feat: make AGS colorshell configuration fully declarative

- Add complete colorshell v2.0.3 configuration to home/ags-config/
- Disable runner plugin and NightLight tile (incompatible with NixOS)
- Customize SCSS with full opacity (no transparency)
- Add dark pale blue color scheme in home/pywal-colors/
- Configure Papirus-Dark icon theme via home-manager
- Make ~/.config/ags/ immutable and managed by Nix store
- Auto-deploy pywal colors to ~/.cache/wal/colors.json

All AGS configuration is now reproducible and version controlled.

AGS-CONFIG.md

@@ -0,0 +1,94 @@
+# AGS Colorshell Configuration - Fully Declarative
+
+Your AGS configuration with colorshell is now **completely reproducible** and managed by your Nix flake.
+
+## What's Now Declarative
+
+### ✅ In Your Flake (`~/nix-flake/`)
+
+1. **AGS Configuration** (`home/ags-config/`)
+   - Complete colorshell source code
+   - Modified SCSS with full opacity (`resources/styles/_colors.scss`, `_bar.scss`)
+   - Disabled NightLight tile (`window/control-center/widgets/tiles/index.tsx`)
+   - Disabled runner plugin (`app.ts`)
+   - Pre-compiled gresource file (`resources.gresource`)
+   - All module modifications (uwsm, wallpaper, etc.)
+
+2. **Color Scheme** (`home/pywal-colors/colors.json`)
+   - Dark pale blue theme
+   - Full opacity (alpha: 100)
+   - Automatically deployed to `~/.cache/wal/colors.json`
+
+3. **Nix Configuration**
+   - AGS v3 with all Astal packages (`flake.nix`)
+   - Home-manager module (`home/ags.nix`)
+   - Icon themes (Papirus-Dark)
+   - GTK settings
+   - Hyprland integration
+
+## Configuration Structure
+
+```
+~/nix-flake/
+├── home/
+│   ├── ags-config/          # Complete colorshell configuration
+│   │   ├── app.ts           # Modified (runner disabled, DEVEL constant)
+│   │   ├── modules/         # Modified modules
+│   │   ├── resources/       # SCSS with full opacity
+│   │   ├── resources.gresource  # Pre-compiled resources
+│   │   └── window/          # Modified windows (NightLight disabled)
+│   ├── pywal-colors/
+│   │   └── colors.json      # Dark pale blue theme
+│   └── ags.nix              # AGS home-manager configuration
+└── flake.nix                # AGS v3 + Astal inputs
+```
+
+## Making Changes
+
+### To Modify Colors
+
+1. Edit `home/pywal-colors/colors.json`
+2. Rebuild: `sudo nixos-rebuild switch --flake .#desktop`
+
+### To Modify SCSS Styles
+
+1. Edit files in `home/ags-config/resources/styles/`
+2. Rebuild gresource: 
+   ```bash
+   cd ~/nix-flake/home/ags-config
+   nix-shell -p glib.dev --run "glib-compile-resources --sourcedir=resources resources.gresource.xml --target=resources.gresource"
+   ```
+3. Commit changes: `git add home/ags-config/resources.gresource`
+4. Rebuild: `sudo nixos-rebuild switch --flake .#desktop`
+
+### To Modify AGS Code
+
+1. Edit TypeScript files in `home/ags-config/`
+2. Commit changes: `git add home/ags-config/`
+3. Rebuild: `sudo nixos-rebuild switch --flake .#desktop`
+
+## Benefits
+
+- 🔒 **Immutable**: `~/.config/ags/` is read-only and owned by root
+- 📦 **Reproducible**: Exact same configuration on any machine
+- 🔄 **Version Controlled**: All changes tracked in git
+- 🧹 **Clean**: No manual file management in home directory
+- ⚡ **Atomic**: Changes applied all-at-once, rollback-able
+
+## Current Customizations
+
+- ✅ Colorshell v2.0.3 (without runner/launcher)
+- ✅ Dark pale blue color scheme
+- ✅ Full opacity (no transparency)
+- ✅ NightLight tile disabled (was trying to use hyprctl)
+- ✅ Papirus-Dark icon theme
+- ✅ All Astal modules integrated
+- ✅ Pywal colors configured
+
+## Testing Reproducibility
+
+To verify everything is declarative, you can:
+
+1. Delete `~/.config/ags/` and `~/.cache/wal/`
+2. Run `sudo nixos-rebuild switch --flake .#desktop`
+3. Everything will be restored exactly as configured!