render-svc:
- db.UpdateJobPreview(): writes base64 PNG to render_jobs.image_preview_b64
(only on active jobs; Done/Failed/Cancelled rows ignored)
- POST /v1/internal/render/jobs/:job_id/preview — node agent endpoint
- Route registered under /v1/internal (nodeAuth)
node-agent:
- runner.PreviewFn callback type alongside ProgressFn
- runner.preview.go: GeneratePreviewB64(percent, quality, resolution)
— pure stdlib (image/png + encoding/base64), no external deps
— 320×180 dark frame with animated progress bar + colored indicator dots
- mock render: pushes a preview frame at every step (5→95%)
- real AE render: pushes a preview frame every 30s
- client.UpdatePreview(): POST /v1/internal/render/jobs/:job_id/preview
- main.go: onPreview callback wires client.UpdatePreview() into runner.Run()
frontend:
- render-jobs.ts: RenderJobRow.preview_b64 field; read from progress endpoint
- status/route.ts: previewB64 included in JSON response
- RenderModal: aspect-ratio preview pane during polling — shows spinner until
first frame arrives, then live-updates with each poll (every 3s);
step label overlaid as badge bottom-right
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
soroush.asadi
d7743a6fbe