fix (provider): deprecated gemini oauth provider (#11223)

crates/goose/src/providers/gemini_cli.rs

@@ -167,7 +167,7 @@ impl goose_providers::base::ProviderDescriptor for GeminiCliProvider {
         ProviderMetadata::new(
             GEMINI_CLI_PROVIDER_NAME,
             "Gemini CLI",
-            "[Deprecated: use gemini_oauth instead] Execute Gemini models via gemini CLI tool. Requires gemini CLI installed.",
+            "[Deprecated: use the Google or Vertex AI provider instead] Execute Gemini models via gemini CLI tool. Requires gemini CLI installed.",
             GEMINI_CLI_DEFAULT_MODEL,
             GEMINI_CLI_KNOWN_MODELS.to_vec(),
             GEMINI_CLI_DOC_URL,

crates/goose/src/providers/gemini_oauth.rs

@@ -934,7 +934,7 @@ impl goose_providers::base::ProviderDescriptor for GeminiOAuthProvider {
         ProviderMetadata::new(
             GEMINI_OAUTH_PROVIDER_NAME,
             "Gemini",
-            "Sign in with your Google account to use Gemini models — no API key needed",
+            "[Deprecated: use the Google provider with a Gemini API key or Vertex AI instead] Sign in with your Google account to use Gemini models — no API key needed",
             GEMINI_OAUTH_DEFAULT_MODEL,
             GEMINI_OAUTH_KNOWN_MODELS.to_vec(),
             GOOGLE_DOC_URL,

crates/goose/src/providers/init.rs

@@ -114,7 +114,7 @@ async fn init_registry() -> RwLock<ProviderRegistry> {
         );
         registry.register::<GeminiCliProvider>(false);
         registry.register_with_inventory::<GeminiOAuthProvider>(
-            true,
+            false,
             Some(registrations::gemini_oauth_inventory()),
         );
         registry.register_with_inventory::<GithubCopilotProvider>(