fix: full-repo ruff lint cleanup and CI migration to uv

Resolve all 374 ruff errors across 36 Python files (E501, E702, E722,
E741, F821, F841, invalid-syntax) bringing `ruff check .` to zero
errors repo-wide with line-length=100.

Rewrite CI workflow to use uv for dependency management, whole-repo
`ruff check .`, py_compile syntax gate, and merged python-tests job.
Add pyproject.toml with ruff config and uv dependency groups.

CI structure proposed by hcm444.

9_Firmware/9_3_GUI/GUI_V1.py

@@ -1,37 +1,52 @@
-    
-    def update_gps_display(self):
-        """Step 18: Update GPS display and center map"""
-        try:
-            while not self.gps_data_queue.empty():
-                gps_data = self.gps_data_queue.get_nowait()
-                self.current_gps = gps_data
-                
-                # Update GPS label
-                self.gps_label.config(
-                    text=f"GPS: Lat {gps_data.latitude:.6f}, Lon {gps_data.longitude:.6f}, Alt {gps_data.altitude:.1f}m")
-                
-                # Update map
-                self.update_map_display(gps_data)
-                
-        except queue.Empty:
-            pass
-    
-    def update_map_display(self, gps_data):
-        """Step 18: Update map display with current GPS position"""
-        try:
-            self.map_label.config(text=f"Radar Position: {gps_data.latitude:.6f}, {gps_data.longitude:.6f}\n"
-                                     f"Altitude: {gps_data.altitude:.1f}m\n"
-                                     f"Coverage: 50km radius\n"
-                                     f"Map centered on GPS coordinates")
-            
-        except Exception as e:
-            logging.error(f"Error updating map display: {e}")
+import logging
+import queue
+import tkinter as tk
+from tkinter import messagebox
+
+
+class RadarGUI:
+    def update_gps_display(self):
+        """Step 18: Update GPS display and center map"""
+        try:
+            while not self.gps_data_queue.empty():
+                gps_data = self.gps_data_queue.get_nowait()
+                self.current_gps = gps_data
+
+                # Update GPS label
+                self.gps_label.config(
+                    text=(
+                        f"GPS: Lat {gps_data.latitude:.6f}, "
+                        f"Lon {gps_data.longitude:.6f}, "
+                        f"Alt {gps_data.altitude:.1f}m"
+                    )
+                )
+
+                # Update map
+                self.update_map_display(gps_data)
+
+        except queue.Empty:
+            pass
+
+    def update_map_display(self, gps_data):
+        """Step 18: Update map display with current GPS position"""
+        try:
+            self.map_label.config(
+                text=(
+                    f"Radar Position: {gps_data.latitude:.6f}, {gps_data.longitude:.6f}\n"
+                    f"Altitude: {gps_data.altitude:.1f}m\n"
+                    f"Coverage: 50km radius\n"
+                    f"Map centered on GPS coordinates"
+                )
+            )
+
+        except Exception as e:
+            logging.error(f"Error updating map display: {e}")
 
-def main():
+def main():
     """Main application entry point"""
     try:
         root = tk.Tk()
-        app = RadarGUI(root)
+        _app = RadarGUI(root)
         root.mainloop()
     except Exception as e:
         logging.error(f"Application error: {e}")