                if ver_part.chars().next().is_some_and(|c| c.is_ascii_digit()) {
+                    Some(&fname[..dash])
+                } else {
+                    None
+                }
+            })
+            .unwrap_or(&fname)
+            .to_string();
+
+        let target_dir = release_dir.join(&crate_dir_name);
+        std::fs::create_dir_all(&target_dir)
+            .unwrap_or_else(|e| panic!("failed to create {}: {e}", target_dir.display()));
+
+        // Extract using flate2 + tar (cross-platform)
+        let file = match std::fs::File::open(&path) {
+            Ok(f) => f,
+            Err(e) => {
+                eprintln_cargo_style!("Failed to open {}: {e}", path.display());
+                continue;
+            }
+        };
+        let decoder = GzDecoder::new(file);
+        let mut archive = Archive::new(decoder);
+        if let Err(e) = archive.unpack(&target_dir) {
+            eprintln_cargo_style!("Failed to extract {}: {e}", fname);
+            continue;
+        }
+
+        // Move the contents from the inner dir up one level
+        // .crate contains a single top-level dir named after the package
+        let inner = target_dir.join(&fname);
+        if inner.exists() {
+            for inner_entry in std::fs::read_dir(&inner).expect("failed to read inner dir") {
+                let inner_entry = inner_entry.expect("failed to read entry");
+                let inner_path = inner_entry.path();
+                let dest = target_dir.join(inner_path.file_name().unwrap());
+                if dest.exists() {
+                    let _ = std::fs::remove_dir_all(&dest);
+                }
+                std::fs::rename(&inner_path, &dest).unwrap_or_else(|e| {
+                    panic!(
+                        "failed to rename {} -> {}: {e}",
+                        inner_path.display(),
+                        dest.display()
+                    )
+                });
+            }
+            let _ = std::fs::remove_dir_all(&inner);
+        }
+
+        // Clean up: remove .orig file (only the normalized Cargo.toml is needed)
+        let _ = std::fs::remove_file(target_dir.join("Cargo.toml.orig"));
+        // Also remove Cargo.lock — standalone crate doesn't need it for publish
+        let _ = std::fs::remove_file(target_dir.join("Cargo.lock"));
+
+        // Append an empty [workspace] section so each crate is a valid workspace root
+        let cargo_toml_path = target_dir.join("Cargo.toml");
+        if cargo_toml_path.exists() {
+            let mut cargo_content = std::fs::read_to_string(&cargo_toml_path)
+                .unwrap_or_else(|e| panic!("failed to read {}: {e}", cargo_toml_path.display()));
+            // Only append if there isn't already a [workspace] section
+            if !cargo_content.contains("\n[workspace]\n")
+                && !cargo_content.ends_with("\n[workspace]\n")
+            {
+                cargo_content.push_str("\n[workspace]\n");
+                std::fs::write(&cargo_toml_path, &cargo_content).unwrap_or_else(|e| {
+                    panic!("failed to write {}: {e}", cargo_toml_path.display())
+                });
+            }
+        }
+
+        println_cargo_style!("Export: {}", crate_dir_name);
+    }
+
+    println_cargo_style!("Done: .temp/release/ is ready");
+
+    // If package failed, report it
+    if package_ok.is_err() {
+        eprintln_cargo_style!("cargo package reported errors above");
+        std::process::exit(1);
+    }
+}
+
+/// Parse `[workspace.package]` and `[workspace.dependencies]` from the root Cargo.toml.
+/// Returns (package_fields, dep_values).
+fn parse_workspace_config(
+    content: &str,
+) -> (HashMap<String, String>, HashMap<String, toml::Value>) {
+    let table: TomlTable = content.parse().expect("failed to parse root Cargo.toml");
+
+    let mut package_fields = HashMap::new();
+    if let Some(workspace) = table.get("workspace").and_then(|w| w.as_table())
+        && let Some(pkg_table) = workspace.get("package").and_then(|p| p.as_table())
+    {
+        for (k, v) in pkg_table {
+            if let Some(s) = v.as_str() {
+                package_fields.insert(k.clone(), s.to_string());
+            }
+        }
+    }
+
+    let mut dep_values = HashMap::new();
+    if let Some(workspace) = table.get("workspace").and_then(|w| w.as_table())
+        && let Some(deps_table) = workspace.get("dependencies").and_then(|d| d.as_table())
+    {
+        for (k, v) in deps_table {
+            dep_values.insert(k.clone(), v.clone());
+        }
+    }
+
+    (package_fields, dep_values)
+}
+
+/// Serialize a `toml::Value` into Cargo-toml-compatible inline representation.
+fn toml_value_str(v: &toml::Value) -> String {
+    match v {
+        toml::Value::String(s) => format!("\"{}\"", s),
+        toml::Value::Table(t) => {
+            let items: Vec<String> = t
+                .iter()
+                .map(|(k, val)| format!("{} = {}", k, toml_value_str(val)))
+                .collect();
+            format!("{{ {} }}", items.join(", "))
+        }
+        toml::Value::Array(a) => {
+            let items: Vec<String> = a.iter().map(toml_value_str).collect();
+            format!("[{}]", items.join(", "))
+        }
+        toml::Value::Boolean(b) => b.to_string(),
+        toml::Value::Integer(i) => i.to_string(),
+        toml::Value::Float(f) => f.to_string(),
+        toml::Value::Datetime(dt) => format!("\"{}\"", dt),
+    }
+}
+
+/// Compute the relative path from `member_rel_dir` to `target_path`.
+/// Both are relative to workspace root.
+/// e.g. member_rel_dir="mingling", target_path="mingling_core" → "../mingling_core"
+fn make_path_relative_to_member(target_path: &str, member_rel_dir: &Path) -> String {
+    if member_rel_dir.as_os_str().is_empty() || member_rel_dir == Path::new(".") {
+        return target_path.to_string();
+    }
+    let depth = member_rel_dir.components().count();
+    let mut result = PathBuf::new();
+    for _ in 0..depth {
+        result.push("..");
+    }
+    result.push(target_path);
+    result.to_string_lossy().to_string()
+}
+
+/// Resolve a dependency definition from `[workspace.dependencies]` to an inline string.
+/// If the definition contains a path to a workspace member, add `version = "..."`
+/// and adjust the path to be relative to the member's directory.
+fn resolve_dep_def(
+    dep_name: &str,
+    dep_def: &toml::Value,
+    member_rel_dir: &Path,
+    version_map: &HashMap<String, String>,
+) -> String {
+    match dep_def {
+        toml::Value::String(ver) => {
+            format!("\"{}\"", ver)
+        }
+        toml::Value::Table(t) => {
+            let mut resolved = t.clone();
+            let has_path = t.contains_key("path");
+            let is_ws_member = version_map.contains_key(dep_name);
+
+            // Fix path to be relative to member's directory
+            if has_path && let Some(path_val) = t.get("path").and_then(|v| v.as_str()) {
+                let rel = make_path_relative_to_member(path_val, member_rel_dir);
+                resolved.insert("path".to_string(), toml::Value::String(rel));
+            }
+
+            // Add version for workspace member path deps
+            if has_path
+                && is_ws_member
+                && let Some(version) = version_map.get(dep_name)
+            {
+                resolved.insert("version".to_string(), toml::Value::String(version.clone()));
+            }
+
+            let items: Vec<String> = resolved
+                .iter()
+                .map(|(k, val)| format!("{} = {}", k, toml_value_str(val)))
+                .collect();
+            format!("{{ {} }}", items.join(", "))
+        }
+        _ => toml_value_str(dep_def),
+    }
+}
+
+/// Merge an inline `{ workspace = true, optional = true, ... }` with the workspace definition.
+/// Returns the full resolved dependency value string (without the leading `dep_name = `).
+fn merge_inline_dep(
+    inline_rest: &str,
+    dep_name: &str,
+    dep_def: &toml::Value,
+    member_rel_dir: &Path,
+    version_map: &HashMap<String, String>,
+) -> String {
+    // inline_rest is the part after `=`: `{ workspace = true, optional = true }`
+    let inner = inline_rest
+        .trim()
+        .strip_prefix('{')
+        .and_then(|s| s.strip_suffix('}'))
+        .unwrap_or("");
+
+    match dep_def {
+        toml::Value::String(ver) => {
+            // Workspace def is just a version string
+            // Collect extras: everything except `workspace = true`
+            let extras: Vec<&str> = inner
+                .split(',')
+                .map(|s| s.trim())
+                .filter(|s| !s.is_empty() && *s != "workspace = true")
+                .collect();
+
+            if extras.is_empty() {
+                format!("\"{}\"", ver)
+            } else {
+                // Serialize as inline table: version + extras
+                let mut parts = vec![format!("version = \"{}\"", ver)];
+                parts.extend(extras.iter().map(|s| s.to_string()));
+                format!("{{ {} }}", parts.join(", "))
+            }
+        }
+        toml::Value::Table(t) => {
+            // Start from workspace def
+            let mut merged = t.clone();
+
+            // Fix path to be relative to member's directory
+            if let Some(path_val) = t.get("path").and_then(|v| v.as_str()) {
+                let rel = make_path_relative_to_member(path_val, member_rel_dir);
+                merged.insert("path".to_string(), toml::Value::String(rel));
+            }
+
+            // If this dep is a workspace member with a path dep, add version
+            if t.contains_key("path")
+                && version_map.contains_key(dep_name)
+                && let Some(version) = version_map.get(dep_name)
+            {
+                merged.insert("version".to_string(), toml::Value::String(version.clone()));
+            }
+
+            // Apply extra fields from the inline
+            for piece in inner.split(',').map(|s| s.trim()) {
+                let piece = piece.trim();
+                if piece.is_empty() || piece == "workspace = true" {
+                    continue;
+                }
+                // Parse `key = value` pairs
+                if let Some((raw_key, raw_val)) = piece.split_once('=') {
+                    let k = raw_key.trim();
+                    let v = raw_val.trim();
+                    if k.is_empty() {
+                        continue;
+                    }
+                    // Try to infer the value type
+                    if v == "true" {
+                        merged.insert(k.to_string(), toml::Value::Boolean(true));
+                    } else if v == "false" {
+                        merged.insert(k.to_string(), toml::Value::Boolean(false));
+                    } else if v.starts_with('"') && v.ends_with('"') {
+                        merged.insert(
+                            k.to_string(),
+                            toml::Value::String(v[1..v.len() - 1].to_string()),
+                        );
+                    } else if v.starts_with('[') && v.ends_with(']') {
+                        // Simple array parsing: strings only
+                        let arr: Vec<toml::Value> = v[1..v.len() - 1]
+                            .split(',')
+                            .map(|s| {
+                                let s = s.trim().trim_matches('"');
+                                toml::Value::String(s.to_string())
+                            })
+                            .collect();
+                        merged.insert(k.to_string(), toml::Value::Array(arr));
+                    } else if let Ok(n) = v.parse::<i64>() {
+                        merged.insert(k.to_string(), toml::Value::Integer(n));
+                    } else if let Ok(f) = v.parse::<f64>() {
+                        merged.insert(k.to_string(), toml::Value::Float(f));
+                    } else {
+                        // Treat as string
+                        merged.insert(k.to_string(), toml::Value::String(v.to_string()));
+                    }
+                }
+            }
+
+            let items: Vec<String> = merged
+                .iter()
+                .map(|(k, val)| format!("{} = {}", k, toml_value_str(val)))
+                .collect();
+            format!("{{ {} }}", items.join(", "))
+        }
+        _ => toml_value_str(dep_def),
+    }
+}
+
+/// Resolve ALL workspace inheritance in a single member crate's Cargo.toml:
+///   - `version.workspace = true` → `version = "0.3.0"`
+///   - `dep.workspace = true` → inline the full definition from ws_deps
+///   - `dep = { workspace = true, ... }` → merge with ws_deps definition
+fn resolve_member_manifest(
+    content: &str,
+    member_rel_dir: &Path,
+    ws_package: &HashMap<String, String>,
+    ws_deps: &HashMap<String, toml::Value>,
+    version_map: &HashMap<String, String>,
+) -> String {
+    let mut result = String::new();
+    let mut in_package = false;
+    let mut in_section_with_deps = false;
+
+    for line in content.lines() {
+        let trimmed = line.trim();
+        let indent: String = line.chars().take_while(|c| c.is_whitespace()).collect();
+
+        // Track sections
+        if trimmed.starts_with('[') {
+            in_package = trimmed == "[package]";
+            in_section_with_deps = trimmed.starts_with("[dependencies")
+                || trimmed.starts_with("[build-dependencies")
+                || trimmed.starts_with("[dev-dependencies");
+            result.push_str(line);
+            result.push('\n');
+            continue;
+        }
+
+        // [package] section: resolve `field.workspace = true`
+        if in_package && trimmed.ends_with(".workspace = true") {
+            let key = trimmed.strip_suffix(".workspace = true").unwrap().trim();
+            if let Some(value) = ws_package.get(key) {
+                result.push_str(&format!("{indent}{key} = \"{value}\"\n"));
+                continue;
+            }
+            // Also check workspace.dependencies (for fields like `version.workspace`)
+            // when the member has its own version field inherited from workspace.package
+        }
+
+        // Dependency sections
+        if in_section_with_deps {
+            // Shorthand: `foo.workspace = true`
+            if trimmed.ends_with(".workspace = true") {
+                let key = trimmed.strip_suffix(".workspace = true").unwrap().trim();
+                if let Some(dep_def) = ws_deps.get(key) {
+                    let resolved = resolve_dep_def(key, dep_def, member_rel_dir, version_map);
+                    result.push_str(&format!("{indent}{key} = {resolved}\n"));
+                    continue;
+                }
+            }
+
+            // Inline: `foo = { workspace = true, optional = true, ... }`
+            if let Some(eq_pos) = trimmed.find("= {")
+                && trimmed.contains("workspace = true")
+            {
+                let dep_name = trimmed[..eq_pos].trim();
+                if let Some(dep_def) = ws_deps.get(dep_name) {
+                    let after_eq = trimmed[eq_pos + 1..].trim();
+                    let merged =
+                        merge_inline_dep(after_eq, dep_name, dep_def, member_rel_dir, version_map);
+                    result.push_str(&format!("{indent}{dep_name} = {merged}\n"));
+                    continue;
+                }
+            }
+        }
+
+        result.push_str(line);
+        result.push('\n');
+    }
+
+    result
+}
+
+/// Remove `[workspace.dependencies]`, `[workspace.package]`, and the root `[package]`
+/// section from root Cargo.toml, making it a pure virtual manifest.
+/// Keeps `[workspace]` with `members`, `resolver`, `exclude` so packaging still works.
+fn strip_workspace_config(content: &str) -> String {
+    let mut result = String::new();
+    let mut in_ws_deps = false;
+    let mut in_ws_package = false;
+    let mut in_root_package = false;
+
+    for line in content.lines() {
+        let trimmed = line.trim();
+
+        if trimmed == "[workspace.dependencies]" {
+            in_ws_deps = true;
+            continue;
+        }
+        if trimmed == "[workspace.package]" {
+            in_ws_package = true;
+            continue;
+        }
+        if trimmed == "[package]" && !in_ws_deps && !in_ws_package {
+            // Remove the root [package] section entirely (virtual manifest)
+            in_root_package = true;
+            continue;
+        }
+
+        if in_ws_deps {
+            if trimmed.starts_with('[') {
+                in_ws_deps = false;
+            } else {
+                continue;
+            }
+        }
+
+        if in_ws_package {
+            if trimmed.starts_with('[') {
+                in_ws_package = false;
+            } else {
+                continue;
+            }
+        }
+
+        if in_root_package {
+            if trimmed.starts_with('[') {
+                in_root_package = false;
+            } else {
+                continue;
+            }
+        }
+
+        result.push_str(line);
+        result.push('\n');
+    }
+
+    result
+}
+
+/// Recursively copy a directory.
+fn copy_dir(src: &Path, dst: &Path) {
+    copy_dir_filtered(src, dst, &|_: &Path| true)
+}
+
+/// Recursively copy a directory with a filter function.
+/// The filter receives the source path and returns `true` if the entry should be copied.
+fn copy_dir_filtered(src: &Path, dst: &Path, filter: &dyn Fn(&Path) -> bool) {
+    if !src.exists() {
+        return;
+    }
+    if !filter(src) {
+        return;
+    }
+    std::fs::create_dir_all(dst)
+        .unwrap_or_else(|e| panic!("failed to create {}: {e}", dst.display()));
+
+    for entry in std::fs::read_dir(src).expect("failed to read directory") {
+        let entry = entry.expect("failed to read entry");
+        let entry_type = entry.file_type().expect("failed to get file type");
+        let src_path = entry.path();
+        let dst_path = dst.join(entry.file_name());
+
+        if !filter(&src_path) {
+            continue;
+        }
+
+        if entry_type.is_dir() {
+            copy_dir_filtered(&src_path, &dst_path, filter);
+        } else if entry_type.is_file() || entry_type.is_symlink() {
+            copy_file(&src_path, &dst_path);
+        }
+    }
+}
+
+/// Copy a file, creating parent directories as needed.
+/// If src is a symlink, copies the target content (follow symlinks).
+fn copy_file(src: &Path, dst: &Path) {
+    if let Some(parent) = dst.parent() {
+        std::fs::create_dir_all(parent)
+            .unwrap_or_else(|e| panic!("failed to create {}: {e}", parent.display()));
+    }
+
+    let resolved = if src.is_symlink() {
+        let target = std::fs::read_link(src)
+            .unwrap_or_else(|e| panic!("failed to read symlink {}: {e}", src.display()));
+        if target.is_relative() {
+            src.parent().unwrap().join(target)
+        } else {
+            target
+        }
+    } else {
+        src.to_path_buf()
+    };
+
+    std::fs::copy(&resolved, dst).unwrap_or_else(|e| {
+        panic!(
+            "failed to copy {} -> {}: {e}",
+            resolved.display(),
+            dst.display()
+        )
+    });
+}
+
+/// Copy all files/directories from one directory into another.
+fn copy_dir_contents(src: &Path, dst: &Path) {
+    if !src.exists() {
+        return;
+    }
+    std::fs::create_dir_all(dst)
+        .unwrap_or_else(|e| panic!("failed to create {}: {e}", dst.display()));
+
+    for entry in std::fs::read_dir(src).expect("failed to read directory") {
+        let entry = entry.expect("failed to read entry");
+        let entry_type = entry.file_type().expect("failed to get file type");
+        let src_path = entry.path();
+        let dst_path = dst.join(entry.file_name());
+
+        if entry_type.is_dir() {
+            copy_dir(&src_path, &dst_path);
+        } else if entry_type.is_file() || entry_type.is_symlink() {
+            copy_file(&src_path, &dst_path);
+        }
+    }
+}
diff --git a/dev/run/src/bin/update-version.rs b/dev/run/src/bin/update-version.rs
new file mode 100644
index 0000000..679f419
--- /dev/null
+++ b/dev/run/src/bin/update-version.rs
@@ -0,0 +1,104 @@
+use std::io::Write as _;
+use std::path::Path;
+
+use serde::Deserialize;
+use tools::println_cargo_style;
+
+#[derive(Deserialize)]
+struct VersionFile {
+    file: String,
+    pattern: String,
+}
+
+#[derive(Deserialize)]
+struct Config {
+    #[serde(rename = "file")]
+    files: Vec<VersionFile>,
+}
+
+fn main() {
+    let args: Vec<String> = std::env::args().collect();
+
+    // Get new version
+    let new_ver = if args.len() > 1 {
+        args[1].clone()
+    } else {
+        print!("Update version to: ");
+        std::io::stdout().flush().unwrap();
+        let mut input = String::new();
+        std::io::stdin().read_line(&mut input).unwrap();
+        input.trim().to_string()
+    };
+
+    if new_ver.is_empty() {
+        eprintln!("Error: Version cannot be empty.");
+        std::process::exit(1);
+    }
+
+    // Read current version from root Cargo.toml's workspace.package.version
+    let root_cargo_path = "Cargo.toml";
+    let root_cargo_content =
+        std::fs::read_to_string(root_cargo_path).expect("Failed to read Cargo.toml");
+    let cargo_value: toml::Value = root_cargo_content
+        .parse()
+        .expect("Failed to parse Cargo.toml");
+
+    let current_ver = cargo_value["workspace"]["package"]["version"]
+        .as_str()
+        .expect("workspace.package.version not found in Cargo.toml")
+        .to_string();
+
+    if new_ver == current_ver {
+        println!("Version is already {}. Nothing to do.", current_ver);
+        return;
+    }
+
+    println_cargo_style!("Version: {} -> {}", current_ver, new_ver);
+
+    // Read version-files.toml
+    let config_path = Path::new("dev/configs").join("version-files.toml");
+    let config_str = std::fs::read_to_string(&config_path)
+        .expect("Failed to read dev/configs/version-files.toml");
+    let config: Config =
+        toml::from_str(&config_str).expect("Failed to parse dev/configs/version-files.toml");
+
+    let mut updated_count = 0;
+    let mut skipped_count = 0;
+
+    for vf in &config.files {
+        let file_path = &vf.file;
+        let old_pattern = vf.pattern.replace("{VER}", &current_ver);
+        let new_pattern = vf.pattern.replace("{VER}", &new_ver);
+
+        let content = match std::fs::read_to_string(file_path) {
+            Ok(c) => c,
+            Err(e) => {
+                eprintln!("Warning: Could not read {}: {}", file_path, e);
+                skipped_count += 1;
+                continue;
+            }
+        };
+
+        let new_content = content.replace(&old_pattern, &new_pattern);
+
+        if new_content == content {
+            eprintln!(
+                "Warning: Pattern '{}' not found in {}",
+                old_pattern, file_path
+            );
+            skipped_count += 1;
+            continue;
+        }
+
+        std::fs::write(file_path, &new_content)
+            .unwrap_or_else(|e| panic!("Failed to write {}: {}", file_path, e));
+        println_cargo_style!("Updated: {}", file_path);
+        updated_count += 1;
+    }
+
+    println_cargo_style!(
+        "Done: {} file(s) updated, {} file(s) skipped",
+        updated_count,
+        skipped_count
+    );
+}
diff --git a/dev/run/src/bin/windows-folder-hide.ps1 b/dev/run/src/bin/windows-folder-hide.ps1
new file mode 100644
index 0000000..ff53202
--- /dev/null
+++ b/dev/run/src/bin/windows-folder-hide.ps1
@@ -0,0 +1,115 @@
+$skipDirs = @('.git', '.temp', 'target', 'node_modules', '.pnpm')
+$selfPath = (Get-Item -LiteralPath $MyInvocation.MyCommand.Path).Directory.FullName
+
+function Test-InSkipDir {
+    param(
+        [object]$Item
+    )
+    $path = if ($Item -is [string]) {
+        $Item
+    } elseif ($Item.PSPath) {
+        $Item.PSPath -replace '^.*::', ''
+    } else {
+        $Item.FullName
+    }
+
+    $parts = $path.Split([System.IO.Path]::DirectorySeparatorChar)
+    for ($i = 0; $i -lt $parts.Length - 1; $i++) {
+        if ($parts[$i] -in $skipDirs) {
+            return $true
+        }
+    }
+    return $false
+}
+
+function Invoke-UnhideRecursive {
+    param([string]$Path)
+    Get-ChildItem -LiteralPath $Path -Force | ForEach-Object {
+        if ($_.PSIsContainer) {
+            if ($_.Name -in $skipDirs) {
+                if ($_.Attributes -band [System.IO.FileAttributes]::Hidden) {
+                    Write-Host "    -> unhiding skip directory (self only): `"$($_.FullName)`""
+                    $_.Attributes = $_.Attributes -bxor [System.IO.FileAttributes]::Hidden
+                }
+                return
+            }
+            Invoke-UnhideRecursive $_.FullName
+        } else {
+            if ($_.Attributes -band [System.IO.FileAttributes]::Hidden) {
+                Write-Host "    -> unhiding: `"$($_.FullName)`""
+                $_.Attributes = $_.Attributes -bxor [System.IO.FileAttributes]::Hidden
+            }
+        }
+    }
+}
+
+function Test-GitPathSkippable {
+    param([string]$GitPath)
+    $parts = $GitPath.Split(@('/', '\'))
+    for ($i = 0; $i -lt $parts.Length - 1; $i++) {
+        if ($parts[$i] -in $skipDirs) {
+            return $true
+        }
+    }
+    return $false
+}
+
+Write-Host "Step 1: Unhiding all files and directories (skipping $($skipDirs -join ', '))..."
+
+Invoke-UnhideRecursive -Path (Get-Location).Path
+
+Write-Host "Step 2: Hiding git-ignored items..."
+
+git ls-files --others --ignored --exclude-standard | Where-Object {
+    -not (Test-GitPathSkippable $_)
+} | ForEach-Object {
+    $itemPath = $_
+    Write-Host "... checking: `"$itemPath`""
+    $item = Get-Item $_ -Force -ErrorAction SilentlyContinue
+    if (-not $item) { return }
+
+    if ($item.FullName -eq $selfPath) { return }
+
+    if (Test-InSkipDir $item) {
+        Write-Host "    -> skipping (inside skip directory)"
+        return
+    }
+
+    if ($item.PSIsContainer) {
+        if (-not ($item.Attributes -band [System.IO.FileAttributes]::Hidden)) {
+            Write-Host "    -> hiding directory (non-recursive)"
+            $item.Attributes = $item.Attributes -bor [System.IO.FileAttributes]::Hidden
+        }
+    } else {
+        if (-not ($item.Attributes -band [System.IO.FileAttributes]::Hidden)) {
+            Write-Host "    -> hiding"
+            $item.Attributes = $item.Attributes -bor [System.IO.FileAttributes]::Hidden
+        }
+    }
+}
+
+Write-Host "Step 3: Hiding dot-prefixed items..."
+Get-ChildItem -Path . -Force -Directory | Where-Object { $_.Name -match '^\.' } | ForEach-Object {
+    Write-Host "... checking: `"$($_.FullName)`""
+    if (Test-InSkipDir $_) {
+        Write-Host "    -> skipping (inside skip directory)"
+        return
+    }
+    if (-not ($_.Attributes -band [System.IO.FileAttributes]::Hidden)) {
+        Write-Host "    -> hiding directory"
+        $_.Attributes = $_.Attributes -bor [System.IO.FileAttributes]::Hidden
+    }
+}
+
+Get-ChildItem -Path . -Force -File | Where-Object { $_.Name -match '^\.' } | ForEach-Object {
+    if ($_.FullName -eq $selfPath) { return }
+    Write-Host "... checking: `"$($_.FullName)`""
+    if (Test-InSkipDir $_) {
+        Write-Host "    -> skipping (inside skip directory)"
+        return
+    }
+    if (-not ($_.Attributes -band [System.IO.FileAttributes]::Hidden)) {
+        Write-Host "    -> hiding file"
+        $_.Attributes = $_.Attributes -bor [System.IO.FileAttributes]::Hidden
+    }
+}
diff --git a/dev/run/src/dependency_order.rs b/dev/run/src/dependency_order.rs
new file mode 100644
index 0000000..145bdbd
--- /dev/null
+++ b/dev/run/src/dependency_order.rs
@@ -0,0 +1,196 @@
+use std::collections::{HashMap, HashSet};
+use std::path::{Path, PathBuf};
+
+/// Parse Cargo.toml content and return dependency names that start with `prefix`.
+fn parse_mingling_deps(content: &str, prefix: &str) -> Vec<String> {
+    let value: toml::Value = match content.parse() {
+        Ok(v) => v,
+        Err(_) => return Vec::new(),
+    };
+
+    let mut names = Vec::new();
+
+    // Check [dependencies]
+    if let Some(deps) = value.get("dependencies").and_then(|d| d.as_table()) {
+        for key in deps.keys() {
+            if key.starts_with(prefix) {
+                names.push(key.clone());
+            }
+        }
+    }
+
+    // Check [build-dependencies]
+    if let Some(deps) = value.get("build-dependencies").and_then(|d| d.as_table()) {
+        for key in deps.keys() {
+            if key.starts_with(prefix) {
+                names.push(key.clone());
+            }
+        }
+    }
+
+    names
+}
+
+/// Read workspace members from the root Cargo.toml.
+fn get_workspace_members(workspace_root: &std::path::Path) -> Vec<String> {
+    let cargo_path = workspace_root.join("Cargo.toml");
+    let content = match std::fs::read_to_string(&cargo_path) {
+        Ok(c) => c,
+        Err(_) => return Vec::new(),
+    };
+
+    let value: toml::Value = match content.parse() {
+        Ok(v) => v,
+        Err(_) => return Vec::new(),
+    };
+
+    value
+        .get("workspace")
+        .and_then(|w| w.get("members"))
+        .and_then(|m| m.as_array())
+        .map(|arr| {
+            arr.iter()
+                .filter_map(|v| v.as_str().map(String::from))
+                .collect()
+        })
+        .unwrap_or_default()
+}
+
+/// Hierarchical topological sort (process layer by layer, sort siblings alphabetically).
+///
+/// `dep_map` maps each crate to the list of crates it depends on.
+/// Returns the dependency order (dependent crates come first, dependents come later),
+/// with crates at the same layer (which can be built in parallel) sorted alphabetically.
+fn topological_sort(
+    all_crates: &HashSet<String>,
+    dep_map: &HashMap<String, Vec<String>>,
+) -> Vec<String> {
+    // in_degree[crate] = number of remaining mingling_* dependencies not yet processed
+    let mut in_degree: HashMap<&str, usize> = HashMap::new();
+    // reverse[dependency] = list of crates that depend on it
+    let mut reverse: HashMap<&str, Vec<&str>> = HashMap::new();
+
+    for name in all_crates {
+        in_degree.entry(name.as_str()).or_insert(0);
+        reverse.entry(name.as_str()).or_default();
+    }
+
+    for (crate_name, deps) in dep_map {
+        for dep in deps {
+            if all_crates.contains(dep.as_str()) {
+                reverse
+                    .get_mut(dep.as_str())
+                    .unwrap()
+                    .push(crate_name.as_str());
+                *in_degree.get_mut(crate_name.as_str()).unwrap() += 1;
+            }
+        }
+    }
+
+    let mut result: Vec<String> = Vec::new();
+
+    // Process layer by layer: all crates with in_degree == 0 in one batch form a layer
+    loop {
+        let mut current: Vec<&str> = all_crates
+            .iter()
+            .filter(|n| in_degree.get(n.as_str()).copied().unwrap_or(0) == 0)
+            .filter(|n| !result.iter().any(|r| r.as_str() == n.as_str()))
+            .map(|s| s.as_str())
+            .collect();
+
+        if current.is_empty() {
+            break;
+        }
+
+        current.sort();
+        result.extend(current.iter().map(|s| s.to_string()));
+
+        for &node in &current {
+            if let Some(dependents) = reverse.get(node) {
+                for &dependent in dependents {
+                    if let Some(degree) = in_degree.get_mut(dependent) {
+                        *degree -= 1;
+                    }
+                }
+            }
+        }
+    }
+
+    result
+}
+
+/// Strip the `\\?\` prefix that `std::fs::canonicalize` may add on Windows.
+fn strip_verbatim_prefix(p: &Path) -> PathBuf {
+    let s = p.to_string_lossy();
+    let s_ref: &str = &s;
+    if let Some(rest) = s_ref.strip_prefix("\\\\?\\") {
+        PathBuf::from(rest)
+    } else {
+        p.to_path_buf()
+    }
+}
+
+/// Find the workspace root by looking for a Cargo.toml with `[workspace]` members.
+/// Starts from `start` and walks up the directory tree.
+pub fn find_workspace_root(start: &std::path::Path) -> Option<PathBuf> {
+    let mut current = Some(strip_verbatim_prefix(
+        &std::fs::canonicalize(start).unwrap_or_else(|_| start.to_path_buf()),
+    ));
+    while let Some(dir) = current {
+        let members = get_workspace_members(&dir);
+        if !members.is_empty() {
+            return Some(dir);
+        }
+        current = dir.parent().map(|p| p.to_path_buf());
+    }
+    None
+}
+
+/// Output all crate paths in dependency order
+#[allow(unused)]
+pub fn display_dependency_order() -> Vec<PathBuf> {
+    let cwd = std::env::current_dir().unwrap_or_else(|_| PathBuf::from("."));
+
+    let workspace_root = match find_workspace_root(&cwd) {
+        Some(root) => root,
+        None => return Vec::new(),
+    };
+
+    // Read workspace members from root Cargo.toml
+    let members = get_workspace_members(&workspace_root);
+
+    // Filter to crates starting with "mingling" or "arg"
+    let mingling_crates: HashSet<String> = members
+        .into_iter()
+        .filter(|m| m.starts_with("mingling") || m.starts_with("arg"))
+        .collect();
+
+    if mingling_crates.is_empty() {
+        return Vec::new();
+    }
+
+    // Build dependency graph
+    let mut dep_map: HashMap<String, Vec<String>> = HashMap::new();
+
+    for crate_name in &mingling_crates {
+        let cargo_path = workspace_root.join(crate_name).join("Cargo.toml");
+        let content = match std::fs::read_to_string(&cargo_path) {
+            Ok(c) => c,
+            Err(_) => {
+                dep_map.insert(crate_name.clone(), Vec::new());
+                continue;
+            }
+        };
+        let deps = parse_mingling_deps(&content, "mingling");
+        // Only keep deps that are actually in our set
+        let filtered: Vec<String> = deps
+            .into_iter()
+            .filter(|d| mingling_crates.contains(d.as_str()))
+            .collect();
+        dep_map.insert(crate_name.clone(), filtered);
+    }
+
+    let sorted = topological_sort(&mingling_crates, &dep_map);
+
+    sorted.into_iter().map(PathBuf::from).collect()
+}
diff --git a/dev/run/src/lib.rs b/dev/run/src/lib.rs
new file mode 100644
index 0000000..b17a61f
--- /dev/null
+++ b/dev/run/src/lib.rs
@@ -0,0 +1,459 @@
+pub mod dependency_order;
+pub mod verify;
+
+use colored::Colorize;
+
+use std::io::IsTerminal as _;
+
+#[macro_export]
+macro_rules! run_cmd {
+    ($fmt:literal, $($arg:tt)*) => {
+        $crate::run_cmd(format!($fmt, $($arg)*))
+    };
+    ($cmd:expr) => {
+        $crate::run_cmd($cmd)
+    };
+}
+
+/// Run a shell command and capture its combined stdout+stderr output.
+/// Returns `Ok(output)` on success, `Err((exit_code, stderr))` on failure.
+#[macro_export]
+macro_rules! run_cmd_and_capture_stderr {
+    ($fmt:literal, $($arg:tt)*) => {
+        $crate::run_cmd_capture(format!($fmt, $($arg)*))
+    };
+    ($cmd:expr) => {
+        $crate::run_cmd_capture($cmd)
+    };
+}
+
+#[macro_export]
+macro_rules! println_cargo_style {
+    ($fmt:literal, $($arg:tt)*) => {
+        $crate::println_cargo_style(format!($fmt, $($arg)*))
+    };
+    ($cmd:expr) => {
+        $crate::println_cargo_style($cmd)
+    };
+}
+
+#[macro_export]
+macro_rules! eprintln_cargo_style {
+    ($fmt:literal, $($arg:tt)*) => {
+        $crate::eprintln_cargo_style(format!($fmt, $($arg)*))
+    };
+    ($cmd:expr) => {
+        $crate::eprintln_cargo_style($cmd)
+    };
+}
+
+#[macro_export]
+macro_rules! wprintln_cargo_style {
+    ($fmt:literal, $($arg:tt)*) => {
+        $crate::wprintln_cargo_style(format!($fmt, $($arg)*))
+    };
+    ($cmd:expr) => {
+        $crate::wprintln_cargo_style($cmd)
+    };
+}
+
+/// Print a message in cargo style format, with bold green prefix.
+///
+/// # Panics
+///
+/// Panics if the prefix (text before the first `:`) exceeds 12 characters.
+pub fn println_cargo_style(str: impl Into<String>) {
+    let s = str.into();
+    let (prefix, content) = if let Some(pos) = s.find(':') {
+        (
+            s[..pos].trim().to_string(),
+            s[pos + 1..].trim_start().to_string(),
+        )
+    } else {
+        (String::new(), s.trim().to_string())
+    };
+
+    assert!(
+        prefix.len() <= 12,
+        "prefix length exceeds 12: '{}' has length {}",
+        prefix,
+        prefix.len()
+    );
+
+    let padding = " ".repeat(12 - prefix.len());
+
+    println!(
+        "{}{} {}",
+        padding,
+        prefix.bold().bright_green(),
+        content.trim()
+    );
+}
+
+pub fn eprintln_cargo_style(str: impl Into<String>) {
+    println!("{}: {}", "error".bold().bright_red(), str.into());
+}
+
+/// Print a message in cargo style format, with bold yellow prefix (warning style).
+///
+/// # Panics
+///
+/// Panics if the prefix (text before the first `:`) exceeds 12 characters.
+pub fn wprintln_cargo_style(str: impl Into<String>) {
+    let s = str.into();
+    let (prefix, content) = if let Some(pos) = s.find(':') {
+        (
+            s[..pos].trim().to_string(),
+            s[pos + 1..].trim_start().to_string(),
+        )
+    } else {
+        (String::new(), s.trim().to_string())
+    };
+
+    assert!(
+        prefix.len() <= 12,
+        "prefix length exceeds 12: '{}' has length {}",
+        prefix,
+        prefix.len()
+    );
+
+    let padding = " ".repeat(12 - prefix.len());
+
+    println!(
+        "{}{} {}",
+        padding,
+        prefix.bold().bright_yellow(),
+        content.trim()
+    );
+}
+
+/// Run a shell command in the current directory and return its exit status.
+///
+/// # Panics
+///
+/// Panics if the shell command cannot be spawned (e.g. the shell binary is not found).
+///
+/// # Errors
+///
+/// Returns `Err` with the exit code if the command finishes with a non-zero exit code.
+pub fn run_cmd(cmd: impl Into<String>) -> Result<(), i32> {
+    let cwd = std::env::current_dir().unwrap_or_else(|_| std::path::PathBuf::from("."));
+    run_cmd_with_dir(cmd.into(), &cwd)
+}
+
+/// Run a shell command in the specified directory and return its exit status.
+///
+/// # Panics
+///
+/// Panics if the shell command cannot be spawned (e.g. the shell binary is not found).
+///
+/// # Errors
+///
+/// Returns `Err` with the exit code if the command finishes with a non-zero exit code.
+pub fn run_cmd_with_dir(cmd: impl Into<String>, dir: &std::path::Path) -> Result<(), i32> {
+    let shell = if cfg!(target_os = "windows") {
+        "powershell"
+    } else {
+        "sh"
+    };
+    let status = std::process::Command::new(shell)
+        .arg("-c")
+        .arg(cmd.into())
+        .current_dir(dir)
+        .status()
+        .expect("failed to execute command");
+
+    let exit_code = status.code().unwrap_or(1);
+    if exit_code == 0 {
+        Ok(())
+    } else {
+        Err(exit_code)
+    }
+}
+
+/// Run a shell command and capture its combined stdout+stderr output.
+///
+/// On success returns `Ok(combined_output)`. On failure returns `Err((exit_code, stderr))`.
+/// Stderr falls back to stdout if stderr is empty.
+pub fn run_cmd_capture(cmd: impl Into<String>) -> Result<String, (i32, String)> {
+    let cwd = std::env::current_dir().unwrap_or_else(|_| std::path::PathBuf::from("."));
+    run_cmd_capture_with_dir(cmd.into(), &cwd)
+}
+
+/// Run a shell command in the specified directory and capture its combined stdout+stderr output.
+///
+/// On success returns `Ok(combined_output)`. On failure returns `Err((exit_code, stderr))`.
+/// Stderr falls back to stdout if stderr is empty.
+pub fn run_cmd_capture_with_dir(
+    cmd: impl Into<String>,
+    dir: &std::path::Path,
+) -> Result<String, (i32, String)> {
+    let shell = if cfg!(target_os = "windows") {
+        "powershell"
+    } else {
+        "sh"
+    };
+    let output = std::process::Command::new(shell)
+        .arg("-c")
+        .arg(cmd.into())
+        .current_dir(dir)
+        .output()
+        .expect("failed to execute command");
+
+    let exit_code = output.status.code().unwrap_or(1);
+    let stderr = String::from_utf8_lossy(&output.stderr).to_string();
+    let stdout = String::from_utf8_lossy(&output.stdout).to_string();
+    // Keep both streams so a failure is never hidden: when stderr carries
+    // warnings, the real failure details (e.g. the failing test name and
+    // assertion diff) usually live on stdout and must not be dropped.
+    let combined = match (stdout.trim().is_empty(), stderr.trim().is_empty()) {
+        (false, false) => format!("{stdout}\n{stderr}"),
+        (false, true) => stdout,
+        (true, false) => stderr,
+        (true, true) => stdout,
+    };
+
+    if exit_code == 0 {
+        Ok(combined)
+    } else {
+        Err((exit_code, combined))
+    }
+}
+
+/// Extract a crate-style name from a `Cargo.toml` path.
+///
+/// Examples:
+/// - `mingling_core/Cargo.toml` → `mingling_core`
+/// - `.` → `(root)`
+pub fn crate_name_from(path: &std::path::Path) -> String {
+    path.parent()
+        .and_then(|p| p.file_name())
+        .and_then(|n| n.to_str())
+        .unwrap_or("(root)")
+        .to_string()
+}
+
+/// Run a list of `(label_for_errors, crate_name_for_bar, shell_command)` tuples
+/// in parallel with a progress bar.
+///
+/// - Success: silent, the bar tracks progress:
+///   `  Building [============================] 32/32: mingling_core`
+/// - Failure: `pb.println()` prints the error immediately above the bar.
+pub fn run_parallel(phase: &str, tasks: Vec<(String, String, String)>) -> Result<(), i32> {
+    let n = tasks.len();
+    if n == 0 {
+        return Ok(());
+    }
+
+    // Cargo-style prefix: right-aligned to 12 chars, bold bright cyan
+    let padding = " ".repeat(12 - phase.len());
+    let styled_prefix = format!("{}{}", padding, phase.bold().bright_cyan());
+
+    let pb = indicatif::ProgressBar::new(n as u64);
+    pb.set_style(
+        indicatif::ProgressStyle::default_bar()
+            .template(&format!(
+                "{} [{{bar:28}}] {{pos}}/{{len}}: {{msg}}",
+                styled_prefix
+            ))
+            .unwrap()
+            .progress_chars("=> "),
+    );
+    pb.set_position(0);
+
+    // Pre-extract labels for error messages
+    let labels: Vec<String> = tasks.iter().map(|(l, _, _)| l.clone()).collect();
+
+    let (tx, rx) = std::sync::mpsc::channel::<(usize, String, Result<String, (i32, String)>)>();
+
+    for (i, (_label, crate_name, cmd)) in tasks.into_iter().enumerate() {
+        let tx = tx.clone();
+        std::thread::spawn(move || {
+            let result = run_cmd_capture(&cmd);
+            let _ = tx.send((i, crate_name, result));
+        });
+    }
+    drop(tx);
+
+    let mut first_exit_code = 0;
+
+    while let Ok((i, crate_name, result)) = rx.recv() {
+        pb.inc(1);
+        pb.set_message(crate_name);
+
+        if let Err((code, output)) = result {
+            if first_exit_code == 0 {
+                first_exit_code = code;
+            }
+            let msg = format!(
+                "{}: {} failed (exit code {})",
+                "error".bright_red().bold(),
+                labels[i],
+                code,
+            );
+            let mut lines = Vec::new();
+            if !output.is_empty() {
+                lines.extend(output.lines().map(|l| format!("  {l}")));
+            }
+            if std::io::stdout().is_terminal() {
+                // On a TTY, render errors through the progress bar so they
+                // appear above it.
+                pb.println(&msg);
+                for line in &lines {
+                    pb.println(line);
+                }
+            } else {
+                // On a non-TTY (CI, piped output), `ProgressBar::println` can
+                // be swallowed, hiding the failure. Emit to plain stdout so the
+                // failure is always visible.
+                println!("{msg}");
+                for line in &lines {
+                    println!("{line}");
+                }
+            }
+        }
+    }
+
+    pb.finish_and_clear();
+
+    if first_exit_code != 0 {
+        Err(first_exit_code)
+    } else {
+        Ok(())
+    }
+}
+
+/// Run a single shell command with a progress bar, capturing its output.
+///
+/// - Success: bar clears silently.
+/// - Failure: error is printed above the bar, then the bar clears.
+pub fn run_cmd_with_progress(phase: &str, label: &str, cmd: String) -> Result<(), i32> {
+    let padding = " ".repeat(12 - phase.len());
+    let styled_prefix = format!("{}{}", padding, phase.bold().bright_cyan());
+
+    let pb = indicatif::ProgressBar::new(1);
+    pb.set_style(
+        indicatif::ProgressStyle::default_bar()
+            .template(&format!(
+                "{} [{{bar:28}}] {{pos}}/{{len}}: {{msg}}",
+                styled_prefix
+            ))
+            .unwrap()
+            .progress_chars("=> "),
+    );
+    pb.set_message(label.to_owned());
+
+    let result = run_cmd_capture(&cmd);
+    pb.inc(1);
+    pb.finish_and_clear();
+
+    match result {
+        Ok(_) => Ok(()),
+        Err((code, output)) => {
+            eprintln_cargo_style(format!("{} failed (exit code {})", label, code));
+            if !output.is_empty() {
+                println!("{}", output.trim_end());
+            }
+            Err(code)
+        }
+    }
+}
+
+/// Read `[package.metadata.docs.rs].features` from `mingling/Cargo.toml`.
+///
+/// Finds the git repository root, reads `mingling/Cargo.toml`, parses it as TOML,
+/// and extracts the feature list under `[package.metadata.docs.rs].features`.
+///
+/// # Errors
+///
+/// Returns `std::io::Error` if:
+/// - The git repository root cannot be found.
+/// - The manifest file cannot be read.
+/// - The TOML cannot be parsed.
+/// - The `[package.metadata.docs.rs].features` key is missing or empty.
+pub fn read_features() -> Result<Vec<String>, std::io::Error> {
+    // Find git repo root
+    let mut current_dir = std::env::current_dir()?;
+    let repo_root = loop {
+        let git_dir = current_dir.join(".git");
+        if git_dir.exists() && git_dir.is_dir() {
+            break Some(current_dir);
+        }
+        if !current_dir.pop() {
+            break None;
+        }
+    };
+    let repo_root = repo_root.ok_or_else(|| {
+        std::io::Error::new(
+            std::io::ErrorKind::NotFound,
+            "Failed to find git repository root",
+        )
+    })?;
+
+    let manifest_path = repo_root.join("mingling/Cargo.toml");
+    if !manifest_path.exists() {
+        return Err(std::io::Error::new(
+            std::io::ErrorKind::NotFound,
+            format!("Manifest not found at {}", manifest_path.display()),
+        ));
+    }
+
+    let manifest_content = std::fs::read_to_string(&manifest_path)?;
+    let cargo_toml: toml::Value = manifest_content.parse().map_err(|e| {
+        std::io::Error::new(
+            std::io::ErrorKind::InvalidData,
+            format!("Failed to parse Cargo.toml: {}", e),
+        )
+    })?;
+
+    let doc_features = cargo_toml
+        .get("package")
+        .and_then(|p| p.get("metadata"))
+        .and_then(|m| m.get("docs"))
+        .and_then(|d| d.get("rs"))
+        .and_then(|rs| rs.get("features"))
+        .and_then(|f| f.as_array())
+        .ok_or_else(|| {
+            std::io::Error::new(
+                std::io::ErrorKind::NotFound,
+                "[package.metadata.docs.rs] or its 'features' key not found in mingling/Cargo.toml",
+            )
+        })?;
+
+    let features: Vec<String> = doc_features
+        .iter()
+        .filter_map(|v| v.as_str().map(String::from))
+        .collect();
+
+    if features.is_empty() {
+        return Err(std::io::Error::new(
+            std::io::ErrorKind::InvalidData,
+            "No features defined in [package.metadata.docs.rs]",
+        ));
+    }
+
+    Ok(features)
+}
+
+#[must_use]
+pub fn cargo_tomls() -> Vec<std::path::PathBuf> {
+    let mut cargo_tomls = Vec::new();
+    let mut dirs = vec![std::path::PathBuf::from(".")];
+    while let Some(dir) = dirs.pop() {
+        if let Ok(entries) = std::fs::read_dir(&dir) {
+            for entry in entries.flatten() {
+                let path = entry.path();
+                if path.is_dir() {
+                    // Skip the .run directory
+                    if path.file_name().and_then(|n| n.to_str()) == Some(".run") {
+                        continue;
+                    }
+                    dirs.push(path);
+                } else if path.file_name().and_then(|n| n.to_str()) == Some("Cargo.toml") {
+                    cargo_tomls.push(path);
+                }
+            }
+        }
+    }
+    cargo_tomls
+}
diff --git a/dev/run/src/verify.rs b/dev/run/src/verify.rs
new file mode 100644
index 0000000..b79bb73
--- /dev/null
+++ b/dev/run/src/verify.rs
@@ -0,0 +1,506 @@
+use std::path::Path;
+
+use crate::println_cargo_style;
+
+/// Represents a parsed code block from a markdown file
+#[derive(Debug, Clone)]
+pub struct CodeBlock {
+    /// Source file path (for reporting)
+    pub source_file: String,
+    /// The line number in source file where this block starts
+    pub line: usize,
+    /// The raw Rust source code
+    pub code: String,
+    /// Feature flags extracted from `// Features: [...]` comment
+    pub features: Vec<String>,
+    /// Whether the block had an explicit `// Features:` header
+    pub has_features_header: bool,
+    /// Whether the block has `// NOT VERIFIED` to opt out of testing
+    pub not_verified: bool,
+    /// External dependencies extracted from `// Dependencies:` comments
+    pub external_deps: Vec<(String, String)>,
+    /// Whether this block has a `fn main` entry point
+    pub has_main: bool,
+    /// Whether this block has `gen_program!()` call
+    pub has_gen_program: bool,
+    /// Whether this block has `// BUILD TIME` annotation (write to build.rs, not main.rs)
+    pub is_build_time: bool,
+}
+
+/// Parse all ```rust code blocks from markdown content
+pub fn parse_code_blocks(content: &str, source_file: &str) -> Vec<CodeBlock> {
+    let mut blocks = Vec::new();
+    let lines: Vec<&str> = content.lines().collect();
+    let mut i = 0;
+
+    while i < lines.len() {
+        if lines[i].trim() == "```rust" {
+            if let Some(block) = parse_single_block(&lines, i, source_file) {
+                blocks.push(block);
+            }
+            i += 1;
+            while i < lines.len() && lines[i].trim() != "```" {
+                i += 1;
+            }
+        }
+        i += 1;
+    }
+
+    blocks
+}
+
+/// Parse a single code block starting at the ```rust line
+fn parse_single_block(lines: &[&str], start: usize, source_file: &str) -> Option<CodeBlock> {
+    let line_num = start + 1; // 1-based line number
+
+    let mut code_lines: Vec<String> = Vec::new();
+    let mut features: Vec<String> = Vec::new();
+    let mut has_features_header = false;
+    let mut not_verified = false;
+    let mut external_deps: Vec<(String, String)> = Vec::new();
+    let mut has_main = false;
+    let mut has_gen_program = false;
+    let mut is_build_time = false;
+
+    let mut idx = start + 1;
+    let mut in_header = true;
+
+    while idx < lines.len() {
+        let raw_line = lines[idx];
+        let trimmed = raw_line.trim();
+
+        if trimmed == "```" {
+            break;
+        }
+
+        // @@@ lines: strip the prefix and treat as regular Rust code
+        // These lines are hidden in the rendered docs (filtered by a docsify plugin)
+        // but must still compile.
+        if let Some(stripped) = trimmed.strip_prefix("@@@") {
+            in_header = false;
+            // Strip @@@ and optionally one following space
+            let code = stripped.trim_start();
+            if code.contains("fn main") {
+                has_main = true;
+            }
+            if code.contains("gen_program!") {
+                has_gen_program = true;
+            }
+            code_lines.push(code.to_string());
+            idx += 1;
+            continue;
+        }
+
+        // Parse header comments
+        // Check for NOT VERIFIED marker
+        if in_header && trimmed == "// NOT VERIFIED" {
+            not_verified = true;
+            idx += 1;
+            continue;
+        }
+
+        if in_header && trimmed == "// BUILD TIME" {
+            is_build_time = true;
+            idx += 1;
+            continue;
+        }
+
+        if in_header && trimmed.starts_with("// ") {
+            if trimmed.starts_with("// Features:") {
+                has_features_header = true;
+                let feat_str = trimmed.trim_start_matches("// Features:").trim();
+                if feat_str.starts_with('[') && feat_str.ends_with(']') {
+                    let inner = &feat_str[1..feat_str.len() - 1];
+                    if !inner.is_empty() {
+                        features = inner
+                            .split(',')
+                            .map(|s| s.trim().trim_matches('"').to_string())
+                            .filter(|s| !s.is_empty())
+                            .collect();
+                    }
+                }
+                idx += 1;
+                continue;
+            }
+            if trimmed == "// Dependencies:" {
+                idx += 1;
+                // Collect subsequent `// crate = "version"` lines
+                while idx < lines.len() {
+                    let next = lines[idx].trim();
+                    if next == "```" {
+                        break;
+                    }
+                    if next.starts_with("// ") {
+                        let dep_line = next.trim_start_matches("// ").trim();
+                        if let Some((name, ver)) = dep_line.split_once(" = ") {
+                            external_deps.push((
+                                name.trim().to_string(),
+                                ver.trim().trim_matches('"').to_string(),
+                            ));
+                        }
+                        idx += 1;
+                    } else {
+                        break;
+                    }
+                }
+                continue;
+            }
+        }
+
+        in_header = false;
+
+        if raw_line.contains("fn main") {
+            has_main = true;
+        }
+        if raw_line.contains("gen_program!") {
+            has_gen_program = true;
+        }
+
+        code_lines.push(raw_line.to_string());
+        idx += 1;
+    }
+
+    if code_lines.is_empty() {
+        return None;
+    }
+
+    Some(CodeBlock {
+        source_file: source_file.to_string(),
+        line: line_num,
+        code: code_lines.join("\n"),
+        features,
+        has_features_header,
+        not_verified,
+        external_deps,
+        has_main,
+        has_gen_program,
+        is_build_time,
+    })
+}
+
+/// Generate a Cargo.toml for a block
+///
+/// `manifest_path` is the full path to the Cargo.toml file being written; it is used to
+/// compute the relative path to the `mingling` crate.
+pub fn generate_cargo_toml(block: &CodeBlock, package_name: &str, manifest_path: &Path) -> String {
+    let features_str = if !block.features.is_empty() {
+        let feats: Vec<String> = block.features.iter().map(|f| format!("\"{f}\"")).collect();
+        format!("features = [{}]", feats.join(", "))
+    } else {
+        String::new()
+    };
+
+    let mut extra_deps = String::new();
+    for (name, version) in &block.external_deps {
+        if !version.starts_with('{') {
+            if name == "serde" || name == "clap" {
+                extra_deps.push_str(&format!(
+                    "{name} = {{ version = \"{version}\", features = [\"derive\"] }}\n"
+                ));
+            } else {
+                extra_deps.push_str(&format!("{name} = \"{version}\"\n"));
+            }
+        } else {
+            extra_deps.push_str(&format!("{name} = {version}\n"));
+        }
+    }
+
+    let mingling_path = find_mingling_relative_path(manifest_path);
+
+    let deps_section = if features_str.is_empty() {
+        format!("[dependencies]\nmingling = {{ path = \"{mingling_path}\" }}\n{extra_deps}",)
+    } else {
+        format!(
+            "[dependencies]\nmingling = {{ path = \"{mingling_path}\", {features_str} }}\n{extra_deps}",
+        )
+    };
+
+    // Build-time blocks: mirror the declared features into [build-dependencies]
+    // so that build.rs can use the same feature set as the crate itself.
+    let build_deps_section = if block.is_build_time {
+        let feats_str: Vec<String> = block.features.iter().map(|f| format!("\"{f}\"")).collect();
+        let build_feats = if feats_str.is_empty() {
+            String::new()
+        } else {
+            format!("features = [{}]", feats_str.join(", "))
+        };
+        format!(
+            "\n[build-dependencies]\nmingling = {{ path = \"{mingling_path}\", {build_feats} }}\n"
+        )
+    } else {
+        String::new()
+    };
+
+    format!(
+        r#"[package]
+	name = "{package_name}"
+	version = "0.0.0"
+	edition = "2024"
+
+{deps_section}{build_deps_section}
+[workspace]
+"#
+    )
+}
+
+/// Compute the relative path from a Cargo.toml's parent directory to the `mingling` crate.
+///
+/// The process current directory is expected to be the project root (where `mingling/` lives).
+/// Returns a forward-slash path safe for embedding in TOML strings.
+fn find_mingling_relative_path(manifest_path: &Path) -> String {
+    let manifest_dir = manifest_path
+        .parent()
+        .expect("manifest_path has no parent directory");
+    let cwd = std::env::current_dir().expect("failed to get current directory");
+
+    // Strip cwd prefix to get the relative components of the manifest directory
+    let relative_to_root = manifest_dir.strip_prefix(&cwd).unwrap_or(manifest_dir);
+    let depth = relative_to_root.components().count();
+
+    let mut result = String::new();
+    for _ in 0..depth {
+        result.push_str("../");
+    }
+    result.push_str("mingling");
+    result
+}
+
+/// Generate main.rs for a block
+///
+/// Automatically prepends `use mingling::prelude::*;` if the block doesn't already have it.
+pub fn generate_main_rs(block: &CodeBlock) -> String {
+    let mut output = String::from("#![allow(dead_code)]\n#![allow(unused)]\n");
+
+    if !block.code.contains("use mingling::prelude::*;") {
+        output.push_str("#[allow(unused_imports)]\nuse mingling::prelude::*;\n\n");
+    }
+
+    output.push_str(&block.code);
+    output.push('\n');
+
+    if !block.has_main {
+        output.push_str("\nfn main() {}\n");
+    }
+
+    if !block.has_gen_program {
+        output.push_str("\nmingling::macros::gen_program!();\n");
+    }
+
+    output
+}
+
+/// Generate build.rs for a build-time block
+///
+/// Default: code wrapped in `fn main() { }`.
+pub fn generate_build_rs(block: &CodeBlock) -> String {
+    let mut output = String::from("#![allow(dead_code)]\n#![allow(unused)]\n");
+
+    if block.has_main {
+        output.push_str(&block.code);
+    } else {
+        output.push_str("fn main() {\n");
+        for line in block.code.lines() {
+            output.push_str("    ");
+            output.push_str(line);
+            output.push('\n');
+        }
+        output.push_str("}\n");
+    }
+
+    output
+}
+
+/// Build a single code block as a Cargo project.
+///
+/// When `is_build_time` is true, `src_content` is written to `build.rs` instead of `src/main.rs`,
+/// and a minimal `src/main.rs` stub (`fn main() {}`) is created.
+pub fn build_block(
+    src_dir: &Path,
+    manifest_path: &Path,
+    cargo_toml: &str,
+    src_content: &str,
+    is_build_time: bool,
+) -> (bool, String) {
+    if let Err(e) = std::fs::create_dir_all(src_dir) {
+        return (false, format!("mkdir: {e}"));
+    }
+
+    // Write Cargo.toml
+    if let Err(e) = std::fs::write(manifest_path, cargo_toml) {
+        return (false, format!("write Cargo.toml: {e}"));
+    }
+
+    if is_build_time {
+        // Write build.rs and a stub main.rs
+        let crate_dir = manifest_path.parent().unwrap();
+        if let Err(e) = std::fs::write(crate_dir.join("build.rs"), src_content) {
+            return (false, format!("write build.rs: {e}"));
+        }
+        if let Err(e) = std::fs::write(src_dir.join("main.rs"), "fn main() {}\n") {
+            return (false, format!("write main.rs: {e}"));
+        }
+    } else {
+        // Normal: write src/main.rs
+        if let Err(e) = std::fs::write(src_dir.join("main.rs"), src_content) {
+            return (false, format!("write main.rs: {e}"));
+        }
+    }
+
+    // Check code — inherit stderr so cargo output is real-time and colored
+    let shell = if cfg!(target_os = "windows") {
+        "powershell"
+    } else {
+        "sh"
+    };
+    let cmd = format!(
+        "cargo check --color=always --manifest-path {}",
+        manifest_path.to_string_lossy()
+    );
+
+    let mut child = match std::process::Command::new(shell)
+        .arg("-c")
+        .arg(&cmd)
+        .stdout(std::process::Stdio::inherit())
+        .stderr(std::process::Stdio::piped())
+        .current_dir(std::env::current_dir().unwrap_or_else(|_| std::path::PathBuf::from(".")))
+        .spawn()
+    {
+        Ok(c) => c,
+        Err(e) => return (false, format!("spawn: {e}")),
+    };
+
+    // Read stderr (buffered, not forwarded — groups print their own output contiguously)
+    use std::io::BufRead;
+    let stderr_handle = child.stderr.take().unwrap();
+    let reader = std::io::BufReader::new(stderr_handle);
+    let mut captured = String::new();
+    for line in reader.lines() {
+        match line {
+            Ok(l) => {
+                captured.push_str(&l);
+                captured.push('\n');
+            }
+            Err(_) => break,
+        }
+    }
+
+    let status = child.wait().unwrap_or_else(|_| std::process::exit(1));
+    let exit_code = status.code().unwrap_or(1);
+
+    if exit_code == 0 {
+        (true, String::new())
+    } else {
+        let mut last_lines: Vec<&str> = captured.lines().rev().take(20).collect();
+        last_lines.reverse();
+        let detail = last_lines.join("\n");
+        (false, format!("exit code {exit_code}\n{detail}"))
+    }
+}
+
+/// Compute a stable hash for a code block based on its dependency configuration.
+///
+/// Blocks with the same features and external dependencies produce the same hash,
+/// allowing them to share a compiled crate and avoid redundant recompilation.
+///
+/// Hash input (all sorted for stability):
+/// - Sorted mingling feature strings
+/// - Sorted external dependency names
+/// - Sorted external dependency versions
+/// - Sorted external deps as `name=version` pairs
+pub fn compute_block_hash(block: &CodeBlock) -> String {
+    let mut features: Vec<&str> = block.features.iter().map(|s| s.as_str()).collect();
+    features.sort();
+    let features_str = features.join(",");
+
+    let mut dep_names: Vec<&str> = block
+        .external_deps
+        .iter()
+        .map(|(n, _)| n.as_str())
+        .collect();
+    dep_names.sort();
+    let dep_names_str = dep_names.join(",");
+
+    let mut dep_versions: Vec<&str> = block
+        .external_deps
+        .iter()
+        .map(|(_, v)| v.as_str())
+        .collect();
+    dep_versions.sort();
+    let dep_versions_str = dep_versions.join(",");
+
+    let mut deps: Vec<String> = block
+        .external_deps
+        .iter()
+        .map(|(n, v)| format!("{n}={v}"))
+        .collect();
+    deps.sort();
+    let deps_str = deps.join(",");
+
+    let canonical = format!("{features_str}\n{dep_names_str}\n{dep_versions_str}\n{deps_str}");
+
+    // FNV-1a 64-bit hash — stable across runs (no random seed)
+    let mut hash: u64 = 0xcbf29ce484222325;
+    for &byte in canonical.as_bytes() {
+        hash ^= byte as u64;
+        hash = hash.wrapping_mul(0x100000001b3);
+    }
+
+    format!("{:016x}", hash)
+}
+
+/// Determine if a block should be treated as a test candidate.
+/// A block is NOT testable only if it has `// NOT VERIFIED` marker.
+pub fn is_block_testable(block: &CodeBlock) -> bool {
+    !block.not_verified
+}
+
+/// Write a summary report
+pub fn write_summary_report(
+    path: &Path,
+    title: &str,
+    results: &[(String, usize, bool, String)],
+    total: usize,
+    passed: usize,
+    failed: usize,
+) {
+    let mut content = String::new();
+    content.push_str(&format!("# {title}\n\n"));
+    content.push_str(&format!(
+        "Tested **{total}** code blocks: **{passed}** passed, **{failed}** failed.\n\n"
+    ));
+    content.push_str("## Results\n\n");
+    content.push_str("| Block | File | Line | Status |\n");
+    content.push_str("|-------|------|------|--------|\n");
+
+    for (i, (file, line, ok, _)) in results.iter().enumerate() {
+        let status = if *ok { "PASS" } else { "FAIL" };
+        let short_file = file.rsplit('/').next().unwrap_or(file);
+        content.push_str(&format!(
+            "| {} | {} | {} | {status} |\n",
+            i + 1,
+            short_file,
+            line
+        ));
+    }
+
+    let has_failures = results.iter().any(|(_, _, ok, _)| !ok);
+    if has_failures {
+        content.push_str("\n## Failed Blocks\n\n");
+        for (i, (file, line, ok, err)) in results.iter().enumerate() {
+            if !ok {
+                content.push_str(&format!(
+                    "### Block {} (`{}`, line {})\n\n```\n{err}\n```\n\n",
+                    i + 1,
+                    file,
+                    line
+                ));
+            }
+        }
+    }
+
+    std::fs::write(path, &content).unwrap_or_else(|e| {
+        eprintln!("Warning: failed to write {path:?}: {e}");
+    });
+
+    println_cargo_style!("Report: written to {}", path.display());
+}
author	魏曹先生 <1992414357@qq.com>	2026-08-19 05:54:00 +0800
committer	魏曹先生 <1992414357@qq.com>	2026-08-19 06:15:20 +0800
commit	ec9edc294fd5e7e29977fc7b0e6fb953422bc0e2 (patch)
tree	bbf89ef4457b8de8a8a9bca5668045d612d27572 /dev
parent	06dfc27194c11e1d1033c292c759a1c5d82e780b (diff)