docs(26): complete JamTrack Polish phase
- Phase 26 verified: 4/4 must-haves passed - Requirements JT-01 through JT-04 complete - Ready for Phase 27 (Backing Track Sync) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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@ -9,10 +9,10 @@ Requirements for polishing media player features. Each maps to roadmap phases.
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### JamTrack Fixes
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- [ ] **JT-01**: Defer stem/player UI rendering until backend processing completes
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- [ ] **JT-02**: Fix WindowPortal sizing to match player content (460x350)
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- [ ] **JT-03**: Implement "Create custom mix" navigation to `/jamtracks/{id}` in new tab
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- [ ] **JT-04**: Add callback cleanup for window.jamTrackDownload* in mediaSlice
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- [x] **JT-01**: Defer stem/player UI rendering until backend processing completes ✓
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- [x] **JT-02**: Fix WindowPortal sizing to match player content (460x350) ✓
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- [x] **JT-03**: Implement "Create custom mix" navigation to `/jamtracks/{id}` in new tab ✓
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- [x] **JT-04**: Add callback cleanup for window.jamTrackDownload* in mediaSlice ✓
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### Backing Track Fixes
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@ -46,10 +46,10 @@ Explicitly excluded for this milestone.
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| Requirement | Phase | Status |
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|-------------|-------|--------|
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| JT-01 | Phase 26 | Pending |
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| JT-02 | Phase 26 | Pending |
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| JT-03 | Phase 26 | Pending |
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| JT-04 | Phase 26 | Pending |
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| JT-01 | Phase 26 | Complete |
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| JT-02 | Phase 26 | Complete |
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| JT-03 | Phase 26 | Complete |
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| JT-04 | Phase 26 | Complete |
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| BT-01 | Phase 27 | Pending |
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| BT-02 | Phase 27 | Pending |
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| MET-01 | Phase 28 | Pending |
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@ -16,7 +16,7 @@ v1.6 addresses usability issues reported in three media features: JamTrack (load
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## Phases
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- [ ] **Phase 26: JamTrack Polish** - Fix loading sequence, sizing, navigation, and cleanup
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- [x] **Phase 26: JamTrack Polish** - Fix loading sequence, sizing, navigation, and cleanup ✓
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- [ ] **Phase 27: Backing Track Sync** - Enable track sync and async cleanup
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- [ ] **Phase 28: Metronome Responsiveness** - Debounce controls and cleanup timers
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@ -34,8 +34,8 @@ v1.6 addresses usability issues reported in three media features: JamTrack (load
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**Plans**: 2 plans
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Plans:
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- [ ] 26-01-PLAN.md - Fix window sizing and create custom mix navigation
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- [ ] 26-02-PLAN.md - Add callback cleanup and defer controls rendering
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- [x] 26-01-PLAN.md - Fix window sizing and create custom mix navigation ✓
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- [x] 26-02-PLAN.md - Add callback cleanup and defer controls rendering ✓
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### Phase 27: Backing Track Sync
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**Goal**: Backing Track appears in session screen when opened
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@ -68,7 +68,7 @@ Plans:
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| Phase | Milestone | Plans Complete | Status | Completed |
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|-------|-----------|----------------|--------|-----------|
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| 26. JamTrack Polish | v1.6 | 0/2 | Planned | - |
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| 26. JamTrack Polish | v1.6 | 2/2 | Complete | 2026-02-25 |
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| 27. Backing Track Sync | v1.6 | 0/TBD | Not started | - |
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| 28. Metronome Responsiveness | v1.6 | 0/TBD | Not started | - |
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@ -0,0 +1,95 @@
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---
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phase: 26-jamtrack-polish
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verified: 2026-02-25T13:47:04Z
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status: passed
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score: 4/4 must-haves verified
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re_verification: false
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---
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# Phase 26: JamTrack Polish Verification Report
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**Phase Goal:** JamTrack player works correctly from selection through playback without freezes
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**Verified:** 2026-02-25T13:47:04Z
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**Status:** passed
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**Re-verification:** No - initial verification
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## Goal Achievement
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### Observable Truths
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| # | Truth | Status | Evidence |
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|---|-------|--------|----------|
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| 1 | User sees loading indicator while backend processes track (not premature stem UI) | VERIFIED | Line 598-715: Download state banner shows for 'checking', 'packaging', 'downloading', 'keying' states. Line 718-722: Loading indicator shown when isLoadingSync is true. Line 725: Controls only render when downloadState is 'idle' or 'synchronized' AND not isLoadingSync |
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| 2 | JamTrack player fits properly in popup window without scrollbars | VERIFIED | JKSessionScreen.js line 1750: WindowPortal has `width=460,height=350` with `scrollbars=no` |
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| 3 | "Create custom mix" button opens JamTrack editor in new tab | VERIFIED | JKSessionJamTrackPlayer.js line 857: `window.open(\`/jamtracks/${jamTrack?.id}\`, '_blank', 'noopener,noreferrer')` |
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| 4 | No console warnings about leaked callbacks when closing JamTrack or navigating away | VERIFIED | mediaSlice.js lines 635-641: cleanupJamTrackCallbacks() deletes window.jamTrackDownloadProgress/Success/Fail. JKSessionJamTrackPlayer.js line 174: Called in useEffect cleanup |
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**Score:** 4/4 truths verified
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### Required Artifacts
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| Artifact | Expected | Status | Details |
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|----------|----------|--------|---------|
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| `jam-ui/src/components/client/JKSessionScreen.js` | Corrected WindowPortal dimensions | VERIFIED | Line 1750: `width=460,height=350,scrollbars=no` (1801 lines, substantive) |
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| `jam-ui/src/components/client/JKSessionJamTrackPlayer.js` | Working create custom mix navigation, callback cleanup, deferred controls | VERIFIED | Line 857: window.open for custom mix. Line 9: imports cleanupJamTrackCallbacks. Line 174: calls cleanup on unmount. Line 725: deferred controls render (898 lines, substantive) |
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| `jam-ui/src/store/features/mediaSlice.js` | cleanupJamTrackCallbacks function | VERIFIED | Lines 635-641: Exports function that deletes window.jamTrackDownload* globals (650 lines, substantive) |
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### Key Link Verification
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| From | To | Via | Status | Details |
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|------|-----|-----|--------|---------|
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| JKSessionJamTrackPlayer.js | /jamtracks/{id} | window.open on create custom mix click | WIRED | Line 857: `window.open(\`/jamtracks/${jamTrack?.id}\`, '_blank', 'noopener,noreferrer')` |
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| JKSessionJamTrackPlayer.js | mediaSlice.js | dispatch(cleanupJamTrackCallbacks()) in useEffect cleanup | WIRED | Line 9: import. Line 174: cleanup call in useEffect return |
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| JKSessionJamTrackPlayer.js render | downloadState.state | conditional rendering of controls | WIRED | Line 598, 725: Controls hidden during loading states, shown only when 'idle' or 'synchronized' |
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| JKSessionScreen.js | JKSessionJamTrackPlayer | WindowPortal wrapper | WIRED | Line 79: import. Lines 1747-1761: WindowPortal with correct sizing wraps JKSessionJamTrackPlayer |
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### Requirements Coverage
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| Requirement | Status | Blocking Issue |
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|-------------|--------|----------------|
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| JT-01: Loading indicator during processing | SATISFIED | - |
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| JT-02: Proper popup sizing | SATISFIED | - |
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| JT-03: Create custom mix navigation | SATISFIED | - |
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| JT-04: No leaked callbacks | SATISFIED | - |
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### Anti-Patterns Found
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| File | Line | Pattern | Severity | Impact |
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|------|------|---------|----------|--------|
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| - | - | - | - | No TODO/FIXME/placeholder patterns found in modified files |
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### Human Verification Required
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### 1. Visual Sizing Check
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**Test:** Open a JamTrack in session screen, observe the popup window
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**Expected:** Popup fits content without scrollbars, dimensions approximately 460x350
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**Why human:** Visual appearance cannot be verified programmatically
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### 2. Create Custom Mix Flow
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**Test:** Click "create custom mix" link in JamTrack player
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**Expected:** New browser tab opens at /jamtracks/{id} with JamTrack editor
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**Why human:** Browser navigation behavior needs manual verification
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### 3. Loading State Flow
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**Test:** Select a JamTrack that needs downloading
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**Expected:** See loading/download progress first, controls appear only after completion
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**Why human:** Temporal behavior and state transitions need visual confirmation
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### 4. No Console Warnings on Close
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**Test:** Open JamTrack player, close it, check browser console
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**Expected:** No warnings about leaked callbacks or unmounted component state updates
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**Why human:** Console warnings require browser developer tools
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### Gaps Summary
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No gaps found. All must-haves verified:
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1. **Window sizing** - Confirmed width=460,height=350 with scrollbars=no in WindowPortal
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2. **Create custom mix** - Confirmed window.open to /jamtracks/{id} with proper security attributes
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3. **Callback cleanup** - Confirmed cleanupJamTrackCallbacks exists and is called on unmount
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4. **Deferred controls** - Confirmed controls render only when downloadState is 'idle' or 'synchronized'
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---
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*Verified: 2026-02-25T13:47:04Z*
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*Verifier: Claude (gsd-verifier)*
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