📝 Update implementation spec with Phase 4 status and LLM-friendl…

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…y roadmap

Project Analysis Summary:

• ✅ Phases 1-4 complete (65% overall, 85% MVP)
• Core PWA management fully operational
• Comprehensive test suite (226 tests, ~75-80% coverage)
• CI/CD pipeline passing all checks

Updated Documentation:

1. Implementation-specification.md:
   • Added status summary at top
   • Marked Phase 4 (URL Handler System) as complete
   • Revised Phase 5 (Validation & Audit) with detailed subtasks
   • Revised Phase 6 (Testing) to show what's done vs pending
   • Revised Phase 7 (Release Prep) with actionable items
   • Added comprehensive LLM Implementation Guide section

Key Changes for LLM Automation:

• Detailed function signatures for each command
• Step-by-step implementation instructions
• Test structure examples and acceptance criteria
• Mock strategy for E2E tests
• Clear separation of system calls vs file operations
• Reference to existing code patterns

Remaining Work (15-20 hours across 3-5 sessions):

• Session 1: audit + sync commands (HIGH PRIORITY)
• Session 2: doctor + config commands
• Session 3: edit command + E2E test suite
• Session 4: Documentation (USAGE, TROUBLESHOOTING)
• Session 5: Shell completion + release prep

Estimated MVP Completion: 85% → 100% in next 2-3 sessions
Estimated Full Release: 3-5 sessions

All specifications now include:

• Exact file paths to create
• Complete function signatures
• Implementation steps
• Integration points with existing code
• Test requirements with >90% coverage targets
• CLI wiring instructions
• No manual intervention required