Setup DRY

One-time guided setup. Adds DRY violation detection at both CI and pre-commit hook level. Defaults to setting up both -- confirms with user before proceeding.

Workflow

Step 1 -- Detect project setup

• Identify primary language(s) from file extensions and config files
• Identify source directories (e.g. src/, lib/, app/)
• Check for existing duplication detection tools (e.g. jscpd, PMD CPD)
• Check if .github/workflows/ already exists

Present findings to user for confirmation before proceeding.

If detection is ambiguous, use AskUserQuestion to clarify:

• If language can't be determined: ask what language(s) the project uses
• If no clear source directories: ask which directories contain production code (vs. config, scripts, etc.)
• If existing duplication tools found: ask if they want to replace or run alongside