feat: initial public release (MAESTRO)

ui/src/hooks/useFileBrowser.ts

@@ -0,0 +1,47 @@
+import { useState, useEffect, useCallback } from 'react';
+import { fetchLocalFiles, type LocalFileEntry } from '../api';
+
+export function useFileBrowser(taskId: number | null) {
+  const [section, setSection] = useState<'workspace' | 'input' | 'output' | 'logs'>('workspace');
+  const [currentPath, setCurrentPath] = useState('');
+  const [entries, setEntries] = useState<LocalFileEntry[]>([]);
+  const [isRefreshing, setIsRefreshing] = useState(false);
+
+  // Fetch entries when taskId/section/path changes
+  useEffect(() => {
+    if (!taskId) return;
+    fetchLocalFiles(taskId, section, currentPath)
+      .then(r => setEntries(r.entries))
+      .catch(() => setEntries([]));
+  }, [taskId, section, currentPath]);
+
+  // Reset when task changes
+  useEffect(() => {
+    setSection('output');
+    setCurrentPath('');
+  }, [taskId]);
+
+  const refresh = useCallback(async () => {
+    if (!taskId) return;
+    setIsRefreshing(true);
+    try {
+      const r = await fetchLocalFiles(taskId, section, currentPath);
+      setEntries(r.entries);
+    } catch {
+      setEntries([]);
+    } finally {
+      setIsRefreshing(false);
+    }
+  }, [taskId, section, currentPath]);
+
+  const pathSegments = currentPath ? currentPath.split('/').filter(Boolean) : [];
+
+  return {
+    section, setSection,
+    currentPath, setCurrentPath,
+    entries,
+    isRefreshing,
+    refresh,
+    pathSegments,
+  };
+}