{
  "checker": {
    "details": {
      "argv": [
        "/workspace/target/release/mq",
        ".h"
      ],
      "kind": "cli",
      "needs_browser": false,
      "needs_credentials": false,
      "returncode": 0,
      "scope": "product operation",
      "stderr": "",
      "stdout": "# Title\n## Sub",
      "working": true
    },
    "status": "PASS"
  },
  "deviations": [
    "README Quick Install (curl -sSL https://mqlang.org/install.sh | bash) was not used: it installs a prebuilt release binary rather than the pinned commit. Instead built from the pinned source with cargo, using the README 'Install from Github' development path equivalent (cargo build from /workspace)."
  ],
  "main_blocker": null,
  "operation": "Ran README 'Basic usage' example: mq '.h' (extract all headings) on a Markdown document via stdin, producing '# Title' and '## Sub'.",
  "operation_scope": "CLI only, built from pinned source at df9f6cc37d1da20336307fab1d362b1c1153600c (mq-run 0.9.3). Not exercised: REPL, LSP, web API, language bindings, debugger, or the full test/lint suites (excluded by task). No browser needed.",
  "outcome": "working",
  "steps": [
    "Read README.md (Installation, Basic usage, Examples sections)",
    "apt-get install build-essential pkg-config curl ca-certificates",
    "Installed rustup toolchain 1.98.1 (rust-toolchain.toml) with minimal profile",
    "cargo build --release --locked -p mq-run --bin mq (finished OK in 3m46s)",
    "./target/release/mq --version -> mq 0.9.3",
    "printf sample | ./target/release/mq '.h' -> '# Title' / '## Sub' (rc=0)"
  ],
  "stuck_step": null,
  "suggested_fix": null
}