refactor(ci-new): extract report log collection into resource

Move log parsing, ANSI stripping, and git info retrieval into a
`ResCollectLogs` resource read once during CI setup, keeping the
report command focused on rendering. Also add a `package_dirs` map
to `Manifests` for direct package name lookups.

2 files changed, 197 insertions, 4 deletions

diff --git a/mingling_ci/src/res/collect_logs.rs b/mingling_ci/src/res/collect_logs.rs
new file mode 100644
index 0000000..b764b49
--- /dev/null
+++ b/mingling_ci/src/res/collect_logs.rs
@@ -0,0 +1,190 @@
+//! 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, package) -> os -> ok`
+    pub statuses: BTreeMap<(String, String), BTreeMap<String, bool>>,
+    /// `(task, os, package) -> stripped error output`
+    pub err_outputs: BTreeMap<(String, String, String), String>,
+    pub git: GitInfo,
+}
+
+impl ResCollectLogs {
+    /// Reads `collect/{task}/{os}/{package}.{ok|err}` and the git info.
+    #[must_use]
+    pub fn read() -> Self {
+        let mut logs = Self::default();
+
+        if let Ok(task_entries) = std::fs::read_dir(COLLECT_DIR) {
+            for task_entry in task_entries.flatten() {
+                if !task_entry.file_type().is_ok_and(|t| t.is_dir()) {
+                    continue;
+                }
+                let task = task_entry.file_name().to_string_lossy().into_owned();
+
+                let Ok(os_entries) = std::fs::read_dir(task_entry.path()) else {
+                    continue;
+                };
+                for os_entry in os_entries.flatten() {
+                    if !os_entry.file_type().is_ok_and(|t| t.is_dir()) {
+                        continue;
+                    }
+                    let os = os_entry.file_name().to_string_lossy().into_owned();
+
+                    let Ok(files) = std::fs::read_dir(os_entry.path()) else {
+                        continue;
+                    };
+                    for file in files.flatten() {
+                        let file_name = file.file_name().to_string_lossy().into_owned();
+                        if let Some((package, ok)) = parse_log_name(&file_name) {
+                            logs.statuses
+                                .entry((task.clone(), package.clone()))
+                                .or_default()
+                                .insert(os.clone(), ok);
+                            if !ok {
+                                let err = std::fs::read_to_string(file.path()).unwrap_or_default();
+                                logs.err_outputs
+                                    .insert((task.clone(), os.clone(), package), strip_ansi(&err));
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        logs.git = git_info();
+        logs
+    }
+}
+
+#[program_setup]
+pub fn report_setup(p: &mut Program<ThisProgram>) {
+    p.with_resource(ResCollectLogs::read());
+}
+
+/// Parses a `{package}.{ok|err}` file name into `(package, ok)`.
+fn parse_log_name(file_name: &str) -> Option<(String, bool)> {
+    file_name
+        .strip_suffix(".ok")
+        .map(|n| (n.to_string(), true))
+        .or_else(|| {
+            file_name
+                .strip_suffix(".err")
+                .map(|n| (n.to_string(), false))
+        })
+}
+
+/// 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/mingling_ci/src/res/manifests.rs b/mingling_ci/src/res/manifests.rs
index 56829bb..91836d6 100644
--- a/mingling_ci/src/res/manifests.rs
+++ b/mingling_ci/src/res/manifests.rs
@@ -1,3 +1,4 @@
+use std::collections::HashMap;
 use std::path::{Path, PathBuf};
 
 use mingling::{Program, macros::program_setup};
@@ -13,13 +14,15 @@ const IGNORED_DIRS_FILE: &str = include_str!("../../../.config/ci-ignored-dirs.t
 #[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>) {
-    p.with_resource(Manifests {
-        path: cargo_tomls(),
-    });
+    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,
@@ -77,7 +80,7 @@ fn is_ignored(path: &str, ignored: &[String]) -> bool {
 ///
 /// Falls back to the parent directory name (e.g. `mingling_core/Cargo.toml` →
 /// `mingling_core`, workspace root → `(root)`), matching the legacy CI.
-pub(crate) fn package_name(path: &Path) -> String {
+fn package_name(path: &Path) -> String {
     let fallback = || {
         path.parent()
             .and_then(|p| p.file_name())