feat(admin): add MediaLibrary with image reuse/delete and integrate into EditorShell

apps/admin/src/components/EditorShell.tsx

@@ -2,6 +2,7 @@ import { Box, Button, Stack, Typography } from '@mui/material';
 import AdminLayout from '../layout/AdminLayout';
 import Recorder from '../features/recorder/Recorder';
 import RichEditor from './RichEditor';
+import MediaLibrary from './MediaLibrary';
 import { useEffect, useState } from 'react';
 
 export default function EditorShell({ onLogout }: { onLogout?: () => void }) {
@@ -97,6 +98,10 @@ export default function EditorShell({ onLogout }: { onLogout?: () => void }) {
             )}
           </Stack>
         </Box>
+        <MediaLibrary onInsert={(url) => {
+          // naive append an image block to current HTML
+          setDraft((prev) => `${prev || ''}<p><img src="${url}" alt="" /></p>`);
+        }} />
       </Box>
     </AdminLayout>
   );

apps/admin/src/components/MediaLibrary.tsx

@@ -0,0 +1,79 @@
+import { useEffect, useState } from 'react';
+import { Box, Button, Stack, Typography } from '@mui/material';
+
+type MediaItem = {
+  key: string;
+  size: number;
+  lastModified: string | null;
+};
+
+export default function MediaLibrary({ onInsert }: { onInsert: (url: string) => void }) {
+  const [items, setItems] = useState<MediaItem[]>([]);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState('');
+
+  const load = async () => {
+    try {
+      setLoading(true);
+      setError('');
+      const res = await fetch('/api/media/list?prefix=images/');
+      if (!res.ok) throw new Error(await res.text());
+      const data = await res.json();
+      setItems(Array.isArray(data.items) ? data.items : []);
+    } catch (e: any) {
+      setError(e?.message || 'Failed to load media');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    load();
+  }, []);
+
+  const del = async (key: string) => {
+    try {
+      setError('');
+      const res = await fetch('/api/media/obj', {
+        method: 'DELETE',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ key }),
+      });
+      if (!res.ok) throw new Error(await res.text());
+      await load();
+    } catch (e: any) {
+      setError(e?.message || 'Delete failed');
+    }
+  };
+
+  return (
+    <Box>
+      <Stack direction="row" justifyContent="space-between" alignItems="center" sx={{ mb: 1 }}>
+        <Typography variant="subtitle1">Media Library</Typography>
+        <Button size="small" onClick={load} disabled={loading}>Refresh</Button>
+      </Stack>
+      {error && <Typography color="error" sx={{ mb: 1 }}>{error}</Typography>}
+      <Box sx={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fill, minmax(140px, 1fr))', gap: 1 }}>
+        {items.map((it) => {
+          const url = `/api/media/obj?key=${encodeURIComponent(it.key)}`;
+          const name = it.key.split('/').slice(-1)[0];
+          return (
+            <Box key={it.key} sx={{ border: '1px solid #eee', borderRadius: 1, p: 1 }}>
+              <Box sx={{ width: '100%', height: 100, display: 'flex', alignItems: 'center', justifyContent: 'center', mb: 1, overflow: 'hidden', background: '#fafafa' }}>
+                <img src={url} alt={name} style={{ maxWidth: '100%', maxHeight: '100%', objectFit: 'contain' }} />
+              </Box>
+              <Typography variant="caption" sx={{ display: 'block', mb: 1 }} title={name}>{name}</Typography>
+              <Stack direction="row" spacing={1}>
+                <Button size="small" variant="outlined" onClick={() => onInsert(url)}>Insert</Button>
+                <Button size="small" color="error" onClick={() => del(it.key)}>Delete</Button>
+              </Stack>
+            </Box>
+          );
+        })}
+        {items.length === 0 && !loading && (
+          <Typography variant="body2">No images yet.</Typography>
+        )}
+      </Box>
+    </Box>
+  );
+}