feat(status-ui): improve concurrent session workflows

Add in-place session renewal, searchable model selection, clearer progress feedback, tool-result previews, and per-session presentation state.

Keep commands, errors, loading, and lifecycle indicators attached to their owning runtime so parallel tabs cannot interfere.

ui/src/workspace/useWorkspace.ts

@@ -29,28 +29,46 @@ export function useWorkspace() {
 	const disposed = useRef(true);
 	const refreshGeneration = useRef(0);
 
-	const loadSnapshot = useCallback(async (runtimeId: string) => {
-		if (disposed.current) return;
-		const generation = (loadGeneration.current[runtimeId] ?? 0) + 1;
-		loadGeneration.current[runtimeId] = generation;
-		dispatch({ type: "snapshotRequested", runtimeId, generation });
-		try {
-			const snapshot = await invoke<RuntimeSnapshot>(
-				"get_session_runtime_snapshot",
-				{ runtimeId },
-			);
-			if (!disposed.current)
-				dispatch({ type: "snapshotLoaded", runtimeId, generation, snapshot });
-		} catch (error) {
-			if (!disposed.current)
-				dispatch({
-					type: "snapshotFailed",
-					runtimeId,
-					generation,
-					error: String(error),
-				});
-		}
-	}, []);
+	const loadSnapshot = useCallback(
+		async (runtimeId: string, options: { throwOnError?: boolean } = {}) => {
+			if (disposed.current) return false;
+			const generation = (loadGeneration.current[runtimeId] ?? 0) + 1;
+			loadGeneration.current[runtimeId] = generation;
+			dispatch({ type: "snapshotRequested", runtimeId, generation });
+			try {
+				const snapshot = await invoke<RuntimeSnapshot>(
+					"get_session_runtime_snapshot",
+					{ runtimeId },
+				);
+				if (!disposed.current)
+					dispatch({ type: "snapshotLoaded", runtimeId, generation, snapshot });
+				return true;
+			} catch (error) {
+				if (!disposed.current)
+					dispatch({
+						type: "snapshotFailed",
+						runtimeId,
+						generation,
+						error: String(error),
+					});
+				if (options.throwOnError) throw error;
+				return false;
+			}
+		},
+		[],
+	);
+
+	const snapshotRetryKey = Object.values(state.runtimesById)
+		.flatMap((runtime) =>
+			runtime.snapshotRetry ? [runtime.summary.runtimeId] : [],
+		)
+		.sort((left, right) => left.localeCompare(right))
+		.join("\n");
+	useEffect(() => {
+		if (!snapshotRetryKey) return;
+		for (const runtimeId of snapshotRetryKey.split("\n"))
+			void loadSnapshot(runtimeId);
+	}, [snapshotRetryKey, loadSnapshot]);
 
 	const scheduleSnapshot = useCallback(
 		(runtimeId: string) => {
@@ -177,6 +195,7 @@ export function useWorkspace() {
 						"runtime_opened",
 						"runtime_closed",
 						"runtime_recovered",
+						"runtime_renewed",
 						"runtime_restore_failed",
 					].includes(eventType ?? "")
 				) {