feat(projects): status filter tabs + per-status row tints on the list

Mirrors the offers page: centered status tabs (Vsechny/Aktivni/
Dokonceny/Zruseny) filtering server-side (?status= already supported),
filtered-vs-empty empty states, and row tints - dokonceny rows get the
info-channel low-alpha wash matching the badge, zruseny rows are faded
like invalidated offers.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/admin/lib/queries/projects.ts

@@ -40,6 +40,7 @@ export const projectListOptions = (filters: {
   order?: string;
   page?: number;
   perPage?: number;
+  status?: string;
 }) =>
   queryOptions({
     queryKey: ["projects", "list", filters],
@@ -50,6 +51,7 @@ export const projectListOptions = (filters: {
       if (filters.order) params.set("order", filters.order);
       if (filters.page) params.set("page", String(filters.page));
       if (filters.perPage) params.set("per_page", String(filters.perPage));
+      if (filters.status) params.set("status", filters.status);
       const qs = params.toString();
       return paginatedJsonQuery<Project>(
         `/api/admin/projects${qs ? `?${qs}` : ""}`,