Fixes AUDIT.md's B6: nothing wrote a TASK.md into a worktree, so
continuity.ValidatePickup had no caller and no file to check.
- continuity.RenderTaskFile/TaskFileHash: render and hash the immutable
§6.2 TASK.md from a domain.Task.
- GitWorktrees.Create writes and commits TASK.md into every freshly
created worktree (must be committed, not dirty, for ScratchCommit's
immutability check and for a stable hash).
- Coordinator.Start now runs continuity.ValidatePickup (anchor SHA,
dirty-file hashes, TASK.md hash) against the real worktree before
bootstrapping a successor onto a handoff_ref, and blocks the task
instead of bootstrapping on a validation failure.
Still open from Phase 4: handoff production (agent writing the real
handoff; Release still refuses per B5), ScratchCommit wiring before
release, and the §6.2 bootstrap-prompt rewrite — see AUDIT.md.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W1rkJ2hBMybnJctPbcy4tT
Pre-existing uncommitted work found at session start: rotation now emits
anchor_sha on TaskReleased (previously silently dropped by store.Append
validation), multi-repo Gitea provider support, per-project git worktree
roots, and associated test coverage. Committing as a checkpoint before
starting remediation work tracked in AUDIT.md.