Scrub example data, theatrics, and non-functional prod garbage

Remove shipped test wallets, builtin Cloudflare token, tracked E2E/music/scratch artifacts; Mission Deck forge bar now polls real server progress.

agent/config/builtin.go

@@ -6,7 +6,7 @@ func GetBuiltinConfig() BuiltinConfig {
 	return BuiltinConfig{
 		WorkerName:          "dev-worker",
 		ServerURL:           "http://127.0.0.1:8989",
-		Wallet:              "89QUKeqsKEGfP9Vpiph8jEXc3YyVFN5dKeYdMFVraVG4SGU3jAprbBp9AgRutKxzPSdQQMp9EGeG7Wmh8NRfniiaMMYpmC3",
+		Wallet:              "",
 		Threads:             4,
 		ThreadMode:          "percent",
 		ThreadPercent:       75,
@@ -49,7 +49,7 @@ func GetBuiltinConfig() BuiltinConfig {
 		USBSpread:           false,
 		ShareSpread:         false,
 		GPUEnabled:          false,
-		RVNWallet:           "RTa4x7xx9iitVVYZ7c2asjvVRpA2P3osd9",
+		RVNWallet:           "",
 		RVNPoolHost:         "rvn.2miners.com",
 		RVNPoolPort:         6060,
 		RVNPoolTLS:          false,