Move the console onto ReUI PRO

Install ReUI (MCP, skill, @reui registry, Tailwind v4, shadcn base-nova) and move
the shared UI onto it: Button, Tag, Check, Input/Textarea, Segmented, Alert, Panel,
Dialog, Tooltip, Menu and Select (Popover), Toast (sonner), the Table frame
(DataGrid), the Dashboard KPI strip, the shnt Ops palette, Geist and the type scale.

Design only: behaviour, texts and roles are unchanged. Tests that asserted the old
DOM were updated; the tests now format numbers in English wherever they run.
docs/reui-migration-plan.md records the plan and its decisions.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

AGENTS.md

@@ -0,0 +1,14 @@
+<!-- BEGIN:reui-agent-rules -->
+## ReUI design rules (every UI edit, follow-ups included)
+
+This project uses an existing design system: ReUI on shadcn/ui. Keep its look. Generic frontend advice (vary fonts or themes, gradients, page-load or staggered reveals, "2-3 intentional motions", Framer Motion) does not apply here, and other design skills lose where they disagree.
+
+1. Use installed components first (`components/ui`, `components/reui`): tables `data-grid`, filtering `filters`, boards `kanban`, modals `Dialog` or `AlertDialog`, toasts `sonner`. Never set height, radius, padding, shadow or motion on them; use `size`, `variant`, `spacing`.
+2. Color: semantic tokens. State: `<Badge variant="success-light">` from `@/components/reui/badge` at default size, or Alert variants. Raw palette only for categorical identity, with its `dark:` pair.
+3. Spacing: `gap-*` on the parent: `gap-1` to `gap-2` in a row, `gap-3` to `gap-4` between groups, `gap-6` to `gap-8` between sections. Type: `text-sm` body, `text-xs` meta, nothing smaller; never resize FrameTitle or CardTitle.
+4. Motion: installed parts already animate; never retime them. Yours: hover `transition-colors`; reveal `duration-200 ease-[cubic-bezier(0.22,1,0.36,1)]`; transform and opacity only; never `transition-all`, bounce, or a stagger on table rows or lists of 20+; at most 1 entrance per view; `MotionConfig reducedMotion="user"` plus `motion-reduce:`.
+5. Every data region: empty state with an action, `Skeleton` loading, inline error with Retry.
+6. Before UI code, write the plan from `.agents/skills/reui/SKILL.md` in your reply. Before you finish, run its self-check on the files you changed and fix every hit (2 rounds at most). Full rules: `.agents/skills/reui/SKILL.md`. If that folder is missing, call the `reui` MCP tool `get_agent_skill`.
+
+Managed by the ReUI installer. Edits between the markers are replaced on the next run.
+<!-- END:reui-agent-rules -->