Summary

• Refuse duplicate same-remote primary clones by default, with reuse/refresh/worktree guidance.
• Add explicit allow_duplicate_remote / --allow-duplicate-remote for intentional release/proof primary checkouts.
• Surface primary freshness in workspace list/show/worktree/hygiene output using local refs without fetching.
• Roll back newly-created local branches when stale worktree creation is rejected.
• Update generated AGENTS guidance and smoke coverage for duplicate clone and stale primary behavior.

Testing

• php tests/smoke-workspace-clone-ux.php
• php tests/smoke-workspace-hygiene-report.php
• php tests/smoke-worktree-default-branch-guard.php
• php tests/smoke-workspace-alias-tools.php
• php tests/smoke-workspace-tool-transcript-contract.php
• PHP syntax checks for edited files
• git diff --check

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Investigated the stale-primary workflow, drafted the implementation and smoke coverage, ran iterative review passes, and verified targeted tests. Chris remains responsible for review and merge.