chore: 添加 /ship skill，一键 commit + push + create PR

[lishuceo]

Summary

• 新增 .claude/skills/ship/SKILL.md，用户输入 /ship 即可自动执行 commit → push → create PR 全流程
• 支持 $ARGUMENTS 传入变更描述作为 commit message 基础
• 自动检测 main 分支并创建新分支，防止直推

Test plan

• 在 Claude Code 中输入 /ship 验证完整流程
• 输入 /ship 描述信息 验证参数传递

🤖 Generated with Claude Code

[claude]

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[claude]

Claude finished @lishuceo's task in 1m 9s —— View job

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PR Review: /ship skill

• Read changed files and understand the diff
• Review the skill file for bugs, security, and correctness
• Post review summary

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✅ Approved — clean, well-structured skill with no issues at or above the reporting threshold.

Assessment

This PR adds a single file (.claude/skills/ship/SKILL.md) that defines a procedural skill to automate commit → push → create PR. The skill is well-written:

• Security: Explicitly prohibits git add . / git add -A (line 22) and committing .env or credentials (line 50). No force-push usage. These are the right guardrails.
• Safety: Detects when on main and creates a new branch first (line 29), preventing accidental direct pushes.
• Conventions: Follows conventional commits format and the project's <type>: <中文描述> style.
• disable-model-invocation: true: Correct choice — this is a step-by-step procedural skill, not one that needs model reasoning about whether to invoke.

Minor observations (below reporting threshold, for awareness only)

• The main branch check (line 29) is hardcoded — repos with master or other default branches would need adjustment. In practice, this repo uses main, so it's fine here.
• No explicit handling for "PR already exists for this branch" — but the error-handling instruction on line 52 ("出错时停下来说明原因") covers this adequately.

No changes requested.