Add Gemini 3 preview models to google-gemini-cli provider

- Add gemini-3-pro-preview and gemini-3-flash-preview to Cloud Code Assist
- Handle thinkingLevel config for Gemini 3 (vs thinkingBudget for Gemini 2.x)
- Gemini 3 Pro: LOW/HIGH levels only
- Gemini 3 Flash: all four levels (MINIMAL/LOW/MEDIUM/HIGH)

packages/ai/src/models.generated.ts

@@ -3225,7 +3225,7 @@ export const MODELS = {
 			cost: {
 				input: 0.24,
 				output: 0.38,
-				cacheRead: 0.11,
+				cacheRead: 0.02,
 				cacheWrite: 0,
 			},
 			contextWindow: 163840,
@@ -6854,6 +6854,40 @@ export const MODELS = {
 			contextWindow: 1048576,
 			maxTokens: 8192,
 		} satisfies Model<"google-gemini-cli">,
+		"gemini-3-pro-preview": {
+			id: "gemini-3-pro-preview",
+			name: "Gemini 3 Pro Preview (Cloud Code Assist)",
+			api: "google-gemini-cli",
+			provider: "google-gemini-cli",
+			baseUrl: "https://cloudcode-pa.googleapis.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 1048576,
+			maxTokens: 65535,
+		} satisfies Model<"google-gemini-cli">,
+		"gemini-3-flash-preview": {
+			id: "gemini-3-flash-preview",
+			name: "Gemini 3 Flash Preview (Cloud Code Assist)",
+			api: "google-gemini-cli",
+			provider: "google-gemini-cli",
+			baseUrl: "https://cloudcode-pa.googleapis.com",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 1048576,
+			maxTokens: 65535,
+		} satisfies Model<"google-gemini-cli">,
 	},
 	"google-antigravity": {
 		"gemini-3-pro-high": {