Added comprehensive mobile support for Phase 15 (Polish & Optimization):
**Mobile Layout Enhancements:**
- Track controls now collapsible on mobile with two states:
- Collapsed: minimal controls with expand chevron, R/M/S buttons, horizontal level meter
- Expanded: full height fader, pan control, all buttons
- Track collapse buttons added to mobile view (left chevron for track collapse, right chevron for control collapse)
- Master controls collapse button hidden on desktop (lg:hidden)
- Automation and effects bars now available on mobile layout
- Both bars collapsible with eye/eye-off icons, horizontally scrollable when zoomed
- Mobile vertical stacking: controls → waveform → automation → effects per track
**Bug Fixes:**
- Fixed track controls and waveform container height matching on desktop
- Fixed Modal component prop: isOpen → open in all dialog components
- Fixed TypeScript null check for audioBuffer.duration
- Fixed keyboard shortcut category: 'help' → 'view'
**Technical Improvements:**
- Consistent height calculation using trackHeight variable
- Proper responsive breakpoints with Tailwind (sm:640px, lg:1024px)
- Progressive disclosure pattern for mobile controls
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Fixed critical bug where ImportDialog was always rendered regardless of
the open prop value. The component interface didn't match the actual
implementation, causing it to appear on page load.
Changes:
- Added `open` prop to ImportDialogProps interface
- Added early return when `open` is false to prevent rendering
- Renamed `onCancel` to `onClose` to match Track component usage
- Made fileName, sampleRate, and channels optional props
- Dialog now only appears when explicitly opened by user action
This fixes the issue where the dialog appeared immediately on page load
when loading a saved project.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Added full export/import functionality for projects:
Export Features:
- Export button for each project in Projects dialog
- Downloads project as JSON file with all data
- Includes tracks, audio buffers, effects, automation, settings
- Filename format: {project_name}_{timestamp}.json
Import Features:
- Import button in Projects dialog header
- File picker for .json files
- Automatically generates new project ID to avoid conflicts
- Appends "(Imported)" to project name
- Preserves all project data
This enables:
- Backup of projects outside the browser
- Sharing projects with collaborators
- Migration between computers/browsers
- Version snapshots at different stages
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Added complete project save/load system using IndexedDB:
**New Files:**
- `lib/storage/db.ts` - IndexedDB database schema and operations
- ProjectMetadata interface for project metadata
- SerializedAudioBuffer and SerializedTrack for storage
- Database initialization with projects object store
- Audio buffer serialization/deserialization functions
- CRUD operations for projects
- `lib/storage/projects.ts` - High-level project management service
- Save/load project state with tracks and settings
- List all projects sorted by last updated
- Delete and duplicate project operations
- Track serialization with proper type conversions
- Audio buffer and effect chain handling
- `components/dialogs/ProjectsDialog.tsx` - Project list UI
- Grid view of all projects with metadata
- Project actions: Open, Duplicate, Delete
- Create new project button
- Empty state with call-to-action
- Confirmation dialog for deletions
**Key Features:**
- IndexedDB stores complete project state (tracks, audio buffers, settings)
- Efficient serialization of AudioBuffer channel data
- Preserves all track properties (effects, automation, volume, pan)
- Sample rate and duration tracking
- Created/updated timestamps
- Type-safe with full TypeScript support
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Removed the non-standard FLAC export option which was causing import issues:
**Problem:**
- "FLAC" export was actually a custom compressed WAV format
- Used fflate (DEFLATE compression) instead of real FLAC encoding
- Files couldn't be imported back or opened in other software
- No browser-compatible FLAC encoder library exists
**Changes:**
- Removed FLAC from export format options (WAV and MP3 only)
- Removed FLAC quality slider from ExportDialog
- Removed audioBufferToFlac function reference
- Updated ExportSettings interface to only include 'wav' | 'mp3'
- Simplified bit depth selector (WAV only instead of WAV/FLAC)
- Updated format descriptions to clarify lossy vs lossless
**Export formats now:**
- ✅ WAV - Lossless, Uncompressed (16/24/32-bit)
- ✅ MP3 - Lossy, Compressed (128/192/256/320 kbps)
Users can now successfully export and re-import their audio!
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implemented Phase 11.3 - Export Regions:
- Added export scope selector in ExportDialog
- Entire Project: Mix all tracks into single file
- Selected Region: Export only the selected region (disabled if no selection)
- Individual Tracks: Export each track as separate file
- Updated ExportSettings interface with scope property
- Refactored handleExport to support all three export modes:
- Project mode: Mix all tracks (existing behavior)
- Selection mode: Extract selection from all tracks and mix
- Tracks mode: Loop through tracks and export separately with sanitized filenames
- Added hasSelection prop to ExportDialog to enable/disable selection option
- Created helper function convertAndDownload to reduce code duplication
- Selection mode uses extractBufferSegment for precise region extraction
- Track names are sanitized for filenames (remove special characters)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implemented Phase 11.1 export format support:
- Added MP3 export using lamejs library
- Added FLAC export using fflate DEFLATE compression
- Updated ExportDialog with format selector and format-specific options
- MP3: bitrate selector (128/192/256/320 kbps)
- FLAC: compression quality slider (0-9)
- WAV: bit depth selector (16/24/32-bit)
- Updated AudioEditor to route export based on selected format
- Created TypeScript declarations for lamejs
- Fixed AudioStatistics to use audioBuffer instead of buffer property
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implemented comprehensive automation recording system for volume, pan, and effect parameters:
- Added automation recording modes:
- Write: Records continuously during playback when values change
- Touch: Records only while control is being touched/moved
- Latch: Records from first touch until playback stops
- Implemented value change detection (0.001 threshold) to prevent infinite loops
- Fixed React setState-in-render errors by:
- Using queueMicrotask() to defer state updates
- Moving lane creation logic to useEffect
- Properly memoizing touch handlers with useMemo
- Added proper value ranges for effect parameters:
- Frequency: 20-20000 Hz
- Q: 0.1-20
- Gain: -40-40 dB
- Enhanced automation lane auto-creation with parameter-specific ranges
- Added touch callbacks to all parameter controls (volume, pan, effects)
- Implemented throttling (100ms) to avoid excessive automation points
Technical improvements:
- Used tracksRef and onRecordAutomationRef to ensure latest values in animation loops
- Added proper cleanup on playback stop
- Optimized recording to only trigger when values actually change
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
