v0.6.12

Fixed

• Flow entry paths now detect and rebuild a missing session worktree for an existing work branch under multi_session.enabled: true — when a work branch existed locally but its session worktree (.rite/worktrees/issue-{N}) was absent, /rite:resume, /rite:pr:review, /rite:pr:iterate, and /rite:pr:fix treated the branch as nonexistent and silently fell back to develop, leaving PR changes unreadable from the work tree (degraded operation). A new ensure_session_worktree helper in lib/worktree-git.sh detects the "branch exists ∧ session worktree absent" case and rebuilds the worktree (local: git worktree add; remote: fetch + --track). (#1676, #1677)