feat(badges): add Long Names and Print Throughput reports

Two IDB-backed reports under /badges/reports:
- Long Names: filter badges by given/family/full name length (threshold
  adjustable), colour-coded by severity, links to review page
- Print Throughput: bucket print_last_datetime into 5/15/30/60-min
  windows with a horizontal bar chart and expandable badge name list

Also adds a "Badge Reports" nav link on the badges main page.

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

src/routes/events/[event_id]/(badges)/badges/+page.svelte

@@ -32,7 +32,7 @@ import Comp_badge_obj_li from './ae_comp__badge_obj_li.svelte';
 import Comp_badge_create_form from './ae_comp__badge_create_form.svelte';
 import Comp_badge_upload_form from './ae_comp__badge_upload_form.svelte';
 
-import { UserPlus, Printer, Upload, FileText, ChartColumnBig, LayoutTemplate } from '@lucide/svelte';
+import { UserPlus, Printer, Upload, FileText, ChartColumnBig, LayoutTemplate, TrendingUp } from '@lucide/svelte';
 
 // Load templates for this event so the create form can show the selector and
 // derive badge_type_code_li from whichever template the user picks.
@@ -545,6 +545,11 @@ async function handle_search_refresh(params: any) {
                 class="btn btn-tertiary">
                 <ChartColumnBig size="1em" /> Badge Printing Stats
             </a>
+            <a
+                href={`/events/${$events_slct?.event_id}/badges/reports`}
+                class="btn btn-tertiary">
+                <TrendingUp size="1em" /> Badge Reports
+            </a>
         </div>
     {/if}
 {/if}