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/pbnjay/memory/memory_linux.go

@@ -0,0 +1,29 @@
+// +build linux
+
+package memory
+
+import "syscall"
+
+func sysTotalMemory() uint64 {
+	in := &syscall.Sysinfo_t{}
+	err := syscall.Sysinfo(in)
+	if err != nil {
+		return 0
+	}
+	// If this is a 32-bit system, then these fields are
+	// uint32 instead of uint64.
+	// So we always convert to uint64 to match signature.
+	return uint64(in.Totalram) * uint64(in.Unit)
+}
+
+func sysFreeMemory() uint64 {
+	in := &syscall.Sysinfo_t{}
+	err := syscall.Sysinfo(in)
+	if err != nil {
+		return 0
+	}
+	// If this is a 32-bit system, then these fields are
+	// uint32 instead of uint64.
+	// So we always convert to uint64 to match signature.
+	return uint64(in.Freeram) * uint64(in.Unit)
+}