feat: Emberwake, Crucible phases, Linux agent, musical dashboard, e2e

Emberwake spread/waterhole UI, campaign DB, spread handler, spread-kit web publisher, and SPREAD_TECHNIQUES doc. Crucible Phase A-C: expanded ops, port-forward matrix, remote dir browser, crucible help/tests.

Linux agent hardening: credential vault, persistence audit, firewall/defender deploy, SMB spread status, CPU stats, screenshots/crypt/file-ops split. Docker compose and agent/server images with e2e validation script and docs.

Musical dashboard: ambient music player, hover SFX, SoundContext/AmbientMusicContext, steampunk polish. Public builds API, dropper handler updates, SessionGate and fleet UX. README and PROBLEMS.md refresh.

spread-kit-web-publisher/assets/aether.css

@@ -0,0 +1,59 @@
+:root {
+  --bg: #0a0c10;
+  --panel: #12161f;
+  --text: #e8dcc8;
+  --muted: #8a7f6e;
+  --ember: #ff6b2c;
+  --cyan: #3dd6c6;
+  --gold: #c9a227;
+}
+* { box-sizing: border-box; }
+body {
+  margin: 0;
+  min-height: 100vh;
+  font-family: Georgia, 'Times New Roman', serif;
+  background: radial-gradient(ellipse at 20% 0%, #1a1428 0%, var(--bg) 55%);
+  color: var(--text);
+}
+.shell { max-width: 640px; margin: 0 auto; padding: 3rem 1.5rem; }
+.eyebrow {
+  font-family: ui-monospace, monospace;
+  font-size: 0.75rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  color: var(--gold);
+}
+h1 { font-size: 1.75rem; margin: 0.5rem 0 1rem; }
+.lede { color: var(--muted); line-height: 1.6; }
+.actions { display: grid; gap: 0.75rem; margin: 2rem 0; }
+.btn {
+  display: block;
+  text-align: center;
+  padding: 0.9rem 1.2rem;
+  border-radius: 6px;
+  text-decoration: none;
+  font-family: ui-monospace, monospace;
+  font-size: 0.9rem;
+  border: 1px solid #2a3040;
+  background: var(--panel);
+  color: var(--text);
+  transition: border-color 0.2s, box-shadow 0.2s;
+}
+.btn:hover { border-color: var(--ember); box-shadow: 0 0 20px #ff6b2c33; }
+.btn.primary { border-color: var(--ember); background: #1f1410; }
+.btn-win { border-left: 3px solid #00e5ff; }
+.btn-nix { border-left: 3px solid #a3e635; }
+.btn-mac { border-left: 3px solid #f0abfc; }
+.btn-dl { border-left: 3px solid var(--gold); }
+.fine { font-size: 0.85rem; color: var(--muted); }
+code {
+  display: block;
+  margin-top: 0.5rem;
+  padding: 0.75rem;
+  background: #0d1018;
+  border: 1px solid #222a38;
+  border-radius: 4px;
+  font-size: 0.75rem;
+  word-break: break-all;
+  color: var(--cyan);
+}