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/frontends/tui/components/App.tsx

@@ -21,9 +21,9 @@ function formatToolName(name: string): string {
 
 /** Format tool args as a compact, readable summary. */
 function formatToolArgs(args: unknown): string {
-  if (!args || typeof args !== 'object') return '';
+  if (!args || typeof args !== 'object') {return '';}
   const entries = Object.entries(args as Record<string, unknown>);
-  if (entries.length === 0) return '';
+  if (entries.length === 0) {return '';}
   const parts = entries.map(([key, value]) => {
     if (typeof value === 'string') {
       const display = value.length > 50 ? value.slice(0, 47) + '...' : value;
@@ -71,7 +71,7 @@ export function App({
   // This replaces the process.stdout.write callback (which corrupts Ink rendering)
   // with one that updates React state to show tool activity in the streaming area.
   useEffect(() => {
-    if (!agent) return;
+    if (!agent) {return;}
 
     const handleToolEvent = (event: ToolUseEvent) => {
       if (event.type === 'start') {
@@ -137,7 +137,7 @@ export function App({
 
   const handleSubmit = useCallback(async (value: string) => {
     const command = parseCommand(value);
-    if (!command) return;
+    if (!command) {return;}
 
     setInput('');
 
@@ -212,7 +212,7 @@ export function App({
         return;
 
       case 'transfer': {
-        const xferMsg: Message = { role: 'assistant', content: `Transfer not supported in fullscreen mode.` };
+        const xferMsg: Message = { role: 'assistant', content: 'Transfer not supported in fullscreen mode.' };
         const xferWithTs = session.addMessage(xferMsg);
         setMessages(prev => [...prev, xferWithTs]);
         return;
@@ -222,7 +222,7 @@ export function App({
         break; // Continue to message handling
     }
 
-    if (command.type !== 'message' || isStreaming) return;
+    if (command.type !== 'message' || isStreaming) {return;}
 
     // Add user message to UI (and session if no agent — agent adds it internally)
     const userMessage: Message = { role: 'user', content: command.content };