Add tsgo-backed typecheck targets across packages (#3130)

## Summary
- Add `tsgo`-based `typecheck` scripts and matching `typecheck:tsc`
fallback scripts across the TypeScript packages.
- Wire the new `typecheck:tsc` task into Turbo so package-level
typecheck checks can run consistently.
- Update workspace and lockfile metadata to include
`@typescript/native-preview` and the new toolchain wiring.
- Remove redundant `baseUrl` settings from package tsconfig files where
they are no longer needed.

## Testing
- Not run (changes are limited to package scripts, tsconfig wiring, and
lockfile updates).
- Not run: `pnpm typecheck:tsc`
- Not run: `pnpm build`
- Not run: package-specific `typecheck` / `typecheck:tsc` commands in
`ts/packages/cli`, `ts/packages/core`, `ts/packages/json-schema-to-zod`,
and `ts/packages/providers/mastra`.

Author: CryogenicPlanet

package.json

@@ -26,6 +26,7 @@
     "test:e2e:cloudflare": "turbo test:e2e:cloudflare --filter='@e2e-tests/cf-*'",
     "test:ui": "vitest --ui",
     "typecheck": "turbo typecheck --filter=./ts/packages/**",
+    "typecheck:tsc": "turbo typecheck:tsc --filter=./ts/packages/**",
     "lint": "eslint ts/packages --ext .ts,.tsx",
     "lint:packages": "eslint ts/packages --ext .ts,.tsx",
     "lint:fix": "eslint . --ext .ts,.tsx --fix",
@@ -55,6 +56,7 @@
     "@composio/openai": "workspace:*",
     "@types/bun": "^1.3.6",
     "@types/node": "^22.15.18",
+    "@typescript/native-preview": "catalog:",
     "@vitest/ui": "^3.1.4",
     "eslint": "^9.25.1",
     "globals": "^16.0.0",

pnpm-lock.yaml

@@ -31,6 +31,7 @@ catalog:
   '@effect/vitest': ^0.27.0
   '@mastra/core': ^1.0.4
   '@modelcontextprotocol/sdk': ^1.25.2
+  '@typescript/native-preview': 7.0.0-dev.20260403.1
   ai: ^6.0.27
   effect: ^3.19.15
   hono: ^4.11.4