When launching the script, actually source the right things.

If I try to launch it via
~/projects/audiogame-manager/audiogame-manager.sh it will crap out
because it isn't able to source its include files; it erroneously
thinks they're in the current directory as I am, which is no exactly
true unless I physically go to the audiogame manager directory. This
also fixes launching from the desktop icon.

CLAUDE.md

@@ -104,7 +104,10 @@ for f in .includes/*.sh; do bash -n "$f"; done
   - Examples: `get_wine_bottle()`, `process_launcher_flags()`, `download_file()`
   - Never use: `getWineBottle()`, `processLauncherFlags()`, `downloadFile()`
 - **Shebang**: Use `#!/bin/bash` for all bash scripts
-- **Sourcing pattern**: Use modular sourcing: `. "${0%/*}/.includes/file.sh"`
+- **Sourcing pattern**:
+  - **Main script** (`audiogame-manager.sh`): Use `source "${scriptDir}/.includes/file.sh"` (scriptDir is defined at line 4)
+  - **Subdirectory scripts** (game-scripts/, wine/, speech/): Use `source "${0%/*}/../.includes/file.sh"`
+  - **CRITICAL**: Never use relative paths like `source .includes/file.sh` - these fail when the current working directory differs from the script location
 - **Indentation**: Use consistent indentation (tabs or spaces, follow existing file patterns)
 - When fixing code, correct any indentation inconsistencies to match the established style
 
@@ -194,6 +197,7 @@ The project has undergone a significant refactor to modularize functionality. **
 2. **Variable scope**: Added `export game` in main script so `.includes/bottle.sh` functions can access it
 3. **Installation logic**: Completed the `-I` option implementation for noninteractive game installation
 4. **Code deduplication**: Removed duplicate `check_news` and launcher logic from `update.sh`
+5. **Include sourcing**: Fixed all relative path sourcing (e.g., `source .includes/bottle.sh`) to use `${scriptDir}` to ensure desktop launchers and execution from any working directory works correctly
 
 ### Critical Variable Handling
 - **`$game` variable**: Must be exported when set (line 489 in main script) for bottle.sh functions to work