feat: tabbed setup, user metadata, light theme, scoped shift history

Consolidate the config screens under a single /setup hub with permission-
gated tabs (Devices/Tariff/Subscriptions/Site/Users/Roles/Shifts), collapsing
the top nav to Booth·Shift·Setup; old top-level paths redirect.

Users: add optional profile metadata (full name, phone, email, address) on
create/edit. Theme: a light palette saved to the user's profile (users.theme),
toggled in the header beside the language switch and applied on load like the
language preference. Both ride on a single additive migration (0008).

Shift history: a new GET /api/shifts folds the signed shift_z_report chain into
completed shifts, SCOPED server-side — operators see only their own; holders of
shift:cash see all with an operator + date-range filter. Surfaced as the Shifts
tab; an operator cannot read another operator's takings (param spoofing is
ignored).

These three features share the router, api client and i18n catalogs, so they
land together. Verified live: theme persists across reload, metadata round-
trips to the DB, and shift scoping holds (operator self-only, admin all+filter).

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

packages/db/src/schema.ts

@@ -62,6 +62,19 @@ export const users = sqliteTable("users", {
   language: text("language", { enum: ["sq", "en"] })
     .notNull()
     .default("sq"),
+  // Preferred UI theme for this user. Persisted like `language` (read on login,
+  // restored from any booth, changed without a token refresh). Dark is the default
+  // (the booth runs in a dark room). Printed tickets are unaffected. See i18n.md.
+  theme: text("theme", { enum: ["dark", "light"] })
+    .notNull()
+    .default("dark"),
+  // Optional operator profile metadata — display name + contact details. All
+  // nullable; only username/password/role are required to create a user. fullName
+  // (when set) is the human label for audit/Z-report display.
+  fullName: text("full_name"),
+  phone: text("phone"),
+  email: text("email"),
+  address: text("address"),
   createdAt: text("created_at")
     .notNull()
     .default(sql`(current_timestamp)`),