fix(gui): P-4 — dashboard NUM_RANGE_BINS 64 → 512 (import from radar_protocol)

dashboard.py:77 had a stale `NUM_RANGE_BINS = 64` literal from pre-PR-F.
Range-Doppler canvas was mis-sized: parser at radar_protocol.py:425
already enforces 512, so production frames would never have rendered
correctly even with P-2/P-3 in place.

Fix: drop the local literals; re-export NUM_RANGE_BINS / NUM_DOPPLER_BINS
through v7/hardware.py (which already re-exports the rest of
radar_protocol) and import them in dashboard.py. Single source of truth.

Also fixed two stale "(64x32)" docstrings: module-header tab description
and `_on_frame_ready` docstring.

Regression: 228/228 (test_v7 111 + test_GUI_V65_Tk 117). Ruff clean.

9_Firmware/9_3_GUI/v7/dashboard.py

@@ -2,7 +2,7 @@
 v7.dashboard — Main application window for the PLFM Radar GUI V7.
 
 RadarDashboard is a QMainWindow with six tabs:
-  1. Main View   — Range-Doppler matplotlib canvas (64x32), device combos,
+  1. Main View   — Range-Doppler matplotlib canvas (512x48), device combos,
                    Start/Stop, targets table
   2. Map View    — Embedded Leaflet map + sidebar
   3. FPGA Control — Full FPGA register control panel (all 27 opcodes incl. AGC,
@@ -62,6 +62,8 @@ from .hardware import (
     StatusResponse,
     DataRecorder,
     STM32USBInterface,
+    NUM_RANGE_BINS,
+    NUM_DOPPLER_BINS,
 )
 from .processing import RadarProcessor, USBPacketParser
 from .workers import RadarDataWorker, GPSDataWorker, TargetSimulator, ReplayWorker
@@ -73,10 +75,6 @@ if TYPE_CHECKING:
 
 logger = logging.getLogger(__name__)
 
-# Frame dimensions from FPGA (mirrors radar_protocol.NUM_*; PR-F/PR-Q)
-NUM_RANGE_BINS = 64
-NUM_DOPPLER_BINS = 48
-
 # Force C locale (period as decimal separator) for all QDoubleSpinBox instances.
 _C_LOCALE = QLocale(QLocale.Language.C)
 _C_LOCALE.setNumberOptions(QLocale.NumberOption.RejectGroupSeparator)
@@ -1665,7 +1663,7 @@ class RadarDashboard(QMainWindow):
 
     @pyqtSlot(object)
     def _on_frame_ready(self, frame: RadarFrame):
-        """Handle a complete 64x32 radar frame from production acquisition."""
+        """Handle a complete radar frame (NUM_RANGE_BINS x NUM_DOPPLER_BINS) from production acquisition."""  # noqa: E501
         self._current_frame = frame
         self._frame_count += 1
 

9_Firmware/9_3_GUI/v7/hardware.py

@@ -32,6 +32,8 @@ from radar_protocol import (  # noqa: F401 — re-exported for v7 package
     RadarFrame,
     StatusResponse,
     DataRecorder,
+    NUM_RANGE_BINS,
+    NUM_DOPPLER_BINS,
 )
 
 logger = logging.getLogger(__name__)