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.

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

packages/coding-agent/test/tool-execution-component.test.ts

@@ -1,6 +1,6 @@
 import { Text, type TUI } from "@mariozechner/pi-tui";
-import { Type } from "@sinclair/typebox";
 import stripAnsi from "strip-ansi";
+import { Type } from "typebox";
 import { beforeAll, describe, expect, test } from "vitest";
 import type { ToolDefinition } from "../src/core/extensions/types.js";
 import { type BashOperations, createBashToolDefinition } from "../src/core/tools/bash.js";