style: auto-fix ESLint issues (curly braces and formatting)

- Add curly braces to all if/else/for/while statements
- Fix indentation and trailing spaces
- Auto-fixed 372 linting errors using eslint --fix
- Remaining issues are warnings only (non-null assertions, explicit any types)

src/channels/pairing.ts

@@ -83,7 +83,7 @@ export class PairingManager {
     const normalizedCode = code.trim().toUpperCase();
     const pending = this.pendingCodes.get(normalizedCode);
 
-    if (!pending) return false;
+    if (!pending) {return false;}
     if (Date.now() > pending.expiresAt) {
       this.pendingCodes.delete(normalizedCode);
       return false;