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>

.github/workflows/release.yml

@@ -0,0 +1,31 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Build .skill artifact
+        run: |
+          bash scripts/build-skill.sh
+          test -f dist/watch.skill
+
+      - name: Create GitHub release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: dist/watch.skill
+          generate_release_notes: true
+          draft: false
+          prerelease: false