LibTV - Image & Video Generation (Seedance 2.0)

Generate AI images and videos through one bundled LibTV skill, powered by Seedance 2.0. Supports text-to-image, image-to-image, text-to-video, and image-to-video workflows, via both Nexu-managed Seedance execution and direct LibTV execution with a user-owned sk-libtv-... key.

Key routing:

• mgk_... keys use Nexu-managed Seedance through https://seedance.nexu.io/
• sk-libtv-... keys use direct LibTV OpenAPI through https://im.liblib.tv

Delivery architecture (currently Feishu only):

• create-session captures OPENCLAW_CHANNEL_TYPE + OPENCLAW_CHAT_ID, persists them as the session's delivery block, forks a detached wait-and-deliver background process via subprocess.Popen(..., start_new_session=True), and returns immediately with a single-line JSON submit confirmation on stdout.
• The forked waiter polls the upstream LibTV API (Seedance gateway or direct LibTV) and, on terminal success, shells out to feishu_send_video.py, the same proven helper used by medeo-video, which downloads each result URL, uploads it to Feishu's file API, and posts a native media message to the originating chat.
• The waiter's output is captured in $NEXU_HOME/libtv-waiter-<id>.log for post-hoc debugging. A delivered_at timestamp is persisted when the Feishu helper reports success, so re-invoking wait-and-deliver on a delivered session is a safe no-op.

No sessions_spawn, no subagent model-speech contract, no HTTP notification callback, no stale routing fields. Delivery is a direct HTTP call using stable per-user identifiers (open_id / chat_id) that never go stale the way the old account_id did.

Multi-channel support is a follow-up: adding Discord / Slack / WeChat means dropping a new <channel>_send_video.py helper next to feishu_send_video.py and adding one branch in _deliver_results.

Requirements