feat(badges): public_access kiosk mode + manager access improvements

- Public (attendee) kiosk: unprinted badges link to /review; printed
  badges show green "Checked in · Nx · First/Last" row (non-clickable)
- Public attendees no longer see Print button (staff-only action)
- Printed badges sort to end of list for public non-trusted users
- Manager access: Print (reprint) and Email Link buttons always visible
  without requiring Edit Mode; main row behavior unchanged
- Empty state wording: context-aware — "Enter your name above to find
  your badge" for public users with no query vs "No badges found" after
  an actual search
- Docs: Epson C3500 fanfold section filled in (was empty placeholder);
  style_href/duplex implementation status corrected in badge templates
  doc; Axonius C3500 layout TODO marked complete

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

documentation/MODULE__AE_Events_Badge_Templates.md

@@ -114,17 +114,19 @@ corresponding `ticket_N_text` on the template provides the HTML rendered on the
 | `priority`, `sort`, `group` | int/str | Standard AE sort fields |
 | `notes` | str | Internal notes |
 
-### New Field (pending backend addition)
+### Duplex / Single-Sided
 | Field | Type | Notes |
 |---|---|---|
-| `duplex` | bool | **Planned** — when `false`, back section is hidden from print (`@media print`) |
+| `duplex` | bool | When `false`, back section is hidden from print (`@media print`) |
 
 The `duplex` field controls whether the back-of-badge section renders during printing.
 When `false` (single-sided), `badge_back` gets `print:hidden` applied so only the front
 prints. The back section still displays on screen for configuration reference.
 
-The first event using this system (Axonius, NYC, mid-April 2026) uses single-sided PVC
-cards on a Zebra ZC10L — `duplex` will be `false` for that event's templates.
+`duplex` is in `properties_to_save` and `show_badge_back` is derived from it in
+`ae_comp__badge_obj_view.svelte`. (Verified 2026-03-18)
+
+Axonius events use `duplex = false` — single-sided printing only.
 
 ---
 
@@ -155,7 +157,7 @@ The print page (`print/+page.svelte`) or the badge view should conditionally add
 </svelte:head>
 ```
 
-This is not yet implemented — tracked as a pending Phase 1 item.
+This is implemented — `style_href` loads via `<svelte:head>` in `print/+page.svelte` and is included in `properties_to_save`. (Verified 2026-03-18)
 
 ### CSS Scope
 
@@ -218,7 +220,6 @@ The `properties_to_save` array in `ae_events__event_badge_template.ts` controls
 gets cached locally. Current state — fields **NOT** in properties_to_save that exist
 in DB and may be needed:
 
-- `style_href` — needed once external CSS is wired via `<svelte:head>`
 - `passcode` — not needed client-side
 - `footer_title`, `footer_left`, `footer_right` — not needed (legacy)
 - `header_background`, `footer_background` — not needed (legacy)