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

[devin-ai-integration]

Summary

Syncs openrouter-tts with openrouter-web #31562, which added stateless voice cloning to the public /api/v1/audio/speech request schema.

New public request field, documented in the parameter table plus a worked example:

input_references: [
  { type: "input_audio", input_audio: { data: "<base64 | data URI>", format?: "wav" } },
  { type: "text", text: "<transcript of the reference audio>" }  // optional, at most one
]

Server-side constraints the skill now states: exactly one input_audio part is required, at most one text transcript part, and reference audio is capped at 20 MiB of base64 (15 MiB decoded).

Two corrections that follow from the same change:

• Voice-cloning support is an endpoint capability (supports_voice_cloning on the public endpoint projection), not a models-list field, so discovery routes through GET /api/v1/models/{author}/{slug}/endpoints. Requests carrying reference audio are only routed to endpoints where it is true.
• voice is optional at the schema level, not unconditionally required; the model/provider-specific requirement is kept as a caveat.

No other skill needed an update from the last 24 hours of merges — the remaining candidates were provider-adapter and serialization changes, internal billing/pricing SKUs, cfw-frontend-api routes, or public surfaces no existing skill teaches.

Link to Devin session: https://openrouter.devinenterprise.com/sessions/fc599ee099b64d18af727a012bf0db81

[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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