fix: add from __future__ import annotations to workspace_manager.py

Fixes NameError: ToolInstance not defined at runtime because
type annotations are evaluated at class definition time.
Deferring annotation evaluation with __future__ annotations
keeps TYPE_CHECKING imports from causing runtime crashes.

Also includes ruff formatting cleanup on workspace-related files.

apps/web/src/hooks/use-workspaces.ts

@@ -5,33 +5,38 @@ import { listWorkspaces } from "../api/workspaces";
 import type { Workspace } from "../types/workspace";
 
 export interface UseWorkspacesResult {
-  workspaces: Workspace[];
-  loading: boolean;
-  error: string | null;
-  refresh: () => Promise<void>;
+	workspaces: Workspace[];
+	loading: boolean;
+	error: string | null;
+	refresh: () => Promise<void>;
 }
 
-export function useWorkspaces(projectId: string, repoId: string): UseWorkspacesResult {
-  const [workspaces, setWorkspaces] = useState<Workspace[]>([]);
-  const [loading, setLoading] = useState(true);
-  const [error, setError] = useState<string | null>(null);
+export function useWorkspaces(
+	projectId: string,
+	repoId: string,
+): UseWorkspacesResult {
+	const [workspaces, setWorkspaces] = useState<Workspace[]>([]);
+	const [loading, setLoading] = useState(true);
+	const [error, setError] = useState<string | null>(null);
 
-  const refresh = useCallback(async () => {
-    setLoading(true);
-    setError(null);
-    try {
-      const data = await listWorkspaces(projectId, repoId);
-      setWorkspaces(data);
-    } catch (err) {
-      setError(err instanceof Error ? err.message : "Failed to load workspaces");
-    } finally {
-      setLoading(false);
-    }
-  }, [projectId, repoId]);
+	const refresh = useCallback(async () => {
+		setLoading(true);
+		setError(null);
+		try {
+			const data = await listWorkspaces(projectId, repoId);
+			setWorkspaces(data);
+		} catch (err) {
+			setError(
+				err instanceof Error ? err.message : "Failed to load workspaces",
+			);
+		} finally {
+			setLoading(false);
+		}
+	}, [projectId, repoId]);
 
-  useEffect(() => {
-    refresh();
-  }, [refresh]);
+	useEffect(() => {
+		refresh();
+	}, [refresh]);
 
-  return { workspaces, loading, error, refresh };
+	return { workspaces, loading, error, refresh };
 }