Open stop details in a modal from the Stops admin table

Clicking a stop (or the Edit link) in /admin/stops now opens a modal
with Details/Products/Message tabs instead of navigating to
/admin/stops/[id].

- Add getStopDetails server action (returns stop, brand, candidate
  products, assigned products, brand list in one round trip).
- Add StopDetailModal component with tabbed panels that reuse the
  existing StopEditForm, StopProductAssignment, and
  MessageCustomersSection.
- Add an optional onSaved callback to StopEditForm so the modal can
  refetch + router.refresh() after a save.
- StopTableClient now opens the modal on row click; the /admin/stops/[id]
  route is kept in place for direct links/bookmarks.

src/actions/stops/get-stop-details.ts

@@ -0,0 +1,119 @@
+"use server";
+
+import { getAdminUser } from "@/lib/admin-permissions";
+import { createClient } from "@supabase/supabase-js";
+
+export type StopDetail = {
+  id: string;
+  city: string;
+  state: string;
+  date: string;
+  time: string;
+  location: string;
+  slug: string;
+  active: boolean;
+  brand_id: string;
+  address: string | null;
+  zip: string | null;
+  cutoff_time: string | null;
+  brands: { name: string; slug: string } | { name: string; slug: string }[] | null;
+};
+
+export type AssignedProduct = {
+  id: string;
+  product_id: string;
+  products: { name: string; type: string; price: number } | null;
+};
+
+export type StopDetailsResult =
+  | {
+      success: true;
+      stop: StopDetail;
+      allProducts: { id: string; name: string; type: string; price: number }[];
+      assignedProducts: AssignedProduct[];
+      brands: { id: string; name: string; slug: string }[];
+    }
+  | { success: false; error: string };
+
+/**
+ * Fetch a single stop with its brand, all candidate products, currently
+ * assigned products, and the list of brands (for the brand switcher in the
+ * edit form). Mirrors the data the old `/admin/stops/[id]` page server
+ * component loaded, so the modal can be a drop-in replacement.
+ */
+export async function getStopDetails(stopId: string): Promise<StopDetailsResult> {
+  const adminUser = await getAdminUser();
+  if (!adminUser) return { success: false, error: "Not authenticated" };
+  if (!adminUser.can_manage_stops) {
+    return { success: false, error: "Not authorized" };
+  }
+
+  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL!;
+  const supabaseKey = process.env.SUPABASE_SERVICE_ROLE_KEY!;
+  const useMockData = process.env.NEXT_PUBLIC_USE_MOCK_DATA === "true";
+
+  // Use a fresh server-side client (cookie-less) so RLS doesn't block reads
+  // for platform_admin dev sessions. The auth check above has already gated
+  // access.
+  const server = useMockData
+    ? null
+    : createClient(supabaseUrl, supabaseKey, {
+        auth: { persistSession: false, autoRefreshToken: false },
+      });
+
+  // 1. Stop + brand
+  let stop: StopDetail | null = null;
+  let stopErr: string | null = null;
+
+  if (server) {
+    const { data, error } = await server
+      .from("stops")
+      .select("*, brands(name, slug)")
+      .eq("id", stopId)
+      .single();
+    if (error) stopErr = error.message;
+    else stop = (data ?? null) as StopDetail | null;
+  } else {
+    // Mock fallback — empty
+    stopErr = "Stop not found";
+  }
+
+  if (!stop) {
+    return { success: false, error: stopErr ?? "Stop not found" };
+  }
+
+  // Brand-scope check for brand_admin
+  if (adminUser.brand_id && stop.brand_id !== adminUser.brand_id) {
+    return { success: false, error: "Not authorized for this brand" };
+  }
+
+  // 2. Candidate products for this brand
+  const { data: allProducts } = server
+    ? await server
+        .from("products")
+        .select("id, name, type, price")
+        .eq("brand_id", stop.brand_id)
+        .eq("active", true)
+    : { data: [] as { id: string; name: string; type: string; price: number }[] };
+
+  // 3. Assigned products (joined with product info)
+  const { data: productStops } = server
+    ? await server
+        .from("product_stops")
+        .select("id, product_id, products(id, name, type, price)")
+        .eq("stop_id", stopId)
+    : { data: [] as AssignedProduct[] };
+
+  // 4. Brands for the brand switcher
+  const { data: brands } = server
+    ? await server.from("brands").select("id, name, slug")
+    : { data: [] as { id: string; name: string; slug: string }[] };
+
+  return {
+    success: true,
+    stop,
+    allProducts: allProducts ?? [],
+    assignedProducts: (productStops ?? []) as AssignedProduct[],
+    brands: brands ?? [],
+  };
+}