Add commands/watch.md so /watch is callable via Claude Code plugin

Claude Code plugins expose slash commands from commands/*.md; the root
SKILL.md alone isn't discovered. Thin shim delegates to the existing
skill contract. Strip commands/ from the claude.ai .skill bundle since
that surface uses SKILL.md directly. Bumped to 0.1.1.

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

.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "watch",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Let Claude watch a video. Downloads with yt-dlp, extracts auto-scaled frames with ffmpeg, pulls captions or falls back to Whisper, and hands frames + transcript to Claude so it can answer questions about the video.",
   "author": {
     "name": "Bradley Bonanno"