docs(openrouter-video): sync with openrouter-web changes

[devin-ai-integration]

Summary

POST /api/v1/videos now validates input modalities before dispatch (openrouter-web#32040, openrouter-web#32063), and the skill said nothing about it, so an agent hitting one of the new 400s would most likely retry the same payload.

Three gates, all pre-dispatch 400s with the standard { error: { message } } body:

1. each input_references/frame_images entry's modality must be accepted by the model (frame_images/image_url count as image, audio_url as audio, video_url as video);
2. the selected adapter must accept that input form, so a model-level match can still be rejected per provider;
3. models can require a modality — a video-to-video model rejects a request with no video_url reference; required text is satisfied by a non-empty prompt.

The requirement metadata is not exposed on GET /api/v1/videos/models, so the error message is the only source of truth for what is missing. That is the reason the new section tells the agent to fix the payload (add the reference, drop the unsupported input, or switch model/provider) rather than retry.

Link to Devin session: https://openrouter.devinenterprise.com/sessions/898c97dc4b6b45abb203df1a32f76143

[devin-ai-integration]

Original prompt from Automation

You are the public skills sync pipeline. Your job is to scan PRs merged to main on OpenRouterTeam/openrouter-web in the last 24 hours, determine if any changes warrant updating the public agent skills in OpenRouterTeam/skills, and open PRs to the skills repo when updates are needed.

#``# Step 1: Identify relevant merged PRs

Clone both repos:

cd /home/ubuntu/repos/openrouter-web
git fetch origin main
git log --since='24 hours ago' --merges --first-parent origin/main --pretty=format:'%H|%s' --name-only

For each merged PR, collect the list of changed files. Only PRs that touch the paths in the mapping below are relevant. Skip bot commits (devin-ai-integration[bot], Devin AI, GitHub Actions Bot, openrouter[bot], opencode-agent[bot], OpenRouter SDK Bot, Claude, detail-app[bot], forge-the-devex-intern[bot], dependabot[bot]).

If no relevant PRs were merged, post a short message to the #devrel Slack channel (C08LQFVSC7Q) saying no skill-relevant changes were detected today, and exit.

#``# Step 2: Map changed files to affected skills

Use this mapping to determine which public skills are potentially affected:

openrouter-web paths	Affected skill(s) in OpenRouterTeam/skills
sdks/typescript/, packages/llm-interfaces/	openrouter-typescript-sdk, openrouter-agent-migration
services/cfw-*/src/routes/*analytics*, analytics query/response schemas	openrouter-analytics, openrouter-analytics-query, openrouter-analytics-schema
Generation routes, /api/v1/generation	openrouter-generations
Image generation adapters, packages/image-generation/	openrouter-images
supabase/seeds/, model schemas, /api/v1/models route	openrouter-models
OAuth/auth routes, PKCE flow code	openrouter-oauth
STT adapters, services/cfw-stt-api/, /api/v1/audio/transcriptions	openrouter-stt
TTS routes, /api/v1/audio/speech	openrouter-tts
Video adapters, /api/v1/videos	openrouter-video
``@`openr... (3383 chars truncated...)

[devin-ai-integration]

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