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feat: AE template scanner + scene editor + AEP bundle pipeline

Scene editor (admin): per-project Scenes / Shared Colors / Color Presets
manager (ProjectScenes) reachable from each project.

AEP bundle pipeline: upload .aep or .zip → stored once per template at
templates/{project_id}/(bundle.zip|template.aep); render claim probes and
returns is_bundle+md5; node-agent extracts the bundle, locates the .aep
(zip-slip guarded), and caches by md5 so repeated renders extract once.

AE template scanner ("read scenes/colours/configs from the AEP"):
- content-svc importer: POST /v1/projects/{id}/scan/{preview,apply} —
  review-diff-then-merge into scenes/elements/colours (manual edits kept).
- render-svc Go quick-scan: stdlib RIFX parser extracts comp names+durations
  (no AE) → POST /v1/template-scans/{id}/quick.
- render-svc AE scan jobs + node-agent runner: queue → node runs scan.jsx
  (reverse of legacy JSXGenerator conventions: frfinal/frshare/frl_/frd_) →
  posts ScanResult back. Migration 26_render_scan_jobs.
- admin UI: "اسکن از افترافکت" with quick/full engines + diff-review modal.

Verified: importer preview/apply, Go quick-scan end-to-end (synthetic .aep →
scene imported), bundle extract unit tests, RIFX parser unit tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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services/render/internal/models/models.go

@@ -415,9 +415,15 @@ type ClaimedJob struct {
 	FrameRate      int       `json:"frame_rate"`
 	HasMusic       bool      `json:"has_music"`
 	HasVoiceover   bool      `json:"has_voiceover"`
-	// AEPDownloadURL is a presigned MinIO GET URL for the .aep project file.
-	// Valid for 2 hours. Empty when the template is not yet uploaded.
+	// AEPDownloadURL is a presigned MinIO GET URL for the .aep project file
+	// (or .zip bundle). Valid for 2 hours. Empty when the template is not yet uploaded.
 	AEPDownloadURL string `json:"aep_download_url,omitempty"`
+	// IsBundle is true when AEPDownloadURL points to a .zip bundle (the .aep plus
+	// footage/fonts) that the node agent must extract before rendering.
+	IsBundle bool `json:"is_bundle,omitempty"`
+	// BundleMD5 is the stored object's ETag/MD5 — the node uses it as a cache key so
+	// repeated renders of the same template download + extract the bundle only once.
+	BundleMD5 string `json:"bundle_md5,omitempty"`
 }
 
 // OutputUploadURLResponse is returned by POST .../output-upload-url.