Initial commit: /watch skill v0.1.0

Give Claude the ability to watch any video — yt-dlp download, ffmpeg
frame extraction with auto-scaled fps, native-caption transcript with
Whisper (Groq/OpenAI) fallback.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

hooks/hooks.json

@@ -0,0 +1,16 @@
+{
+  "hooks": {
+    "SessionStart": [
+      {
+        "matcher": "",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "bash ${CLAUDE_PLUGIN_ROOT}/hooks/scripts/check-setup.sh",
+            "timeout": 5
+          }
+        ]
+      }
+    ]
+  }
+}