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brachnha-insight/_bmad-output/implementation-artifacts/epic-3-retro-2026-01-24.md
Max 3fbbb1a93b Initial commit: Brachnha Insight project setup 
- Next.js 14+ with App Router and TypeScript
- Tailwind CSS and ShadCN UI styling
- Zustand state management
- Dexie.js for IndexedDB (local-first data)
- Auth.js v5 for authentication
- BMAD framework integration

Co-Authored-By: Claude <noreply@anthropic.com>
2026-01-26 12:28:43 +07:00

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Epic Retrospective

Epic: Epic 3: "My Legacy" - History, Offline Sync & PWA Polish Date: 2026-01-24 Participants: Max (Project Lead), Bob (Scrum Master), Alice (Product Owner), Charlie (Senior Dev), Dana (QA)

1. Team Discussion (Simulated)

Bob (SM): "Welcome everyone. Epic 3 was a big one - we moved from a single-session tool to a persistent journal application. How did it go?"

Alice (PO): "The History Feed (Story 3.1) changes the whole feel of the app. Seeing past 'Enlightenments' stacks up gives a real sense of progress. And the PWA install (Story 3.4) makes it feel native on my phone."

Charlie (Dev): "I'm proud of the Offline Architecture (Story 3.3). Building the SyncQueue infrastructure even without a server backend was the right call. It means user actions always succeed immediately, even in airplane mode."

Dana (QA): "From a testing perspective, the OfflineIndicator is very clear. It's easy to verify if I'm saving locally or synced. Also, the Delete confirmation flow (Story 3.2) is robust - no accidental data loss."

Max (Lead): "We stuck strictly to the 'Logic Sandwich' pattern again. The separation of HistoryStore (UI state) and DraftService (DB logic) made the complex pagination in Story 3.1 much easier to debug."

Charlie (Dev): "One challenge was the beforeinstallprompt event for PWA. We had to be careful not to break SSR in Next.js. Moving that logic to a client-side PWAInitializer component was a key fix."

Bob (SM): "Good catch. It seems our architectural discipline is paying off in stability."

2. Epic Review

Successes (Start doing / Continue doing)

  • Local-First Resilience: Story 3.3's offline-first approach (save local, queue for later) ensures zero data loss. This is a core value of our "Privacy First" promise.
  • Service Layer Discipline: We consistently kept DB logic out of UI components. The DraftService grew to handle history, deletion, and sync without bloating the view layer.
  • PWA UX: The custom install prompt (Story 3.4) appearing only after engagement (1 session) is much friendlier than the default browser nagging.
  • Accessibility: Story 3.2's DeleteConfirmDialog and Story 3.1's HistoryCard meet WCAG AA standards (focus management, touch targets, ARIA labels).

Challenges (Stop doing / Improve)

  • SSR vs Client-Side Logic: We initially put window-dependent code (PWA install listeners) in layout.tsx, causing server-side errors.
    • Fix: Created PWAInitializer.tsx client component.
    • Lesson: Always isolate browser-specific APIs in dedicated client components.
  • Database Schema Evolution: Adding the syncQueue table required a schema version bump (v2 -> v3). While smooth this time, we need to be careful with migrations as user data grows.

Key Insights & Lessons Learned

  • Infrastructure First: Building the SyncQueue (Story 3.3) before we have a server might seem premature, but it solves "Offline Mode" immediately. It was the right architectural choice.
  • Engagement-Based UX: Prompting for PWA install only after value delivery (completed draft) likely increases conversion. We should apply this "earn the right" pattern elsewhere.

3. Metrics & KPI Check-in

Metric Status Notes
Story Completion 4 / 4 Stories 3.1 - 3.4 completed.
Test Coverage Very High ~40 new tests added for SyncManager, OfflineStore, and PWA logic.
NFR Compliance Pass Offline Support (NFR-05) achieved; App load time (NFR-02) < 1.5s via pagination.
Tech Debt Low Clean separation of concerns. Schema migrations handled cleanly.

4. Action Items

Item Priority Owner Status
Monitor Client-Side Storage Limits Medium Dev New (As history grows)
Expand "Earned" UX Patterns Low UX New (Apply to other prompts)
Review SyncQueue for Server Integration High Architect Pending (When server is added)

5. Next Epic Preview

Epic 4: "Power User Settings" - BYOD & Configuration Goal: Allow users to bring their own API keys (OpenAI, DeepSeek) and configure models.

Status: ALREADY COMPLETED (We did Epics out of order or parallel). Note: Since Epic 4 is also done, we are effectively finished with the Core MVP roadmap.

Conclusion: With Epic 3 and 4 complete, the application is feature-complete for V1 release.