feat: implement Phase 5 system handlers (automation, power, recording)

- Implement window control, wallpaper reset, and power management.
- Add Aperture recording wrapper and displayplacer layout control.
- Add self-update logic stub for local/remote sources.
- Register and expose handlers via context bridge.

dist/main/file_utils.js

@@ -40,10 +40,10 @@ const path = __importStar(require("path"));
 function expandPath(filePath) {
     if (!filePath)
         return filePath;
-    if (filePath.startsWith('[home]')) {
-        return path.join(os.homedir(), filePath.replace('[home]', ''));
-    }
-    return filePath;
+    // Resolve all instances of [home] and [tmp] using global regex
+    return filePath
+        .replace(/\[home\]/g, os.homedir())
+        .replace(/\[tmp\]/g, os.tmpdir());
 }
 function getHashedPath(cacheRoot, hash) {
     const expandedRoot = expandPath(cacheRoot);