feat: Telegram fleet alerts, forge sigil scramble, UI polish, agent ops

- Calibrate: per-event Telegram/SMTP toggles, test notification, chat ID help
- Notify on agent connect/reconnect, offline/hashrate/rejection, forge complete
- Sigil scramble post-forge uniquification and Dispense Reveal ceremony
- Full system check, desktop push, BITS/host-binary persistence, Path Tracer
- Dashboard/Crucible visual polish, haptics, sacred geometry, mobile nav
- README documents alerts, sigil scramble, and pack-usb workflow
- USB bundle repacked via pack-usb.bat (AetherForge.exe + synced agent source)

server/web/src/components/SessionGate.tsx

@@ -1,7 +1,10 @@
 import { useEffect, useState, type ReactNode } from 'react';
 import { getStoredAuth, setStoredAuth } from '../api/auth';
+import { useSound } from '../context/SoundContext';
+import { FlowerOfLifeWatermark, KnowledgeKey } from './Visual/sacredGeometry/motifs';
 
 export default function SessionGate({ children }: { children: ReactNode }) {
+  const { play } = useSound();
   const [ready, setReady] = useState(false);
   const [authed, setAuthed] = useState(!!getStoredAuth());
   const [user, setUser] = useState('');
@@ -34,10 +37,12 @@ export default function SessionGate({ children }: { children: ReactNode }) {
       const res = await fetch('/api/v1/config', { headers: { Authorization: `Basic ${token}` } });
       if (!res.ok) {
         setErr('Login failed — check username and password.');
+        play('error');
         return;
       }
       setStoredAuth(user, pass);
       setAuthed(true);
+      play('success');
     } catch {
       setErr('Cannot reach server — check that miner-server is running.');
     }
@@ -46,6 +51,9 @@ export default function SessionGate({ children }: { children: ReactNode }) {
   if (!ready) {
     return (
       <div className="session-gate">
+        <div className="session-gate-sacred-ring" aria-hidden>
+          <FlowerOfLifeWatermark opacity={0.5} />
+        </div>
         <p className="font-tech">Starting AetherForge…</p>
       </div>
     );
@@ -54,6 +62,17 @@ export default function SessionGate({ children }: { children: ReactNode }) {
   if (!authed) {
     return (
       <div className="session-gate">
+        <div className="session-gate-sacred-ring" aria-hidden>
+          <FlowerOfLifeWatermark opacity={0.5} />
+        </div>
+        <div className="session-gate-keys" aria-hidden>
+          <div className="session-gate-key session-gate-key--tl">
+            <KnowledgeKey opacity={0.55} />
+          </div>
+          <div className="session-gate-key session-gate-key--br">
+            <KnowledgeKey opacity={0.45} />
+          </div>
+        </div>
         <form className="session-gate-card card" onSubmit={handleLogin}>
           <h1 className="font-display">AetherForge</h1>
           <p className="form-hint">Sign in to open the command deck.</p>
@@ -72,6 +91,9 @@ export default function SessionGate({ children }: { children: ReactNode }) {
           <button type="submit" className="btn btn-primary btn-lg">
             Enter Command Deck
           </button>
+          <p className="session-gate-whisper" aria-hidden>
+            ψ · the deck remembers every key
+          </p>
         </form>
       </div>
     );