v0.13.1: UI polish fixes round 2 (4 fixes)

- Fix 1: deploy-cross-drive card uses correct CSS vars (--bg-secondary, --border-color)
- Fix 2: Auto-generated env values — badge inline with label, remove copy buttons, muted readonly inputs
- Fix 3: Snapshot table shows 0 instead of n/a; remove unused .col-na CSS
- Fix 4: Disk warnings moved inline under storage bars (Inline alert field, GetInlineAlerts, inline-warning CSS)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

controller/internal/web/alerts.go

@@ -19,6 +19,7 @@ type Alert struct {
 	Link     string   // optional link to relevant page
 	LinkText string   // link display text
 	PageOnly []string // if non-empty, only show on these pages (e.g., ["dashboard", "monitoring"])
+	Inline   bool     // if true, rendered by page template inline, not in layout banner
 }
 
 // AlertManager generates and stores dashboard alerts from health check results.
@@ -62,10 +63,11 @@ func (am *AlertManager) Refresh(report *monitor.HealthReport, cfg *config.Config
 			Link:     "/monitoring",
 			LinkText: "Rendszermonitor",
 		}
-		// Disk-related warnings only relevant on dashboard and monitoring pages
+		// Disk-related warnings rendered inline under storage bars, not in top banner
 		if strings.Contains(w, "meghajtón") || strings.Contains(w, "adattároló") || strings.Contains(w, "meghajtó") {
 			alert.ID = "disk-not-separate"
 			alert.PageOnly = []string{"dashboard", "monitoring"}
+			alert.Inline = true
 		}
 		alerts = append(alerts, alert)
 	}
@@ -143,6 +145,30 @@ func (am *AlertManager) GetAlerts(excludeIDs ...string) []Alert {
 	return result
 }
 
+// GetInlineAlerts returns alerts marked as Inline for a specific page.
+func (am *AlertManager) GetInlineAlerts(page string) []Alert {
+	am.mu.RLock()
+	defer am.mu.RUnlock()
+
+	var result []Alert
+	for _, a := range am.alerts {
+		if !a.Inline {
+			continue
+		}
+		if len(a.PageOnly) == 0 {
+			result = append(result, a)
+			continue
+		}
+		for _, p := range a.PageOnly {
+			if p == page {
+				result = append(result, a)
+				break
+			}
+		}
+	}
+	return result
+}
+
 // countMissingPings counts how many ping UUIDs are not configured.
 func countMissingPings(cfg *config.Config) int {
 	count := 0