admin: dashboard instead of the invoice list

/admin redirected to the invoice list, which stopped making sense once
the admin also ran the bingo. Make it a dashboard with one tile per
area: invoice totals, outstanding amount per currency, overdue count and
the five latest invoices; the bingo score, reserve size, latest incident
and card cells still missing a photo. A shared nav links the sections.
Tiles are per area so they can follow user permissions later.

Assisted-by: Claude:opus-5

CLAUDE.md

@@ -78,7 +78,7 @@ If a form is ever reinstated, note that Traefik's access log (`/opt/traefik/logs
 
 Admin (HTTP Basic via `ADMIN_USER`/`ADMIN_PASSWORD`):
 
-- `GET  /admin` → redirects to `/admin/invoices`.
+- `GET  /admin` → dashboard (`views/admin/dashboard.erb`): invoice counts/outstanding/overdue + recent five, bingo score/reserve/latest incident/missing photos. Shared admin nav in `views/admin/_nav.erb`.
 - `GET  /admin/invoices` — list, newest first.
 - `GET  /admin/invoices/new` — create form. Dynamic line items via `public/admin-invoice-form.js`.
 - `POST /admin/invoices` — validate → allocate number → render PDF → upload to MinIO → persist row.

asxpio.rb

@@ -130,8 +130,28 @@ class AsxpioWeb < Sinatra::Base
     halt 503, 'Invoicing not configured (DATABASE_URL missing).' unless defined?(Invoice)
   end
 
+  # Overview of every admin area; each tile links into its section.
   get '/admin' do
-    redirect '/admin/invoices'
+    @page_title = 'Dashboard · admin'
+    @noindex    = true
+    unpaid = Invoice.where(paid_at: nil).all
+    @inv = {
+      count:         Invoice.count,
+      unpaid:        unpaid,
+      overdue:       unpaid.count { |i| i.due_on < Date.today },
+      unpaid_totals: unpaid.group_by(&:currency).transform_values { |l| l.sum(&:total) },
+      recent:        Invoice.order(Sequel.desc(:created_at)).limit(5).all
+    }
+    board = Bingo::Board.load
+    @bingo = {
+      cells:         board.cells.size,
+      hit:           board.hit.count(true),
+      lines:         board.wins.size,
+      reserve:       [Bingo::Datacenter.count - board.cells.size, 0].max,
+      last_incident: board.incidents.first,
+      no_photo:      board.cells.reject(&:photo_key)
+    }
+    erb :'admin/dashboard'
   end
 
   get '/admin/invoices' do

public/style.css

@@ -346,6 +346,36 @@ a:hover {
     font-size: 0.9rem;
 }
 
+/* Admin nav + dashboard */
+.admin-nav {
+    display: flex;
+    gap: 16px;
+    justify-content: center;
+    margin-bottom: 24px;
+    font-family: var(--font-mono);
+    font-size: 0.85rem;
+}
+.admin-nav a { color: var(--text-dim); text-decoration: none; }
+.admin-nav a.active,
+.admin-nav a:hover { color: var(--text-bright); }
+.dash { display: grid; gap: 24px; }
+.dash-tile h2 a { color: inherit; text-decoration: none; }
+.stats {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 12px;
+    margin: 12px 0 16px;
+}
+.stats div {
+    background: var(--surface);
+    border: 1px solid var(--border);
+    border-radius: 4px;
+    padding: 12px;
+    text-align: center;
+}
+.stats b { display: block; font-size: 1.4rem; color: var(--text-bright); font-variant-numeric: tabular-nums; }
+.stats span { font-size: 0.75rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em; }
+
 /* Invoices */
 .invoice-list {
     width: 100%;

test/bingo_test.rb

@@ -253,6 +253,30 @@ class BingoTest < Minitest::Test
     assert_equal 401, last_response.status
   end
 
+  def test_admin_dashboard
+    @app = AsxpioWeb
+    hit!(2)
+    DB.connection[:invoices].delete
+    inv = Invoice.build(client_name: 'ACME', client_email: 'b@example.com', currency: 'EUR', gel_rate: '3.05',
+                        due_on: (Date.today - 1).to_s,
+                        items: [{ 'description' => 'work', 'qty' => '2', 'unit_price' => '50' }])
+    inv.pdf_key = "invoices/#{inv.number}-#{inv.uuid}.pdf"
+    inv.save_changes
+    get '/admin', {}, admin_env
+    assert last_response.ok?, last_response.status.to_s
+    body = last_response.body
+    assert_includes body, '<h1>Dashboard</h1>'
+    assert_includes body, '1/25'                       # crossed out
+    assert_includes body, 'Авария 2'                   # latest incident
+    assert_includes body, 'href="/admin/invoices/new"'
+    assert_includes body, 'class="active">dashboard'
+    assert_includes body, inv.number
+    assert_includes body, 'EUR 100.00'                 # outstanding total
+    assert_match %r{<b>1</b><span>overdue</span>}, body
+  ensure
+    DB.connection[:invoices].delete
+  end
+
   def test_admin_records_and_deletes_incident
     @app = AsxpioWeb
     get '/admin/bingo', {}, admin_env

views/admin/_nav.erb

@@ -0,0 +1,5 @@
+<nav class="admin-nav">
+    <% [['/admin', 'dashboard'], ['/admin/invoices', 'invoices'], ['/admin/bingo', 'bingo']].each do |href, label| %>
+        <a href="<%= href %>" class="<%= 'active' if href == '/admin' ? request.path == '/admin' : request.path.start_with?(href) %>"><%= label %></a>
+    <% end %>
+</nav>

views/admin/bingo/index.erb

@@ -1,8 +1,8 @@
+<%== erb :'admin/_nav', layout: false %>
 <div class="header">
     <h1>Bingo</h1>
     <p class="tagline">
-        <a href="/admin/invoices">invoices</a>
-        <% if bingo_public_url %> · <a href="<%= bingo_public_url %>" target="_blank" rel="noopener">public card ↗</a><% end %>
+        <% if bingo_public_url %><a href="<%= bingo_public_url %>" target="_blank" rel="noopener">public card ↗</a><% end %>
     </p>
 </div>
 

views/admin/dashboard.erb

@@ -0,0 +1,49 @@
+<%== erb :'admin/_nav', layout: false %>
+<div class="header">
+    <h1>Dashboard</h1>
+</div>
+
+<div class="dash">
+    <section class="section dash-tile">
+        <h2><a href="/admin/invoices">Invoices</a></h2>
+        <div class="stats">
+            <div><b><%= @inv[:count] %></b><span>total</span></div>
+            <div><b><%= @inv[:unpaid].size %></b><span>unpaid</span></div>
+            <div><b><%= @inv[:overdue] %></b><span>overdue</span></div>
+        </div>
+        <% if @inv[:unpaid_totals].any? %>
+            <p class="optional">Outstanding: <span class="mono"><%= @inv[:unpaid_totals].map { |cur, sum| "#{cur} #{'%.2f' % sum}" }.join(' · ') %></span></p>
+        <% end %>
+        <% if @inv[:recent].any? %>
+            <table class="invoice-list">
+                <tbody>
+                    <% @inv[:recent].each do |inv| %>
+                        <tr>
+                            <td class="mono"><a href="/admin/invoices/<%= inv.uuid %>"><%= inv.number %></a></td>
+                            <td><%= inv.client_name %></td>
+                            <td class="num mono"><%= inv.currency %> <%= '%.2f' % inv.total %></td>
+                            <td><span class="badge badge-<%= inv.status %>"><%= inv.status %></span></td>
+                        </tr>
+                    <% end %>
+                </tbody>
+            </table>
+        <% end %>
+        <p><a href="/admin/invoices/new">+ New invoice</a> · <a href="/admin/invoices">all invoices</a></p>
+    </section>
+
+    <section class="section dash-tile">
+        <h2><a href="/admin/bingo">Bingo</a></h2>
+        <div class="stats">
+            <div><b><%= @bingo[:hit] %>/<%= @bingo[:cells] %></b><span>crossed out</span></div>
+            <div><b><%= @bingo[:lines] %></b><span>lines</span></div>
+            <div><b><%= @bingo[:reserve] %></b><span>in reserve</span></div>
+        </div>
+        <% if (last = @bingo[:last_incident]) %>
+            <p>Latest: <span class="mono"><%= last.occurred_on %></span> <%= Bingo::ICONS[last.kind] %> <%= last.datacenter.name_ru %> — <%= last.title_ru %></p>
+        <% end %>
+        <% if @bingo[:no_photo].any? %>
+            <p class="optional">No photo on the card: <%= @bingo[:no_photo].map(&:name_ru).join(', ') %></p>
+        <% end %>
+        <p><a href="/admin/bingo">manage</a><% if bingo_public_url %> · <a href="<%= bingo_public_url %>" target="_blank" rel="noopener">public card ↗</a><% end %></p>
+    </section>
+</div>

views/admin/invoices/index.erb

@@ -1,6 +1,7 @@
+<%== erb :'admin/_nav', layout: false %>
 <div class="header">
     <h1>Invoices</h1>
-    <p class="tagline"><a href="/admin/invoices/new">+ New invoice</a> · <a href="/admin/bingo">bingo</a></p>
+    <p class="tagline"><a href="/admin/invoices/new">+ New invoice</a></p>
 </div>
 
 <% if @invoices.empty? %>