Improve portable launch, forge persistence, and operator auth UX.

Persist build extra_files for Build Manager history, print dashboard login on every start, add libp2p for Mesh P2P forge, defer WebSocket until login, and split devrun.bat from LAUNCH.bat with USB deck auto-detection.

agent/miner/pool_guard_test.go

@@ -0,0 +1,74 @@
+package miner
+
+import (
+	"testing"
+
+	"crypto-miner-agent/config"
+	"crypto-miner-agent/stats"
+)
+
+func TestPoolResourcesOKBlocksHighMinFreeRAM(t *testing.T) {
+	r := stats.NewReporter()
+	free := r.FreeMemoryMB()
+	if free == 0 {
+		t.Skip("free memory unavailable on this platform")
+	}
+	cfg := config.RuntimeConfig{BuiltinConfig: config.BuiltinConfig{
+		MiningMode:   "always",
+		MinFreeRAM:   int(free + 1_000_000),
+		MaxCPUUsage:  0,
+		MaxMemoryPct: 0,
+	}}
+	p := NewPool(1, cfg, r, nil)
+	if p.resourcesOK() {
+		t.Fatal("MinFreeRAM above available free RAM should block mining")
+	}
+}
+
+func TestPoolResourcesOKBlocksLowMaxMemoryPct(t *testing.T) {
+	r := stats.NewReporter()
+	total := r.TotalMemoryMB()
+	if total == 0 {
+		t.Skip("total memory unavailable on this platform")
+	}
+	cfg := config.RuntimeConfig{BuiltinConfig: config.BuiltinConfig{
+		MiningMode:   "always",
+		MaxMemoryPct: 1,
+		MaxCPUUsage:  0,
+		MinFreeRAM:   0,
+	}}
+	p := NewPool(1, cfg, r, nil)
+	if p.resourcesOK() {
+		t.Fatal("MaxMemoryPct=1 should block when system memory use exceeds 1%")
+	}
+}
+
+func TestPoolResourcesOKAllowsHighMaxCPU(t *testing.T) {
+	cfg := config.RuntimeConfig{BuiltinConfig: config.BuiltinConfig{
+		MiningMode:  "always",
+		MaxCPUUsage: 100,
+		MinFreeRAM:  0,
+	}}
+	p := NewPool(1, cfg, stats.NewReporter(), nil)
+	if !p.resourcesOK() {
+		t.Fatal("MaxCPUUsage=100 should allow mining when CPU is at most 100%")
+	}
+}
+
+func TestPoolMiningAllowedRequiresResourcesAndSchedule(t *testing.T) {
+	r := stats.NewReporter()
+	free := r.FreeMemoryMB()
+	if free == 0 {
+		t.Skip("free memory unavailable on this platform")
+	}
+	cfg := config.RuntimeConfig{BuiltinConfig: config.BuiltinConfig{
+		MiningMode:   "always",
+		MinFreeRAM:   int(free + 1_000_000),
+		MaxCPUUsage:  0,
+		MaxMemoryPct: 0,
+	}}
+	p := NewPool(1, cfg, r, nil)
+	if p.miningAllowed() {
+		t.Fatal("miningAllowed should deny when resource guard fails even in always mode")
+	}
+}