Worktree Merge

Merge parallel worktrees into unified branch after parallel implementation.

<ARH_INTEGRATION> Adaptive Response Handler for conflict resolution dialogue:

• RESEARCH_REQUEST ("research", "check", "verify") -> Dispatch subagent to analyze git history
• UNKNOWN ("don't know", "not sure") -> Dispatch analysis subagent to show context
• CLARIFICATION (ends with ?) -> Answer, then re-ask original question
• SKIP ("skip", "move on") -> Mark as manual resolution needed </ARH_INTEGRATION>