fix(antigravity): fixes the tests for antigravitiy opus (#1369)

* feat(antigravity): update model costs and tokens, migrate compaction tests to Claude 4.6

- Update model costs for various models in `models.generated.ts` to reflect the latest pricing.
- Update maxTokens for certain models.
- Migrate compaction tests from `claude-opus-4-5-thinking` to `claude-opus-4-6-thinking` in `compaction-thinking-model.test.ts`.

* fix: remove unnecessary peer dependencies in package-lock.json

This commit removes the `peer: true` flag from several dependencies in `package-lock.json`. These dependencies (lit, tailwind-merge, tailwindcss, picomatch, @tailwindcss/typescript, vite, picomatch) do not need to be explicitly marked as peer dependencies in this context, as they are already managed as regular dependencies. Removing the `peer: true` flag simplifies the dependency graph and avoids potential conflicts during installation.

packages/ai/src/models.generated.ts

@@ -10415,13 +10415,13 @@ export const MODELS = {
 			reasoning: true,
 			input: ["text"],
 			cost: {
-				input: 0.28,
+				input: 0.3,
 				output: 1.2,
-				cacheRead: 0.14,
+				cacheRead: 0.15,
 				cacheWrite: 0,
 			},
-			contextWindow: 196608,
-			maxTokens: 196608,
+			contextWindow: 204800,
+			maxTokens: 131072,
 		} satisfies Model<"anthropic-messages">,
 		"minimax/minimax-m2.1-lightning": {
 			id: "minimax/minimax-m2.1-lightning",