Add Rig native model providers

app/src/settings/ai.rs

@@ -926,6 +926,13 @@ pub enum OpenAIProviderKind {
     OpenAICompatible,
     /// The ChatGPT subscription backend, authenticated with ChatGPT OAuth.
     ChatGPTSubscription,
+    /// Anthropic's native Messages API.
+    Anthropic,
+    /// Google's Gemini API.
+    Gemini,
+    /// Google's Gemini models hosted through Vertex AI.
+    #[serde(rename = "vertex_ai", alias = "vertex_a_i")]
+    VertexAI,
 }
 
 /// Configuration for a single OpenAI-compatible provider endpoint.
@@ -951,6 +958,12 @@ pub struct OpenAIProviderConfig {
     #[schemars(description = "API key for this endpoint (optional if the proxy handles auth).")]
     pub api_key: Option<String>,
     #[serde(default)]
+    #[schemars(description = "Google Cloud project ID for Vertex AI providers.")]
+    pub project_id: Option<String>,
+    #[serde(default)]
+    #[schemars(description = "Google Cloud location for Vertex AI providers.")]
+    pub location: Option<String>,
+    #[serde(default)]
     #[schemars(description = "Models available from this provider.")]
     pub models: Vec<OpenAIModelConfig>,
 }
@@ -1021,6 +1034,8 @@ pub(crate) fn default_chatgpt_provider() -> OpenAIProviderConfig {
         name: "ChatGPT Subscription".to_string(),
         base_url: String::new(),
         api_key: None,
+        project_id: None,
+        location: None,
         models: default_chatgpt_models(),
     }
 }
@@ -1035,6 +1050,8 @@ fn default_openai_providers() -> Vec<OpenAIProviderConfig> {
             // Credentials are deliberately never committed. Set this locally in
             // ~/.galaxy/settings.toml before sending a request.
             api_key: None,
+            project_id: None,
+            location: None,
             models: vec![OpenAIModelConfig {
                 model_id: INITIAL_RIG_MODEL_ID.to_string(),
                 display_name: "Codex GPT-5.6 SOL (xhigh)".to_string(),

app/src/settings/ai_tests.rs

@@ -423,6 +423,34 @@ fn initial_litellm_provider_maps_codex_model_to_rig_without_a_committed_key() {
     assert!(instant.reasoning_efforts.is_empty());
 }
 
+#[test]
+fn native_provider_settings_roundtrip_with_vertex_configuration() {
+    let provider: OpenAIProviderConfig = serde_json::from_value(serde_json::json!({
+        "kind": "vertex_ai",
+        "enabled": true,
+        "name": "Vertex production",
+        "base_url": "",
+        "project_id": "galaxy-project",
+        "location": "us-central1",
+        "models": []
+    }))
+    .expect("Vertex provider settings should deserialize");
+
+    assert_eq!(provider.kind, OpenAIProviderKind::VertexAI);
+    assert_eq!(provider.project_id.as_deref(), Some("galaxy-project"));
+    assert_eq!(provider.location.as_deref(), Some("us-central1"));
+
+    let legacy: OpenAIProviderConfig = serde_json::from_value(serde_json::json!({
+        "name": "Legacy provider",
+        "base_url": "http://localhost:4000/v1",
+        "models": []
+    }))
+    .expect("Legacy provider settings should remain compatible");
+    assert_eq!(legacy.kind, OpenAIProviderKind::OpenAICompatible);
+    assert_eq!(legacy.project_id, None);
+    assert_eq!(legacy.location, None);
+}
+
 #[test]
 fn codex_litellm_model_infers_missing_system_message_capability() {
     let mut model = default_openai_providers().remove(0).models.remove(0);