Complete Exhibitor Leads Authentication and Portal Structure

- Implemented dual-mode Sign-In (Shared Passcode / Licensed User) with persistent state.
- Added Manager Bypass logic for seamless admin access.
- Implemented Welcome/Start tab with redirection to Lead List upon authentication.
- Added Sign-Out functionality and Header navigation improvements.
- Integrated all Manage tab sub-sections (Licenses, Questions, Payment).

src/routes/events/[event_id]/(leads)/leads/exhibit/[exhibit_id]/+page.svelte

@@ -19,7 +19,8 @@
         List as ListIcon,
         LogIn,
         LayoutGrid,
-        Search
+        Search,
+        LogOut
     } from 'lucide-svelte';
     import Comp_exhibit_tracking_search from './ae_comp__exhibit_tracking_search.svelte';
     import Comp_exhibit_tracking_obj_li from './ae_comp__exhibit_tracking_obj_li.svelte';
@@ -45,8 +46,22 @@
             $events_loc.leads.refresh_interval_sec = 25;
     }
 
+        // --- Sign-In State (Derived) ---
+        // 1. Manager Access (Bypass) OR 2. Valid Exhibit Auth entry
+        let is_signed_in = $derived(
+            $ae_loc.manager_access || 
+            !!$events_loc.leads.auth_exhibit_kv?.[page.params.exhibit_id ?? '']
+        );
+
         // --- Tab State (Sticky via Store) ---
-        let active_tab = $derived($events_loc.leads.tab?.[page.params.exhibit_id ?? ''] ?? 'list');
+        let active_tab = $derived.by(() => {
+            const exhibit_id = page.params.exhibit_id;
+            if (!exhibit_id) return 'start';
+            const saved_tab = $events_loc.leads.tab?.[exhibit_id] ?? 'list';
+            // If signed in but stuck on start tab, go to list
+            if (is_signed_in && saved_tab === 'start') return 'list';
+            return saved_tab;
+        });
         let previous_main_tab = $state('list'); // To remember if we were on 'add' or 'list' before going to 'manage'
     
         function set_active_tab(new_tab: string) {
@@ -56,9 +71,6 @@
             $events_loc.leads.tab[exhibit_id] = new_tab;
         }
     
-        // Mock sign-in state for now
-        let is_signed_in = $state(true); 
-    
         let tracking_id_li: Array<string> = $state([]);    let search_debounce_timer: any = null;
     let last_search_id = 0;
     let last_executed_key = '';
@@ -296,6 +308,16 @@
             set_active_tab('manage');
         }
     }
+
+    function handle_signout() {
+        const exhibit_id = page.params.exhibit_id;
+        if (!exhibit_id) return;
+        if (confirm('Sign out from this booth?')) {
+            delete $events_loc.leads.auth_exhibit_kv[exhibit_id];
+            $events_sess.leads.entered_passcode = null;
+            set_active_tab('start');
+        }
+    }
 </script>
 
 <section
@@ -311,46 +333,58 @@
         </div>
 
         <div class="flex items-center gap-1 sm:gap-2">
-            <!-- Add Lead / Lead List Toggle -->
-            <button
-                type="button"
-                class="btn btn-sm variant-filled-primary font-bold shadow-sm px-2 sm:px-4"
-                onclick={toggle_main_tab}
-            >
-                {#if active_tab === 'add'}
-                    <ListIcon size="1.25em" class="sm:mr-2" />
-                    <span class="hidden sm:inline">Lead List</span>
-                {:else}
-                    <Plus size="1.25em" class="sm:mr-2" />
-                    <span class="hidden sm:inline">Add Lead</span>
-                {/if}
-            </button>
+            {#if is_signed_in}
+                <!-- Add Lead / Lead List Toggle -->
+                <button
+                    type="button"
+                    class="btn btn-sm variant-filled-primary font-bold shadow-sm px-2 sm:px-4"
+                    onclick={toggle_main_tab}
+                >
+                    {#if active_tab === 'add'}
+                        <ListIcon size="1.25em" class="sm:mr-2" />
+                        <span class="hidden sm:inline">Lead List</span>
+                    {:else}
+                        <Plus size="1.25em" class="sm:mr-2" />
+                        <span class="hidden sm:inline">Add Lead</span>
+                    {/if}
+                </button>
 
-            <!-- Payment (Conditional) -->
-            {#if $ae_loc.show_leads_payment}
+                <!-- Payment (Conditional) -->
+                {#if $ae_loc.show_leads_payment}
+                    <button
+                        type="button"
+                        class="btn btn-sm transition-colors px-2 sm:px-3"
+                        class:variant-filled-success={active_tab === 'payment'}
+                        class:variant-ghost-success={active_tab !== 'payment'}
+                        onclick={() => set_active_tab('payment')}
+                        title="Payment & Upgrades"
+                    >
+                        <CreditCard size="1.25em" />
+                    </button>
+                {/if}
+
+                <!-- Manage / Config -->
                 <button
                     type="button"
                     class="btn btn-sm transition-colors px-2 sm:px-3"
-                    class:variant-filled-success={active_tab === 'payment'}
-                    class:variant-ghost-success={active_tab !== 'payment'}
-                    onclick={() => set_active_tab('payment')}
-                    title="Payment & Upgrades"
+                    class:variant-filled-surface={active_tab === 'manage'}
+                    class:variant-ghost-surface={active_tab !== 'manage'}
+                    onclick={toggle_manage_tab}
+                    title="Manage Exhibit"
                 >
-                    <CreditCard size="1.25em" />
+                    <Settings size="1.25em" />
+                </button>
+
+                <!-- Sign Out -->
+                <button
+                    type="button"
+                    class="btn btn-sm variant-ghost-error px-2 sm:px-3"
+                    onclick={handle_signout}
+                    title="Sign Out"
+                >
+                    <LogOut size="1.25em" />
                 </button>
             {/if}
-
-            <!-- Manage / Config -->
-            <button
-                type="button"
-                class="btn btn-sm transition-colors px-2 sm:px-3"
-                class:variant-filled-surface={active_tab === 'manage'}
-                class:variant-ghost-surface={active_tab !== 'manage'}
-                onclick={toggle_manage_tab}
-                title="Manage Exhibit"
-            >
-                <Settings size="1.25em" />
-            </button>
         </div>
     </header>
 

src/routes/events/[event_id]/(leads)/leads/exhibit/[exhibit_id]/ae_comp__exhibit_signin.svelte

@@ -1,11 +1,203 @@
 <script lang="ts">
     /**
      * src/routes/events/[event_id]/(leads)/leads/exhibit/[exhibit_id]/ae_comp__exhibit_signin.svelte
-     * Exhibitor Login Form Stub.
+     * Exhibitor Sign-In Component - Handles both Shared Passcode and Licensed User login.
      */
+    import { page } from '$app/state';
+    import { liveQuery } from 'dexie';
+    import { db_events } from '$lib/ae_events/db_events';
+    import { events_loc, events_sess } from '$lib/stores/ae_events_stores';
+    import { Key, Mail, Lock, User, ArrowRight, LoaderCircle, AlertCircle, CheckCircle2 } from 'lucide-svelte';
+    import { untrack } from 'svelte';
+
+    const exhibit_id = $derived(page.params.exhibit_id ?? '');
+
+    let lq__exhibit_obj = $derived(
+        liveQuery(async () => {
+            if (!exhibit_id) return null;
+            return await db_events.exhibit.get(exhibit_id);
+        })
+    );
+
+    // Form State
+    let signin_mode = $state('passcode'); // 'passcode' or 'licensed'
+    let passcode = $state('');
+    let email = $state('');
+    let user_passcode = $state('');
+    let status = $state('idle'); // 'idle', 'submitting', 'error', 'success'
+    let error_msg = $state('');
+
+    async function handle_signin() {
+        if (!$lq__exhibit_obj) return;
+        status = 'submitting';
+        error_msg = '';
+
+        // Delay for better UX
+        await new Promise(r => setTimeout(r, 800));
+
+        if (signin_mode === 'passcode') {
+            // 1. Shared Passcode logic
+            if (passcode === $lq__exhibit_obj.staff_passcode) {
+                // SUCCESS
+                complete_signin($lq__exhibit_obj.staff_passcode, 'shared');
+            } else {
+                status = 'error';
+                error_msg = 'Invalid shared passcode. Please check with your booth manager.';
+            }
+        } else {
+            // 2. Licensed User logic
+            try {
+                const licenses = JSON.parse($lq__exhibit_obj.license_li_json || '[]');
+                const found = licenses.find((l: any) => l.email.toLowerCase() === email.toLowerCase().trim());
+                
+                if (found && found.passcode === user_passcode) {
+                    // SUCCESS
+                    complete_signin(found.email, 'licensed');
+                } else {
+                    status = 'error';
+                    error_msg = 'Invalid email or personal passcode.';
+                }
+            } catch (e) {
+                status = 'error';
+                error_msg = 'System error validating licenses.';
+            }
+        }
+    }
+
+    function complete_signin(key: string, type: string) {
+        status = 'success';
+        
+        // Save to persistent store
+        if (!$events_loc.leads.auth_exhibit_kv) $events_loc.leads.auth_exhibit_kv = {};
+        
+        $events_loc.leads.auth_exhibit_kv[exhibit_id] = {
+            key: key,
+            type: type,
+            updated_on: new Date().toISOString()
+        };
+
+        // Also update session passcode if shared mode
+        if (type === 'shared') {
+            $events_sess.leads.entered_passcode = key;
+        }
+
+        // Trigger a reload or UI update if needed
+        // (The parent +page.svelte should reactively update is_signed_in)
+    }
 </script>
 
-<div class="exhibit-signin p-4 card">
-    <h3 class="h3">Exhibitor Sign In</h3>
-    <p>Placeholder for login logic.</p>
+<div class="exhibit-signin card p-6 variant-filled-surface shadow-xl border border-surface-500/20 space-y-6">
+    
+    <!-- Tab Toggle -->
+    <div class="flex p-1 bg-surface-500/10 rounded-xl">
+        <button 
+            class="flex-1 flex items-center justify-center gap-2 py-2 rounded-lg text-sm font-bold transition-all"
+            class:bg-surface-100-900={signin_mode === 'passcode'}
+            class:shadow-sm={signin_mode === 'passcode'}
+            class:opacity-50={signin_mode !== 'passcode'}
+            onclick={() => signin_mode = 'passcode'}
+        >
+            <Lock size="1.2em" /> Shared Code
+        </button>
+        <button 
+            class="flex-1 flex items-center justify-center gap-2 py-2 rounded-lg text-sm font-bold transition-all"
+            class:bg-surface-100-900={signin_mode === 'licensed'}
+            class:shadow-sm={signin_mode === 'licensed'}
+            class:opacity-50={signin_mode !== 'licensed'}
+            onclick={() => signin_mode = 'licensed'}
+        >
+            <User size="1.2em" /> Licensed User
+        </button>
+    </div>
+
+    <!-- Forms -->
+    <form onsubmit={(e) => { e.preventDefault(); handle_signin(); }} class="space-y-4">
+        
+        {#if signin_mode === 'passcode'}
+            <div class="space-y-2 animate-in fade-in slide-in-from-left-2">
+                <label class="label">
+                    <span class="text-[10px] uppercase font-bold opacity-50 ml-1 tracking-widest">Booth Passcode</span>
+                    <div class="input-group input-group-divider grid-cols-[auto_1fr] variant-soft rounded-xl overflow-hidden border border-surface-500/20">
+                        <div class="input-group-shim"><Key size="1.2em" /></div>
+                        <input 
+                            type="text" 
+                            bind:value={passcode} 
+                            placeholder="Enter shared code..." 
+                            class="bg-transparent font-mono tracking-[0.3em] font-bold text-center"
+                            autocomplete="off"
+                        />
+                    </div>
+                </label>
+            </div>
+        {:else}
+            <div class="space-y-4 animate-in fade-in slide-in-from-right-2">
+                <label class="label">
+                    <span class="text-[10px] uppercase font-bold opacity-50 ml-1 tracking-widest">Email Address</span>
+                    <div class="input-group input-group-divider grid-cols-[auto_1fr] variant-soft rounded-xl overflow-hidden border border-surface-500/20">
+                        <div class="input-group-shim"><Mail size="1.2em" /></div>
+                        <input 
+                            type="email" 
+                            bind:value={email} 
+                            placeholder="your@email.com" 
+                            class="bg-transparent"
+                        />
+                    </div>
+                </label>
+
+                <label class="label">
+                    <span class="text-[10px] uppercase font-bold opacity-50 ml-1 tracking-widest">Personal Passcode</span>
+                    <div class="input-group input-group-divider grid-cols-[auto_1fr] variant-soft rounded-xl overflow-hidden border border-surface-500/20">
+                        <div class="input-group-shim"><Key size="1.2em" /></div>
+                        <input 
+                            type="text" 
+                            bind:value={user_passcode} 
+                            placeholder="Your code..." 
+                            class="bg-transparent font-mono font-bold"
+                            autocomplete="off"
+                        />
+                    </div>
+                </label>
+            </div>
+        {/if}
+
+        {#if status === 'error'}
+            <div class="p-3 rounded-lg variant-soft-error flex items-start gap-3 animate-shake">
+                <AlertCircle size="1.2em" class="shrink-0 mt-0.5" />
+                <p class="text-xs font-bold leading-tight">{error_msg}</p>
+            </div>
+        {/if}
+
+        <button 
+            type="submit" 
+            class="btn btn-lg variant-filled-primary w-full font-bold shadow-lg shadow-primary-500/20 group"
+            disabled={status === 'submitting'}
+        >
+            {#if status === 'submitting'}
+                <LoaderCircle size="1.5em" class="animate-spin mr-2" />
+                Signing In...
+            {:else if status === 'success'}
+                <CheckCircle2 size="1.5em" class="mr-2" />
+                Welcome!
+            {:else}
+                Get Started <ArrowRight size="1.2em" class="ml-2 group-hover:translate-x-1 transition-transform" />
+            {/if}
+        </button>
+    </form>
+
+    <p class="text-[10px] text-center opacity-40 italic">
+        Check your welcome email or ask your booth manager for login details.
+    </p>
+
 </div>
+
+<style lang="postcss">
+    /* Shake animation for errors */
+    @keyframes shake {
+        0%, 100% { transform: translateX(0); }
+        25% { transform: translateX(-4px); }
+        75% { transform: translateX(4px); }
+    }
+    .animate-shake {
+        animation: shake 0.2s ease-in-out 0s 2;
+    }
+</style>

src/routes/events/[event_id]/(leads)/leads/exhibit/[exhibit_id]/ae_tab__start.svelte

@@ -1,7 +1,64 @@
 <script lang="ts">
-    // Page for viewing/editing a single lead
+    /**
+     * src/routes/events/[event_id]/(leads)/leads/exhibit/[exhibit_id]/ae_tab__start.svelte
+     * Tab 1: Start / Sign In / Welcome.
+     */
+    import { page } from '$app/state';
+    import { liveQuery } from 'dexie';
+    import { db_events } from '$lib/ae_events/db_events';
+    import Comp_exhibit_signin from './ae_comp__exhibit_signin.svelte';
+    import { LayoutGrid, CheckCircle2, UserCheck, ShieldCheck } from 'lucide-svelte';
+
+    const exhibit_id = $derived(page.params.exhibit_id ?? '');
+
+    let lq__exhibit_obj = $derived(
+        liveQuery(async () => {
+            if (!exhibit_id) return null;
+            return await db_events.exhibit.get(exhibit_id);
+        })
+    );
 </script>
 
-<h1 class="h1">Lead Details</h1>
+<div class="ae-tab-start w-full space-y-8 animate-in fade-in slide-in-from-bottom-2 duration-300">
+    
+    <!-- Hero / Welcome Section -->
+    <section class="text-center space-y-4 py-6">
+        <div class="inline-flex p-4 rounded-full bg-primary-500/10 text-primary-500 mb-2">
+            <LayoutGrid size="3em" />
+        </div>
+        <h2 class="text-3xl font-black tracking-tight">
+            Welcome to the<br />
+            <span class="text-primary-500">Exhibitor Portal</span>
+        </h2>
+        <p class="text-lg opacity-60 max-w-md mx-auto">
+            Ready to capture leads for <span class="font-bold text-surface-900-100">{$lq__exhibit_obj?.name || 'this exhibit'}</span>?
+        </p>
+    </section>
 
-<p>This page will show the details for a single lead. A Lead is actually in the event_exhibit_tracking table in the MariaDB or exhibit_tracking table in the Indexed DB ae_events_db.</p>
+    <!-- Features Grid (Compact) -->
+    <div class="grid grid-cols-1 sm:grid-cols-3 gap-4 max-w-2xl mx-auto px-4">
+        <div class="flex flex-col items-center text-center p-4 rounded-xl variant-soft-surface">
+            <CheckCircle2 size="1.5em" class="text-success-500 mb-2" />
+            <span class="text-xs font-bold uppercase tracking-wider">Fast Capture</span>
+        </div>
+        <div class="flex flex-col items-center text-center p-4 rounded-xl variant-soft-surface">
+            <UserCheck size="1.5em" class="text-secondary-500 mb-2" />
+            <span class="text-xs font-bold uppercase tracking-wider">Staff IDs</span>
+        </div>
+        <div class="flex flex-col items-center text-center p-4 rounded-xl variant-soft-surface">
+            <ShieldCheck size="1.5em" class="text-primary-500 mb-2" />
+            <span class="text-xs font-bold uppercase tracking-wider">Secure Sync</span>
+        </div>
+    </div>
+
+    <!-- Sign In Area -->
+    <div class="w-full max-w-md mx-auto">
+        <Comp_exhibit_signin />
+    </div>
+
+    <!-- Info Footer -->
+    <div class="text-center pt-8 opacity-40">
+        <p class="text-[10px] uppercase font-black tracking-[0.2em]">Powered by Aether Platform</p>
+    </div>
+
+</div>