Revert "Revert "Update gemini 2.5 models to GA variants (#425)" (#429)" (#437)

e2e-tests/snapshots/context_manage.spec.ts_manage-context---smart-context---auto-includes-only-1.txt

 {
   "body": {
-    "model": "gemini/gemini-2.5-pro-preview-05-06",
+    "model": "gemini/gemini-2.5-pro",
     "max_tokens": 65535,
     "temperature": 0,
     "messages": [

e2e-tests/snapshots/context_manage.spec.ts_manage-context---smart-context-1.txt

 {
   "body": {
-    "model": "gemini/gemini-2.5-pro-preview-05-06",
+    "model": "gemini/gemini-2.5-pro",
     "max_tokens": 65535,
     "temperature": 0,
     "messages": [

e2e-tests/snapshots/context_manage.spec.ts_manage-context---smart-context-3.txt

 {
   "body": {
-    "model": "gemini/gemini-2.5-pro-preview-05-06",
+    "model": "gemini/gemini-2.5-pro",
     "max_tokens": 65535,
     "temperature": 0,
     "messages": [

e2e-tests/snapshots/context_manage.spec.ts_manage-context---smart-context-4.txt

 {
   "body": {
-    "model": "gemini/gemini-2.5-pro-preview-05-06",
+    "model": "gemini/gemini-2.5-pro",
     "max_tokens": 65535,
     "temperature": 0,
     "messages": [

e2e-tests/snapshots/engine.spec.ts_auto-should-send-message-to-gateway-1.txt

 {
   "body": {
-    "model": "gemini/gemini-2.5-flash-preview-05-20",
+    "model": "gemini/gemini-2.5-flash",
     "max_tokens": 8000,
     "temperature": 0,
     "thinking": {

e2e-tests/snapshots/engine.spec.ts_send-message-to-engine-1.txt

 {
   "body": {
-    "model": "gemini/gemini-2.5-pro-preview-05-06",
+    "model": "gemini/gemini-2.5-pro",
     "max_tokens": 65535,
     "temperature": 0,
     "messages": [

e2e-tests/snapshots/gateway.spec.ts_gemini-2-5-flash-1.txt

 {
   "body": {
-    "model": "gemini/gemini-2.5-flash-preview-05-20",
+    "model": "gemini/gemini-2.5-flash",
     "max_tokens": 65535,
     "temperature": 0,
     "thinking": {

src/ipc/shared/language_model_helpers.ts

@@ -102,9 +102,9 @@ export const MODEL_OPTIONS: Record<string, ModelOption[]> = {
   google: [
     // https://ai.google.dev/gemini-api/docs/models#gemini-2.5-pro-preview-03-25
     {
-      name: "gemini-2.5-pro-preview-05-06",
+      name: "gemini-2.5-pro",
       displayName: "Gemini 2.5 Pro",
-      description: "Preview version of Google's Gemini 2.5 Pro model",
+      description: "Google's Gemini 2.5 Pro model",
       // See Flash 2.5 comment below (go 1 below just to be safe, even though it seems OK now).
       maxOutputTokens: 65_536 - 1,
       // Gemini context window = input token + output token
@@ -113,10 +113,9 @@ export const MODEL_OPTIONS: Record<string, ModelOption[]> = {
     },
     // https://ai.google.dev/gemini-api/docs/models#gemini-2.5-flash-preview
     {
-      name: "gemini-2.5-flash-preview-05-20",
+      name: "gemini-2.5-flash",
       displayName: "Gemini 2.5 Flash",
-      description:
-        "Preview version of Google's Gemini 2.5 Flash model (free tier available)",
+      description: "Google's Gemini 2.5 Flash model (free tier available)",
       // Weirdly for Vertex AI, the output token limit is *exclusive* of the stated limit.
       maxOutputTokens: 65_536 - 1,
       // Gemini context window = input token + output token

src/ipc/utils/get_model_client.ts

@@ -20,11 +20,11 @@ const dyadGatewayUrl = process.env.DYAD_GATEWAY_URL;
 const AUTO_MODELS = [
   {
     provider: "google",
-    name: "gemini-2.5-flash-preview-05-20",
+    name: "gemini-2.5-flash",
   },
   {
     provider: "anthropic",
-    name: "claude-3-7-sonnet-latest",
+    name: "claude-sonnet-4-20250514",
   },
   {
     provider: "openai",