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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - The board UI is where operators inspect company activity, agent work, and issue progress. > - Existing board views show individual issue and run details, but they do not give operators a compact time-based picture of work across agents. > - A work timeline helps operators scan when agents worked, how handoffs happened, and where overlapping work occurred. > - This pull request adds a company-scoped Work Timeline page backed by the existing API surface and renders the timeline as a custom SVG Gantt-style view. > - The benefit is faster operator understanding of multi-agent execution without opening each issue thread individually. ## Linked Issues or Issue Description No public GitHub issue exists for this change. Subsystem affected: - ui/ — React + Vite board UI Problem or motivation: - Operators can inspect individual issues and runs, but there is no compact time-based view of company work across agents. - This makes it harder to scan overlaps, handoffs, retries, and activity windows without opening many issue threads. Proposed solution: - Add a company-scoped Work Timeline page in the board UI. - Render agent and system run spans as a custom SVG Gantt-style chart with packed overlap lanes. - Show issue color identity, kickoff attribution, hover-revealed delegation connectors, retry styling, zoom controls, a sticky actor gutter, and a minimap brush. - Keep human activity lightweight by showing human kickoff chips without plotting standalone human event rows. Alternatives considered: - Add the same information to existing issue-list or run-list views. That would preserve simpler UI, but it would not show temporal overlap or handoff paths clearly. - Build this as a plugin-only surface. That keeps core smaller, but the board already has the company-scoped route, navigation, and API client patterns needed for this operator workflow. Roadmap alignment: - `ROADMAP.md` does not list an existing duplicate work-timeline milestone. This supports the broader operator visibility direction around artifacts, enforced outcomes, and higher-autonomy execution. Additional context: - Storybook includes `Pages/Work Timeline` stories for hour/day zoom and a human-activity sample so reviewers can inspect the component without a live backend. ## What Changed - Added the Work Timeline page, route, sidebar entry, API client, query key, and company-prefixed route helper coverage. - Added a pure timeline layout transform for row packing, issue colors, kickoff attribution, connector calculation, tick selection, and duration formatting. - Added the custom SVG timeline chart with sticky actor gutter, hover-revealed connectors, zoom controls, minimap brushing, visible-range feedback, and issue navigation. - Added Storybook coverage plus sample fixtures for the work timeline. - Added and corrected focused UI tests covering layout, chart behavior, routing, sidebar behavior, and collapsed-sidebar expectations. - Addressed Greptile feedback for kickoff fallback ordering, minimap range math, document drag listener cleanup, and stable default `now` handling. ## Verification - `pnpm --filter @paperclipai/ui exec vitest run src/lib/timeline/layout.test.ts src/components/timeline/WorkTimelineChart.test.tsx src/pages/Timeline.test.tsx src/lib/company-routes.test.ts src/components/Sidebar.test.tsx src/components/RequestCollapsedSidebar.test.tsx` - `pnpm --filter @paperclipai/ui typecheck` - `git merge-tree $(git merge-base HEAD origin/master) HEAD origin/master | rg -n "<<<<<<<|changed in both|CONFLICT"` returned no conflicts. - Attempted Storybook screenshot capture with Playwright; Storybook ran locally, but Chromium could not launch in this container because native browser libraries such as `libatk-1.0.so.0` are unavailable and `npx playwright install-deps chromium` requires interactive sudo. ## Risks - Medium UI risk: this adds a substantial visual surface with custom SVG interaction logic, so browser-level review is still useful for responsive behavior and usability. - Low backend risk: this PR only adds a UI client/page around the existing timeline API contract and does not change database schema or server routes. > 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 GPT-5 via Codex coding agent, with repository file access, shell command execution, GitHub connector access, and focused test execution. Exact context-window details are not exposed in this runtime. ## 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>