v0.128.1: suppress the class hint on USB drives (ruling F5)

Only Observe-sourced drives ever carried class, so legacy PVE dir:-backed USB
drives showed 'lassú' while registry-sourced ones never did. The card already
carries the USB type tag. Hub-report ClassHint UNCHANGED (UI-only). Pinned by
TestStorageTemplate_USBClassBadgeSuppressed (red-proof run).

controller/internal/web/storage_classtag_test.go

@@ -0,0 +1,36 @@
+package web
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+)
+
+// F5 (2026-07-13): USB drives never show the rotational class hint — the card already carries
+// the USB tag, and only Observe-sourced drives ever had class set, so USB cards flapped between
+// "lassú" and nothing depending on the data source. The guard is client-side (classTag runs on
+// /api/disks JSON), so the pin asserts the rendered page ships the guard FIRST in classTag.
+// Companion red-proof: remove the `d.type==='usb'` guard line → FAIL.
+func TestStorageTemplate_USBClassBadgeSuppressed(t *testing.T) {
+	s := testServer(t)
+	s.loadTemplates()
+	var buf bytes.Buffer
+	if err := s.tmpl.ExecuteTemplate(&buf, "storage", map[string]interface{}{
+		"Page": "storage", "Title": "Tárolók",
+	}); err != nil {
+		t.Fatalf("render storage: %v", err)
+	}
+	html := buf.String()
+
+	guard := strings.Index(html, `if(d.type==='usb') return '';`)
+	slow := strings.Index(html, `tag-off">lassú`)
+	if guard < 0 {
+		t.Fatal("classTag USB guard missing from the storage page")
+	}
+	if slow < 0 {
+		t.Fatal("classTag slow-branch missing — the guard has nothing to suppress (test needs updating)")
+	}
+	if guard > slow {
+		t.Fatalf("USB guard (at %d) must run BEFORE the class branches (at %d)", guard, slow)
+	}
+}

controller/internal/web/templates/storage.html

@@ -250,6 +250,10 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
   function usageColorClass(p){ if(p>=85) return 'crit'; if(p>=70) return 'warn'; return 'nominal'; }
   var LOCK_ICO='<svg class="ico ico-sm"><use href="#i-lock"/></svg>';
   function classTag(d){
+    // F5 2026-07-13: USB drives never show the class hint — the card already carries the USB
+    // tag, and Observe-sourced USB drives showing "lassú" while registry-sourced ones never do
+    // was a misleading inconsistency. Hub-report ClassHint is UNCHANGED (UI-only suppression).
+    if(d.type==='usb') return '';
     if(d.class==='fast') return '<span class="tag">gyors</span>';
     if(d.class==='slow') return '<span class="tag tag-off">lassú</span>';
     return '';