Rename /ship skill to /submit-for-review across all skills and adapters

[sebastientaggart]

The /ship skill should be renamed to /submit-for-review to better describe what it does. This is a pure rename — no behavior changes.

All skill files, documentation, cross-references from other skills, and generated adapter files need to be updated. The sync.sh script will regenerate adapter-specific files after the source skills are renamed.

[sebastientaggart]

Agent Implementation Notes

Rename: skills/ship.md → skills/submit-for-review.md

Files to rename:

• skills/ship.md → skills/submit-for-review.md
• docs/skills/ship.md → docs/skills/submit-for-review.md

Source files to update /ship → /submit-for-review references:

• skills/start.md — tells user to run /ship when done
• skills/setup.md — table and config notes
• skills/review.md — merging references
• skills/qa.md — trunk mode note
• skills/review-agent.md — description
• sync.sh — help text example
• README.md, AGENTS.md
• docs/index.md, docs/customization.md, docs/adapters.md, docs/branching.md, docs/config-reference.md

Generated adapter files (regenerated by sync.sh):

• .claude/commands/ship.md → .claude/commands/submit-for-review.md
• .cursor/rules/ship.mdc → .cursor/rules/submit-for-review.mdc
• .agents/skills/ship/ → .agents/skills/submit-for-review/
• .gemini/skills/ship/ → .gemini/skills/submit-for-review/

Exclusions: "ship to production" in release.md is a verb, not the skill name — leave unchanged.

Process: Edit source files, run ./sync.sh, verify with grep.