fix: enforce strict ruff lint (17 rule sets) across entire repo

- Expand ruff config from E/F to 17 rule sets (B, RUF, SIM, PIE, T20,
  ARG, ERA, A, BLE, RET, ISC, TCH, UP, C4, PERF)
- Fix 907 lint errors across all Python files (GUI, FPGA cosim,
  schematics scripts, simulations, utilities, tools)
- Replace all blind except-Exception with specific exception types
- Remove commented-out dead code (ERA001) from cosim/simulation files
- Modernize typing: deprecated typing.List/Dict/Tuple to builtins
- Fix unused args/loop vars, ambiguous unicode, perf anti-patterns
- Delete legacy GUI files V1-V4
- Add V7 test suite, requirements files
- All CI jobs pass: ruff (0 errors), py_compile, pytest (92/92),
  MCU tests (20/20), FPGA regression (25/25)

8_Utils/Python/RADAR_eq.py

@@ -58,10 +58,10 @@ class RadarCalculatorGUI:
         scrollbar = ttk.Scrollbar(self.input_frame, orient="vertical", command=canvas.yview)
         scrollable_frame = ttk.Frame(canvas)
         
-        scrollable_frame.bind(
-            "<Configure>",
-            lambda e: canvas.configure(scrollregion=canvas.bbox("all"))
-        )
+        scrollable_frame.bind(
+            "<Configure>",
+            lambda _e: canvas.configure(scrollregion=canvas.bbox("all"))
+        )
         
         canvas.create_window((0, 0), window=scrollable_frame, anchor="nw")
         canvas.configure(yscrollcommand=scrollbar.set)
@@ -83,7 +83,7 @@ class RadarCalculatorGUI:
         
         self.entries = {}
         
-        for i, (label, default) in enumerate(inputs):
+        for _i, (label, default) in enumerate(inputs):
             # Create a frame for each input row
             row_frame = ttk.Frame(scrollable_frame)
             row_frame.pack(fill=tk.X, pady=5)
@@ -119,8 +119,8 @@ class RadarCalculatorGUI:
         calculate_btn.pack()
         
         # Bind hover effect
-        calculate_btn.bind("<Enter>", lambda e: calculate_btn.config(bg='#45a049'))
-        calculate_btn.bind("<Leave>", lambda e: calculate_btn.config(bg='#4CAF50'))
+        calculate_btn.bind("<Enter>", lambda _e: calculate_btn.config(bg='#45a049'))
+        calculate_btn.bind("<Leave>", lambda _e: calculate_btn.config(bg='#4CAF50'))
         
     def create_results_display(self):
         """Create the results display area"""
@@ -135,10 +135,10 @@ class RadarCalculatorGUI:
         scrollbar = ttk.Scrollbar(self.results_frame, orient="vertical", command=canvas.yview)
         scrollable_frame = ttk.Frame(canvas)
         
-        scrollable_frame.bind(
-            "<Configure>",
-            lambda e: canvas.configure(scrollregion=canvas.bbox("all"))
-        )
+        scrollable_frame.bind(
+            "<Configure>",
+            lambda _e: canvas.configure(scrollregion=canvas.bbox("all"))
+        )
         
         canvas.create_window((0, 0), window=scrollable_frame, anchor="nw")
         canvas.configure(yscrollcommand=scrollbar.set)
@@ -158,7 +158,7 @@ class RadarCalculatorGUI:
         
         self.results_labels = {}
         
-        for i, (label, key) in enumerate(results):
+        for _i, (label, key) in enumerate(results):
             # Create a frame for each result row
             row_frame = ttk.Frame(scrollable_frame)
             row_frame.pack(fill=tk.X, pady=10, padx=20)
@@ -180,10 +180,10 @@ class RadarCalculatorGUI:
         note_text = """
         NOTES:
         • Maximum detectable range is calculated using the radar equation
-        • Range resolution = c × τ / 2, where τ is pulse duration
-        • Maximum unambiguous range = c / (2 × PRF)
-        • Maximum detectable speed = λ × PRF / 4
-        • Speed resolution = λ × PRF / (2 × N) where N is number of pulses (assumed 1)
+        • Range resolution = c x τ / 2, where τ is pulse duration
+        • Maximum unambiguous range = c / (2 x PRF)
+        • Maximum detectable speed = λ x PRF / 4
+        • Speed resolution = λ x PRF / (2 x N) where N is number of pulses (assumed 1)
         • λ (wavelength) = c / f
         """
         
@@ -300,10 +300,10 @@ class RadarCalculatorGUI:
             # Show success message
             messagebox.showinfo("Success", "Calculation completed successfully!")
             
-        except Exception as e:
+        except (ValueError, ZeroDivisionError) as e:
             messagebox.showerror(
                 "Calculation Error",
-                f"An error occurred during calculation:\n{str(e)}",
+                f"An error occurred during calculation:\n{e!s}",
             )
             
 def main():