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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Agent runs use workspace transport to restore and collect files. > - Some directories belong to the agent across tasks. > - Those directories need plain file transport without task Git state. > - A concurrent file edit must be detected before a merge changes any file. > - This pull request adds optional plain-directory sync and conflict preflight. > - Existing task workspace sync keeps its defaults. ## Linked Issues or Issue Description Refs #14325. This is the transport prerequisite for a replacement of its instruction revision design with current agent files. ## What Changed - Add an opt-in plain-directory transport mode to command and sandbox runtimes. - Add strict merge preflight for file edits, deletions, and directory changes. - Accept identical replay after an interrupted merge. Preserve competing changes. - Set the compiled OpenCode test executable to 0755, independent of the CI host’s file-creation mask. Preserve the original startup error if cleanup also fails. ## Verification - At `ced53ae532ce6966cad5a83575d83db61af98126`, all 212 targeted transport tests passed across workspace restore, remote managed runtime, SSH fixture, and execution-target sandbox suites. Adapter-utils typecheck passed. - Real isolated SSH retry fixture previously passed with `PAPERCLIP_ENABLE_DARWIN_SSH_ENV_LAB=1`; stale deleted files remain absent while gitignored binary bytes survive. - Dependent PR #14420 passed real native local, legacy local, and native Daytona persistence E2E at `169fab46d5af21caa2269b4c1b29b69c933a6951`, which includes all production transport changes through `ced53ae53`; the subsequent two commits only fix the OpenCode test fixture. Nine tasks, three server restarts, and all cleanup checks passed. - A hosted OpenCode fixture failed twice at `ced53ae53`. Reproduced the failure locally and in Linux with `umask 0002`: the compiler created a group-writable executable, correctly rejected by the qualified launch boundary. Explicit 0755 permissions fix the test without weakening the production guard. The focused test and non-root Linux reproduction now pass under that same mask. - Before rebase, head `69e97de0475d34aac5d532e559a405eaf015fd2b` includes the deterministic fixture permission fix and preserves original bootstrap diagnostics. All production transport code is unchanged since the 212-test validation. Fresh Greptile review is 5/5 on this exact head with no unresolved findings. All 54 current-head checks passed, with two conditional skips. The full CI run completed successfully, including the previously failing OpenCode runner shard. - Merge validation on rebased head `c509d79dd190c5cb00dc65edfde209097ff21465`: all five commits are patch-identical to the reviewed branch. All 54 checks passed with two conditional skips, and fresh Greptile review is 5/5 with no findings. One retry cleared an npm archive 404 and a Cursor fixture timeout. ## Risks - New behavior is opt-in. Existing task snapshot behavior retains its defaults. - Generic strict merge preflight remains opt-in. The dependent agent-folder feature rebases changed paths before applying them to provide per-file last-sync-wins; it does not create a conflict-review queue. - This change adds no database migration, dependency, or UI. ## Model Used OpenAI Codex, GPT-6 family. The session does not expose a more specific model ID or context-window size. Reasoning, code execution, and tool use assisted this change. Live provider validation used `gpt-5.6-sol`. ## 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>