Add fleet ops dashboard, Calibrate enforcement, and dead-code cleanup.

Ship live alerts, pool status, AI monitor, remote agent commands, build manager, and uninstall flow; wire Calibrate settings (WS ping, pool traffic log, retention limits) at runtime and exclude server/data from git.

.gitignore

@@ -10,9 +10,11 @@
 /data/builds/
 /data/logs/
 /data/config.json
+/server/data/
 
 # Go
 /server/miner-server.exe
+/server/miner-server.exe~
 
 # Frontend
 /server/web/node_modules/