Video: use local files; return local URL in status; remove /by-job

[apensotti]

Problem

• Expiring provider URLs caused 404s like: “The video is no longer available. Downloads expire after 1 hours.”

Solution

• Save generated videos locally and prefer local file URLs in chat.
• Enrich GET /api/v1/videos/sora2/{id}/status to include { url, fileId } when a local asset exists.
• Update VideoJob to consume data.url from status and finalize only when needed.
• Update ChatMessages to ignore remote video URLs and render via VideoJob (resolves local files).
• Remove /api/v1/videos/sora2/by-job/{id} endpoint.

Security & Docs

• Re-authorizes on every API call.
• No secrets exposed to clients; only local file URLs returned.
• No GET mutations; finalize remains POST-only.
• Swagger tags present; response now includes url/fileId (follow-up: extend schema fields).

Files

• app/api/v1/videos/sora2/[id]/status/route.ts (+ local url lookup)
• components/ai/video.tsx (prefer status url; remove /by-job)
• components/chat/chat-messages.tsx (prefer local url; fallback to VideoJob)
• app/api/v1/videos/sora2/by-job/[id]/route.ts (deleted)

Testing

• Generated video renders from /files/... without expiring.