fix: better handling of empty model catalog

src/main/engine/OpenCodeManager.ts

@@ -2167,6 +2167,15 @@ NOTE: Use pagination (offset/limit) in list_posts and search_posts to access all
     return this.modelCatalogEngine;
   }
 
+  /**
+   * Invalidate the in-memory model cache so the next getAvailableModels()
+   * re-fetches and re-cross-references with the catalog.
+   */
+  invalidateModelCache(): void {
+    this.cachedModels = null;
+    this.cachedModelsAt = 0;
+  }
+
   /**
    * Check whether the given provider's API key is configured.
    * All non-mistral providers are routed through OpenCode Zen and share apiKey.

src/main/ipc/chatHandlers.ts

@@ -330,6 +330,9 @@ export function registerChatHandlers(): void {
     try {
       const manager = await getOpenCodeManager();
       const result = await manager.getModelCatalogEngine().refresh();
+      // Invalidate the in-memory model cache so vision/name data
+      // from the freshly populated catalog is picked up immediately.
+      manager.invalidateModelCache();
       return result;
     } catch (error) {
       console.error('[Chat IPC] Error refreshing model catalog:', error);