hub: unified customer page, blocked status, dashboard merge

- Replace separate config detail and report detail pages with unified
  /customers/{id} page showing both config info and live report data
- Add "blocked" status for customers (hidden from dashboard, notifications
  suppressed, still accepts reports)
- Dashboard now shows config-only customers as "PENDING" status
- Customers list: all rows link to /customers/{id}, show BLOCKED badge
- New actions: block/unblock, push config to controller, auto-create
  config from report data
- /configs/{id} now redirects to /customers/{id}
- Add config-badge CSS classes for MANAGED/MANUAL/BLOCKED badges

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

hub/internal/web/templates/style.css

@@ -125,6 +125,35 @@ header h1 {
 .status-badge-warn { background: rgba(250, 204, 21, 0.15); color: var(--yellow); }
 .status-badge-down, .status-badge-fail { background: rgba(248, 113, 113, 0.15); color: var(--red); }
 .status-badge-disabled { background: #475569; color: #e2e8f0; }
+.status-badge-pending { background: rgba(148, 163, 184, 0.15); color: #94a3b8; }
+.status-badge-blocked { background: rgba(248, 113, 113, 0.15); color: #f87171; }
+
+/* Config badges */
+.config-badge {
+    display: inline-block;
+    padding: 0.15em 0.5em;
+    border-radius: 4px;
+    font-size: 0.75rem;
+    font-weight: 600;
+    letter-spacing: 0.03em;
+}
+.config-badge-managed { background: rgba(74, 222, 128, 0.15); color: #4ade80; }
+.config-badge-manual { background: #475569; color: #e2e8f0; }
+.config-badge-blocked { background: rgba(248, 113, 113, 0.2); color: #f87171; }
+
+/* Blocked banner */
+.flash-blocked {
+    background: rgba(248, 113, 113, 0.1);
+    border: 1px solid rgba(248, 113, 113, 0.3);
+    color: #fca5a5;
+    padding: 0.75rem 1rem;
+    border-radius: 6px;
+    margin-bottom: 1rem;
+    font-size: 0.9rem;
+}
+
+/* Blocked row in tables */
+.row-blocked { opacity: 0.5; }
 
 /* Cards */
 .card {