feat: work-in-progress limits and swimlanes on the board

Each status can carry a WIP limit in the project settings; the board shows
it next to the count, marks a column that goes over it and says so when a
card is dropped there. The board can also be grouped in rows by person,
epic, priority or type, remembered per browser.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/web/tracker/infrastructure/src/lib/adapters/mappers.ts

@@ -77,6 +77,7 @@ export function toSettingsInput(
       color: s.color,
       requiresReason: s.requiresReason,
       archived: s.archived,
+      wipLimit: s.wipLimit ?? null,
     })),
     transitions: settings.transitions.map((t) => ({ from: t.from, to: t.to })),
     issueTypes: settings.issueTypes.map((t) => ({