Add extension-frame refine and lossless anchor options.

Prefer clip anchor PNGs for handoffs, optionally run Bilateral+Flux cleanup before I2V, and save decoded last-frame anchors so sequential extensions accumulate less compression damage.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/utils/studioQueue.ts

@@ -69,6 +69,9 @@ export interface StudioJobPayload {
   maskStillFilename?: string
   refineStrength?: number
   extendFromClipId?: string
+  refineExtensionFrame?: boolean
+  saveLosslessAnchor?: boolean
+  refinementDenoise?: number
   lyrics?: string
   instrumental?: boolean
   lyricsStrength?: number
@@ -1156,7 +1159,10 @@ async function startStudioExtendJob(item: StudioJob) {
       duration: item.payload.duration,
       loraStack: item.payload.loraStack || item.payload.loraName,
       folderLocked: item.payload.folderLocked,
-      name: item.payload.name || item.name
+      name: item.payload.name || item.name,
+      refineExtensionFrame: item.payload.refineExtensionFrame,
+      saveLosslessAnchor: item.payload.saveLosslessAnchor,
+      refinementDenoise: item.payload.refinementDenoise
     })
     await markStudioLive(item.ownerKey, item.id, live.id)
   } catch (error) {
@@ -1294,6 +1300,9 @@ export async function startStudioJob(item: StudioJob) {
     useIdentityRefs: identity,
     queueAutoRun: extensions.length ? payload.queueAutoRun : false,
     queueBudget: extensions.length && payload.queueAutoRun ? extensions.length : 0,
+    refineExtensionFrame: payload.refineExtensionFrame !== false,
+    saveLosslessAnchor: payload.saveLosslessAnchor === true,
+    refinementDenoise: payload.refinementDenoise,
     globalLocks: payload.globalLocks,
     permanenceRefs: payload.permanenceRefs,
     shotPermanenceRefs: payload.shotPermanenceRefs,