docs + fix: Leads module doc, badges onsite doc, license access fix, QR log cleanup

- Add MODULE__AE_Events_Exhibitor_Leads.md — full module reference (auth model, tabs,
  data model, routes, offline/PWA notes, OSIT admin notes)
- Add MODULE__AE_Events_Badges_Onsite.md — onsite printing guide (browser settings,
  CUPS/Linux setup, Zebra ZC10L section with test results, Epson stub, troubleshooting)
- Archive PROJECT__AE_Events_Exhibitor_Leads_v3*.md + Zebra test day doc → history/
- Fix leads license management access: ae_tab__manage.svelte license section now visible
  to administrator_access OR shared-passcode sign-in (type === 'shared'); matches spec
- Add type field to LeadsLocState.auth_exhibit_kv interface (was set at runtime but missing from type)
- Silence QR code console noise: entry log gated at log_lvl >= 2, data URL log removed
- vite.config.ts: exclude documentation/ and tests/ from Vite HMR file watcher

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

src/lib/stores/ae_events_stores__leads_defaults.ts

@@ -29,8 +29,8 @@ export interface LeadsLocState {
     tracking__qry__sort_order: string;
     tracking__qry__licensee_email: string;
     entered_passcode: string | null;
-    // Value shape: { key: string; updated_on: string } — entries expire after a configurable max age.
-    auth_exhibit_kv: Record<string, { key: string; updated_on: string }>;
+    // Value shape: key = passcode/email used; type = 'shared' | 'licensed'; entries expire after a configurable max age.
+    auth_exhibit_kv: Record<string, { key: string; type: string; updated_on: string }>;
     edit_license_li: boolean;
     // Key = exhibit ID (random), value = last-used tab name.
     tab: Record<string, string>;