fix: sécuriser shutdown, config par défaut et reconnexion socket

Co-authored-by: aider (openrouter/openai/gpt-5.3-codex) <aider@aider.chat>

internal/output/writers.go

@@ -103,13 +103,20 @@ func (w *UnixSocketWriter) Write(rec api.LogRecord) error {
 	w.mutex.Lock()
 	defer w.mutex.Unlock()
 
-	// Connect if not already connected
-	if w.conn == nil {
+	ensureConn := func() error {
+		if w.conn != nil {
+			return nil
+		}
 		conn, err := net.Dial("unix", w.socketPath)
 		if err != nil {
 			return fmt.Errorf("failed to connect to socket %s: %w", w.socketPath, err)
 		}
 		w.conn = conn
+		return nil
+	}
+
+	if err := ensureConn(); err != nil {
+		return err
 	}
 
 	data, err := json.Marshal(rec)
@@ -120,12 +127,18 @@ func (w *UnixSocketWriter) Write(rec api.LogRecord) error {
 	// Add newline for line-based protocols
 	data = append(data, '\n')
 
-	_, err = w.conn.Write(data)
-	if err != nil {
-		// Connection failed, try to reconnect
-		w.conn.Close()
+	if _, err = w.conn.Write(data); err != nil {
+		_ = w.conn.Close()
 		w.conn = nil
-		return fmt.Errorf("failed to write to socket: %w", err)
+
+		if err2 := ensureConn(); err2 != nil {
+			return fmt.Errorf("failed to write to socket and reconnect failed: %w", err2)
+		}
+		if _, err2 := w.conn.Write(data); err2 != nil {
+			_ = w.conn.Close()
+			w.conn = nil
+			return fmt.Errorf("failed to write to socket after reconnect: %w", err2)
+		}
 	}
 
 	return nil