feat(workers): ingest.video via yt-dlp + Whisper

yt-dlp pulls metadata (title, description, uploader, thumbnail) and
bestaudio (opus). faster-whisper transcribes; audio file removed after.
Creates a refs row with kind='video' and source_kind='youtube' for
YouTube URLs, generic 'video' otherwise. Idempotent on
sha256(space_id + url) via refs.external_id.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

workers/tests/test_video.py

@@ -0,0 +1,59 @@
+import subprocess
+from unittest.mock import patch
+from void_workers.handlers.video import handle as handle_video
+
+
+def _reset_void_schema(conn):
+    conn.execute("DROP SCHEMA IF EXISTS public CASCADE")
+    conn.execute("CREATE SCHEMA public")
+    conn.execute("CREATE EXTENSION IF NOT EXISTS pgcrypto")
+    conn.execute("CREATE EXTENSION IF NOT EXISTS vector")
+
+
+def _run_node_migrations():
+    subprocess.run(
+        ["node", "lib/db/migrate.js", "up"],
+        cwd="/project/src/void-v2",
+        check=True
+    )
+
+
+def test_video_creates_ref_with_transcript_and_metadata(conn):
+    _reset_void_schema(conn)
+    _run_node_migrations()
+    sp = conn.execute(
+        "INSERT INTO spaces(slug, name) VALUES('plan4-vid', 'V') RETURNING id"
+    ).fetchone()[0]
+
+    info = {
+        "title": "Sample video",
+        "description": "a description",
+        "duration": 90,
+        "uploader": "Channel",
+        "thumbnail": "https://i.ytimg.com/t.jpg"
+    }
+    with patch("void_workers.handlers.video._yt_dlp_info", return_value=info), \
+         patch("void_workers.handlers.video._yt_dlp_audio", return_value="/tmp/fake.opus"), \
+         patch("void_workers.handlers.video.whisper_transcribe", return_value="hello world transcript"), \
+         patch("os.unlink"):
+        out = handle_video({"space_id": str(sp), "url": "https://youtu.be/abc"})
+
+    assert "ref_id" in out
+    row = conn.execute(
+        "SELECT title, body_text, source_kind FROM refs WHERE id=%s",
+        (out["ref_id"],)
+    ).fetchone()
+    assert row[0] == "Sample video"
+    assert "hello world" in row[1]
+    assert row[2] == "youtube"
+
+
+def test_video_skipped_when_yt_dlp_fails(conn):
+    _reset_void_schema(conn)
+    _run_node_migrations()
+    sp = conn.execute(
+        "INSERT INTO spaces(slug, name) VALUES('plan4-vid2', 'V2') RETURNING id"
+    ).fetchone()[0]
+    with patch("void_workers.handlers.video._yt_dlp_info", return_value=None):
+        out = handle_video({"space_id": str(sp), "url": "https://youtu.be/gone"})
+    assert out.get("skipped") == "yt-dlp"