feat: leads re-enable flow — detect removed leads on scan + Remove/Restore buttons

- QR scanner (single + multi): detect previously-removed leads via IDB enable flag;
  route to 'reenable' state instead of duplicate error; offer Re-activate button
- API fallback: if create fails and no IDB record, search API for disabled tracking
  record by event_exhibit_id + event_badge_id (adds qry_badge_id param to
  search__exhibit_tracking)
- Lead detail page: Replace raw enable checkbox with Remove Lead (two-click confirm,
  navigates back after) and Restore Lead card (shown when enable is falsy)
- Fix flash of disabled records in leads list: filter !enable in both filtered_lead_li
  derived and local IDB fast-path in handle_search_refresh
- eslint.config.js: disable svelte/no-navigation-without-resolve (no base path configured)
- Also includes _random field annotation cleanup (db_events, ae_types), iframe layout
  fixes, badge view tweaks, test updates, and doc updates from prior session

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

src/routes/events/[event_id]/(badges)/badges/[badge_id]/ae_comp__badge_obj_view.svelte

@@ -378,7 +378,7 @@
         <!-- *** badge_front section start *** -->
         <section
             class="badge_front badge_type__{effective_badge_type_code.toLowerCase()}
-        flex flex-col gap-1
+        flex flex-col gap-0
         items-stretch justify-between
         min-h-[6.0in]
         max-h-[6.0in]
@@ -394,12 +394,12 @@
         >
             <span
                 class="
-            print:hidden absolute top-1 left-4
-            text-xs italic
-            text-gray-500 group-hover:text-red-800
-            transition-all
-            "
-            >
+                print:hidden absolute top-1 left-4
+                text-xs italic
+                text-gray-500 group-hover:text-red-800
+                transition-all
+                "
+                >
                 {#if show_badge_back}Front of badge{:else}Badge preview{/if}
             </span>
 
@@ -443,7 +443,8 @@
             <div
                 class="badge_body
             grow
-            max-h-[4in] m-0 p-0
+            m-0 p-0
+            px-1
             overflow-clip
             flex flex-col gap-1
             items-stretch justify-between
@@ -578,7 +579,7 @@
                             {:then result}
                                 {#if result}
                                     <img
-                                        class="qr_code mecard_qr w-[0.75in] max-w-[0.75in]"
+                                        class="qr_code w-[1.10in] max-w-[1.10in] m-0 p-0"
                                         src={result}
                                         alt="Badge QR code"
                                     />
@@ -597,6 +598,7 @@
             max-w-full
             m-0 p-0
             overflow-hidden
+            border-t-2 border-blue-500/75
             flex flex-row gap-1 items-center justify-center
             hover:outline-2 hover:outline-dashed hover:outline-gray-500/75
             "