build(deps): migrated from @types/node to @types/bun for Bun runtime compatibility

- Migrated from @types/node to @types/bun across all packages to align with Bun runtime.
- Removed @types/node and bun-types from root and package-specific devDependencies.
- Updated tsconfig.base.json to remove 'node' from types array and 'DOM.AsyncIterable' from lib, keeping only Bun-compatible configurations.
- Simplified ReadableStream type annotation in openai-codex-stream.test.ts by removing explicit Uint8Array generic parameter.

package.json

@@ -40,9 +40,7 @@
 		"@biomejs/biome": "^2.3.14",
 		"@bufbuild/protoc-gen-es": "^2.11.0",
 		"@types/bun": "^1.3.8",
-		"@types/node": "^25.2.0",
 		"@typescript/native-preview": "^7.0.0-dev.20260203.1",
-		"bun-types": "^1.3.8",
 		"concurrently": "^9.2.1",
 		"lint-staged": "^16.2.7",
 		"prettier": "^3.8.1",