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/README.md

@@ -0,0 +1,95 @@
+# SSDP library
+
+[![GoDoc](https://godoc.org/github.com/koron/go-ssdp?status.svg)](https://godoc.org/github.com/koron/go-ssdp)
+[![Actions/Go](https://github.com/koron/go-ssdp/workflows/Go/badge.svg)](https://github.com/koron/go-ssdp/actions?query=workflow%3AGo)
+[![Go Report Card](https://goreportcard.com/badge/github.com/koron/go-ssdp)](https://goreportcard.com/report/github.com/koron/go-ssdp)
+
+Based on <https://tools.ietf.org/html/draft-cai-ssdp-v1-03>.
+
+## Examples
+
+There are tiny snippets for example.  See also examples/ directory for working
+examples.
+
+### Respond to search
+
+```go
+import "github.com/koron/go-ssdp"
+
+ad, err := ssdp.Advertise(
+    "my:device",                        // send as "ST"
+    "unique:id",                        // send as "USN"
+    "http://192.168.0.1:57086/foo.xml", // send as "LOCATION"
+    "go-ssdp sample",                   // send as "SERVER"
+    1800)                               // send as "maxAge" in "CACHE-CONTROL"
+if err != nil {
+    panic(err)
+}
+
+// run Advertiser infinitely.
+quit := make(chan bool)
+<-quit
+```
+
+### Send alive periodically
+
+```go
+import "time"
+
+aliveTick := time.Tick(300 * time.Second)
+
+for {
+    select {
+    case <-aliveTick:
+        ad.Alive()
+    }
+}
+```
+
+### Send bye when quiting
+
+```go
+import (
+    "os"
+    "os/signal"
+)
+
+// to detect CTRL-C is pressed.
+quit := make(chan os.Signal, 1)
+signal.Notify(quit, os.Interrupt)
+
+loop:
+for {
+    select {
+    case <-aliveTick:
+        ad.Alive()
+    case <-quit:
+        break loop
+    }
+}
+
+// send/multicast "byebye" message.
+ad.Bye()
+// teminate Advertiser.
+ad.Close()
+```
+
+### Limitate interfaces to multicast
+
+go-ssdp will send multicast messages to all IPv4 interfaces as default.
+When you want to limitate interfaces, see below snippet.
+
+```go
+import (
+    "github.com/koron/go-ssdp"
+    "net"
+)
+
+en0, err := net.InterfaceByName("en0")
+if err != nil {
+    panic(err)
+}
+ssdp.Interfaces = []net.Interface{*en0}
+```
+
+go-ssdp will send multicast message only "en0" after this.