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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Task comments can contain references to files in project and execution workspaces. > - Paperclip detected path-shaped inline code and showed it as an actionable file chip. > - The UI did not first confirm that the current board session could open the file. > - Missing, denied, ambiguous, remote, and unsupported files therefore looked actionable and failed after a click. > - This pull request adds an issue-scoped availability check and promotes only confirmed files to chips. > - The benefit is that the task thread shows a file action only when that action can succeed. ## Linked Issues or Issue Description **What happened?** Task comments promoted path-shaped inline code to file chips before Paperclip checked the file. A chip could point to a missing, denied, ambiguous, remote, or non-previewable file. The action then failed after the user selected it. **Expected behavior** Paperclip must show a file chip only after the server confirms that the current board session can open the exact file reference. All other path-shaped text must stay ordinary inline code. **Steps to reproduce** 1. Add a task comment that contains inline code with a missing or inaccessible workspace path. 2. Open the task thread as a board user. 3. Observe that the path looks like an actionable file chip. 4. Select the chip and observe that the file cannot open. **Paperclip version or commit** `19be4cf927` and earlier. **Deployment mode** Local dev and self-hosted server. **Access context** Board user. ## What Changed - Added shared request, response, and validation contracts for batched workspace-file availability checks. - Added an issue-scoped server endpoint that resolves file references with company, issue, workspace, and preview-access checks. - Added bounded batch concurrency and tests for missing, denied, ambiguous, remote, unsupported, and available files. - Added an issue-scoped UI availability registry that deduplicates, batches, caches, and invalidates file checks. - Changed task-comment markdown rendering so only confirmed files get chip styling and file-viewer behavior. - Bound each chip to the exact workspace target that passed the availability check. ## Verification - `pnpm exec vitest run packages/shared/src/workspace-file-resource.test.ts server/src/__tests__/file-resources.test.ts ui/src/components/MarkdownBody.test.tsx ui/src/components/WorkspaceFileMarkdownBody.availability.test.tsx ui/src/lib/remark-workspace-file-refs.test.ts ui/src/lib/workspace-file-availability.test.ts` — 93 passed, 35 skipped. - `pnpm check:token-gates` — clean. - `pnpm -r typecheck` — passed. - `pnpm build` — passed. - `pnpm test:run` — all server and UI groups passed. One unchanged CLI test saw the run-injected static AWS credentials and expected only its local `AWS_PROFILE`. The same test passed, 8 of 8, after removing only `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY` from its process environment. ## Risks - File chips now appear after an asynchronous availability check, so path-shaped text can briefly render as inline code. - Availability results use the existing 30-second file-resource cache window. File-resource invalidation forces a new check. - The endpoint limits each request to 100 references and the client chunks larger sets. > 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 GPT-5. The service did not expose a more specific model ID or context-window size. The agent used high-reasoning mode, repository tools, command execution, and test execution. ## 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 - [ ] 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>