## Thinking Path > - Paperclip helps people manage agent work and retain its context. > - Task documents and attachments keep that context with the task. > - The Artifacts panel showed output but could not accept a new file. > - Uploading through a message can require resuming a paused task. > - Existing document and attachment APIs can save files directly. > - This PR adds direct uploads and a drop target to the task panel. > - People can add context while keeping work paused and unassigned. ## Linked Issues or Issue Description **What existing behavior does this improve?** The task Artifacts panel and its existing document and attachment APIs. **Subsystem affected** ui/ — React board UI. No server, schema, or API changes. **Current behavior** The Artifacts panel cannot upload a file. It also excludes files uploaded by people. The message composer can require a task to resume before it submits attachments. **Proposed behavior** Use the upload icon or drop files anywhere in the open Artifacts panel. The target includes the header, padding, and existing cards. Files save directly to the task without a message or a pause change. **Reason and benefit** People can prepare a handoff on a paused, unassigned task without starting agent work. Markdown becomes a task document. Other supported files use attachment storage. **Breaking changes** Files from people now appear in Artifacts alongside agent output. Promoted attachments still appear once. A repeated Markdown filename creates a separate document instead of replacing an existing revision. Existing APIs and limits stay the same. **Additional context** Related upload API work: Refs #7472 and Refs #7248. This PR adds the missing task-panel entry point. ROADMAP.md lists Artifacts and Work Products as available; this is a scoped UI improvement. ## What Changed - Add an upload icon with no visible label or background. - Accept file drops across the full task panel, including the desktop portal header and mobile tabs. - Show per-file progress and inline Retry and Dismiss actions. - Import Markdown under a new document key and retain existing revisions. - Include files from people in Artifacts and dedupe promoted attachments. - Add component and task-journey stories for empty, populated, loading, error, mobile, and drag-over states. - Add real browser tests for persistence, pause preservation, duplicate document names, full-panel drops, and partial failure recovery. ## Verification - Five Playwright tests passed against an isolated instance started by the source `test-drive` command. The document API, attachment storage, pause holds, downloads, and task UI were real. Only the explicit upload failure was injected. - The browser tests verified desktop and mobile uploads, document reading, persistence after reload, no task comments or runs, header drops, preservation of original and hidden internal documents, reserved filename handling, and upload retry. - 163 focused UI tests passed. - `pnpm -r typecheck` passed. - `pnpm build` passed. - `pnpm check:token-gates` passed. - The full Vitest suite is running after repair of an exhausted local PostgreSQL shared-memory pool. The initial run failed to initialize PostgreSQL. Six unattached segments had no living creator or last-user process; removing them restored free slots. - CI and the current-head Greptile review are pending. ## Risks - Artifacts now includes user files, so existing tasks can show more cards. - Uploads retain the server's authorization, file-type, size, and revision checks. No migration is needed. - Binary attachment uploads use the existing API. A transport failure with an unknown save outcome can retain the existing API's retry ambiguity. ## Model Used OpenAI GPT-6 through Codex. The exact runtime snapshot ID and context-window size were not exposed to this session. The model used repository inspection, code editing, shell tools, and browser automation. ## 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 - [ ] 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>
@paperclipai/ui
Published static assets for the Paperclip board UI.
What gets published
The npm package contains the production build under dist/. It does not ship the UI source tree or workspace-only dependencies.
Storybook
Storybook config, stories, and fixtures live under ui/storybook/.
pnpm --filter @paperclipai/ui storybook
pnpm --filter @paperclipai/ui build-storybook
Typical use
Install the package, then serve or copy the built files from node_modules/@paperclipai/ui/dist.
Editor dependency identity
Keep the root and workspace overrides for @codemirror/state,
@codemirror/view, and @lezer/common aligned. CodeMirror requires shared
extension identity, while Lezer parsers and syntax highlighters require shared
NodeProp IDs. Multiple Lezer copies can crash code-block highlighting with
tags is not iterable. src/lib/codemirror-single-instance.test.ts checks the
installed dependency graph and highlights sample code through the editor's real
language dependencies. GitHub Actions owns regeneration of pnpm-lock.yaml.