Pre-merge mergeability check via `git merge-tree --write-tree` (dry-run, no side effects). When conflicts exist the "Merge & Push" button is disabled and a ConflictResolutionPanel shows conflict files with options to resolve manually or spawn a conflict-resolution agent. Agent questions appear inline via QuestionForm; on completion the mergeability re-checks automatically. New server-side: MergeabilityResult type, BranchManager.checkMergeability, conflict-resolution prompt, checkInitiativeMergeability query, spawnConflictResolutionAgent mutation, getActiveConflictAgent query. New frontend: useConflictAgent hook, ConflictResolutionPanel component, mergeability badge + panel integration in InitiativeReview.
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896 B