controller v0.45.0: storage UX polish — deterministic order, init filter, register shortcut, system-storage clarity

B1 sort /api/disks (user-data→system→backup, alpha within); B2 init wizard
excludes mounted drives; B3 Regisztrálás primary action for mounted-unregistered
user-data drives (POST /api/storage/register); B4 per-card purpose descriptions +
app-backing tags + tiering note (local & local-lvm both kept); B5 eject already
names affected apps. Pairs with felhom-agent v0.24.0 eject role-gate.

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

CHANGELOG.md

@@ -1,5 +1,30 @@
 ## Changelog
 
+### v0.45.0 — storage UX polish: deterministic order, init filter, register shortcut, system-storage clarity (2026-06-12)
+
+Builds on v0.44.0's role-aware drive management. Pairs with felhom-agent v0.24.0 (the eject role-gate
+lives at the agent — see its CHANGELOG). This release is the controller-side clarity/ordering polish.
+
+- **Deterministic disk order (B1)** — `GET /api/disks` now sorts the agent's drive list server-side:
+  **user-data → system → backup** (then unrecognized), alphabetical by storage name within each tier.
+  The agent's storage view iterates an unordered Go map, so the list previously reordered on every
+  reload (CLAUDE.md lesson #3). The customer's manageable drives are now always on top, stably.
+  `sortDisksForView` in `agent_disk_handlers.go` + `TestSortDisksForView`.
+- **Init wizard excludes mounted drives (B2)** — `storage_init.html`'s formattable filter gained
+  `&& !d.mount_path`, matching the attach wizard: an already-mounted drive (e.g. `felhom-usb`) no
+  longer appears as an "initialize" candidate. Eject it first to make it an init target.
+- **Register shortcut (B3)** — a mounted, unregistered **user-data** drive now offers **Regisztrálás**
+  as its PRIMARY per-card action (Leválasztás/Törlés stay secondary). It records the existing mount
+  into the `StoragePath` registry (no format, no eject) via the new `POST /api/storage/register` →
+  `registerStoragePath`, then FileBrowser syncs. The natural "use this drive" intent, not "wipe it".
+- **System-storage clarity (B4)** — `local` and `local-lvm` are both kept (not collapsed); each
+  storage card now carries a plain-Hungarian **purpose description** keyed on the agent's role/type,
+  the app-backing storages (`local-lvm` → "Alkalmazás-rendszer"; user-data → "Alkalmazás-adatok") are
+  tagged, and a one-line tiering note above the list answers "which storage do the apps use?". Pure
+  controller-side presentation — no agent contract change; role/type stay authoritative from the agent.
+- **Eject impact (B5)** — the eject confirmation already lists, by name, the deployed apps that lose
+  their storage (via `/api/storage/impact`), at parity with the wipe warning — verified, no change.
+
 ### v0.44.0 — role-aware drive management: protected lockout + customer type-to-confirm wipe + drive-list restyle (2026-06-11)
 
 The controller half of the storage-authorization redesign. The drive UI is now driven by the agent's

controller/README.md

@@ -514,7 +514,8 @@ not just those with HDD data. Non-HDD apps can configure destination, method, an
 
 ### 4. Storage Management
 
-> **⚠️ Rebuilt on the agent-delegated disk model (v0.43.0), made ROLE-AWARE in v0.44.0.** After the 8C
+> **⚠️ Rebuilt on the agent-delegated disk model (v0.43.0), made ROLE-AWARE in v0.44.0, UX-polished in
+> v0.45.0.** After the 8C
 > de-privileging, the controller holds **no Proxmox/disk credentials and no destructive authority** — disk
 > execution + the gate live entirely in the **host agent**. The drive UI is driven by the agent's
 > authoritative **role** (`system` | `backup` | `user-data`, from `GET /api/disks`): the appliance's own
@@ -526,6 +527,17 @@ not just those with HDD data. Non-HDD apps can configure destination, method, an
 >   Biztonsági mentés — védett / Felhasználói adat) and registered state, plus a **capacity bar** (the
 >   monitoring `system-bar`, from the agent's `total_bytes`/`used_bytes`). Eject/Wipe render **only** for
 >   user-data drives mounted under `/mnt`.
+>   - **(v0.45.0) Deterministic order** — `agentDisksListHandler` sorts the list server-side
+>     (`sortDisksForView`): **user-data → system → backup** (then unrecognized), alpha by name within a
+>     tier, so it no longer reorders on each reload (the agent's view iterates an unordered Go map).
+>   - **(v0.45.0) Purpose + app-backing clarity (B4)** — `local` and `local-lvm` are both shown (not
+>     collapsed); each card carries a plain-Hungarian **purpose description** keyed on the agent's
+>     role/type, the app-backing storages are tagged (`local-lvm` → "Alkalmazás-rendszer"; user-data →
+>     "Alkalmazás-adatok"), and a one-line tiering note above the list answers "which storage do the
+>     apps use?". Pure presentation — role/type stay authoritative from the agent.
+>   - **(v0.45.0) Register shortcut (B3)** — a mounted, **unregistered** user-data drive offers
+>     **Regisztrálás** as its PRIMARY action: `POST /api/storage/register` → `registerStoragePath` records
+>     the existing mount (no format, no eject) + FileBrowser-syncs. Leválasztás/Törlés stay secondary.
 > - **Customer wipe/eject** — a **type-to-confirm** modal that names the deployed apps that break
 >   (`GET /api/storage/impact` → `appsUsingPath`) and disables the destructive button until the **mount
 >   name is typed exactly**. Wipe (`POST /api/storage/wipe`): eject (unmount + deregister) → server-side
@@ -538,7 +550,10 @@ not just those with HDD data. Non-HDD apps can configure destination, method, an
 >   only if a protected device somehow reaches init.
 > - **Guided attach** (`/settings/storage/attach`, `POST /api/storage/attach`): non-destructive — resolve
 >   the existing fs UUID → `assign` → register. Selector restyled to cards (user-data only).
-> - **Eject** (`POST /api/storage/eject`): benign unmount + deregister, with the agent's dependent-guest warning.
+> - **Eject** (`POST /api/storage/eject`): benign unmount + deregister, with the agent's dependent-guest
+>   warning + the affected-app list (parity with wipe). **The eject is ROLE-GATED at the agent** (felhom-
+>   agent v0.24.0): `POST /disks/eject` refuses to unmount a system/backup mount — the UI hiding the button
+>   is defense-in-depth, not the control. Only user-data mounts are ejectable.
 > - **`agentapi`** (`internal/agentapi`) is the pinned client to the agent local API: `Disks`/`AssignDisk`/
 >   `EjectDisk`/`FormatDisk(…, confirmed, durableID)`; `DiskInfo.role`+capacity;
 >   `FormatResult.{role,needs_confirmation,durable_id}`; `ErrNeedsConfirmation` (user-data) vs

controller/internal/web/agent_disk_handlers.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"net/http"
+	"sort"
 
 	"gitea.dooplex.hu/admin/felhom-controller/internal/agentapi"
 )
@@ -73,9 +74,39 @@ func (s *Server) agentDisksListHandler(w http.ResponseWriter, r *http.Request) {
 		writeDiskJSON(w, http.StatusBadGateway, false, err.Error(), nil)
 		return
 	}
+	// Deterministic order: the agent's storage view iterates a Go map (unordered), so the list would
+	// otherwise reorder on every reload (CLAUDE.md lesson #3). The customer's manageable drives go on
+	// top, in a stable order: user-data first, then system, then backup, alpha by name within a tier.
+	sortDisksForView(resp.Disks)
 	writeDiskJSON(w, http.StatusOK, true, "", resp)
 }
 
+// sortDisksForView orders the agent's disk list deterministically (user-data → system → backup →
+// unrecognized; alphabetical by storage name within each tier). A stable Go-side contract beats
+// relying on map iteration order or template JS alone.
+func sortDisksForView(disks []agentapi.DiskInfo) {
+	sort.SliceStable(disks, func(i, j int) bool {
+		if ri, rj := diskRoleRank(disks[i].Role), diskRoleRank(disks[j].Role); ri != rj {
+			return ri < rj
+		}
+		return disks[i].Name < disks[j].Name
+	})
+}
+
+// diskRoleRank ranks a role for the overview ordering (lower sorts first).
+func diskRoleRank(role string) int {
+	switch role {
+	case "user-data":
+		return 0
+	case "system":
+		return 1
+	case "backup":
+		return 2
+	default:
+		return 3
+	}
+}
+
 // agentDiskAssignHandler proxies POST /api/disks/assign → agent POST /disks/assign.
 func (s *Server) agentDiskAssignHandler(w http.ResponseWriter, r *http.Request) {
 	var req struct {

controller/internal/web/storage_handlers.go

@@ -185,6 +185,8 @@ func (s *Server) ServeStorageAPI(w http.ResponseWriter, r *http.Request) {
 		s.handleStorageWipe(w, r)
 	case r.URL.Path == "/api/storage/impact" && r.Method == http.MethodGet:
 		s.handleStorageImpact(w, r)
+	case r.URL.Path == "/api/storage/register" && r.Method == http.MethodPost:
+		s.handleStorageRegister(w, r)
 	default:
 		http.NotFound(w, r)
 	}
@@ -325,6 +327,35 @@ func (s *Server) handleStorageWipe(w http.ResponseWriter, r *http.Request) {
 	writeDiskJSON(w, http.StatusOK, true, "", map[string]any{"device": req.Device, "wiped": fr.Formatted, "durable_id": fr.DurableID})
 }
 
+// handleStorageRegister records an ALREADY-mounted, unregistered user-data drive into the StoragePath
+// registry — no format, no eject. It is the natural primary action for a mounted-but-unregistered data
+// drive (e.g. felhom-usb): the customer's intent is to USE the existing data, not wipe it. It reuses
+// registerStoragePath (the manual-add path) — AddStoragePath dedupes, so a double-register is a clean
+// error, not a duplicate.
+func (s *Server) handleStorageRegister(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Where      string `json:"where"`
+		Label      string `json:"label"`
+		SetDefault bool   `json:"set_default"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeDiskJSON(w, http.StatusBadRequest, false, "érvénytelen kérés", nil)
+		return
+	}
+	req.Where = path.Clean(strings.TrimSpace(req.Where))
+	if req.Where == "" || req.Where == "." || !strings.HasPrefix(req.Where, "/mnt/") {
+		writeDiskJSON(w, http.StatusBadRequest, false, "érvénytelen csatlakoztatási pont", nil)
+		return
+	}
+	if err := s.registerStoragePath(req.Where, req.Label, req.SetDefault); err != nil {
+		s.logger.Printf("[WARN] [web] storage register %s failed: %v", req.Where, err)
+		writeDiskJSON(w, http.StatusBadGateway, false, err.Error(), nil)
+		return
+	}
+	s.logger.Printf("[INFO] [web] storage path registered (existing mount): %s", req.Where)
+	writeDiskJSON(w, http.StatusOK, true, "", map[string]any{"registered": true, "where": req.Where})
+}
+
 func (s *Server) handleStorageAttach(w http.ResponseWriter, r *http.Request) {
 	var req storageProvReq
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {

controller/internal/web/storage_handlers_test.go

@@ -237,6 +237,34 @@ func TestAppsUsingPathIn(t *testing.T) {
 	}
 }
 
+// B1: the disk overview must render in a deterministic order — user-data first, then system, then
+// backup (then anything unrecognized), alphabetical by name within each tier — so the list does not
+// reorder on each reload (the agent's storage view iterates an unordered Go map).
+func TestSortDisksForView(t *testing.T) {
+	disks := []agentapi.DiskInfo{
+		{Name: "felhom-pbs", Role: "backup"},
+		{Name: "local-lvm", Role: "system"},
+		{Name: "zdata", Role: "user-data"},
+		{Name: "local", Role: "system"},
+		{Name: "adata", Role: "user-data"},
+		{Name: "mystery", Role: ""},
+	}
+	sortDisksForView(disks)
+	var got []string
+	for _, d := range disks {
+		got = append(got, d.Name)
+	}
+	want := []string{"adata", "zdata", "local", "local-lvm", "felhom-pbs", "mystery"}
+	if len(got) != len(want) {
+		t.Fatalf("length mismatch: got %v want %v", got, want)
+	}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Fatalf("order at %d: got %q want %q (full: %v)", i, got[i], want[i], got)
+		}
+	}
+}
+
 func TestMountWhere(t *testing.T) {
 	if w, err := mountWhere("hdd_1"); err != nil || w != "/mnt/hdd_1" {
 		t.Errorf("mountWhere(hdd_1) = %q, %v", w, err)

controller/internal/web/templates/settings.html

@@ -380,6 +380,23 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
     if(!d.mount_path) return '';
     return registered[d.mount_path] ? '<span class="badge badge-ok">Regisztrálva</span>' : '<span class="badge badge-muted">Nem regisztrált</span>';
   }
+  // appBackingTag marks the storages that actually hold deployed apps: the internal SSD (app
+  // databases + Docker) and the external user-data drives (large app files). Keyed on the agent's
+  // authoritative role/type — pure presentation, no agent contract change.
+  function appBackingTag(d){
+    if(d.type==='lvmthin') return '<span class="badge badge-info">Alkalmazás-rendszer</span>';
+    if(d.role==='user-data') return '<span class="badge badge-info">Alkalmazás-adatok</span>';
+    return '';
+  }
+  // purposeDesc explains, in plain Hungarian, what each storage is for — so the "which one do the
+  // apps use?" question is answered per-card. Keyed on type first, then role.
+  function purposeDesc(d){
+    if(d.type==='lvmthin') return 'Belső SSD — a szerver rendszere, a Docker és a telepített alkalmazások adatbázisai itt találhatók.';
+    if(d.type==='local'||d.type==='dir') return 'Host tárhely — rendszer-sablonok, ISO-k, host szintű mentések. Nem tárol alkalmazásadatot.';
+    if(d.type==='pbs'||d.role==='backup') return 'A biztonsági mentések tárhelye.';
+    if(d.role==='user-data') return 'Külső adattároló — a telepített alkalmazások nagy méretű fájljai (média, dokumentumok) ide kerülnek.';
+    return '';
+  }
   function capBar(d){
     if(!d.total_bytes || d.total_bytes<=0) return '';
     var pct = d.used_fraction ? d.used_fraction*100 : (d.used_bytes/d.total_bytes*100);
@@ -387,11 +404,17 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
     return '<div class="drive-cap"><div class="system-bar"><div class="system-bar-fill '+usageColorClass(pct)+'" style="width:'+pct.toFixed(1)+'%"></div></div>'
       +'<div class="drive-cap-label">'+hum(d.used_bytes)+' / '+hum(d.total_bytes)+' ('+pct.toFixed(0)+'%)</div></div>';
   }
-  function actions(d){
+  function actions(d, registered){
     // Destructive controls ONLY for user-data drives that are mounted under /mnt. System/backup get none.
     if(d.role!=='user-data' || !d.mount_path || d.mount_path.indexOf('/mnt/')!==0) return '';
     var dev = esc(d.backing_device||''), mp = esc(d.mount_path);
-    var btns = '<button class="btn btn-xs btn-danger-outline" onclick="confirmEject(\''+mp+'\')">Leválasztás</button>';
+    var btns = '';
+    // A mounted-but-unregistered user-data drive: the natural intent is to USE it → Regisztrálás is
+    // the PRIMARY action (no format, no eject). Leválasztás/Törlés stay available but secondary.
+    if(!registered[d.mount_path]){
+      btns += '<button class="btn btn-xs btn-primary" onclick="registerDrive(\''+mp+'\')">Regisztrálás</button> ';
+    }
+    btns += '<button class="btn btn-xs btn-danger-outline" onclick="confirmEject(\''+mp+'\')">Leválasztás</button>';
     if(d.backing_device){ btns += ' <button class="btn btn-xs btn-danger-outline" onclick="confirmWipe(\''+dev+'\',\''+mp+'\')">Törlés…</button>'; }
     return '<div class="drive-actions">'+btns+'</div>';
   }
@@ -403,15 +426,19 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
       var disks=(j.data&&j.data.disks)||[];
       if(disks.length===0){ box.innerHTML='<p class="form-hint">Nincs észlelt meghajtó.</p>'; return; }
       var registered={}; (window.__registeredPaths||[]).forEach(function(p){registered[p]=true;});
-      var html='<div class="drive-list">';
+      // One-line tiering explanation so "which storage do the apps use?" is answered at a glance.
+      var html='<p class="drive-tiering-note">Az alkalmazások rendszere és adatbázisai a belső SSD-n (local-lvm), a nagy méretű fájljaik a külső adattárolókon tárolódnak.</p>';
+      html+='<div class="drive-list">';
       disks.forEach(function(d){
         var sub = esc(d.type)+' · '+esc(d.backing_device||'—')+(d.mount_path?' · '+esc(d.mount_path):'');
-        var badges = roleBadge(d.role)+classBadge(d)+dataBadge(d)+regBadge(d,registered);
+        var badges = roleBadge(d.role)+appBackingTag(d)+classBadge(d)+dataBadge(d)+regBadge(d,registered);
+        var purpose = purposeDesc(d);
         html+='<div class="drive-card role-'+esc(d.role||'system')+'">'
           +'<div class="drive-card-top"><div class="drive-id"><span class="drive-name">'+esc(d.name)+'</span><span class="drive-sub">'+sub+'</span></div>'
           +'<div class="drive-badges">'+badges+'</div></div>'
+          +(purpose?'<div class="drive-purpose">'+esc(purpose)+'</div>':'')
           +capBar(d)
-          +actions(d)
+          +actions(d,registered)
           +'</div>';
       });
       html+='</div>';
@@ -445,6 +472,15 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
     document.getElementById('confirm-go').onclick=opts.onConfirm;
   }
 
+  // registerDrive records an already-mounted, unregistered user-data drive into the StoragePath
+  // registry (no format, no eject) — makes the existing mount usable (schedulable + FileBrowser sync).
+  window.registerDrive=async function(where){
+    try{
+      var r=await fetch('/api/storage/register',{method:'POST',headers:Object.assign({'Content-Type':'application/json'},csrfHeaders()),body:JSON.stringify({where:where})});
+      var j=await r.json(); if(!j.ok){ alert('Regisztráció sikertelen: '+(j.error||'')); return; }
+      location.reload();
+    }catch(e){ alert('Hiba: '+e.message); }
+  };
   window.confirmEject=function(where){
     var name=where.replace(/^\/mnt\//,'');
     openConfirm({title:'Meghajtó leválasztása', mount:where, mountName:name,

controller/internal/web/templates/storage_init.html

@@ -80,9 +80,11 @@ async function loadDisks(){
     var r = await fetch('/api/disks'); 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 are valid init (format) targets.
-    var formattable = disks.filter(function(d){ return d.backing_device!=="" && d.role==='user-data'; });
-    if(formattable.length===0){ document.getElementById('disk-list').innerHTML='<p class="form-hint">Nincs formázható felhasználói adatmeghajtó. (A rendszer- és biztonsági-mentés meghajtók védettek.)</p>'; return; }
+    // 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 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):'');

controller/internal/web/templates/style.css

@@ -3124,6 +3124,14 @@ a.stat-card:hover {
 .badge-ok { background: rgba(35, 134, 54, 0.18); color: #3fb950; }
 .badge-lock { background: rgba(210, 153, 34, 0.18); color: var(--yellow); }
 .badge-muted { background: rgba(110, 118, 129, 0.18); color: var(--text-muted); }
+.badge-info { background: rgba(0, 136, 204, 0.18); color: var(--accent-light); }
+/* Per-card storage purpose description + the tiering one-liner above the drive list. */
+.drive-purpose { font-size: .8rem; color: var(--text-secondary); line-height: 1.4; }
+.drive-tiering-note {
+    font-size: .8rem; color: var(--text-secondary); line-height: 1.4;
+    margin: 0 0 .75rem; padding: .5rem .75rem;
+    background: rgba(0, 136, 204, 0.06); border-left: 3px solid var(--accent-blue); border-radius: 6px;
+}
 .badge .lock-ico { margin-right: .25rem; }
 span.mono, .mono { font-family: 'JetBrains Mono', monospace; }