fix(ui): keep main panel reachable on small screens#9144
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The left and right side-panel splitters could be dragged inward until the middle viewer panel was crowded down to ~0px, leaving no surface to grab the splitters and pull the panels back. On a tablet this was easy to fall into and hard to recover from. Add a MAIN_PANEL_MIN_SIZE_PX = 128 minimum to the main panel in the canvas, generate, workflows, and upscaling layouts -- wide enough to fit both floating toggle button groups (~48px each + breathing room). Apply it both at fresh-init time and after registerContainer restores from persisted JSON via enforceMainPanelMinWidth, so existing users with saved layouts that pre-date the constraint also get it (and the panel grows up to the minimum if its restored size violates it). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
lstein
requested review from
Pfannkuchensack,
blessedcoolant and
dunkeroni
as code owners
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Summary
MAIN_PANEL_MIN_SIZE_PX = 128minimum to the main panel in the canvas, generate, workflows, and upscaling layouts — wide enough for both floating toggle button groups with breathing room.addPanel({ minimumWidth })) and afterregisterContainerrestores from persisted JSON (via a newenforceMainPanelMinWidthhelper), so users with saved layouts that pre-date this constraint pick it up on next load. If the restored width is below the minimum, the helper also resizes the main panel up.Test plan
pnpm lint(eslint + prettier + tsc) — cleanpnpm test:no-watch— 1097/1097 pass, including the 85 navigation-api tests🤖 Generated with Claude Code