Integrate BACKBEAT SDK and resolve KACHING license validation

Major integrations and fixes:
- Added BACKBEAT SDK integration for P2P operation timing
- Implemented beat-aware status tracking for distributed operations
- Added Docker secrets support for secure license management
- Resolved KACHING license validation via HTTPS/TLS
- Updated docker-compose configuration for clean stack deployment
- Disabled rollback policies to prevent deployment failures
- Added license credential storage (CHORUS-DEV-MULTI-001)

Technical improvements:
- BACKBEAT P2P operation tracking with phase management
- Enhanced configuration system with file-based secrets
- Improved error handling for license validation
- Clean separation of KACHING and CHORUS deployment stacks

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vendor/github.com/koron/go-ssdp/ssdp.go

@@ -0,0 +1,37 @@
+package ssdp
+
+import (
+	"log"
+	"net"
+
+	"github.com/koron/go-ssdp/internal/multicast"
+	"github.com/koron/go-ssdp/internal/ssdplog"
+)
+
+func init() {
+	multicast.InterfacesProvider = func() []net.Interface {
+		return Interfaces
+	}
+	ssdplog.LoggerProvider = func() *log.Logger {
+		return Logger
+	}
+}
+
+// Interfaces specify target interfaces to multicast.  If no interfaces are
+// specified, all interfaces will be used.
+var Interfaces []net.Interface
+
+// Logger is default logger for SSDP module.
+var Logger *log.Logger
+
+// SetMulticastRecvAddrIPv4 updates multicast address where to receive packets.
+// This never fail now.
+func SetMulticastRecvAddrIPv4(addr string) error {
+	return multicast.SetRecvAddrIPv4(addr)
+}
+
+// SetMulticastSendAddrIPv4 updates a UDP address to send multicast packets.
+// This never fail now.
+func SetMulticastSendAddrIPv4(addr string) error {
+	return multicast.SetSendAddrIPv4(addr)
+}