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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Agents can run in isolated worktrees with a separate Paperclip runtime. > - Runtime provisioning uses a Bash script on macOS hosts. > - macOS ships Bash 3.2, where an empty array expansion fails under `set -u`. > - The source-config argument array is empty when the base workspace already has a config. > - This pull request guards that expansion and tests the normal base-config path on Bash 3.2. > - The benefit is that managed worktree provisioning no longer fails before database seeding. ## Linked Issues or Issue Description No public GitHub issue exists for this problem. PR #11752 added the conditional source-config argument that exposed the failure. **What happened?** `scripts/provision-worktree-runtime.sh` expands an empty `source_config_args` array while `set -u` is active. Bash 3.2 reports `source_config_args[@]: unbound variable` and stops provisioning when the registered base workspace already has `.paperclip/config.json`. **Expected behavior** Runtime provisioning must call `worktree ensure-seeded` without a source override when the base workspace config exists. It must work with the Bash 3.2 version that macOS supplies. **Steps to reproduce** 1. Use macOS system Bash 3.2. 2. Create a base workspace with `.paperclip/config.json`. 3. Run `scripts/provision-worktree-runtime.sh` with `set -u` active in the script. 4. Observe the unbound-variable error before `worktree ensure-seeded` runs. **Paperclip version or commit** Reproduced on `origin/master` before this change. **Deployment mode** Local managed worktree runtime on macOS. ## What Changed - Guard all three optional source-config array expansions with Bash 3.2-compatible parameter expansion. - Add a regression test that uses the base-config path and verifies that no `--from-config` argument is sent. - Document the Bash 3.2 compatibility requirement in the runtime script. ## Verification - `/bin/bash -n scripts/provision-worktree-runtime.sh` - `node --test --test-name-pattern='runtime provisioning invokes ensure-seeded once|runtime provisioning omits the source override|runtime provisioning guards every optional source-config expansion' scripts/__tests__/provision-worktree-self-heal.test.mjs` - `git diff --check` ## Risks Low risk. The change only affects expansion of an optional two-element CLI argument array. The regression tests cover both the empty and non-empty paths. > For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and discuss it in `#dev` before opening the PR. Feature PRs that overlap with planned core work may need to be redirected — check the roadmap first. See `CONTRIBUTING.md`. ## Model Used OpenAI Codex with model ID `gpt-5`. The runtime did not expose the context-window size. Reasoning, tool use, and code execution were enabled. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>