fix: tighten internal callback types

[jun0315]

Description

Tighten two internal callback type definitions to avoid unnecessary any[] usage without changing runtime behavior or public APIs.

• Narrow the local browser eval helper function type from any[] to never[], since the function is serialized rather than invoked in Node.

• CI / build / tooling

Checklist

• I ran the checks relevant to this PR

• I updated tests or docs if needed

• I included output or screenshots when useful

• Added doc page under docs/adapters/ (if new adapter)

• Updated docs/adapters/index.md table (if new adapter)

• Updated sidebar in docs/.vitepress/config.mts (if new adapter)

• Updated README.md / README.zh-CN.md when command discoverability changed

• Used positional args for the command's primary subject unless a named flag is clearly better

• Normalized expected adapter failures to CliError subclasses instead of raw Error

Screenshots / Output

Result: typecheck passed; 3 test files passed, 186 tests passed.