Fixed volunteer filters.

frontend/src/pages/ScheduleBoard.svelte

@@ -414,7 +414,10 @@
                     <div class="board-assign-row">
                       <select bind:value={assignVolID} style="width:auto">
                         <option value={0}>— Select volunteer —</option>
-                        {#each $allVolunteers ?? [] as v}
+                        {#each ($allVolunteers ?? [])
+                          .filter(v => v.department_id === shift.department_id)
+                          .filter(v => !assigned.some(a => a.volunteer.id === v.id))
+                          as v}
                           <option value={v.id}>{v.name}</option>
                         {/each}
                       </select>

frontend/src/pages/Volunteers.svelte

@@ -29,10 +29,11 @@
   const canConfirm = $derived(['admin', 'staffing', 'colead'].includes(role))
   const myDeptIDs = $derived(session?.user?.department_ids ?? [])
 
-  // Auto-filter coleads to their department on mount
+  let deptInitialized = $state(false)
   $effect(() => {
-    if (role === 'colead' && myDeptIDs.length > 0 && !filterDept) {
+    if (!deptInitialized && role === 'colead' && myDeptIDs.length > 0) {
       filterDept = String(myDeptIDs[0])
+      deptInitialized = true
     }
   })
 
@@ -228,7 +229,7 @@
     {/if}
     <select bind:value={filterStatus} style="width:auto">
       <option value="">All statuses</option>
-      <option value="unconfirmed">Unconfirmed</option>
+      <option value="unconfirmed">Unregistered</option>
       <option value="registered">Registered</option>
       <option value="confirmed">Confirmed</option>
       <option value="ready">Ready</option>
@@ -321,7 +322,7 @@
                   {:else if v.email_confirmed}
                     <span class="badge badge-registered">Registered</span>
                   {:else}
-                    <span class="badge badge-unchecked">Unconfirmed</span>
+                    <span class="badge badge-unchecked">Unregistered</span>
                   {/if}
                   {#if v.ready_at}
                     <div class="text-muted" style="font-size:0.75rem">