docs: add comprehensive TODO list for future improvements

- Organized by priority (P1-P6)
- Includes effort estimates and file references
- Covers platform fixes, performance, UI/UX, and architecture
- Defines implementation schedule and success metrics

Author: biancode

TODO.md

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+# SourceGit Iniationware Edition - Development TODO
+
+## Overview
+This document tracks planned improvements and features for the SourceGit Iniationware Edition. Items are organized by priority and estimated effort.
+
+---
+
+## 🔴 Priority 1 - Critical Fixes (Immediate)
+
+### Platform-Specific Issues
+
+#### Linux
+- [ ] **Fix Desktop File MimeType** [`build/resources/_common/applications/sourcegit.desktop`]
+  - Remove incorrect `MimeType=inode/directory` causing unwanted app launches
+  - Issue: #1650
+  - Effort: 15 minutes
+
+#### macOS
+- [ ] **Fix ARM64 ZIP Release Build** [`build-macos-signed.sh`]
+  - ARM64 ZIP releases potentially broken
+  - Issue: #1723
+  - Test on Apple Silicon hardware
+  - Effort: 2 hours
+
+### Authentication & Security
+
+- [ ] **GPG Signing Support Enhancement** [`src/Commands/Commit.cs`]
+  - Add GPG_TTY environment variable detection
+  - Provide clear error messages when GPG signing fails
+  - Issue: #1645
+  - Effort: 1 hour
+
+- [ ] **SSH Agent Authentication Fix** [`src/Commands/Command.cs`]
+  - Linux SSH agent broken since v2025.28
+  - Review SSH_AUTH_SOCK handling
+  - Issue: #1670
+  - Effort: 2 hours
+
+---
+
+## 🟡 Priority 2 - High Impact Features (Next Sprint)
+
+### Merge Conflict Resolution
+
+- [ ] **Built-in 3-Way Merge Editor**
+  - Create new view: `src/Views/MergeConflictResolver.axaml`
+  - Implement conflict parser: `src/Models/ConflictParser.cs`
+  - Add inline editing capabilities
+  - Reference: Similar to GitKraken's conflict resolution
+  - Effort: 2 weeks
+
+### Enhanced Diff Viewer
+
+- [ ] **Minimap Navigation** [`src/Views/DiffView.axaml.cs`]
+  - Add scrollable minimap showing file overview
+  - Highlight changed regions in minimap
+  - Click-to-navigate functionality
+  - Effort: 3 days
+
+- [ ] **Word-Level Diff Highlighting** [`src/Views/TextDiffView.axaml.cs`]
+  - Implement word-by-word comparison algorithm
+  - Add inline highlighting for changed words
+  - Effort: 2 days
+
+- [ ] **Auto-Jump to First Change** [`src/Views/DiffView.axaml.cs`]
+  - When "Show full file" is enabled, auto-scroll to first diff
+  - Issue: #1655
+  - Effort: 4 hours
+
+### Advanced Search System
+
+- [ ] **Global Repository Search**
+  - New ViewModel: `src/ViewModels/GlobalSearch.cs`
+  - Search across all registered repositories
+  - Index commit messages, file names, and content
+  - Effort: 1 week
+
+- [ ] **Full-Text Commit Search** [`src/Commands/QueryCommits.cs`]
+  - Implement commit message indexing
+  - Add search filters (author, date, branch)
+  - Effort: 3 days
+
+---
+
+## 🟢 Priority 3 - Performance Optimizations
+
+### Memory Management
+
+- [ ] **LRU Cache for Commit Graph** [`src/ViewModels/Repository.cs:2429-2432`]
+  - Replace basic caching with LRU implementation
+  - Add memory pressure detection
+  - Implement size limits and eviction policies
+  - Effort: 2 days
+
+- [ ] **Performance Logging to File** [`src/Models/PerformanceMonitor.cs:203-204`]
+  - Implement optional file-based logging
+  - Add log rotation and size limits
+  - Create performance analysis tools
+  - Effort: 1 day
+
+### macOS Optimizations
+
+- [ ] **FSEvents Integration** [`src/Native/MacOS.cs`]
+  - Replace FileSystemWatcher with native FSEvents
+  - Better performance for large repositories
+  - Create new class: `src/Native/MacOSFileWatcher.cs`
+  - Effort: 1 week
+
+- [ ] **Apple Silicon Detection & Optimization**
+  ```csharp
+  // Add to src/Native/MacOS.cs
+  public bool IsAppleSilicon() => 
+      RuntimeInformation.ProcessArchitecture == Architecture.Arm64;
+  ```
+  - Optimize Git path detection for ARM64
+  - Add ARM64-specific process optimizations
+  - Effort: 2 days
+
+### Async Operations
+
+- [ ] **Convert Blocking Operations to Async** [`src/ViewModels/`]
+  - Audit all ViewModels for blocking operations
+  - Convert to async/await with ConfigureAwait(false)
+  - Priority files:
+    - `Repository.cs`
+    - `WorkingCopy.cs`
+    - `Histories.cs`
+  - Effort: 3 days
+
+---
+
+## 🔵 Priority 4 - UI/UX Enhancements
+
+### Drag & Drop Support
+
+- [ ] **Commit Cherry-Pick via Drag** [`src/Views/Histories.axaml.cs`]
+  - Enable dragging commits between branches
+  - Visual feedback during drag operation
+  - Effort: 3 days
+
+- [ ] **File Operations Drag & Drop** [`src/Views/WorkingCopy.axaml.cs`]
+  - Drag files to stage/unstage
+  - Create patches via drag to desktop
+  - Effort: 2 days
+
+### Interactive Git Graph
+
+- [ ] **Graph Filtering** [`src/Views/Histories.axaml`]
+  - Filter by author
+  - Filter by date range
+  - Filter by branch
+  - Effort: 3 days
+
+- [ ] **Inline Commit Search** [`src/Views/Histories.axaml`]
+  - Add search box directly in graph view
+  - Real-time filtering as you type
+  - Effort: 2 days
+
+### Theme System
+
+- [ ] **High Contrast Mode**
+  - Create new theme: `src/Resources/Themes/HighContrast.axaml`
+  - WCAG 2.1 AA compliance
+  - Effort: 2 days
+
+- [ ] **Custom Theme Editor**
+  - New view: `src/Views/ThemeEditor.axaml`
+  - Live preview of theme changes
+  - Export/import theme files
+  - Effort: 1 week
+
+---
+
+## 🟣 Priority 5 - Advanced Features
+
+### Repository Templates
+
+- [ ] **Template System** 
+  - New model: `src/Models/RepositoryTemplate.cs`
+  - Predefined templates for common project types
+  - Custom template creation
+  - Effort: 1 week
+
+- [ ] **Pre-commit Hook Management**
+  - UI for managing Git hooks
+  - Template library for common hooks
+  - New view: `src/Views/GitHooksManager.axaml`
+  - Effort: 3 days
+
+### Team Collaboration
+
+- [ ] **Pull Request Preview** (Read-Only)
+  - Fetch PR data from GitHub/GitLab APIs
+  - Display PR status and reviews
+  - New ViewModel: `src/ViewModels/PullRequestViewer.cs`
+  - Effort: 2 weeks
+
+- [ ] **Enhanced Issue Tracker Integration**
+  - Auto-link issues in commit messages
+  - Show issue status inline
+  - Effort: 1 week
+
+### Git Advanced Features
+
+- [ ] **Git Worktree Enhanced UI**
+  - Dedicated worktree management view
+  - Visual worktree switching
+  - New view: `src/Views/WorktreeManager.axaml`
+  - Effort: 1 week
+
+- [ ] **Partial Clone Support**
+  - UI for configuring partial clones
+  - Visual indicators for partial repositories
+  - Effort: 3 days
+
+- [ ] **Git LFS Improvements**
+  - Better visual indicators for LFS files
+  - LFS file size warnings
+  - Batch LFS operations
+  - Effort: 3 days
+
+---
+
+## 🟤 Priority 6 - Architecture & Long-term
+
+### Plugin System
+
+- [ ] **Plugin Architecture Foundation**
+  - Design plugin API
+  - Create plugin loader: `src/Plugins/PluginManager.cs`
+  - Plugin manifest format
+  - Effort: 3 weeks
+
+- [ ] **Example Plugins**
+  - GitLab integration plugin
+  - Custom theme plugin
+  - External tool integration plugin
+  - Effort: 2 weeks
+
+### Code Quality
+
+- [ ] **Error Handling Standardization**
+  - Create centralized error handler
+  - Structured logging system
+  - User-friendly error messages
+  - Effort: 1 week
+
+- [ ] **Unit Test Coverage**
+  - Add tests for critical components
+  - Target 80% coverage for new code
+  - Set up CI/CD test automation
+  - Effort: Ongoing
+
+---
+
+## Implementation Schedule
+
+### Sprint 1 (Week 1-2)
+- All Priority 1 fixes
+- Start Built-in Merge Editor design
+- Begin Enhanced Diff Viewer work
+
+### Sprint 2 (Week 3-4)
+- Complete Enhanced Diff Viewer
+- Implement Advanced Search foundation
+- Start Memory Management improvements
+
+### Sprint 3 (Week 5-6)
+- Complete Merge Conflict Resolution
+- macOS optimizations
+- Async operations conversion
+
+### Sprint 4 (Week 7-8)
+- UI/UX enhancements
+- Drag & Drop support
+- Theme system improvements
+
+### Future Sprints
+- Advanced features
+- Plugin system
+- Team collaboration features
+
+---
+
+## Success Metrics
+
+- **Performance**: 30% reduction in memory usage for large repos
+- **Stability**: 90% reduction in crash reports
+- **Features**: Feature parity with GitKraken for core functionality
+- **User Satisfaction**: 4.5+ star rating on package managers
+
+---
+
+## Notes
+
+- Items marked with issue numbers reference upstream SourceGit issues
+- Effort estimates assume single developer working full-time
+- Priority can be adjusted based on user feedback and telemetry
+- This list will be updated as items are completed or new issues discovered
+
+---
+
+Last Updated: 2025-09-09