chore: remove unauthorized documentation and temporary debug files

Deleted files that violated global rules (no documentation creation without explicit request):
- AUTODIFF_*.md (4 files) - implementation plans and architecture docs
- MIXED_PRECISION_ARCHITECTURE.md
- PLATFORM_INTEGRATION_*.md (2 files)
- CI-CD-SETUP.md
- .project-rules.md

Deleted temporary debug/investigation files:
- unresolved-*.json (11 files) - PR comment debugging artifacts
- pr437-threads.json
- temp_adaptive.txt
- Issue 333 audit files (2 files with malformed paths)

Total: 24 files removed

These files should never have been created per global Claude.md rules.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: ooples