docs(25): capture phase context

Phase 25: Memory Leak Audit
- Implementation decisions documented
- Phase boundary established

.planning/phases/25-memory-leak-audit/25-CONTEXT.md

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+# Phase 25: Memory Leak Audit - Context
+
+**Gathered:** 2026-02-24
+**Status:** Ready for planning
+
+<domain>
+## Phase Boundary
+
+Audit and fix memory leaks in recording-related components. Verify no memory growth while recording modal is open or actively recording. This phase ensures recording functionality is stable for extended use.
+
+</domain>
+
+<decisions>
+## Implementation Decisions
+
+### Audit scope
+- Audit ALL recording-related code (not just the modal)
+- Claude's discretion on which files are "recording-related" based on codebase analysis
+- Likely includes: useRecordingHelpers.js, JKSessionRecordingModal.js, related Redux state, WebSocket callbacks
+
+### Verification method
+- Use Chrome DevTools memory profiling
+- Create UAT checklist (similar to Phase 23) for manual verification steps
+- Checklist should guide step-by-step memory profiling process
+
+### Fix approach
+- Audit findings go directly into the plan as tasks
+- No separate AUDIT.md file — research phase identifies issues, plan addresses them
+
+### Success threshold
+- Target: Zero memory growth
+- Test scenario 1: Recording modal open idle for 15+ minutes
+- Test scenario 2: Actively recording for 15+ minutes
+- Both scenarios must show no memory growth
+
+### Claude's Discretion
+- Exact files to include in "recording-related" scope
+- Order of audit (which components first)
+- Specific DevTools metrics to track
+- Cleanup pattern implementation details
+
+</decisions>
+
+<specifics>
+## Specific Ideas
+
+- Follow same UAT checklist approach that worked for Phase 23 (v1.4 memory leak prevention)
+- 15+ minute stability metric mirrors v1.4 success criteria
+
+</specifics>
+
+<deferred>
+## Deferred Ideas
+
+None — discussion stayed within phase scope
+
+</deferred>
+
+---
+
+*Phase: 25-memory-leak-audit*
+*Context gathered: 2026-02-24*