fix(render): real AE render — pass -comp, fix export insert, ensure exports bucket

Three bugs surfaced bringing up a real After Effects node (verified: AE 2026
claimed + ran, but produced no usable output):

1. aerender got no -comp/-rqindex → "output argument ignored", nothing rendered.
   - Claim now returns comp_name from content.projects.render_aep_comp (e.g. "frfinal")
     via new Store.GetTemplateCompName; threaded through ClaimedJob → runner.Job →
     aerender args (`-comp <name>`, or `-rqindex 1` fallback when unknown).

2. CreateExportForJob INSERT passed render_quality as a bare param into an enum
   column → 500 ("output-upload-url HTTP 500"), so completed renders had no export.
   - Cast $8::render.render_quality (+ explicit casts for file_type/create_type enums).

3. flatrender-exports bucket didn't exist → uploads would fail anyway.
   - render-svc now MakeBucket(exports, templates) idempotently at startup.

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

services/render/cmd/server/main.go

@@ -60,6 +60,16 @@ func main() {
 	if err != nil {
 		log.Fatalf("minio client: %v", err)
 	}
+	// Ensure the render output bucket exists (node agents PUT exports here).
+	for _, b := range []string{minioBucket, minioTemplatesBucket} {
+		if exists, berr := mc.BucketExists(context.Background(), b); berr == nil && !exists {
+			if merr := mc.MakeBucket(context.Background(), b, minio.MakeBucketOptions{}); merr != nil {
+				log.Printf("warning: could not create bucket %q: %v", b, merr)
+			} else {
+				log.Printf("created bucket %q", b)
+			}
+		}
+	}
 
 	// ── Store + handlers ──────────────────────────────────────────────────────
 	store    := db.NewStore(pool)