When all phases complete, the initiative now transitions to
pending_review status instead of silently stopping. The user
reviews the full initiative diff and chooses:
- Push Branch: push cw/<name> to remote for PR workflows
- Merge & Push: merge into default branch and push
Changes:
- Schema: Add pending_review to initiative status enum
- BranchManager: Add pushBranch port + SimpleGit adapter
- Events: initiative:pending_review, initiative:review_approved
- Orchestrator: checkInitiativeCompletion + approveInitiative
- tRPC: getInitiativeReviewDiff, getInitiativeReviewCommits,
getInitiativeCommitDiff, approveInitiativeReview
- Frontend: InitiativeReview component in ReviewTab
- Subscriptions: Add initiative events + missing preview/conversation
event types and subscription procedures
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