# 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)

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## 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."

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## 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.

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## 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.                 |

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## 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) |

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## 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.