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.

server/web/src/pages/EmberwakePage.css

@@ -0,0 +1,51 @@
+.emberwake-page .spread-section {
+  margin-bottom: 1.5rem;
+  padding: 1rem 1.25rem;
+  border-radius: 8px;
+  border: 1px solid #2a3040;
+  background: linear-gradient(135deg, #12161f 0%, #0d1018 100%);
+}
+
+.emberwake-page .spread-section h3 {
+  margin: 0 0 0.5rem;
+  font-size: 1rem;
+}
+
+.emberwake-page .spread-section--cyan { border-left: 4px solid #3dd6c6; }
+.emberwake-page .spread-section--ember { border-left: 4px solid #ff6b2c; }
+.emberwake-page .spread-section--gold { border-left: 4px solid #c9a227; }
+.emberwake-page .spread-section--violet { border-left: 4px solid #a78bfa; }
+
+.emberwake-tool-grid {
+  display: grid;
+  gap: 0.75rem;
+  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+}
+
+.emberwake-notes {
+  min-height: 120px;
+  width: 100%;
+  font-family: ui-monospace, monospace;
+  font-size: 0.85rem;
+}
+
+.emberwake-campaign-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+}
+
+.emberwake-campaign-list li {
+  display: flex;
+  justify-content: space-between;
+  padding: 0.35rem 0;
+  border-bottom: 1px solid #222a38;
+  font-size: 0.85rem;
+}
+
+.emberwake-ab-row {
+  display: flex;
+  gap: 0.5rem;
+  flex-wrap: wrap;
+  align-items: center;
+}