chore: bump ruff version constraint from 0.13 to 0.16

[hermclaw]

Summary

• Bumps all ruff>=0.13 version constraints to ruff>=0.16 to reflect the current ruff release line.
• Touches 3 patterns (8 occurrences total):
  • P010 (uv & pyproject.toml) — 3 references in dev dep examples
  • P011 (ruff) — 3 references including the reference repo description
  • P012 (ty) — 2 references in dev dep examples

Test plan

• Confirm the version bump is the only change (git diff is purely mechanical)