docs: clarify Bun setup without duplicate steps

[YuanyuanMa03]

Summary

• clarify Bun post-install steps without duplicating the installer output
• explain where to run Bun setup/check commands versus project commands
• keep README.md and README_EN.md aligned

Test Plan

• docs-only change
• verified PR diff only includes README.md and README_EN.md

Summary by CodeRabbit

• Documentation
  • Improved Bun installation instructions with clearer PATH configuration guidance for different shells (zsh, bash, PowerShell).
  • Added clarification on command execution locations: installation and build steps require the repository root containing package.json, while general Bun commands work from any directory.
  • Enhanced installation verification steps.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: ffbbd659-91b3-422f-af1f-11d5121e89df

📥 Commits

Reviewing files that changed from the base of the PR and between d09f363 and 017c251.

📒 Files selected for processing (2)

• README.md
• README_EN.md

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📝 Walkthrough

Walkthrough

Documentation updates to Bun installation instructions in both Chinese and English READMEs, including PATH configuration clarifications, shell-specific reload commands, enhanced verification steps, and a new section detailing where commands can be executed.

Changes

Cohort / File(s)	Summary
Bun Installation Documentation README.md, README_EN.md	Restructured post-installation steps with shell-specific PATH reloading instructions (zsh exec /bin/zsh, bash source ~/.bashrc, PowerShell restart). Enhanced verification to include both bun --help and bun --version. Added new section clarifying command execution locations and updated dependency installation example with cd into repository root.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• docs: 添加 Bun 安装详细说明 #341 — Related modifications to Bun installation instructions in README and README_EN files with similar structural updates to post-install steps and verification guidance.

Poem

🐰 Documentation hops with care,
Bun's path now crystal clear,
Shell commands reload with flair,
Instructions now sincere! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title accurately describes the main change: clarifying Bun setup instructions while removing duplicate steps in the README files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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