fix(typebox): migrate to v1 with extension compat (#3474)

* fix(typebox): migrate to v1 with extension compat

Replace AJV-based validation with TypeBox-native validation, keep legacy extension imports working (including @sinclair/typebox/compiler), and restore coercion for serialized/plain JSON schemas.

This change closes #3112.

* fix(typebox): use canonical imports and harden coercion

Switch first-party code to canonical typebox imports while retaining legacy extension aliases in the loader.

Remove obsolete runtime codegen guards, expand serialized JSON-schema coercion coverage, and update related tests and fixtures.

Fixes #3112.

---------

Co-authored-by: Mario Zechner <badlogicgames@gmail.com>

packages/coding-agent/vitest.config.ts

@@ -1,14 +1,26 @@
-import { defineConfig } from 'vitest/config';
+import { fileURLToPath } from "node:url";
+import { defineConfig } from "vitest/config";
+
+const aiSrcIndex = fileURLToPath(new URL("../ai/src/index.ts", import.meta.url));
+const aiSrcOAuth = fileURLToPath(new URL("../ai/src/oauth.ts", import.meta.url));
+const agentSrcIndex = fileURLToPath(new URL("../agent/src/index.ts", import.meta.url));
 
 export default defineConfig({
-  test: {
-    globals: true,
-    environment: 'node',
-    testTimeout: 30000, // 30 seconds for API calls
-    server: {
-      deps: {
-        external: [/@silvia-odwyer\/photon-node/],
-      },
-    },
-  },
+	test: {
+		globals: true,
+		environment: "node",
+		testTimeout: 30000,
+		server: {
+			deps: {
+				external: [/@silvia-odwyer\/photon-node/],
+			},
+		},
+	},
+	resolve: {
+		alias: [
+			{ find: /^@mariozechner\/pi-ai$/, replacement: aiSrcIndex },
+			{ find: /^@mariozechner\/pi-ai\/oauth$/, replacement: aiSrcOAuth },
+			{ find: /^@mariozechner\/pi-agent-core$/, replacement: agentSrcIndex },
+		],
+	},
 });