chore: nuke entire skills package from codebase

[bedus-creation]

Summary

• Removes fastapi_startkit/src/fastapi_startkit/skills/ (12 files: package, adapters, commands, parser, provider, registry, SKILL.md stubs)
• Removes fastapi_startkit/tests/skills/ (5 files: test_adapters, test_commands, test_parser, test_registry, init)
• No changes needed to pyproject.toml (no [skills] extra existed)
• No changes needed to example/ai-agent-app/ (.ai/ and .claude/skills/ were untracked; bootstrap/application.py had no skills imports; pyproject.toml had no skills dependency)

17 files deleted, 1 402 lines removed.

Test plan

• Run uv run pytest fastapi_startkit/ — no skills tests remain, existing test suite should pass
• Confirm fastapi_startkit/src/fastapi_startkit/skills/ directory is gone
• Confirm fastapi_startkit/tests/skills/ directory is gone

🤖 Generated with Claude Code

[bedus-creation]

Code Review by Reviewer-389 — APPROVED ✅

All checklist items verified clean.

Checklist results

Item	Result
fastapi_startkit/src/fastapi_startkit/skills/ fully gone	✅ All 10 source files deleted
fastapi_startkit/tests/skills/ fully gone	✅ All 5 test files deleted
No orphaned from fastapi_startkit.skills / import skills	✅ Zero hits across entire codebase
pyproject.toml has no [skills] extra	✅ Confirmed absent
example/ai-agent-app has no .ai/ or .claude/skills/ dirs	✅ Neither is git-tracked; local artifacts only
Tests pass	✅ 1353 passed, 7 skipped, 0 failures
No unrelated files changed	✅ All 17 changed files are pure deletions within skills dirs

Notes

• The .ai/ dir in example/ai-agent-app is untracked by git (confirmed via git ls-files --error-unmatch). The .claude/ dir is gitignored. Neither requires a PR change.
• SQLAlchemy pool warnings in the test run are pre-existing and unrelated.
• The diff is surgical: nothing outside skills/ touched.

Verdict: merge when ready.