removed any mention of Windows or MacOS support since there are no plans to support them

rewrite/CLAUDE.md

@@ -59,8 +59,8 @@ The rewrite is in early stages. The original C codebase in `../legacy/` should b
 The Rust rewrite should maintain the modular architecture of the original:
 
 **Core modules to implement:**
-- Gamma adjustment backends (DRM, RANDR, VidMode, Quartz, Windows GDI)
-- Location providers (manual, GeoClue2, CoreLocation)
+- Gamma adjustment backends (DRM, RANDR, VidMode)
+- Location providers (manual, GeoClue2)
 - Solar position calculations
 - Color temperature to RGB conversion
 - Configuration parsing
@@ -105,20 +105,19 @@ Follow standard Rust conventions:
 
 ## Platform Support
 
-The original supports:
-- **Linux:** DRM (TTY), RANDR (X11 multi-output), VidMode (X11 legacy)
-- **macOS:** Quartz
-- **Windows:** GDI
+This rewrite targets Linux only:
+- **DRM:** Direct Rendering Manager (TTY/framebuffer)
+- **RANDR:** X11 RandR extension (multi-output support, preferred)
+- **VidMode:** X11 VidMode extension (legacy, single output)
 
-Each platform requires different system APIs for gamma manipulation. Conditional compilation via `cfg` attributes will be needed.
+Each method requires different system APIs for gamma manipulation. Conditional compilation via `cfg` attributes will be needed for feature detection.
 
 ## Configuration
 
-The original uses INI-format config files at:
-- Linux/macOS: `~/.config/redshift.conf`
-- Windows: `%USERPROFILE%\AppData\Local\redshift.conf`
+Configuration files should be in INI format at:
+- `~/.config/redshift.conf` (XDG standard location)
 
-Maintain this format for compatibility.
+Maintain this format for compatibility with the original.
 
 ## Testing Strategy
 

rewrite/README.md

@@ -90,26 +90,23 @@ src/
 **Gamma Methods** ([gamma.rs](src/gamma.rs))
 - Trait-based design for multiple adjustment methods
 - Currently implements dummy method (prints temperature, no display changes)
-- Ready for additional methods: DRM, RandR, VidMode, Quartz, WinGDI
+- Ready for additional methods: DRM, RandR, VidMode
 
 **Location Providers** ([location.rs](src/location.rs))
 - Trait-based design for multiple location sources
 - Currently implements manual provider (user-specified lat/lon)
-- Ready for additional providers: GeoClue2, CoreLocation
+- Ready for additional provider: GeoClue2
 
 ## Next Steps
 
 To complete the rewrite, the following work remains:
 
-1. **Real Gamma Methods** - Port platform-specific gamma adjustment methods:
-   - DRM (Linux TTY)
-   - RandR (X11, preferred)
-   - VidMode (X11, legacy)
-   - Quartz (macOS)
-   - WinGDI (Windows)
-2. **Additional Location Providers** - Port automatic location detection:
-   - GeoClue2 (Linux)
-   - CoreLocation (macOS)
+1. **Real Gamma Methods** - Port Linux gamma adjustment methods:
+   - DRM (Direct Rendering Manager for TTY/framebuffer)
+   - RandR (X11 RandR extension, preferred, multi-output)
+   - VidMode (X11 VidMode extension, legacy, single output)
+2. **Additional Location Provider** - Port automatic location detection:
+   - GeoClue2 (Linux location service)
 3. **Configuration File Support** - Parse and apply INI-style config files
 4. **Signal Handling** - Respond to SIGUSR1 (toggle), SIGINT/SIGTERM (restore & exit)
 5. **Hook Scripts** - Execute user scripts on period changes