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)

5_Simulations/array_pattern_Kaiser25dB_like.py

@@ -27,7 +27,7 @@ n_idx = np.arange(N) - (N-1)/2
 y_positions = m_idx * dy
 z_positions = n_idx * dz
 
-def element_factor(theta_rad, phi_rad):
+def element_factor(theta_rad, _phi_rad):
     return np.abs(np.cos(theta_rad))
 
 def array_factor(theta_rad, phi_rad, y_positions, z_positions, wy, wz, theta0_rad, phi0_rad):
@@ -105,8 +105,3 @@ plt.title('Array Pattern Heatmap (|AF·EF|, dB) — Kaiser ~-25 dB')
 plt.tight_layout()
 plt.savefig('Heatmap_Kaiser25dB_like.png', bbox_inches='tight')
 plt.show()
-
-print(
-    'Saved: E_plane_Kaiser25dB_like.png, H_plane_Kaiser25dB_like.png, '
-    'Heatmap_Kaiser25dB_like.png'
-)