dsh-mobile-sidebar

Give the whole left column back to the conversation on phones.

What it changes

Below 1024px — the same breakpoint at which @deepseek-ai/dsh-client-ui-layout auto-collapses the sidebar — the stock web shell still keeps a 56px icon rail (computeColumns() resolves the collapsed track to collapsedWidth, which is 56 on the web; only macOS desktop and the Windows titlebar shell pass 0). On a 390px viewport that rail eats 14% of the screen for a column you cannot read anything in.

This plugin, under the same breakpoint:

	stock	with the plugin
frame tracks at 390px	56px 334px 0px	0px 390px 0px
collapsed sidebar	56px icon rail	nothing — no track, no paint
opening the sidebar	squeezes the centre to 110px	300px drawer over a 390px centre, tap outside to close
header	no toggle	panel-left button at the header's leading edge
≥ 1024px	—	untouched (280px 1000px 0px, button hidden)

Install

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

dsh plugin add appends the package to dsh.profile.bundles and hot-mounts it; the browser only needs a refresh to load the new client combo. No dsh web restart is required.

To remove it, delete the "dsh-mobile-sidebar" entry from bundles in ~/.dsh/profiles/<profile>/package.json, or disable the bundle from the Plugins page.

How it works

Everything is browser-side; the Host half is intentionally empty.

1. Zero the sidebar track. React writes grid-template-columns as an inline style, and a media query cannot override one track of it. A MutationObserver on the frame watches every solve, rewrites the value with only the first track replaced, and republishes it through the --dsh-mobile-frame-cols custom property. The centre and right tracks still matter between 800px and 1024px, where the right panel solves a real third track, so they are carried through untouched.
2. Hide the rail without leaving the grid. visibility: hidden, not display: none. A display:none box is not a grid item, so auto-placement slides the centre column into the now-0px first track and the conversation renders at zero width.
3. Open as a drawer. The column stays a grid item in its 0px track and simply overflows it (position: relative + an explicit width), so the centre column never changes width. A scrim in the shell.overlay slot closes it on tap.
4. The toggle. On the Conversation it is a primitives Button + IconPanelLeftOutlineRegular in the conversation.header.leading slot, calling ctx.layout.toggleSidebar().

Global panels (Plugins, Automation tasks, …)

The Conversation is the only panel that declares a header slot. Every other global panel registers into the keyed main slot and builds its own heading — Plugins renders <header class="…pageHead">, Schedules renders <div class="…pageHeading">, and neither exposes anything to inject into.

So the toggle falls back to a fixed control rendered in shell.overlay, which the shell always mounts at root scope. That covers every panel at once, including panels that do not exist yet. Two rules keep it honest:

• It steps aside on the Conversation. [frame]:not(:has([data-dsh-mobile-sidebar-button])) is what hides it there, so the in-header button and the floating one never appear together.
• It reserves its own lane. Panel headings all start 28px down and 24px in, so the control would sit on the title's shoulder; a rule adds 40px of padding-inline-start to those headings while the control is present.

where	control
Conversation	conversation.header.leading slot
Plugins / Schedules / any future panel	fixed control in shell.overlay
≥ 1024px	neither

Screenshots

Closed on a phone — the rail is gone and the conversation keeps the full width:

Tapping the header toggle opens the drawer over that same full-width conversation:

On a global panel the toggle falls back to a fixed control:

Above the breakpoint nothing changes:

Upgrades

The plugin targets source-written attributes, not the shell's CSS-module class names (which are build-hashed and change between DSH releases):

• [data-shell-overlay] — the frame is its parent element
• [data-slot="sidebar"] — the sidebar column is its parent element
• [data-sidebar-collapsed] on the frame — closed vs. open
• [data-plugin-panel] — the one global panel that marks its section; the rest are matched on the _pageHead / _pageHeading class fragment

License

MIT