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/registry.ts

@@ -32,7 +32,7 @@ export class ChannelRegistry {
   /** Unregister an adapter by name. Calls disconnect() if connected. */
   async unregister(name: string): Promise<void> {
     const adapter = this.adapters.get(name);
-    if (!adapter) return;
+    if (!adapter) {return;}
 
     if (adapter.status === 'connected' || adapter.status === 'connecting') {
       await adapter.disconnect();