fix(plugin): persist ultrawork variant on same-model override and normalize Claude model IDs

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src/plugin/ultrawork-model-override.ts

@@ -110,12 +110,16 @@ function applyResolvedUltraworkOverride(args: {
   if (!override.providerID || !override.modelID) return
 
   const targetModel = { providerID: override.providerID, modelID: override.modelID }
+  const messageId = output.message["id"] as string | undefined
   if (isSameModel(output.message.model, targetModel)) {
+    if (validatedVariant && messageId) {
+      scheduleDeferredModelOverride(messageId, targetModel, validatedVariant)
+      log(`[ultrawork-model-override] Persist validated variant for active model: ${override.modelID}`)
+      return
+    }
     log(`[ultrawork-model-override] Skip override; target model already active: ${override.modelID}`)
     return
   }
-
-  const messageId = output.message["id"] as string | undefined
   if (!messageId) {
     log("[ultrawork-model-override] No message ID found, falling back to direct mutation")
     output.message.model = targetModel