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/location.go

@@ -0,0 +1,40 @@
+package ssdp
+
+import (
+	"fmt"
+	"net"
+)
+
+// LocationProvider provides address for Location header which can be reached from
+// "from" address network.
+type LocationProvider interface {
+	// Location provides an address be reachable from the network located
+	// by "from" address or "ifi" interface.
+	// One of "from" or "ifi" must not be nil.
+	Location(from net.Addr, ifi *net.Interface) string
+}
+
+// LocationProviderFunc type is an adapter to allow the use of ordinary
+// functions are location providers.
+type LocationProviderFunc func(net.Addr, *net.Interface) string
+
+func (f LocationProviderFunc) Location(from net.Addr, ifi *net.Interface) string {
+	return f(from, ifi)
+}
+
+type fixedLocation string
+
+func (s fixedLocation) Location(net.Addr, *net.Interface) string {
+	return string(s)
+}
+
+func toLocationProvider(v interface{}) (LocationProvider, error) {
+	switch w := v.(type) {
+	case string:
+		return fixedLocation(w), nil
+	case LocationProvider:
+		return w, nil
+	default:
+		return nil, fmt.Errorf("location should be a string or a ssdp.LocationProvider but got %T", w)
+	}
+}