v1.6.7: add settings.system permission, move numbering/VAT to company tab, rename security tab to roles

- New settings.system permission with migration (idempotent INSERT)
- requireAnyPermission helper for route guards accepting multiple perms
- Move document numbering + currency/VAT cards from system tab to CompanySettings
- Rename security tab to roles, add canManageSystem alongside canManageCompany
- TOTP required endpoint and system-info now use settings.system
- Roles list now includes user_count
- Sidebar Settings link includes settings.system

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/middleware/auth.ts

@@ -54,3 +54,25 @@ export function requirePermission(...permissionNames: string[]) {
     }
   };
 }
+
+export function requireAnyPermission(...permissionNames: string[]) {
+  return async (
+    request: FastifyRequest,
+    reply: FastifyReply,
+  ): Promise<void> => {
+    await requireAuth(request, reply);
+    if (reply.sent) return;
+
+    const authData = request.authData!;
+
+    // Admin has all permissions
+    if (authData.roleName === "admin") return;
+
+    const hasAny = permissionNames.some((p) =>
+      authData.permissions.includes(p),
+    );
+    if (!hasAny) {
+      return error(reply, "Nedostatečná oprávnění", 403);
+    }
+  };
+}