feat(web): console-style redesign on shadcn-svelte components#136

perf(web): remove the unused app tooltip provider

fix(web): preserve keyboard focus in console controls

fix(web): reject reversed traffic windows and hide stale totals

perf(web): load the sources and dataset command lists on first open

fix(web): lazy-load calendar and command palette, keep card menu focus across activation

test(web): cover console toolbar, KPI totals, card menu and shell navigation

feat(web): console styling for datasets, files, file detail and alerts pages; remove rail controls

feat(web): console shell, filter toolbar, KPI row and card menus on shadcn-svelte

chore(web): add shadcn-svelte popover, command, range calendar, menu, toggle group, sheet and form primitives