Phase 2: New developer tools — grep, search, code analysis

[chubes4]

Summary

Phase 2 expands Data Machine Code beyond the extracted functionality with new developer-oriented tools that don't exist yet in core. These are the tools that make DM Code a real coding agent extension.

New Tools

Code Search

• grep tool — search file contents across workspace repos using regex
• find / glob tool — find files by name/pattern across repos
• ripgrep wrapper — fast content search with context lines
• Search results as structured data (file, line, match, context)

Code Analysis

• Language detection per file/repo
• Line count / file stats tool
• Diff summary tool — summarize changes between refs
• Branch comparison tool

Enhanced Git Operations

• git checkout — create/switch branches
• git stash — stash/pop/list stashed changes
• git merge — merge branches (with conflict detection)
• git rebase — rebase onto target branch
• git cherry-pick — pick specific commits
• PR creation via GitHub API (not just issues)
• PR review/approve/request-changes via API

File Operations

• Bulk file read (multiple files in one call)
• File search-and-replace across multiple files
• Tree view — full directory tree with depth control
• File permissions/ownership info

Design Principles

• All new tools register via datamachine_tools filter
• All new abilities register via Abilities API
• CLI commands under wp datamachine-code
• Read-only tools exposed via REST, mutating tools CLI/agent-only
• Security: path containment, allowlists, audit logging