ci: add CodSpeed benchmark coverage

[simplyme0823]

Summary

• Added a benchmark-go job in CI to run CodSpeed walltime benchmarks for ./internal/linter
• Added a benchmark-cli job in CI to run CLI walltime benchmarks through pnpm run bench:cli
• Updated the done job so release-branch benchmark jobs are required alongside the existing CI jobs
• Added local benchmark entrypoints in package.json, including pnpm run bench:go and pnpm run bench:cli
• Automatically trigger the benchmark when the branch name matches chore/release-xxx.
• Support manually triggering the benchmark.

Related Links

see example: chore/release-xxx 👉 #748

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

[gemini-code-assist]

Code Review

This pull request introduces a suite of benchmarks for workspace ownership and various linter operations, including syntax, type-aware, and semantic diagnostic checks. It also adds a CodSpeed badge to the README. The review feedback highlights several opportunities to improve benchmark accuracy by moving closure allocations and slice initializations outside of the timing loops to reduce measurement noise. Additionally, it identifies a potential race condition in global benchmark sinks that should be addressed using atomic operations to ensure thread safety during parallel execution.

[codspeed-hq]

Congrats! CodSpeed is installed 🎉

🆕 5 new benchmarks were detected.

You will start to see performance impacts in the reports once the benchmarks are run from your default branch.

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Detected benchmarks

• BenchmarkLinterSyntaxRules (WallTime): 4.6 ms
• BenchmarkLinterTypeAwareRules (WallTime): 5.3 ms
• BenchmarkWorkspaceOwnership (WallTime): 62.2 µs
• BenchmarkLinterSemanticDiagnostics (WallTime): 4.3 ms
• BenchmarkLinterProgramDispatch (WallTime): 7.6 µs

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