Module runner 

Tool execution engine for L1 commodity diagnostics

Spawns diagnostic tools as subprocesses, captures their output, parses it through the appropriate parser, and handles timeouts and failures.

Key behaviors:

• Binary not found: returns ToolResult { success: false } with spawn error
• Tool timeout: kills child process, returns timeout error
• Non-zero exit with parseable output: success: true (linters exit non-zero on findings)
• Parse error: success: false with parse error detail
• After parsing: injects tool.name into each L1Finding.tool [PM-6]

Parallel execution uses std::thread::scope (Rust 1.63+) for safe scoped threads.

Structs

ToolRunner

Executes diagnostic tools and captures their output.

Constants

MAX_OUTPUT_BYTES

Maximum bytes of stdout/stderr to retain from a tool subprocess.