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Jaayden Halko
a24ebb9d38
Fixes layout issues on the agents empty state page. 1. At 200% zoom on a 1440 px desktop, the CSS viewport shrinks to 720 px, which was below the previous `md:` breakpoint (768 px) and collapsed the page into the mobile stack. Switching the page shell and shell-level controls to the `sm:` breakpoint (640 px) keeps the sidebar and chat area side-by-side at common zoom levels while preserving the mobile stack for real phone viewports. 2. The empty state stays bottom-aligned on mobile and centered on the desktop branch, with tighter spacing so the chat input sits closer to the bottom of the screen at 200% zoom. 3. The inner stack gap shrinks from `gap-4` (16 px) to `gap-2` (8 px) and the footer paragraph drops its `mt-1`, tightening the space around the organization selector, the chat input, and the "Introductory access to Coder Agents through September 2026" line. 4. Sidebar header/footer controls, the page header, the chat top bar, and the plan-mode badge now use the same `sm:` desktop breakpoint as the page shell. A collapsed sidebar can be expanded again at 640 to 767 px. Dropdown full-width CSS (`@media (max-width: 767px)`) and the `isBelowMdViewport` helper are intentionally left at 768 px. Those govern dropdown UX rather than page layout, and the chat pane is still narrow at 640 to 767 px after the sidebar is visible. The page is in desktop mode in that range while dropdowns stay full-width. <img width="1460" height="858" alt="Screenshot 2026-04-30 at 23 03 48" src="https://github.com/user-attachments/assets/62072432-6edf-4bf5-9a7f-88fd69f89602" /> <img width="1460" height="856" alt="Screenshot 2026-04-30 at 23 03 57" src="https://github.com/user-attachments/assets/76d94673-ac45-4a50-9c6b-3cfeffa1d6c7" /> Regression coverage in Storybook: - `AgentsPageView.stories.tsx > EmptyStateZoom200Desktop` pins a new 720 px Chromatic viewport and asserts the rendered layout is horizontal, the sidebar is left of the main panel, and the sidebar header/footer controls are visible. - `AgentsPageView.stories.tsx > CollapsedSidebarZoom200Desktop` pins the same 720 px viewport and asserts the expand-sidebar control is visible when the sidebar is collapsed. - `AgentCreateForm.stories.tsx > OrgPickerTightSpacing` measures the vertical gap between the org selector row and the chat-input composer and expects it to stay below 16 px. --- Generated by Coder Agents.