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/jbenet/goprocess/background.go

@@ -0,0 +1,33 @@
+package goprocess
+
+// Background returns the "bgProcess" Process: a statically allocated
+// process that can _never_ close. It also never enters Closing() state.
+// Calling Background().Close() will hang indefinitely.
+func Background() Process {
+	return background
+}
+
+var background = new(bgProcess)
+
+type bgProcess struct{}
+
+func (*bgProcess) WaitFor(q Process)         {}
+func (*bgProcess) AddChildNoWait(q Process)  {}
+func (*bgProcess) AddChild(q Process)        {}
+func (*bgProcess) Close() error              { select {} }
+func (*bgProcess) CloseAfterChildren() error { select {} }
+func (*bgProcess) Closing() <-chan struct{}  { return nil }
+func (*bgProcess) Closed() <-chan struct{}   { return nil }
+func (*bgProcess) Err() error                { select {} }
+
+func (*bgProcess) SetTeardown(tf TeardownFunc) {
+	panic("can't set teardown on bgProcess process")
+}
+func (*bgProcess) Go(f ProcessFunc) Process {
+	child := newProcess(nil)
+	go func() {
+		f(child)
+		child.Close()
+	}()
+	return child
+}