@oksure/dsh-client-ui-mobile-comfort

Touch-device comfort fixes for the DeepSeek Harness web client, packaged as an out-of-tree dsh bundle plugin.

What it fixes

On phone and tablet browsers the dsh web UI shows four touch-specific problems:

1. Ghost tooltips. Tapping a sidebar control synthesizes mouseenter/focus, which mounts a tooltip; when the tapped control then moves (sidebar collapse animation), no trailing mouseleave ever fires on touch browsers, so the bubble lingers indefinitely. Reproduced on WebKit: the tooltip stays visible 3+ seconds after every tap with no pointer anywhere near. This sheet hides [role="tooltip"] under (hover: none) and (pointer: coarse) — tooltips are a hover affordance, and coarse pointers get none.
2. Double-tap-zoom ambiguity. The app ships no touch-action rules, so on iOS Safari rapid second taps zoom the page instead of clicking (and first clicks carry the legacy delay). The sheet sets touch-action: manipulation on interactive elements, leaving pinch zoom untouched.
3. Small touch targets. The collapsed rail controls and composer controls are smaller than a comfortable touch target. The sheet expands them to 44px, and expands the open drawer actions to 40px.
4. Narrow-screen layout collapse. The stock layout keeps the 280px sidebar as a grid column on narrow screens, leaving too little width for the composer. The sheet turns the sidebar into a mobile drawer with an overlay, keeps the composer controls on one row, closes the drawer after a session row is selected or when the user taps outside it, and preserves row-action menus.
5. Touch hover interception. The session hover card can treat a touch as hover before the row click is handled. The sheet suppresses that touch-only hover path and leaves the native row click as the activation path.
6. Collapsed session groups. The stock workspace browser initially shows only five sessions per workspace. The sheet expands those groups on sidebar entry, while preserving an explicit user request to show fewer until the sidebar is reopened.

Desktop pointers are unaffected: both rules key off input modality (touch-action) or pointer class (hover/pointer media features).

Install

dsh plugin --profile web add file:/path/to/dsh-mobile-comfort

Then restart the profile (dsh web). Verify by loading the UI on a phone: tapping the sidebar toggle must not leave a tooltip behind.

Files

• lib/client.js — browser half: injects the responsive stylesheet and the mobile drawer outside-tap handler for the lifetime of the plugin fiber (ctx.effect, HMR-safe disposer).
• lib/index.js — host half: no-op (browser-only plugin).
• cordis.patch.yml — bundle patch inserting the ui-mobile-comfort row.

Notes for upstream

The root causes live in @deepseek-ai/dsh-client-ui-primitives (Tooltip.tsx: onFocus shows immediately and only disabled handles the no-mouseleave case) and in the absence of any touch-action policy. A full diagnosis with engine-level event traces is in docs/mobile-touch-report.md; it is written up to be posted to the upstream Discussions as well.

License

MIT