diff --git a/app/app.css b/app/app.css
index b264497..91732a1 100644
--- a/app/app.css
+++ b/app/app.css
@@ -156,3 +156,21 @@
   }
 }
 
+
+/* Accessibility: honour a reduced-motion request. Skyrise leans on ambient
+ * drift (the aurora field), spring transitions, and looping keyframes; for
+ * anyone who asks for less motion, near-instant everything and freeze the
+ * decorative loops. This is the global guard the app previously lacked. */
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+    scroll-behavior: auto !important;
+  }
+  [data-slot="aurora-field"] {
+    animation: none !important;
+  }
+}
diff --git a/app/components/copy-id.tsx b/app/components/copy-id.tsx
new file mode 100644
index 0000000..fde3c7d
--- /dev/null
+++ b/app/components/copy-id.tsx
@@ -0,0 +1,51 @@
+import { useState } from "react"
+import { Check, Copy } from "lucide-react"
+
+/**
+ * A monospace id (UUID, slug, token name) that copies to the clipboard on
+ * click, with a brief checkmark. Raw ids are common in an admin console and
+ * useless if you can't get them into a support ticket or a CLI.
+ */
+export function CopyId({
+  value,
+  label,
+  className = "",
+  dataAction,
+}: {
+  value: string
+  /** What's being copied, for the aria-label. Defaults to "id". */
+  label?: string
+  className?: string
+  dataAction?: string
+}) {
+  const [copied, setCopied] = useState(false)
+
+  const copy = async () => {
+    try {
+      await navigator.clipboard.writeText(value)
+      setCopied(true)
+      setTimeout(() => setCopied(false), 1200)
+    } catch {
+      // Clipboard blocked (insecure context / permissions) — no-op; the value
+      // is still selectable by hand.
+    }
+  }
+
+  return (
+    <button
+      type="button"
+      onClick={copy}
+      data-action={dataAction}
+      aria-label={`Copy ${label ?? "id"}`}
+      title="Copy"
+      className={`group inline-flex max-w-full items-center gap-1 rounded bg-muted px-1.5 py-0.5 font-mono text-xs transition-colors hover:bg-accent ${className}`}
+    >
+      <span className="truncate">{value}</span>
+      {copied ? (
+        <Check className="size-3 shrink-0 text-emerald-500" />
+      ) : (
+        <Copy className="size-3 shrink-0 text-muted-foreground opacity-0 transition-opacity group-hover:opacity-100" />
+      )}
+    </button>
+  )
+}
diff --git a/app/components/layout/app-shell.tsx b/app/components/layout/app-shell.tsx
index 228e0eb..09129cd 100644
--- a/app/components/layout/app-shell.tsx
+++ b/app/components/layout/app-shell.tsx
@@ -360,7 +360,7 @@ export function AppShell({
         data-slot="sidebar"
         data-expanded={expanded ? "true" : "false"}
         className={[
-          "sticky top-0 z-30 hidden h-svh shrink-0 flex-col border-r bg-sidebar transition-[width] duration-base ease-standard md:flex",
+          "sticky top-0 z-30 hidden h-svh shrink-0 flex-col border-r bg-sidebar transition-[width] duration-base ease-standard motion-reduce:transition-none md:flex",
           expanded ? "w-60" : "w-16",
         ].join(" ")}
       >
@@ -656,7 +656,10 @@ export function AppShell({
               one floating card in a sea of black. The floating actions
               pill is fixed to the viewport edge and lives outside this
               column, so it stays clear regardless of cap width. */}
-          <div className="mx-auto flex w-full max-w-[1180px] flex-1 flex-col gap-6 p-6 [&>*:first-child]:lg:pr-72">
+          {/* pt-16 on mobile reserves a row for the floating hamburger (left)
+              and actions pill (right) so they never overlap the page H1; the
+              desktop rail/pill sit outside this column, so pt drops to p-6. */}
+          <div className="mx-auto flex w-full max-w-[1180px] flex-1 flex-col gap-6 px-4 pb-6 pt-16 md:p-6 [&>*:first-child]:lg:pr-72">
             <RouteGuard>{children}</RouteGuard>
           </div>
         </div>
@@ -693,6 +696,9 @@ function NavRow({
       to={item.to}
       end={item.end}
       title={expanded ? undefined : item.label}
+      // When collapsed there's no visible label text, only an icon — give
+      // screen readers the name explicitly (title alone isn't reliably read).
+      aria-label={expanded ? undefined : item.label}
       onClick={onNavigate}
       data-action={`${prefix}${item.label.toLowerCase()}`}
       className={({ isActive }) =>
diff --git a/app/routes/home.tsx b/app/routes/home.tsx
index dce8b46..cde2153 100644
--- a/app/routes/home.tsx
+++ b/app/routes/home.tsx
@@ -11,7 +11,7 @@ import {
   Users as UsersIcon,
 } from "lucide-react"
 
-import { ArcadiaError, useArcadiaClient } from "@crema/arcadia-core-client"
+import { useArcadiaClient } from "@crema/arcadia-core-client"
 import { AlertBanner } from "@crema/feedback-ui"
 
 import { AppShell } from "~/components/layout/app-shell"
@@ -37,6 +37,7 @@ import { listTenants, type Tenant } from "~/lib/arcadia/tenants"
 import { listUsers, type User } from "~/lib/arcadia/users"
 import { useRegisterContext } from "@crema/aifirst-ui/context"
 import { pageTitle } from "~/lib/page-meta"
+import { errorMessage } from "~/lib/errors"
 import { useSession } from "~/lib/session"
 
 export const meta = () => pageTitle("Overview")
@@ -56,7 +57,7 @@ export default function HomeRoute() {
 
   const [data, setData] = useState<DashboardData>(EMPTY)
   const [loading, setLoading] = useState(true)
-  const [error, setError] = useState<string | null>(null)
+  const [error, setError] = useState<unknown>(null)
   const [refreshedAt, setRefreshedAt] = useState<Date | null>(null)
 
   const refresh = useCallback(async () => {
@@ -70,7 +71,7 @@ export default function HomeRoute() {
       listAuditLogs(arcadia, { limit: 10 }),
       getHealth(arcadia).catch(() => null),
     ]).catch((err) => {
-      setError(err instanceof ArcadiaError ? err.message : "Failed to load overview.")
+      setError(err)
       return [[], [], [], null] as [Tenant[], User[], AuditLog[], OverallHealth | null]
     })
     setData({ tenants, users, audit, health })
@@ -92,7 +93,7 @@ export default function HomeRoute() {
       tenants: { total: data.tenants.length, active: activeTenants },
       users: { total: data.users.length, active: activeUsers },
       audit: { recent: data.audit.length, errors: errorEvents },
-      health: data.health?.status ?? "unconfigured",
+      health: deriveOverallStatus(data.health),
     }
   }, [data])
 
@@ -129,7 +130,7 @@ export default function HomeRoute() {
 
       {error ? (
         <AlertBanner variant="error" dismissible onDismiss={() => setError(null)}>
-          {error}
+          {errorMessage(error, "load the overview")}
         </AlertBanner>
       ) : null}
 
@@ -408,6 +409,25 @@ function statusLabel(status: HealthStatus | string): string {
   return "Unknown"
 }
 
+/**
+ * The overall health hero must never say "Unknown" while its own Subsystems
+ * card reports everything Healthy. When the backend gives no meaningful overall
+ * status (unknown/unconfigured/missing), derive it from the subsystem probes
+ * the same card shows: any error → Down, any degraded → Degraded, otherwise
+ * Healthy if at least one subsystem reported ok.
+ */
+function deriveOverallStatus(health: OverallHealth | null): HealthStatus | string {
+  if (!health) return "unconfigured"
+  if (health.status === "ok" || health.status === "degraded" || health.status === "error") {
+    return health.status
+  }
+  const statuses = Object.values(health.subsystems ?? {}).map((s) => s?.status)
+  if (statuses.some((s) => s === "error")) return "error"
+  if (statuses.some((s) => s === "degraded")) return "degraded"
+  if (statuses.some((s) => s === "ok")) return "ok"
+  return health.status ?? "unconfigured"
+}
+
 function statusTone(status: HealthStatus | string): "default" | "ok" | "warning" | "error" {
   if (status === "ok") return "ok"
   if (status === "degraded") return "warning"
diff --git a/app/routes/monitoring.tsx b/app/routes/monitoring.tsx
index 6cf0557..1c70c25 100644
--- a/app/routes/monitoring.tsx
+++ b/app/routes/monitoring.tsx
@@ -334,7 +334,15 @@ export default function MonitoringRoute() {
             />
             <KpiTile
               label="Disk (busiest mount)"
-              value={busiestDiskLabel(data.host.disks)}
+              // The percentage alone is the metric — keep it in `value` so it
+              // never clips. The mount path (which can be long) goes in the
+              // caption, truncated with the full path on hover.
+              value={busiestDiskValue(data.host.disks)}
+              caption={
+                <span className="block truncate" title={busiestDiskMount(data.host.disks)}>
+                  {busiestDiskMount(data.host.disks)}
+                </span>
+              }
               icon={<Database className="size-4" />}
               tone={
                 busiestDiskPct(data.host.disks) > 90
@@ -691,10 +699,18 @@ function busiestDiskPct(disks: HostStats["disks"]): number {
   return disks.reduce((m, d) => Math.max(m, d.used_pct), 0)
 }
 
-function busiestDiskLabel(disks: HostStats["disks"]): string {
-  if (disks.length === 0) return "—"
-  const busiest = disks.reduce((a, b) => (b.used_pct > a.used_pct ? b : a))
-  return `${busiest.used_pct}% (${busiest.mount})`
+function busiestDisk(disks: HostStats["disks"]) {
+  if (disks.length === 0) return null
+  return disks.reduce((a, b) => (b.used_pct > a.used_pct ? b : a))
+}
+
+function busiestDiskValue(disks: HostStats["disks"]): string {
+  const d = busiestDisk(disks)
+  return d ? `${d.used_pct}%` : "—"
+}
+
+function busiestDiskMount(disks: HostStats["disks"]): string {
+  return busiestDisk(disks)?.mount ?? "no mounts"
 }
 
 function barColor(pct: number): string {
diff --git a/app/routes/profile.tsx b/app/routes/profile.tsx
index 0beca0d..82908ed 100644
--- a/app/routes/profile.tsx
+++ b/app/routes/profile.tsx
@@ -5,6 +5,7 @@ import { ArcadiaError, useArcadiaClient } from "@crema/arcadia-core-client"
 import { AlertBanner } from "@crema/feedback-ui"
 
 import { AppShell } from "~/components/layout/app-shell"
+import { CopyId } from "~/components/copy-id"
 import { Avatar, AvatarFallback, AvatarImage } from "~/components/ui/avatar"
 import { Badge } from "~/components/ui/badge"
 import { Button } from "~/components/ui/button"
@@ -357,9 +358,11 @@ export default function ProfileRoute() {
               </span>
               {account ? (
                 <>
-                  <span className="text-xs text-muted-foreground">
-                    Tenant <code className="font-mono">{account.tenant_id}</code> ·
-                    ID <code className="font-mono">{account.id}</code>
+                  <span className="flex flex-wrap items-center gap-1.5 text-xs text-muted-foreground">
+                    Tenant
+                    <CopyId value={account.tenant_id} label="tenant id" dataAction="profile-copy-tenant-id" />
+                    · ID
+                    <CopyId value={account.id} label="account id" dataAction="profile-copy-account-id" />
                   </span>
                   <span className="text-xs text-muted-foreground">
                     Last sign-in{" "}