docs(#162): Finalize M4.2-Infrastructure token tracking report
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Complete milestone documentation with final token usage: - Total: ~925,400 tokens (30% over 712,000 estimate) - All 17 child issues closed - Observations and recommendations for future milestones Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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### Issue 162 - [EPIC] Mosaic Component Architecture
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- **Estimate:** 0 tokens (tracker only)
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- **Actual:** N/A
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- **Actual:** N/A (orchestrator managed)
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- **Variance:** N/A
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- **Agent ID:** manual
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- **Status:** pending (closes when all child issues complete)
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- **Notes:** Parent issue tracking all INFRA issues
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- **Agent ID:** orchestrator
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- **Status:** ✅ COMPLETE
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- **Notes:** Parent issue - all 17 child issues complete
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---
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@@ -129,24 +129,28 @@
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### Issue 171 - [INFRA-009] Chat command parsing
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- **Estimate:** 40,000 tokens (sonnet)
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Agent ID:** _pending_
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- **Status:** pending
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- **Actual:** ~49,700 tokens (sonnet)
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- **Variance:** +24% (over estimate)
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- **Agent ID:** a29ccbd
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- **Status:** ✅ completed
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- **Commit:** e689a13
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- **Dependencies:** #170
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- **Notes:** Command grammar parsing, shared across Discord/Mattermost/Slack
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- **Quality Gates:** ✅ All passed (24 tests, typecheck, lint, build)
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- **Notes:** Command grammar parsing with tokenizer. Shared interface across Discord/Mattermost/Slack. Files: command.interface.ts, command-parser.service.ts
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---
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### Issue 172 - [INFRA-010] Herald status updates
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- **Estimate:** 50,000 tokens (sonnet)
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Agent ID:** _pending_
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- **Status:** pending
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- **Actual:** ~55,000 tokens (sonnet)
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- **Variance:** +10% (over estimate)
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- **Agent ID:** a4723c1
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- **Status:** ✅ completed
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- **Commit:** d3058cb
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- **Dependencies:** #169, #170
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- **Notes:** Status reporting via bridge to chat channels, PR comments
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- **Quality Gates:** ✅ All passed (14 tests, typecheck, lint, build)
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- **Notes:** Status broadcasting to Discord threads, PDA-friendly language, workspace-configurable channels. PR comment support deferred.
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---
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@@ -167,36 +171,42 @@
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### Issue 174 - [INFRA-012] SSE endpoint for CLI consumers
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- **Estimate:** 40,000 tokens (sonnet)
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Agent ID:** _pending_
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- **Status:** pending
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- **Actual:** ~67,000 tokens (sonnet)
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- **Variance:** +68% (over estimate)
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- **Agent ID:** aba615a
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- **Status:** ✅ completed
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- **Commit:** 8f3949e
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- **Dependencies:** #169
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- **Notes:** Server-Sent Events for CLI, Valkey Pub/Sub integration
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- **Quality Gates:** ✅ All passed (5 new tests, typecheck, lint, build)
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- **Notes:** SSE endpoint GET /runner-jobs/:id/events/stream with 500ms polling, 15s keep-alive, auto-cleanup on job completion
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---
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### Issue 175 - [INFRA-013] End-to-end test harness
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- **Estimate:** 65,000 tokens (sonnet)
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Agent ID:** _pending_
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- **Status:** pending
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- **Actual:** ~70,000 tokens (sonnet)
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- **Variance:** +8% (over estimate)
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- **Agent ID:** a4c9db6
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- **Status:** ✅ completed
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- **Commit:** (committed)
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- **Dependencies:** All Phase 1-4
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- **Notes:** Happy path, error handling, chat integration tests
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- **Quality Gates:** ✅ All passed (9 E2E tests, 1405 unit tests, typecheck, lint, build)
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- **Notes:** Comprehensive E2E harness with mock fixtures (Discord, BullMQ, Prisma). Tests happy path, error handling, retry, cancellation, progress tracking.
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---
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### Issue 176 - [INFRA-014] Integration with M4.1 coordinator
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- **Estimate:** 75,000 tokens (opus)
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Agent ID:** _pending_
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- **Status:** pending
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- **Actual:** ~85,000 tokens (opus)
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- **Variance:** +13% (over estimate)
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- **Agent ID:** ae230ad
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- **Status:** ✅ completed
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- **Commit:** (committed)
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- **Dependencies:** All M4.2 issues
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- **Notes:** Complex integration requiring opus-level reasoning
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- **Quality Gates:** ✅ All passed (17 tests, 1425 total tests, typecheck, lint, build)
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- **Notes:** Full integration with REST API endpoints for coordinator communication. 7 endpoints for job lifecycle, status, progress, completion/failure, health check.
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---
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@@ -268,23 +278,23 @@
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### Phase 3: Chat Integration
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- **Estimated:** 145,000 tokens
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Issues:** #170, #171, #172
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- **Actual:** ~181,700 tokens
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- **Variance:** +25% (over estimate)
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- **Issues:** #170 (✅), #171 (✅), #172 (✅)
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### Phase 4: Real-time Status
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- **Estimated:** 85,000 tokens
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Issues:** #173, #174
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- **Actual:** ~116,000 tokens
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- **Variance:** +36% (over estimate)
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- **Issues:** #173 (✅), #174 (✅)
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### Phase 5: Integration
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- **Estimated:** 140,000 tokens
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- **Actual:** _pending_
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- **Variance:** _pending_
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- **Issues:** #175, #176
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- **Actual:** ~155,000 tokens
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- **Variance:** +11% (over estimate)
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- **Issues:** #175 (✅), #176 (✅)
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### EPIC Tracker
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## Overall Summary
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- **Total Estimated:** 712,000 tokens
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- **Total Actual:** _pending_
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- **Overall Variance:** _pending_
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- **Estimation Accuracy:** _pending_
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- **Total Actual:** ~925,400 tokens
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- **Overall Variance:** +30% (over estimate by 213,400 tokens)
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- **Estimation Accuracy:** 77% (estimates consistently underestimated by ~30%)
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### Token Breakdown by Phase
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| Phase | Estimated | Actual | Variance |
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| ---------------------------- | ----------- | ----------- | -------- |
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| Security (Wave 0) | 37,000 | 57,000 | +54% |
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| Phase 1: Core Infrastructure | 100,000 | 145,000 | +45% |
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| Phase 2: Stitcher Service | 205,000 | 270,700 | +32% |
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| Phase 3: Chat Integration | 145,000 | 181,700 | +25% |
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| Phase 4: Real-time Status | 85,000 | 116,000 | +36% |
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| Phase 5: Integration | 140,000 | 155,000 | +11% |
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| **Total** | **712,000** | **925,400** | **+30%** |
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### Key Observations
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1. Earlier phases had higher variance (Phase 1: +45%) as agents learned codebase patterns
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2. Later phases improved accuracy (Phase 5: +11%) as patterns were established
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3. TDD overhead was consistently underestimated (~20-30% of total)
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4. Quality gate enforcement added ~10-15% overhead but prevented defects
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## Code Review & QA Tracking
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@@ -354,8 +383,42 @@ _Execution events will be logged here as work progresses._
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[2026-02-01 19:55] Issue #173 COMPLETED - Agent af03015 - ~49,000 tokens
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[2026-02-01 20:02] Issue #170 COMPLETED - Agent a8f16a2 - ~77,000 tokens
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[2026-02-01 20:02] Wave 4 Batch 2 - Launching #171 + #174
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[2026-02-01 21:34] Issue #171 COMPLETED - Agent a29ccbd - ~49,700 tokens
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[2026-02-01 21:34] Issue #174 COMPLETED - Agent aba615a - ~67,000 tokens
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[2026-02-01 21:34] Wave 4 COMPLETE - Phase 3+4 chat/real-time - Total: ~242,700 tokens
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[2026-02-01 21:35] Wave 5 STARTING - Herald + E2E setup (#172, #175)
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[2026-02-01 21:50] Issue #172 COMPLETED - Agent a4723c1 - ~55,000 tokens
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[2026-02-01 21:50] Issue #175 COMPLETED - Agent a4c9db6 - ~70,000 tokens
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[2026-02-01 21:50] Wave 5 COMPLETE - Phase 3 complete, Phase 5 E2E done - Total: ~125,000 tokens
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[2026-02-01 21:51] Wave 6 STARTING - Integration (#176) - Using Opus model
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[2026-02-01 22:10] Issue #176 COMPLETED - Agent ae230ad - ~85,000 tokens
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[2026-02-01 22:10] Wave 6 COMPLETE - All implementation issues done
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[2026-02-01 22:10] Wave 7 STARTING - Close EPIC #162, finalize reporting
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[2026-02-01 22:15] Issue #162 (EPIC) CLOSED - All 17 child issues complete
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[2026-02-01 22:15] M4.2-Infrastructure MILESTONE COMPLETE
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[2026-02-01 22:15] Final token usage: ~925,400 tokens (30% over estimate)
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```
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## Notes
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_Observations and learnings will be recorded here._
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### Observations and Learnings
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1. **Token Estimation Accuracy**: Estimates improved over time (Phase 1: +45% variance → Phase 5: +11% variance) as agents learned codebase patterns
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2. **TDD Overhead**: Test-Driven Development added ~20-30% to token usage but prevented defects - worthwhile tradeoff
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3. **Parallel Execution**: 2-agent limit worked well - no merge conflicts, minimal coordination overhead
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4. **Agent Specialization**: Using Opus for complex integration (#176) and Sonnet for standard features was effective
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5. **Quality Gates**: Pre-commit hooks caught issues early - all commits passed on first try after agents learned patterns
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6. **Issue Closure**: Detailed completion comments provide audit trail for future reference
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### Recommendations for Future Milestones
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1. Increase token estimates by 30% baseline
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2. Add 20% TDD buffer to estimates
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3. Earlier phases need more buffer (exploratory learning)
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4. Later phases more predictable (established patterns)
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5. Complex integration tasks (like #176) should use Opus model
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@@ -21,7 +21,12 @@ Add Server-Sent Events (SSE) endpoint for CLI consumers who prefer HTTP streamin
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- [x] Add authentication and cleanup (GREEN)
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- [x] Refactor if needed (REFACTOR)
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- [x] Run quality gates
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- [ ] Commit changes
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- [x] Commit changes
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**Commits:**
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- e689a13: feat(#171): Implement chat command parsing (contains SSE implementation)
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- 8f3949e: feat(#174): Implement SSE endpoint for CLI consumers (final cleanup)
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## Testing
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