GUI: Default fluorescence file name contains sample name

gui/src/aaregui/main_window.py

@@ -347,6 +347,7 @@ class MainWindow(QMainWindow):
 
         self.daq.update.connect(self.sample_logic.update_daq_status)
         self.daq.update.connect(self.manual_sample_panel.update_daq_status)
+        self.daq.update.connect(self.fluor_panel.update_daq_status)
         self.daq.update.connect(self.update_daq_status)
 
         self.daq.standard_scan_completed.connect(self.rotation.scan_completed)

gui/src/aaregui/panels/fluorescence_panel.py

@@ -5,7 +5,7 @@ from PySide6.QtGui import QPainter, QColor, QPen
 from PySide6.QtWidgets import QWidget, QGridLayout, QGraphicsSimpleTextItem, QLabel
 
 from aaredaqlib.logger_config import setup_logger
-from aaredaqlib.models import FluorescenceSpectrumOutputModel
+from aaredaqlib.models import FluorescenceSpectrumOutputModel, DAQStatusModel
 
 logger = setup_logger("aareGUI")
 
@@ -44,6 +44,7 @@ class FluorescencePanel(QWidget):
 
         self._last_x_keV = None
         self._last_y_counts = None
+        self._sample_name = None
 
         # Average dead time label
         self.avg_dead_label = QLabel("Average dead time: -")
@@ -122,13 +123,19 @@ class FluorescencePanel(QWidget):
                 if self.series.count() == 0:
                     logger.info("No data to save.")
                     return
+
                 # Prefer cached arrays; fall back to reading from series
                 x_vals = self._last_x_keV
                 y_vals = self._last_y_counts
                 if x_vals is None or y_vals is None or len(x_vals) != self.series.count():
                     x_vals = [self.series.at(i).x() for i in range(self.series.count())]
                     y_vals = [self.series.at(i).y() for i in range(self.series.count())]
-                path, _ = QFileDialog.getSaveFileName(self, "Save Spectrum CSV", "spectrum.csv", "CSV files (*.csv)")
+
+                default_name = "spectrum.csv"
+                if self._sample_name is not None:
+                    default_name = f"{self._sample_name}_spectrum.csv"
+
+                path, _ = QFileDialog.getSaveFileName(self, "Save Spectrum CSV", default_name, "CSV files (*.csv)")
                 if not path:
                     return
                 try:
@@ -232,4 +239,11 @@ class FluorescencePanel(QWidget):
                 self.axis_x.setRange(xmin, xmax)
                 self.axis_y.setRange(ymin, ymax)
         except Exception as e:
-            logger.error(f"Update plot error: {e}")
+            logger.error(f"Update plot error: {e}")
+
+    @Slot(DAQStatusModel)
+    def update_daq_status(self, s: DAQStatusModel):
+        if s.sample is not None:
+            self._sample_name = s.sample.sample_name
+        else:
+            self._sample_name = None