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DottaandPaperclip
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<!-- entire-trail-link-start --> https://entire.com/gh/paperclipai/-/trails/61/changes/paperclip/61 <!-- entire-trail-link-end --> ## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Task pages load the conversation and related sidebar data separately. > - The sidebar host did not exist until its content arrived. > - Its first appearance skipped the width transition and moved the thread at once. > - This pull request keeps an empty host at zero width until content is available. > - The sidebar and thread now move together, with immediate changes for reduced motion. ## Linked Issues or Issue Description **What happened?** A cold task load showed a wide skeleton. The right sidebar then appeared at full width and shifted the thread at once. **Expected behavior** The sidebar should enter smoothly. The task thread should move with it. Unknown or hidden sidebars should take no space. **Steps to reproduce** 1. Open a populated task in a fresh browser context. 2. Delay the task metadata response. 3. Watch the skeleton and thread as the right sidebar becomes available. Related work: [task cold-open reads](https://github.com/paperclipai/paperclip/pull/17756). ## What Changed - Keep the shared sidebar host mounted at zero width while its content is unknown. Make hidden hosts inert and hide them from assistive technology. - Use shared motion tokens for width and opacity. Disable motion for reduced-motion preferences and keep pointer resizing immediate. - Clamp late content to the current viewport without overwriting the saved width. Keep the motion catalog aligned with the reveal tokens. - Clip the panel body during reveal. Keep the resize handle inside the viewport during the first frame. - Clear empty panes immediately when content is removed. Release maximized geometry on that render. Remove the unused width/opacity token. - Add four replayable Storybook scenarios using the production skeleton and panel components. Add browser checks for both arrival orders, absent and hidden sidebars, reduced motion, resizing, and maximize/restore. - Document the shared sidebar loading behavior in DESIGN.md. - Load the comment-route test modules in suite setup. This prevents a slow module load from timing out the first test and affecting the next test. This test-only change fixes a reproducible CI failure; route behavior and assertions stay the same. ## Verification - 201 focused task-detail, properties-panel, and motion-catalog tests passed. New host-continuity regressions failed against the original component in both task interfaces. - Eight focused Storybook browser checks passed without retries after the review fix. They measure intermediate widths and matching thread widths, check overflow, exercise resize and maximize controls, and confirm immediate removal of docked and maximized content. - The first removal checks sampled before replay cleanup committed. Sampling now starts after the host becomes inert. All three removal checks fail against the prior commit. Restoring the source during that comparison left a stale Storybook module in the preview. After a preview restart, all eight cases passed without retries on the fixed source. - Verified a real populated local task in a fresh browser context with delayed real API responses. Recorded a screencast for visual review. The captured reveal had 20 intermediate widths, no horizontal overflow, and no browser errors. - Repository typecheck, full build, Storybook build, token gates, map checks, and 30 catalog/map tests passed. Full typecheck, full build, focused UI tests, and UI typecheck were repeated after the upstream rebase. - Full `pnpm test:run` was attempted and stopped after repeated embedded PostgreSQL initialization failures. The host has exhausted its semaphore pool. The local app test used a disposable container database instead. - Replay `tasks-sidebar-loading--sidebar-during-skeleton` in Storybook. Run the focused browser suite with `STORYBOOK_TEST_BASE_URL` set to that Storybook server. - CI serialized shard 6/9 failed when the first comment-route test hit its 15-second timeout. Its work then affected the next test's mock count. Both failures reproduced locally on Node 24. After moving module loading to suite setup, all 103 tests and server typecheck passed with the same test timeout. A first local attempt could not bind the Supertest listener inside the sandbox; it was repeated with local network access. ## Risks - The shared host also serves other properties panels. Hidden preferences, default widths, pointer resizing, maximize/restore, and both task interfaces have focused coverage. - Width animation can reflow text while the panel enters. Reduced motion removes the transition. Navigation removes empty panes immediately. - Visual approval is complete. The full CI suite must pass before merge. No schema or API contracts change. ## Model Used - OpenAI GPT-6 through Codex, with reasoning, code execution, and browser tools. The exact deployed model ID and context-window size are not exposed in this session. ## 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>