docs: update electron build instructions and fix electron asset paths

- Add web build prerequisite step to electron build docs
- Update electron run command to use npx
- Fix electron asset loading with improved path handling
- Add request interception for proper asset resolution
- Remove service worker files from electron build
- Improve debug logging for electron builds

BUILDING.md

@@ -44,6 +44,11 @@ To build for web deployment:
 
 To build the desktop application:
 
+0. You must web build first:
+   ```bash
+   npm run build
+   ```
+
 1. Run the Electron build:
    ```bash
    npm run build:electron
@@ -53,7 +58,7 @@ To build the desktop application:
 
 3. To run the desktop app:
    ```bash
-   electron dist-electron
+   npx electron dist-electron
    ```
 
 ## Mobile Builds (Capacitor)