v0.95.0: enrollment wizards use the raw-device scan /disks/candidates (Impl-2b)

Both wizards now source candidates from the agent's Impl-2a raw-device scan
(GET /disks/candidates, proxied) instead of the Observe-based /api/disks — so a
brand-new non-PVE-storage drive is finally discoverable + enrollable end-to-end.
agentapi.ListCandidates + a passthrough proxy (no controller-side filtering; the
agent's unclaimed filter is authoritative). storage_init renders `initialize`,
storage_attach renders `attach`; the enroll flow + Impl-1 guarded mkfs unchanged.
Tests + go build/vet/test clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

controller/internal/web/templates/storage_init.html

@@ -66,32 +66,35 @@ function esc(s){ return String(s==null?'':s).replace(/[&<>"]/g,function(c){retur
 
 function dataBadge(d){
   return d.data_bearing
-    ? '<span class="badge badge-error" title="'+esc(d.data_reason)+'">Adatot tartalmaz</span>'
+    ? '<span class="badge badge-error">Adatot tartalmaz — a formázás törli</span>'
     : '<span class="badge badge-ok">Üres — formázható</span>';
 }
-function classBadge(d){
-  if(d.class==='fast') return '<span class="badge badge-ok">gyors</span>';
-  if(d.class==='slow') return '<span class="badge badge-muted">lassú</span>';
-  return '';
+function fmtSize(b){
+  if(!b) return '';
+  var g=b/1073741824;
+  return g>=1 ? g.toFixed(g>=10?0:1)+' GB' : Math.round(b/1048576)+' MB';
 }
 
 async function loadDisks(){
   try{
-    var r = await fetch('/api/disks'); var j = await r.json();
+    // Impl-2b: the raw-device scan (agent GET /disks/candidates via the controller proxy). The agent's
+    // unclaimed-disk filter already excludes OS/enrolled/claimed disks (fail-safe), so we trust the list
+    // as-is — no client-side filtering. `initialize` = every unclaimed disk (blank or data-bearing).
+    var r = await fetch('/api/disks/candidates'); var j = await r.json();
     if(!j.ok){ throw new Error(j.error||'Hiba'); }
-    var disks = (j.data&&j.data.disks)||[];
-    // Only USER-DATA drives with a block device that are NOT already mounted are valid init (format)
-    // targets — a mounted drive must be ejected (Leválasztás) first, like the attach wizard. This
-    // keeps an already-managed drive (e.g. felhom-usb) from showing up as an "initialize" candidate.
-    var formattable = disks.filter(function(d){ return d.backing_device!=="" && d.role==='user-data' && !d.mount_path; });
-    if(formattable.length===0){ document.getElementById('disk-list').innerHTML='<p class="form-hint">Nincs formázható felhasználói adatmeghajtó. (A csatlakoztatott meghajtókat előbb le kell választani; a rendszer- és biztonsági-mentés meghajtók védettek.)</p>'; return; }
+    var cands = (j.data&&j.data.initialize)||[];
+    if(cands.length===0){ document.getElementById('disk-list').innerHTML='<p class="form-hint">Nincs elérhető meghajtó az inicializáláshoz. Csatlakoztasson egy új adathordozót — a rendszer-, a biztonsági mentés- és a már használatban lévő meghajtók itt nem jelennek meg.</p>'; return; }
     var html='<div class="drive-list">';
-    formattable.forEach(function(d,i){
-      var sub = esc(d.type)+' · '+esc(d.backing_device)+(d.mount_path?' · '+esc(d.mount_path):'');
+    cands.forEach(function(d,i){
+      var title = d.model ? esc(d.model) : esc(d.device);
+      var parts = [esc(d.device)];
+      if(d.size_bytes) parts.push(fmtSize(d.size_bytes));
+      if(d.fstype) parts.push('jelenlegi: '+esc(d.fstype));
+      var sub = parts.join(' · ');
       html+='<label class="drive-card role-user-data is-selectable" id="dc-'+i+'">'
-        +'<div class="drive-card-top"><div class="drive-select"><input type="radio" name="disk" value="'+esc(d.backing_device)+'" data-db="'+(d.data_bearing?'1':'0')+'" data-i="'+i+'" onchange="pickDisk(this)">'
-        +'<div class="drive-id"><span class="drive-name">'+esc(d.name)+'</span><span class="drive-sub">'+sub+'</span></div></div>'
-        +'<div class="drive-badges"><span class="badge badge-ok">Felhasználói adat</span>'+classBadge(d)+dataBadge(d)+'</div></div></label>';
+        +'<div class="drive-card-top"><div class="drive-select"><input type="radio" name="disk" value="'+esc(d.device)+'" data-db="'+(d.data_bearing?'1':'0')+'" data-i="'+i+'" onchange="pickDisk(this)">'
+        +'<div class="drive-id"><span class="drive-name">'+title+'</span><span class="drive-sub">'+sub+'</span></div></div>'
+        +'<div class="drive-badges">'+dataBadge(d)+'</div></div></label>';
     });
     html+='</div>';
     document.getElementById('disk-list').innerHTML=html;