feat(recordings): add RecordingsPanel component for displaying voice recordings

.gitignore

@@ -1,5 +1,5 @@
 node_modules
-recordings
+/recordings
 .env
 dist/
 public/app/

frontend/src/components/recordings/RecordingsPanel.tsx

@@ -0,0 +1,125 @@
+import { useEffect, useState } from "react";
+import { Card, CardContent, CardHeader, CardTitle } from "../ui/card";
+
+interface VoiceRecording {
+  id: string;
+  user_id: string;
+  username: string;
+  avatar_url: string | null;
+  guild_id: string | null;
+  channel_id: string | null;
+  channel_name: string | null;
+  filename: string;
+  size_bytes: number;
+  download_url: string | null;
+  upload_status: "pending" | "uploaded" | "failed";
+  upload_error: string | null;
+  created_at: number;
+  uploaded_at: number | null;
+}
+
+function formatDate(value: number): string {
+  return new Date(value).toLocaleString();
+}
+
+function formatBytes(value: number): string {
+  if (value < 1024) return `${value} B`;
+  if (value < 1024 * 1024) return `${(value / 1024).toFixed(1)} KB`;
+  return `${(value / 1024 / 1024).toFixed(1)} MB`;
+}
+
+export function RecordingsPanel() {
+  const [recordings, setRecordings] = useState<VoiceRecording[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+
+    async function loadRecordings() {
+      try {
+        setLoading(true);
+        setError(null);
+        const response = await fetch("/api/recordings");
+        if (!response.ok) {
+          throw new Error(`Failed to load recordings: ${response.status}`);
+        }
+        const data = (await response.json()) as VoiceRecording[];
+        if (!cancelled) setRecordings(data);
+      } catch (err) {
+        if (!cancelled) {
+          setError(err instanceof Error ? err.message : String(err));
+        }
+      } finally {
+        if (!cancelled) setLoading(false);
+      }
+    }
+
+    loadRecordings();
+    window.addEventListener("voice_recording_uploaded", loadRecordings);
+
+    return () => {
+      cancelled = true;
+      window.removeEventListener("voice_recording_uploaded", loadRecordings);
+    };
+  }, []);
+
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle>Voice Recordings</CardTitle>
+      </CardHeader>
+      <CardContent>
+        {loading ? (
+          <div className="rounded-xl border border-dashed border-border p-6 text-center text-sm text-muted-foreground">
+            Loading recordings...
+          </div>
+        ) : error ? (
+          <div className="rounded-xl border border-dashed border-destructive p-6 text-center text-sm text-destructive">
+            {error}
+          </div>
+        ) : recordings.length === 0 ? (
+          <div className="rounded-xl border border-dashed border-border p-6 text-center text-sm text-muted-foreground">
+            No recordings found.
+          </div>
+        ) : (
+          <div className="space-y-3">
+            {recordings.map((recording) => (
+              <div
+                key={recording.id}
+                className="rounded-xl border border-border bg-background/60 p-4"
+              >
+                <div className="flex flex-col gap-3 md:flex-row md:items-center md:justify-between">
+                  <div className="min-w-0">
+                    <div className="truncate font-medium">{recording.filename}</div>
+                    <div className="mt-1 text-sm text-muted-foreground">
+                      {recording.username} · {recording.channel_name ?? recording.channel_id ?? "unknown channel"} · {formatDate(recording.created_at)}
+                    </div>
+                    <div className="mt-1 text-xs text-muted-foreground">
+                      {formatBytes(recording.size_bytes)} · {recording.upload_status}
+                    </div>
+                    {recording.upload_error ? (
+                      <div className="mt-2 text-xs text-destructive">
+                        {recording.upload_error}
+                      </div>
+                    ) : null}
+                  </div>
+                  {recording.download_url ? (
+                    <a
+                      href={recording.download_url}
+                      target="_blank"
+                      rel="noreferrer"
+                      className="rounded-lg bg-primary px-3 py-2 text-center text-sm font-medium text-primary-foreground"
+                    >
+                      Download
+                    </a>
+                  ) : null}
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </CardContent>
+    </Card>
+  );
+}