fix: gate sticker vision on image input

src/telegram/bot-message-dispatch.ts

@@ -27,7 +27,7 @@ async function resolveStickerVisionSupport(cfg, agentId) {
     const defaultModel = resolveDefaultModelForAgent({ cfg, agentId });
     const entry = findModelInCatalog(catalog, defaultModel.provider, defaultModel.model);
     if (!entry) return false;
-    return entry.input ? modelSupportsVision(entry) : true;
+    return modelSupportsVision(entry);
   } catch {
     return false;
   }