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Greptile Summary

Adds bin/setup — a new bash dev-setup script that validates ruby, bundle, node, and yarn, then runs bundle install and yarn install, routing all commands through bin/conductor-exec (mise/version-manager support) when present.

• The PR checklist leaves "Update CHANGELOG file" unchecked; per project guidelines in CLAUDE.md, new user-visible features should have a CHANGELOG.md entry.

Confidence Score: 5/5

• Safe to merge; the script is correct and only adds a convenience dev-setup helper with no runtime impact on the gem itself.
• The script uses safe bash practices (set -euo pipefail, proper quoting, executable checks), all four tool checks are sound, the conductor-exec routing is consistent between checks and installs, and the file ends with a required trailing newline. The only open item is a missing CHANGELOG entry, which is a P2 guideline note.
• No files require special attention.

Important Files Changed

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A([bin/setup]) --> B[Set ROOT_DIR & cd to it]
    B --> C{conductor-exec\nexecutable?}
    C -->|yes| D[route via conductor-exec]
    C -->|no| E[run command directly]
    D --> F[mise exec available?]
    F -->|yes| G[mise exec -- cmd]
    F -->|no| H[direct exec]

    B --> I[ensure_tool ruby]
    I --> J[ensure_tool bundle]
    J --> K[ensure_tool node]
    K --> L[ensure_tool yarn]
    L --> M[bundle install]
    M --> N[yarn install]
    N --> O([done])

    style C fill:#f9f,stroke:#333
    style D fill:#bbf,stroke:#333
    style E fill:#bfb,stroke:#333

_{Reviews (1): Last reviewed commit: "Add bin/setup for development deps" | Re-trigger Greptile}