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/quic-go/webtransport-go/README.md

@@ -0,0 +1,39 @@
+# webtransport-go
+
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/quic-go/webtransport-go)](https://pkg.go.dev/github.com/quic-go/webtransport-go)
+[![Code Coverage](https://img.shields.io/codecov/c/github/quic-go/webtransport-go/master.svg?style=flat-square)](https://codecov.io/gh/quic-go/webtransport-go/)
+
+webtransport-go is an implementation of the WebTransport protocol, based on [quic-go](https://github.com/quic-go/quic-go). It currently implements [draft-02](https://www.ietf.org/archive/id/draft-ietf-webtrans-http3-02.html) of the specification.
+
+## Running a Server
+
+```go
+// create a new webtransport.Server, listening on (UDP) port 443
+s := webtransport.Server{
+    H3: http3.Server{Addr: ":443"},
+}
+
+// Create a new HTTP endpoint /webtransport.
+http.HandleFunc("/webtransport", func(w http.ResponseWriter, r *http.Request) {
+    conn, err := s.Upgrade(w, r)
+    if err != nil {
+        log.Printf("upgrading failed: %s", err)
+        w.WriteHeader(500)
+        return
+    }
+    // Handle the connection. Here goes the application logic. 
+})
+
+s.ListenAndServeTLS(certFile, keyFile)
+```
+
+Now that the server is running, Chrome can be used to establish a new WebTransport session as described in [this tutorial](https://web.dev/webtransport/).
+
+## Running a Client
+
+```go
+var d webtransport.Dialer
+rsp, conn, err := d.Dial(ctx, "https://example.com/webtransport", nil)
+// err is only nil if rsp.StatusCode is a 2xx
+// Handle the connection. Here goes the application logic.
+```