docs(clinerules): enhance standards with P0/P1 fixes from review

- Fix line length standard from 79 to 100 characters
- Add comprehensive Security Standards section
  - Input validation patterns
  - Subprocess execution security
  - Secrets management
  - Dependency security scanning
- Add Git Workflow documentation
  - Conventional commits format
  - Branching strategy
  - File recovery guidelines
  - Pull request requirements
- Add Domain-Specific Patterns section
  - Jinja2 template standards
  - Click CLI design patterns
  - Rollback mechanism guidelines
  - File operations best practices
- Update ruff configuration to match actual project settings
- Remove duplicate pydantic package listing
- Add Structure Note clarifying this project vs scaffolded projects
- Create comprehensive review report at .clinerules/review_report.md

Review identified 15 critical issues with detailed recommendations.
Implemented Phase 1 (P0) and majority of Phase 2 (P1) fixes.

Author: Magic-Man-us