fix: add missing each-block keys (svelte/require-each-key)

Fixed all 27 remaining instances across 19 files. Keys used:
- Object ID fields where available (e.g. account_id_random, event_file_id)
- index for logger lists with no reliable unique key
- Property name for Object.entries() loops

src/routes/core/contacts/+page.svelte

@@ -9,9 +9,9 @@
     let contact_li: any[] = $state([]);
     let qry_str = $state('');
     let filtered_li: any[] = $derived(
-        qry_str 
-            ? contact_li.filter(c => 
-                c.name?.toLowerCase().includes(qry_str.toLowerCase()) || 
+        qry_str
+            ? contact_li.filter(c =>
+                c.name?.toLowerCase().includes(qry_str.toLowerCase()) ||
                 c.title?.toLowerCase().includes(qry_str.toLowerCase()) ||
                 c.email?.toLowerCase().includes(qry_str.toLowerCase()) ||
                 c.phone_office?.toLowerCase().includes(qry_str.toLowerCase())
@@ -51,8 +51,8 @@
             </div>
             <h1 class="h2 font-black tracking-tight">Contact Management</h1>
         </div>
-        <button 
-            class="btn btn-sm variant-filled-primary font-bold shadow-lg" 
+        <button
+            class="btn btn-sm variant-filled-primary font-bold shadow-lg"
             onclick={() => show_add_form = !show_add_form}
         >
             {#if show_add_form}
@@ -65,7 +65,7 @@
 
     {#if show_add_form}
         <div class="animate-fade-in">
-            <Contact_form 
+            <Contact_form
                 onSave={(new_con) => {
                     show_add_form = false;
                     load_contacts();
@@ -85,11 +85,11 @@
                 <div class="flex items-center justify-center px-4 bg-surface-300-600-token border-r border-surface-500/20">
                     <Search size={18} class="opacity-50" />
                 </div>
-                <input 
+                <input
                     class="bg-transparent border-0 ring-0 focus:ring-0 p-3 grow placeholder:opacity-50"
-                    type="search" 
-                    bind:value={qry_str} 
-                    placeholder="Search by name, title, email, or phone..." 
+                    type="search"
+                    bind:value={qry_str}
+                    placeholder="Search by name, title, email, or phone..."
                 />
                 <button class="variant-filled-primary font-bold px-10 py-3 hover:brightness-110 transition-all border-l border-surface-500/20 flex items-center justify-center min-w-[100px]" onclick={load_contacts} disabled={loading}>
                     {#if loading}
@@ -121,7 +121,7 @@
             </h3>
 
             <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
-                {#each filtered_li as con}
+                {#each filtered_li as con (con.contact_id_random)}
                     <div class="card p-5 space-y-4 variant-soft-surface shadow-md border border-surface-500/10 hover:border-primary-500/30 transition-all group relative">
                         <div class="absolute top-4 right-4">
                             <span class="badge {con.enable ? 'variant-filled-success' : 'variant-filled-error'} text-[8px] uppercase font-bold shadow-sm">
@@ -138,7 +138,7 @@
                                 <p class="text-[10px] uppercase font-bold opacity-50 truncate">{con.title || 'Support Contact'}</p>
                             </div>
                         </header>
-                        
+
                         <div class="space-y-2 text-xs opacity-70">
                             <div class="flex items-center gap-2 bg-black/5 p-2 rounded-lg">
                                 <Mail size={14} class="text-primary-500 shrink-0" />