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-# Doc Code Block Verification System
-
-This system automatically extracts and compiles Rust code blocks from docs, ensuring all example code stays usable in CI.
-
-## Config
-
-Specify which Markdown files to verify via [`verified-docs.toml`](https://github.com/mingling-rs/mingling/blob/main/verified-docs.toml) in the project root.
-
-You can also test a single file via command-line arg:
-
-```sh
-./run-tools.sh test-all-markdown-code docs/pages/1-getting-started.md
-```
- 
-```powershell
-.\run-tools.ps1 test-all-markdown-code docs/pages/1-getting-started.md
-```
- 
-## Default Rules
-
-Every verified ` ```rust ` code block gets the following injected automatically at compile time — no need to write them explicitly in the block:
-
-### 1. `#![allow(dead_code)]` and `#![allow(unused)]`
-
-Added at the top of the generated `main.rs` to suppress dead-code warnings from partial code snippets.
-
-### 2. `use mingling::prelude::*;`
-
-If the block already has `use mingling::prelude::*;`, it won't be inserted again.
-
-Otherwise it's inserted automatically (with `#[allow(unused_imports)]`).
-
-### 3. `fn main() {}`
-
-If the block **does not contain** a `fn main` definition, an empty `fn main() {}` is appended,
-
-so the block can compile as a standalone binary project.
-
-### 4. `mingling::macros::gen_program!();`
-
-If the block **does not contain** a `gen_program!()` call,
-
-`mingling::macros::gen_program!();` is appended automatically.
-
-This call is required by the mingling framework.
-
-### 5. Build Cache Dedup — Shared Dep Hash
-
-Code blocks with the same `Features` and `Dependencies` are automatically grouped into the same compile group, sharing one `Cargo.toml` and build artifacts, avoiding redundant compilations.
-
-> [!NOTE]
->
-> Hash input (all sorted):
->
-> 1. Feature list
-> 2. External dep name list
-> 3. External dep version list
-> 4. `name=version` pairs
->
-> Uses FNV-1a 64-bit hash, stable across runs.
-
-## Verification Steps
-
-After the **default rules** are applied, each block goes through:
-
-### 1. Block Extraction
-
-- Only ` ```rust ` fenced code blocks are extracted.
-- Empty blocks (no code lines) are skipped.
-- Blocks with `// NOT VERIFIED` alone are skipped.
-
-### 2. Temp Project Generation
-
-Each block (or each dedup-hash group) gets its own Cargo project:
-
-```
-.temp/doc-test/<hash>/
-├── Cargo.toml
-└── src/
-    └── main.rs
-```
- 
-### 3. Build Verification
-
-Compiled with `cargo build --release`, stderr inherited to the terminal for real-time progress.
-
-- **Build OK** → **PASS**
-- **Build FAIL** → **FAIL**, last 20 lines of error captured.
-
-### 4. Report
-
-After all tests, a report is written to `.temp/DOCS-TEST-RESULT.md`, containing:
-
-- Total tests, passed, failed
-- Table of results per block (block #, file, line, status)
-- Detailed errors for failed blocks
-
-### 5. Exit Code
-
-- Any block fails → non-zero exit code (blocks CI pipeline).
-- All pass → zero exit code.
-
----
-
-## Metadata Tag Rules
-
-At the start of a ` ```rust ` block (before code content), use these comment headers to declare metadata. Headers are parsed in order; everything after them is treated as code:
-
-### `// NOT VERIFIED`
-
-Marks the block **not to be compiled**. Use for illustrative snippets that can't compile on their own.
-
-```rust
-// NOT VERIFIED
-// This block is illustrative only, won't be compiled
-fn placeholder() {}
-```
- 
-### `// Features: [...]`
-
-Declares the mingling crate features needed by this block, as a JSON string array. These features are written into `Cargo.toml`'s `[dependencies]`.
-
-```rust
-// Features: ["full", "serde"]
-```
- 
-### `// Dependencies:`
-
-Declares external crate deps needed by the block. After `// Dependencies:`, each dep goes on one line: `// crate_name = "version"`.
-
-```rust
-// Dependencies:
-// serde = "1"
-// clap = "4"
-```
- 
-> [!TIP]
->
-> **Special handling**:
->
-> For deps named `serde` or `clap` with a plain string version,
->
-> `features = ["derive"]` is auto-added.
->
-> If the version uses a TOML inline table (e.g. `{ version = "1", features = ["derive"] }`),
->
-> it's kept as-is.
-
----
-
-## Structure Overview
-
-| Module                                        | Responsibility                                                                      |
-| --------------------------------------------- | ----------------------------------------------------------------------------------- |
-| `dev_tools/src/verify.rs`                     | Block parsing, Cargo.toml/main.rs generation, build exec, hash dedup, report output |
-| `dev_tools/src/bin/test-all-markdown-code.rs` | Entry point: read config, collect files, orchestrate tests, aggregate results       |
-| `verified-docs.toml`                          | Specifies which doc files to verify                                                 |
-
----
-
-## Full Example
-
-````markdown
-```rust
-// Features: ["parser"]
-// Dependencies:
-// serde = "1"
-
-// Example code ...
-```
-````
- 
-The above block compiles equivalently to:
-
-```rust
-#![allow(dead_code)]
-#![allow(unused)]
- 
-#[allow(unused_imports)]
-use mingling::prelude::*;
- 
-// Example code ...
- 
-fn main() {}
- 
-mingling::macros::gen_program!();
-```
- 
-`Cargo.toml` will contain:
-
-```toml
-[dependencies]
-mingling = { path = "../../mingling", features = ["parser"] }
-serde = { version = "1", features = ["derive"] }
-```