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)

9_Firmware/9_3_GUI/requirements_pyqt_gui.txt

@@ -0,0 +1,20 @@
+# Requirements for PLFM Radar Dashboard - PyQt6 Edition
+# ======================================================
+# Install with: pip install -r requirements_pyqt_gui.txt
+
+# Core PyQt6 framework
+PyQt6>=6.5.0
+
+# Web engine for embedded Leaflet maps
+PyQt6-WebEngine>=6.5.0
+
+# Optional: Additional dependencies from existing radar code
+# (uncomment if integrating with existing radar processing)
+# numpy>=1.24
+# scipy>=1.10
+# scikit-learn>=1.2
+# filterpy>=1.4
+# matplotlib>=3.7
+
+# Note: The GUI uses Leaflet.js (loaded from CDN) for maps
+# No additional Python map libraries required