Restructure CI to exactly 3 checks: Static Analysis, Tests, Reviews

- Delete old workflows (basic-ci.yml, ci.yml, e2e-tests.yml, deployment-ci.yml)
- Delete old fragmented composite actions
- Create 3 clean composite actions:
  - static-analysis: Lint (ESLint) + Types (TypeScript)
  - tests: Unit (Vitest) + E2E (Playwright, only if has_app)
  - reviews: Requirements (gate), Code Quality, Context, UI
- Rewrite ci-pipeline.yml with only 3 jobs
- Context Review now only checks CLAUDE.md files that are parents of changed files
- Reviews post single consolidated comment

Dependency chain:
Static Analysis → Tests → Reviews

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: sylvansys