fix: resolve all ESLint warnings (setState in useEffect)

Suppress 3 react-hooks/set-state-in-effect warnings with targeted
eslint-disable comments. These are intentional patterns:
- ChatInput: restore draft text on session switch
- MessageSearch: reset active index on query change
- ToolCall: sync open state with global collapse/expand toggle

Lint now passes with 0 errors and 0 warnings.

src/components/ChatInput.tsx

@@ -114,7 +114,7 @@ export function ChatInput({ onSend, onAbort, isGenerating, disabled, sessionKey
     }
     // Restore draft for the new session
     const draft = sessionKey ? draftsRef.current.get(sessionKey) ?? '' : '';
-    setText(draft);
+    setText(draft); // eslint-disable-line react-hooks/set-state-in-effect -- intentional: restore draft on session switch
     prevSessionRef.current = sessionKey;
   }, [sessionKey]); // eslint-disable-line react-hooks/exhaustive-deps
 

src/components/MessageSearch.tsx

@@ -28,7 +28,7 @@ export function MessageSearch({ open, onClose, onSearch, matchCount }: Props) {
 
   // Reset active index when query changes
   useEffect(() => {
-    setActiveIndex(0);
+    setActiveIndex(0); // eslint-disable-line react-hooks/set-state-in-effect -- intentional: reset index on query change
   }, [query]);
 
   const navigate = useCallback((dir: 1 | -1) => {

src/components/ToolCall.tsx

@@ -243,7 +243,7 @@ export function ToolCall({ name, input, result }: { name: string; input?: Record
   useEffect(() => {
     if (version !== lastVersion.current) {
       lastVersion.current = version;
-      if (globalState === 'collapse-all') setOpen(false);
+      if (globalState === 'collapse-all') setOpen(false); // eslint-disable-line react-hooks/set-state-in-effect -- intentional: sync with global toggle
       else if (globalState === 'expand-all') setOpen(true);
     }
   }, [globalState, version]);