fix: create socket parent directory on startup

- Create /var/run/logcorrelator/ if missing before binding sockets
- Fixes issue with tmpfs /var/run being cleared on reboot
- Add filepath import for directory handling

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

internal/adapters/inbound/unixsocket/source.go

@@ -7,6 +7,7 @@ import (
 	"math"
 	"net"
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"sync"
@@ -67,6 +68,12 @@ func (s *UnixSocketSource) Start(ctx context.Context, eventChan chan<- *domain.N
 		return fmt.Errorf("socket path cannot be empty")
 	}
 
+	// Create parent directory if it doesn't exist
+	socketDir := filepath.Dir(s.config.Path)
+	if err := os.MkdirAll(socketDir, 0755); err != nil {
+		return fmt.Errorf("failed to create socket directory %s: %w", socketDir, err)
+	}
+
 	// Remove existing socket file if present
 	if info, err := os.Stat(s.config.Path); err == nil {
 		if info.Mode()&os.ModeSocket != 0 {