release: fix bundled channel smoke self-resolution

[linfangw]

Summary

• fix prepack bundled-channel smoke when built extension entries import @qverisai/qverisbot/plugin-sdk/*
• create a temporary package self-reference under node_modules/@qverisai/qverisbot during smoke so repo-root dist imports resolve like an installed package
• add a regression test for the rewritten bundled entry import path

Verification

• node scripts/run-vitest.mjs run test/scripts/test-built-bundled-channel-entry-smoke.test.ts
• node scripts/test-built-bundled-channel-entry-smoke.mjs
• commit hook pnpm check

[gemini-code-assist]

Code Review

This pull request refactors the smoke test script for bundled channel entries to be more modular and includes a new test suite. Key changes include the introduction of createBundledChannelSmokeInstallView to handle package self-referencing via symlinks and the export of core functions for unit testing. Review feedback suggests using a more compatible alternative to toReversed() for older Node.js environments and improving the robustness of resource tracking to ensure proper cleanup if errors occur during setup.