feat(render+templates): Remotion engine, 16 branded templates (incl. 3D), seconds pricing, coming-soon

Render engine
- Add Remotion (code-based) as a 2nd render engine alongside After Effects.
  node-agent dispatches on Job.Engine; RunRemotion maps bindings -> --props,
  renders native then ffmpeg-scales to the quality tier (aspect-preserving).
- content.projects.render_engine + render_remotion_comp (migration 32);
  render-svc claim resolves engine and routes (skips .aep for Remotion).
- Admin TemplatesAdmin gains an engine picker + Remotion composition id field.

Template pack (services/remotion)
- 16 branded, Persian (Vazirmatn), color- and text-editable templates, each in
  3 aspects (16:9 / 1:1 / 9:16): LogoMotion, Opener, InstaPromo, YouTubeIntro,
  Slideshow, HappyBirthday, SalePromo, QuoteCard, EventInvite, Countdown,
  GlitterReveal (editable logo image), NowruzGreeting (animated characters),
  and 4 cinematic 3D templates via @remotion/three (Hero3D, Nowruz3D,
  Birthday3D, Promo3D) with reflections + bloom/DOF/vignette.
- scripts/seed_remotion_templates.py seeds containers/projects/scenes/colors.

Pricing
- Rewrite /pricing to the seconds-based model (charge = length x resolution),
  data-driven from /v1/plans, Toman, broker checkout.

Coming-soon
- Persian experimental-build overlay on all pages (launch date + countdown).

Fixes
- middleware matcher bypasses all static asset paths; catalog mapping passes
  cover image + preview video so real thumbnails render.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

services/render/internal/handlers/internal.go

@@ -282,10 +282,14 @@ func (h *InternalHandler) Claim(c *gin.Context) {
 	// and reused by every render of that template. A .zip is a full AE project
 	// bundle (.aep + footage/fonts) the node must extract before rendering.
 	// Errors are non-fatal — the node agent falls back to mock render when URL is empty.
+	// Resolve the render engine + composition for this template. Remotion
+	// templates are code-based and need no .aep download.
+	rcfg, _ := h.store.GetTemplateRenderConfig(c.Request.Context(), job.OriginalProjectID)
+
 	aepURL := ""
 	isBundle := false
 	bundleMD5 := ""
-	if h.minio != nil {
+	if rcfg.Engine != "Remotion" && h.minio != nil {
 		candidates := []struct {
 			name   string
 			bundle bool
@@ -311,11 +315,12 @@ func (h *InternalHandler) Claim(c *gin.Context) {
 		}
 	}
 
-	// Composition to render (-comp). Non-fatal: empty → node uses the render queue.
-	compName, _ := h.store.GetTemplateCompName(c.Request.Context(), job.OriginalProjectID)
+	// Composition to render: AE comp (-comp) or the Remotion composition id.
+	// Non-fatal: empty → AE node uses the render queue.
+	compName := rcfg.CompName
 
 	// User's edited input values → the node writes them into the AE project before
-	// rendering (render binder). Non-fatal: empty → renders template defaults.
+	// rendering, or passes them as Remotion --props. Non-fatal: empty → template defaults.
 	bindings, _ := h.store.GetRenderBindings(c.Request.Context(), job.SavedProjectID)
 
 	c.JSON(http.StatusOK, models.ClaimedJob{
@@ -326,6 +331,7 @@ func (h *InternalHandler) Claim(c *gin.Context) {
 		FrameRate:      job.FrameRate,
 		HasMusic:       job.HasMusic,
 		HasVoiceover:   job.HasVoiceover,
+		Engine:         rcfg.Engine,
 		AEPDownloadURL: aepURL,
 		IsBundle:       isBundle,
 		BundleMD5:      bundleMD5,