feat: updated color mode discovery

Author: Alex Holmberg

IMPLEMENTATION_SUMMARY.md

@@ -0,0 +1,238 @@
+# Color Adaptation Implementation Summary
+
+## Overview
+
+This implementation adds intelligent color adaptation to the syncable-cli tool, automatically adjusting terminal colors based on the user's terminal background (dark vs light) to ensure optimal readability across different terminal environments.
+
+## Problem Solved
+
+The original CLI used hardcoded colors optimized for dark terminals, making output difficult to read on light terminal backgrounds. This included both content colors and UI element labels (like "Type:", "Languages:", "Dockerfiles:", etc.) that were hardcoded to bright white, creating accessibility issues and poor user experience for users with light terminal themes.
+
+## Solution Architecture
+
+### Core Components
+
+#### 1. ColorAdapter (`src/analyzer/display/color_adapter.rs`)
+- **Main Logic**: Central color adaptation system
+- **Detection**: Automatic terminal background detection using environment variables and heuristics
+- **Color Schemes**: Dark and Light theme implementations
+- **Global State**: Thread-safe singleton pattern using `OnceLock`
+
+#### 2. ColorScheme Enum
+```rust
+pub enum ColorScheme {
+    Dark,   // Dark background terminals
+    Light,  // Light background terminals
+}
+```
+
+#### 3. CLI Integration (`src/cli.rs`)
+```rust
+pub enum ColorScheme {
+    Auto,   // Auto-detect (default)
+    Dark,   // Force dark theme
+    Light,  // Force light theme
+}
+```
+
+### Detection Methods
+
+1. **COLORFGBG Environment Variable**: Parses `foreground;background` format
+2. **Terminal Program Detection**: Identifies specific terminal applications
+3. **Heuristic Fallback**: Defaults to dark theme when detection fails
+
+### Color Mapping Strategy
+
+#### Dark Theme Colors
+- Headers: `bright_white().bold()`
+- Borders: `bright_blue()`
+- Primary: `yellow()`
+- Secondary: `green()`
+- Languages: `blue()`
+- Frameworks: `magenta()`
+- Databases: `cyan()`
+
+#### Light Theme Colors
+- Headers: `black().bold()`
+- Borders: `blue()`
+- Primary: `red().bold()`
+- Secondary: `green().bold()`
+- Languages: `blue().bold()`
+- Frameworks: `magenta().bold()`
+- Databases: `cyan().bold()`
+
+## Implementation Details
+
+### 1. Color Adapter Methods
+```rust
+impl ColorAdapter {
+    pub fn new() -> Self                    // Auto-detect
+    pub fn with_scheme(scheme: ColorScheme) // Manual override
+    pub fn header_text(&self, text: &str)  // Header styling
+    pub fn primary(&self, text: &str)      // Primary content
+    pub fn language(&self, text: &str)     // Language colors
+    // ... 20+ color methods for different content types
+}
+```
+
+### 2. Global State Management
+```rust
+static COLOR_ADAPTER: std::sync::OnceLock<ColorAdapter> = std::sync::OnceLock::new();
+
+pub fn get_color_adapter() -> &'static ColorAdapter {
+    COLOR_ADAPTER.get_or_init(ColorAdapter::new)
+}
+
+pub fn init_color_adapter(scheme: ColorScheme) {
+    let _ = COLOR_ADAPTER.set(ColorAdapter::with_scheme(scheme));
+}
+```
+
+### 3. CLI Integration
+- Added `--color-scheme` option to analyze command
+- Updated argument parsing in `main.rs` and `lib.rs`
+- Modified handlers to accept and use color scheme parameter
+
+### 4. Matrix View Updates
+Replaced all hardcoded color calls:
+```rust
+// Before
+println!("{}", "HEADER".bright_white().bold());
+box_drawer.add_line("Type:", &arch_type.yellow(), true);
+
+// After  
+let colors = get_color_adapter();
+println!("{}", colors.header_text("HEADER"));
+box_drawer.add_line("Type:", &colors.project_type(&arch_type), true);
+```
+
+### 5. BoxDrawer Label Fix
+Updated BoxDrawer to use color adapter for labels instead of hardcoded bright white:
+```rust
+// Before (in BoxDrawer)
+let formatted_label = if line.label_colored && !line.label.is_empty() {
+    line.label.bright_white().to_string()  // Always white - unreadable on light terminals
+} else {
+    line.label.clone()
+};
+
+// After (in BoxDrawer)
+let formatted_label = if line.label_colored && !line.label.is_empty() {
+    let colors = get_color_adapter();
+    colors.label(&line.label).to_string()  // Adapts to terminal background
+} else {
+    line.label.clone()
+};
+```
+
+## Files Modified
+
+### Core Implementation
+- `src/analyzer/display/color_adapter.rs` (NEW) - Main color adaptation logic
+- `src/analyzer/display/mod.rs` - Module exports and re-exports
+- `src/analyzer/display/matrix_view.rs` - Updated to use color adapter
+
+### CLI Integration
+- `src/cli.rs` - Added ColorScheme enum and CLI option
+- `src/main.rs` - Updated command handling with color scheme parameter
+- `src/lib.rs` - Updated run_command function
+- `src/handlers/analyze.rs` - Updated to accept and initialize color scheme
+
+### Testing and Documentation
+- `examples/test_color_adaptation.rs` (NEW) - Comprehensive color testing
+- `docs/COLOR_ADAPTATION.md` (NEW) - User documentation
+
+## Usage Examples
+
+### Automatic Detection (Default)
+```bash
+sync-ctl analyze my-project
+```
+
+### Manual Override
+```bash
+sync-ctl analyze my-project --color-scheme light
+sync-ctl analyze my-project --color-scheme dark
+sync-ctl analyze my-project --color-scheme auto
+```
+
+### Programmatic Usage
+```rust
+use syncable_cli::analyzer::display::{ColorAdapter, ColorScheme};
+
+// Auto-detect
+let adapter = ColorAdapter::new();
+
+// Manual
+let adapter = ColorAdapter::with_scheme(ColorScheme::Light);
+
+// Apply colors
+println!("{}", adapter.header_text("My Header"));
+```
+
+## Testing Strategy
+
+### 1. Unit Tests
+- Color adapter creation and scheme detection
+- Color method functionality
+- Global state management
+
+### 2. Integration Testing
+- CLI option parsing and propagation
+- Color scheme initialization
+- End-to-end color application
+
+### 3. Visual Testing
+- `test_color_adaptation.rs` example for manual verification
+- Side-by-side comparison of dark/light themes
+- Auto-detection verification
+
+## Backward Compatibility
+
+- **Default behavior**: Auto-detection maintains existing visual experience for most users
+- **API stability**: All existing CLI commands continue to work unchanged
+- **Graceful fallback**: Falls back to dark theme when detection fails
+
+## Performance Considerations
+
+- **Lazy initialization**: Color adapter created only when needed
+- **Singleton pattern**: Single adapter instance per process
+- **Minimal overhead**: Detection runs once at startup
+- **No runtime costs**: Color methods are simple string formatting
+
+## Future Enhancements
+
+### Short Term
+- More terminal program detection
+- Better COLORFGBG parsing
+- Configuration file support
+
+### Long Term
+- High contrast themes
+- Colorblind-friendly schemes
+- Per-command color preferences
+- Dynamic theme switching
+
+## Error Handling
+
+- **Detection failures**: Graceful fallback to dark theme
+- **Invalid schemes**: CLI validation prevents invalid values
+- **Environment issues**: Robust parsing with safe defaults
+
+## Dependencies Added
+
+- None (uses existing `colored` crate)
+- Minimal impact on compilation time
+- No new external dependencies
+
+## Compilation Impact
+
+- Clean compilation after changes
+- Only warnings related to existing unused code
+- No breaking changes to existing functionality
+
+## Deployment Considerations
+
+- **Environment variables**: Users may need to set `COLORFGBG` for better detection
+- **SSH/Remote**: May require manual override in some cases
+- **CI/CD**: Auto-detection works in most automated environments