Add ez-assistant and kerberos service folders

docker-compose/ez-assistant/skills/video-frames/SKILL.md

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+---
+name: video-frames
+description: Extract frames or short clips from videos using ffmpeg.
+homepage: https://ffmpeg.org
+metadata: {"moltbot":{"emoji":"🎞️","requires":{"bins":["ffmpeg"]},"install":[{"id":"brew","kind":"brew","formula":"ffmpeg","bins":["ffmpeg"],"label":"Install ffmpeg (brew)"}]}}
+---
+
+# Video Frames (ffmpeg)
+
+Extract a single frame from a video, or create quick thumbnails for inspection.
+
+## Quick start
+
+First frame:
+
+```bash
+{baseDir}/scripts/frame.sh /path/to/video.mp4 --out /tmp/frame.jpg
+```
+
+At a timestamp:
+
+```bash
+{baseDir}/scripts/frame.sh /path/to/video.mp4 --time 00:00:10 --out /tmp/frame-10s.jpg
+```
+
+## Notes
+
+- Prefer `--time` for “what is happening around here?”.
+- Use a `.jpg` for quick share; use `.png` for crisp UI frames.