feat(deps): added pi.zod exports and removed TypeBox package exports

- Added canonical `pi.zod` schema API exports and removed TypeBox package exports/imports.
- Migrated Tool schema typing from TypeBox to shared `TSchema`/Zod flow with legacy TypeBox compatibility.
- Updated AI provider adapters and MCP/agent builders to convert tool params through `toolWireSchema()`.
- Reworked schema validation from AJV to Zod-safe parsing with `fromTypeBox`, `toolWireSchema`, and meta schema checks.

docs/resolve-tool-runtime.md

@@ -65,8 +65,8 @@ const factory: CustomToolFactory = (pi) => ({
   name: "batch_rename_preview",
   label: "Batch Rename Preview",
   description: "Previews renames and defers commit to resolve",
-  parameters: pi.typebox.Type.Object({
-    files: pi.typebox.Type.Array(pi.typebox.Type.String()),
+  parameters: pi.zod.object({
+    files: pi.zod.array(pi.zod.string()),
   }),
 
   async execute(_toolCallId, params) {