feat(git-ai): add Git AI plugin to marketplace

[amondnet]

Summary

• Add Git AI plugin to the Claude Code plugin marketplace
• Install three skills via skills.sh: ask, git-ai-search, and prompt-analysis
• Update .claude-plugin/marketplace.json with the new plugin entry
• Update README.md with Git AI section under Built-in Plugins
• Update release-please-config.json with plugins/git-ai package

Test plan

• Verify marketplace.json entry is valid (claude plugin validate .claude-plugin/marketplace.json)
• Confirm plugin installs correctly via /plugin install git-ai@pleaseai
• Check that all three skills (ask, git-ai-search, prompt-analysis) are accessible after installation

---

Summary by cubic

Add git-ai to the plugin marketplace to track AI-authored code and restore original prompt context in repos. Includes three skills (ask, git-ai-search, prompt-analysis) with docs and release setup.

• New Features
  • Registered in .claude-plugin/marketplace.json and added README install: /plugin install git-ai@pleaseai.
  • Added skills and docs under plugins/git-ai/.agents/skills/, plus manifest at plugins/git-ai/.claude-plugin/plugin.json and skills-lock.json.
  • Registered plugins/git-ai in release-please-config.json for versioning.

^{Written for commit dc14b93. Summary will update on new commits.}

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Project	Deployment	Actions	Updated (UTC)
claude-code-plugins	Ready	Preview, Comment	Apr 12, 2026 5:23pm

[cubic-dev-ai]

No issues found across 8 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

Architecture diagram

sequenceDiagram
    participant User
    participant Claude as Claude Code CLI
    participant Registry as Marketplace (marketplace.json)
    participant Plugin as Git AI Plugin (Skills)
    participant CLI as git-ai CLI Tool
    participant DB as Git Repo / prompts.db

    Note over User,DB: NEW: Plugin Installation Flow
    User->>Claude: /plugin install git-ai@pleaseai
    Claude->>Registry: NEW: Lookup 'git-ai' source path
    Registry-->>Claude: Return source (./plugins/git-ai)
    Claude->>Plugin: Load skills (ask, search, analysis)
    Claude-->>User: Installation successful

    Note over User,DB: NEW: Skill Execution Flow (Example: '/ask')
    User->>Claude: /ask "Why was this code written?"
    Claude->>Plugin: Invoke 'ask' skill
    
    Plugin->>Plugin: Extract file/line context from selection
    
    rect rgb(240, 240, 240)
        Note right of Plugin: Subagent Orchestration
        Plugin->>Claude: Spawn subagent (max_turns: 4)
        Claude->>CLI: NEW: git-ai search --file [path] --verbose
        CLI->>DB: Query Git notes/metadata
        DB-->>CLI: Return AI prompt history
        CLI-->>Claude: JSON/Text transcript
        Claude-->>Plugin: Aggregated context
    end

    Plugin-->>User: Response in "Author Agent" voice

    Note over User,DB: NEW: Data Analysis Flow (Example: 'prompt-analysis')
    User->>Claude: "What is my AI code acceptance rate?"
    Claude->>Plugin: Invoke 'prompt-analysis' skill
    Plugin->>CLI: NEW: git-ai prompts exec "SELECT..."
    CLI->>DB: Query local SQLite (prompts.db)
    DB-->>CLI: Row data
    CLI-->>Plugin: Query results
    Plugin-->>User: Acceptance rate metrics synthesis

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[gemini-code-assist]

Code Review

This pull request introduces the git-ai plugin, which includes new skills for code tracking, searching AI conversation history, and prompt analysis. It also updates the marketplace configuration and README to include the new tool. Several issues were identified regarding repository policy: the skill definition files under .agents/skills/ should not be modified directly as they are managed by skills-lock.json and must be updated in the upstream repository. Additionally, the plugin.json file is missing the required author field to credit the upstream organization.