feat(dashboard): real user in sidebar + sign-out; strip demo/mock hints

- Sidebar footer now shows the ACE identity (was static 'James Carter') with a
  Sign-out menu; topbar user gets a Sign-out dropdown too. Both call useAuth().logout.
- Remove all visible 'Demo:' hints from login + register and the 'Demo mode' subtitle.

src/components/portal/login-flow.tsx

@@ -151,7 +151,6 @@ export function LoginFlow() {
           <Spinner lg />
           <div>
             <h1 style={{ fontSize: 20 }}>{provider ? `Connecting to ${cap(provider)}…` : "Looking up your account…"}</h1>
-            {provider && <p className="sub" style={{ marginTop: 6 }}>Demo mode — no provider keys configured.</p>}
           </div>
         </div>
       )}
@@ -302,7 +301,6 @@ function Identify({ email, setEmail, onSocial, onEmail, onPhone, toRegister }: {
         <span><Icon name="shield" size={13} /> Licensed &amp; Insured</span>
         <span><Icon name="check" size={13} /> Drone-Powered</span>
       </div>
-      <p className="demo-hint">Demo: any email signs in; an email starting with “new” shows “not found”.</p>
     </div>
   );
 }
@@ -337,7 +335,6 @@ function Passkey({ account, onBack, onPassword, onAnother, onSuccess, onFail }:
         <button className="link" onClick={onPassword}>Use your password instead</button>
         <button className="link" onClick={onAnother}>Try another way</button>
       </div>
-      <p className="demo-hint">Demo: passkey always succeeds here.</p>
       <button hidden onClick={onFail} />
     </div>
   );
@@ -390,7 +387,6 @@ function Password({ account, email, login, onAuthenticated, flash, onBack, onFor
         <button className="link" onClick={onForgot}>Forgot password?</button>
         <button className="link" onClick={onOtp}>Sign in with a one-time code</button>
       </div>
-      {!isShellConfigured() && <p className="demo-hint">Demo: any password works; type “wrong” to see the lockout. Password always needs 2-step next.</p>}
     </div>
   );
 }
@@ -471,7 +467,6 @@ function OtpVerify({ account, email, initialChannel = "email", remember, setReme
         <span />
       </div>
       <RememberDevice checked={remember} onChange={setRemember} note="2-step is still required at each sign-in." />
-      {!shell && <p className="demo-hint">Demo: any 6 digits verify; “000000” shows an error.</p>}
     </div>
   );
 }
@@ -526,7 +521,6 @@ function Totp({ remember, setRemember, onBack, onVerified }: { remember: boolean
         {setupKey ? "Enter a 6-digit code instead" : "Enter setup key instead"}
       </button>
       <RememberDevice checked={remember} onChange={setRemember} />
-      <p className="demo-hint">Demo: any 6 digits verify; “000000” fails.</p>
     </div>
   );
 }
@@ -545,7 +539,6 @@ function PushApprove({ onBack, onApproved, onCancel }: { onBack: () => void; onA
       <p className="sub" style={{ textAlign: "center" }}>{approved ? "Your sign-in was approved." : "We sent a notification to your mobile app. Approve it to continue."}</p>
       <div className="interstitial">{approved ? <Icon name="check" size={30} /> : <Spinner lg />}</div>
       {!approved && <button className="btn" onClick={onCancel}>Cancel</button>}
-      <p className="demo-hint">Demo: auto-approves after ~3 seconds.</p>
     </div>
   );
 }
@@ -629,7 +622,6 @@ function ForgotCode({ onBack, onOk }: { onBack: () => void; onOk: () => void })
       <div style={{ marginTop: 18 }}><OtpBoxes onComplete={(c) => (c === "000000" ? setError(true) : onOk())} error={error} /></div>
       {error && <div style={{ marginTop: 12 }}><FlashNote tone="error">Incorrect code.</FlashNote></div>}
       <div style={{ marginTop: 14 }}><ResendLink seconds={30} /></div>
-      <p className="demo-hint">Demo: any 6 digits work; “000000” fails.</p>
     </div>
   );
 }