v1.11.1

Changed

• Docs rewritten for developer experience. Every page now opens with a
  working command and its real output, options follow the happy path instead
  of interrupting it, and failures are listed as symptom, cause, fix. New
  CLI Reference page collects every flag, environment variable, and exit
  code in one place; the stability contract is now tables. No engine change.
• Toolchain pins can no longer drift. The ruff version the pre-commit
  hook runs is pinned equal to the one make lint and CI run, a test fails
  the build when the two disagree, and the codespell hook's tomli is pinned
  too. Developer tooling only; nothing ships in the package.