# Project Milestones: JamKazam Media Features Modernization

## v1.6 Media Features Polish (Shipped: 2026-03-03)

**Delivered:** Fixed JamTrack loading sequence, window sizing, and navigation; enabled backing track sync to session screen; prevented opening multiple media players simultaneously.

**Phases completed:** 26-27 (5 plans total)

**Key accomplishments:**
- Fixed JamTrack loading sequence - defer UI until backend processing completes
- Fixed JamTrack player window sizing (460x350) without scrollbars
- Implemented "Create custom mix" navigation to JamTrack editor in new tab
- Added callback cleanup to prevent memory leaks in JamTrack
- Backing tracks now sync to session screen when opened
- Added async cleanup to prevent unmount state warnings
- Prevented opening multiple media players simultaneously

**Stats:**
- 44 files modified
- +5,210 / -403 lines of JavaScript/React
- 2 phases, 5 plans
- 7 days (2026-02-25 → 2026-03-03)

**Git range:** `eab0b0d19` → `51f7cb105`

**What's next:** To be determined in next milestone planning

---

## v1.5 Fix Session Recording (Shipped: 2026-02-25)

**Delivered:** Fixed session recording crash and memory leaks, enabling stable recording sessions of 15+ minutes.

**Phases completed:** 24-25 (2 plans total)

**Key accomplishments:**
- Fixed C++ client crash on Start Recording (JSON parsing fix in rest.js)
- Added timer cleanup for recording hook (waitingOnStopTimer properly cleared on unmount)
- Implemented conditional callback cleanup for window.JK (prevents race conditions)
- Added async operation guards with ignore flag pattern
- Created UAT checklist for memory verification (25-UAT.md)
- User verified 15+ minute recording stability with no memory growth

**Stats:**
- 18 files modified
- +1,103 / -107 lines of JavaScript/React
- 2 phases, 2 plans
- 6 days (2026-02-19 → 2026-02-25)

**Git range:** `1512f646e` → `2292cb4fd`

**What's next:** To be determined in next milestone planning

---

## v1.4 Memory Leak Prevention (Shipped: 2026-02-10)

**Delivered:** Fixed memory leaks causing session screen freezes after ~10 minutes through comprehensive audit and cleanup patterns for VU meters, chat, and session callbacks.

**Phases completed:** 19-23 (5 plans total)

**Key accomplishments:**
- Comprehensive memory leak audit identifying unbounded vuStates and chat message accumulation as primary leak sources
- VU meter state cleanup with removeVuState function integrated with mixer lifecycle
- Chat memory bounds (MAX_MESSAGES = 500 per channel) with session leave cleanup
- Session callback cleanup with useRef pattern for reliable unregistration
- User verified 15+ minute session stability with no freezes

**Stats:**
- 4 files modified
- 78 lines of JavaScript (net)
- 5 phases, 5 plans, 12 tasks
- 3 days (2026-02-08 → 2026-02-10)

**Git range:** `audit(19-01)` → `docs(23-01)`

**What's next:** To be determined in next milestone planning

---

## v1.3 Session Settings Tests (Shipped: 2026-02-08)

**Delivered:** Test coverage for Session Settings modal to enable confident changes.

**Phases completed:** 17-18 (2 plans total)

**Key accomplishments:**
- Jest unit tests for JKSessionSettingsModal component
- Playwright integration tests for Settings modal user flows
- Coverage for critical paths: save, cancel, validation, errors

**Stats:**
- 2 phases, 2 plans
- 1 day (2026-02-08)

**Git range:** `feat(17-01)` → `docs(18-01)`

**What's next:** Memory leak investigation (v1.4)

---

## v1.2 Session Attachments (Shipped: 2026-02-07)

**Delivered:** File attachment capability for music sessions, allowing users to upload files and share them in real-time via the chat window.

**Phases completed:** 12-16 (11 plans total)

**Key accomplishments:**
- Attach button in session toolbar with OS file dialog integration
- File validation (10 MB limit, approved file types)
- Upload progress indicator in chat window
- Attachment display in chat with metadata and clickable links
- Real-time synchronization via WebSocket broadcast
- Error handling with toast notifications for all failure cases
- Unread badge persistence across page reloads

**Stats:**
- 12 files created/modified
- 1,868 lines of JavaScript/React
- 5 phases, 11 plans
- 5 days from Phase 12 start to ship

**Git range:** `docs(12)` → `docs(16)`

**What's next:** To be determined in next milestone planning

---

## v1.1 Music Session Chat (Shipped: 2026-01-31)

**Delivered:** Real-time chat functionality for music sessions with modeless window, message history, and read/unread tracking.

**Phases completed:** 6-11 (13 plans total)

**Key accomplishments:**
- Modeless chat window with WindowPortal
- Real-time message delivery via WebSocket
- Message history with REST API integration
- Unread badge with localStorage persistence
- Message composition with optimistic updates

**Git range:** `docs(06)` → `docs(11)`

---

## v1.0 Media Players (Shipped: 2026-01-14)

**Delivered:** Backing Track and JamTrack players migrated from legacy jQuery/CoffeeScript to modern React.

**Phases completed:** 1-5 (12 plans total)

**Key accomplishments:**
- Backing Track player with time display and seek controls
- JamTrack player with mixdown selection
- Real-time playback monitoring via polling
- Volume and loop controls

**Git range:** Initial → `docs(05)`

---
