Merge 3aa6d0503d into da71eaebd2

src/utils/provider-utils.ts

@@ -6,21 +6,22 @@
  * Returns true if the provider requires reasoning to be wrapped in tags
  * (e.g. <think> and <final>) in the text stream, rather than using native
  * API fields for reasoning/thinking.
+ *
+ * NOTE: Only include providers that NATIVELY use <think> and <final> tags.
+ * Standard Gemini 2.0 (google-gemini-cli, google-generative-ai) does NOT use
+ * these tags natively, but Google Antigravity (Gemini 3.0) does.
  */
 export function isReasoningTagProvider(provider: string | undefined | null): boolean {
   if (!provider) return false;
   const normalized = provider.trim().toLowerCase();
 
   // Check for exact matches or known prefixes/substrings for reasoning providers
-  if (
-    normalized === "ollama" ||
-    normalized === "google-gemini-cli" ||
-    normalized === "google-generative-ai"
-  ) {
+  if (normalized === "ollama") {
     return true;
   }
 
   // Handle google-antigravity and its model variations (e.g. google-antigravity/gemini-3)
+  // This is Gemini 3.0 which DOES use reasoning tags natively.
   if (normalized.includes("google-antigravity")) {
     return true;
   }