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/gateway/ui/lib/ws-client.js

@@ -165,18 +165,18 @@ export class FlynnClient {
 
     const handle = {
       on(event, callback) {
-        if (!events.has(event)) events.set(event, []);
+        if (!events.has(event)) {events.set(event, []);}
         events.get(event).push(callback);
         return handle;
       },
       result: new Promise((resolve, reject) => {
         // Auto-wire done/error to resolve/reject the promise
-        if (!events.has('done')) events.set('done', []);
+        if (!events.has('done')) {events.set('done', []);}
         events.get('done').push((data) => {
           this._listeners.delete(id);
           resolve(data);
         });
-        if (!events.has('error')) events.set('error', []);
+        if (!events.has('error')) {events.set('error', []);}
         events.get('error').push((data) => {
           this._listeners.delete(id);
           reject(new Error(data.message || 'Agent error'));