diff --git a/hub/src/index.ts b/hub/src/index.ts
index 3e07904..22d0517 100644
--- a/hub/src/index.ts
+++ b/hub/src/index.ts
@@ -135,8 +135,11 @@ app.use('/api/*', cors({
   credentials: true,
 }))
 
-// Health check
+// Health check. Both `/health` and `/healthz` are liveness aliases (the Coolify
+// probe + tooling hit `/healthz`); `/healthz/deep` (introspectApi below) is the
+// bearer-gated readiness endpoint, NOT a substitute for this cheap liveness ping.
 app.get('/health', (c) => c.json({ ok: true }))
+app.get('/healthz', (c) => c.json({ ok: true }))
 
 // B4 (obs): /healthz/deep + /metrics. Bearer-gated via HUB_INTROSPECT_TOKEN.
 // Mounted at root — bypasses /api/* auth, CSRF, license-gate, rate-limit
diff --git a/web/src/hooks/useProfile.ts b/web/src/hooks/useProfile.ts
index 976674f..5d7980d 100644
--- a/web/src/hooks/useProfile.ts
+++ b/web/src/hooks/useProfile.ts
@@ -20,6 +20,12 @@ export function useProfile(token: string | null) {
 
   const fetchProfile = useCallback(async () => {
     if (!token) { setLoading(false); return }
+    // Reset to loading on every (re)fetch — critically when `token` transitions
+    // null → set on sign-in. Without this the flag stays at the stale `false`
+    // left by the no-token branch, so App's dead-credential effect sees
+    // `!profileLoading && !profile && token` for one render and force-signs-out
+    // the user the instant they log in (auto-logout race).
+    setLoading(true)
     try {
       const p = await hubFetch<Profile>(token, '/api/profile')
       setProfile(p)
diff --git a/web/src/lib/auth.ts b/web/src/lib/auth.ts
index 5b1e2ad..3ecd7ff 100644
--- a/web/src/lib/auth.ts
+++ b/web/src/lib/auth.ts
@@ -27,12 +27,22 @@ export interface AuthUser {
  * regardless of outcome.
  */
 export async function requestMagicLink(email: string): Promise<void> {
-  await fetch(`${HUB_URL}/api/auth/login/request-link`, {
+  const res = await fetch(`${HUB_URL}/api/auth/login/request-link`, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
     body: JSON.stringify({ email }),
     credentials: 'include',
-  }).catch(() => {})
+  }).catch(() => null)
+  // Magic-link is globally disabled when the hub runs Titanium-bypassed
+  // (503 `{ error: "titanium_disabled" }`). That is a deployment-wide config
+  // state, NOT a per-email signal — surfacing it leaks no enumeration info, and
+  // silently rendering "check your inbox" would strand the user waiting for an
+  // email that will never send. Signal the caller to fall back to password
+  // sign-in. Every other outcome stays silent (enumeration safety).
+  if (res && res.status === 503) {
+    const body = (await res.json().catch(() => null)) as { error?: string } | null
+    if (body?.error === 'titanium_disabled') throw new Error('magic_link_disabled')
+  }
 }
 
 /**
diff --git a/web/src/pages/Login.tsx b/web/src/pages/Login.tsx
index feb6f0b..1ab85f2 100644
--- a/web/src/pages/Login.tsx
+++ b/web/src/pages/Login.tsx
@@ -30,9 +30,17 @@ export function Login({ onLegacyAuth }: Props) {
       await requestMagicLink(email)
       // Always show the success state regardless of API response — enumeration prevention.
       setSent(true)
-    } catch {
-      // Network-level failure — still show success (don't leak signal).
-      setSent(true)
+    } catch (err) {
+      // Magic-link globally disabled (Titanium bypass) — route to password
+      // sign-in instead of faking "check your inbox" for an email that the
+      // hub will never send. This is a config state, not a per-email signal.
+      if (err instanceof Error && err.message === 'magic_link_disabled') {
+        setMode('password')
+        setError('Magic-link sign-in is unavailable right now — please sign in with your password.')
+      } else {
+        // Network-level failure — still show success (don't leak signal).
+        setSent(true)
+      }
     } finally {
       setLoading(false)
     }