feat(batchRunner): add unsaved changes confirmation on close

When closing the Auto Run Configuration modal, show a confirmation
dialog if there are unsaved changes to:
- Document list (documents added or removed)
- Loop settings (enabled/disabled, max loops)
- Agent prompt (edited from initial value)

If no changes were made, the modal closes immediately without
confirmation.

This prevents accidental loss of configuration when users press
Escape, click Cancel, or click the X button.

src/renderer/components/BatchRunnerModal.tsx

@@ -117,6 +117,9 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 		return [];
 	});
 
+	// Track initial document state for dirty checking
+	const initialDocumentsRef = useRef<string[]>([currentDocument].filter(Boolean));
+
 	// Task counts per document (keyed by filename)
 	const [taskCounts, setTaskCounts] = useState<Record<string, number>>({});
 	const [loadingTaskCounts, setLoadingTaskCounts] = useState(true);
@@ -125,6 +128,10 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 	const [loopEnabled, setLoopEnabled] = useState(false);
 	const [maxLoops, setMaxLoops] = useState<number | null>(null); // null = infinite
 
+	// Track initial loop settings for dirty checking
+	const initialLoopEnabledRef = useRef(false);
+	const initialMaxLoopsRef = useRef<number | null>(null);
+
 	// Prompt state
 	const [prompt, setPrompt] = useState(initialPrompt || DEFAULT_BATCH_PROMPT);
 	const [variablesExpanded, setVariablesExpanded] = useState(false);
@@ -132,6 +139,43 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 	const [promptComposerOpen, setPromptComposerOpen] = useState(false);
 	const textareaRef = useRef<HTMLTextAreaElement>(null);
 
+	// Track initial prompt for dirty checking
+	const initialPromptRef = useRef(initialPrompt || DEFAULT_BATCH_PROMPT);
+
+	// Compute if there are unsaved configuration changes
+	// This checks if documents, loop settings, or prompt have changed from initial values
+	const hasUnsavedConfigChanges = useCallback(() => {
+		// Check if documents have changed (compare filenames)
+		const currentDocFilenames = documents.map((d) => d.filename).sort();
+		const initialDocFilenames = [...initialDocumentsRef.current].sort();
+		const documentsChanged =
+			currentDocFilenames.length !== initialDocFilenames.length ||
+			currentDocFilenames.some((f, i) => f !== initialDocFilenames[i]);
+
+		// Check if loop settings have changed
+		const loopChanged =
+			loopEnabled !== initialLoopEnabledRef.current || maxLoops !== initialMaxLoopsRef.current;
+
+		// Check if prompt has changed
+		const promptChanged = prompt !== initialPromptRef.current;
+
+		return documentsChanged || loopChanged || promptChanged;
+	}, [documents, loopEnabled, maxLoops, prompt]);
+
+	// Handler for closing with unsaved changes check
+	const handleCloseWithConfirmation = useCallback(() => {
+		if (hasUnsavedConfigChanges()) {
+			showConfirmation(
+				'You have unsaved changes to your Auto Run configuration. Close without saving?',
+				() => {
+					onClose();
+				}
+			);
+		} else {
+			onClose();
+		}
+	}, [hasUnsavedConfigChanges, showConfirmation, onClose]);
+
 	// Playbook management callback to apply loaded playbook configuration
 	const handleApplyPlaybook = useCallback(
 		(data: {
@@ -238,7 +282,7 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 				} else if (showSavePlaybookModal) {
 					setShowSavePlaybookModal(false);
 				} else {
-					onClose();
+					handleCloseWithConfirmation();
 				}
 			},
 		});
@@ -255,6 +299,7 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 		showSavePlaybookModal,
 		showDeleteConfirmModal,
 		handleCancelDeletePlaybook,
+		handleCloseWithConfirmation,
 	]);
 
 	// Update handler when dependencies change
@@ -266,12 +311,12 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 				} else if (showSavePlaybookModal) {
 					setShowSavePlaybookModal(false);
 				} else {
-					onClose();
+					handleCloseWithConfirmation();
 				}
 			});
 		}
 	}, [
-		onClose,
+		handleCloseWithConfirmation,
 		updateLayerHandler,
 		showSavePlaybookModal,
 		showDeleteConfirmModal,
@@ -365,7 +410,7 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 								{totalTaskCount === 1 ? 'task' : 'tasks'}
 							</span>
 						</div>
-						<button onClick={onClose} style={{ color: theme.colors.textDim }}>
+						<button onClick={handleCloseWithConfirmation} style={{ color: theme.colors.textDim }}>
 							<X className="w-4 h-4" />
 						</button>
 					</div>
@@ -710,7 +755,7 @@ export function BatchRunnerModal(props: BatchRunnerModalProps) {
 					{/* Right side: Buttons */}
 					<div className="flex items-center gap-2">
 						<button
-							onClick={onClose}
+							onClick={handleCloseWithConfirmation}
 							className="px-4 py-2 rounded border hover:bg-white/5 transition-colors"
 							style={{ borderColor: theme.colors.border, color: theme.colors.textMain }}
 						>