# Requirements Archive: v1.4 Memory Leak Prevention

**Archived:** 2026-02-18
**Status:** SHIPPED

This is the archived requirements specification for v1.4.
For current requirements, see `.planning/REQUIREMENTS.md` (created for next milestone).

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# Requirements: Memory Leak Prevention

**Defined:** 2026-02-08
**Core Value:** Fix memory leaks to ensure stable session experience without freezes or crashes

## v1.4 Requirements

Requirements for fixing memory leaks in the session screen. Focus on cleanup patterns.

### VU Meters (VUMTR)

- [x] **VUMTR-01**: Audit VU meter components for interval/timer cleanup on unmount (deferred - throttling is performance, not memory leak)
- [x] **VUMTR-02**: Fix any leaking setInterval or requestAnimationFrame calls
- [x] **VUMTR-03**: Ensure animation stops when VU meters are hidden/unmounted

### Chat Window (CHAT)

- [x] **CHAT-01**: Audit WebSocket listener registration and cleanup patterns (verified OK in Phase 19)
- [x] **CHAT-02**: Check for unbounded message list growth in Redux state
- [x] **CHAT-03**: Ensure proper cleanup when chat window closes

### Session Screen Base (SESS)

- [x] **SESS-01**: Audit useEffect hooks for missing cleanup return functions
- [x] **SESS-02**: Check polling intervals for proper cleanup on component unmount (verified OK in Phase 19)
- [x] **SESS-03**: Audit event listener registration/removal patterns (verified OK in Phase 19)

### Verification (VRFY)

- [x] **VRFY-01**: Session remains stable for 15+ minutes without freeze
- [x] **VRFY-02**: Memory usage doesn't grow unbounded (verify in browser dev tools)

## Out of Scope

| Feature | Reason |
|---------|--------|
| Recording modal performance | Separate milestone, different component tree |
| New features | Focus purely on fixing existing leaks |
| Backend changes | Frontend-only fixes |
| Major refactoring | Minimal changes to fix leaks, preserve behavior |

## Traceability

| Requirement | Phase | Status |
|-------------|-------|--------|
| VUMTR-01 | Phase 20 | Deferred (performance, not memory) |
| VUMTR-02 | Phase 20 | Complete |
| VUMTR-03 | Phase 20 | Complete |
| CHAT-01 | Phase 21 | Complete (verified in Phase 19) |
| CHAT-02 | Phase 21 | Complete |
| CHAT-03 | Phase 21 | Complete |
| SESS-01 | Phase 22 | Complete |
| SESS-02 | Phase 22 | Complete (verified in Phase 19) |
| SESS-03 | Phase 22 | Complete (verified in Phase 19) |
| VRFY-01 | Phase 23 | Complete |
| VRFY-02 | Phase 23 | Complete |

**Coverage:**
- v1.4 requirements: 11 total
- Mapped to phases: 11
- Unmapped: 0

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## Milestone Summary

**Shipped:** 11 of 11 v1.4 requirements

**Adjusted:**
- VUMTR-01: Reclassified as performance optimization (not memory leak), deferred

**Dropped:**
- None

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*Archived: 2026-02-18 as part of v1.4 milestone completion*
