feat(instruments): replace simulation with real GPS and barometer data

- Drop VMG, Polar %, and PolarDiagramView — no NMEA source on boat
- Shrink grid to 3×2 (AWS/HDG/BSP / TWS/COG/SOG)
- Move Depth + Baro to expanded section side by side
- Initialize all instruments to "—" on startup
- Wire LocationService.locationFlow → SOG + COG display (real GPS)
- Wire LocationService.barometerStatus → Baro display (device sensor)
- Delete startInstrumentSimulation() fake loop entirely

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 28 insertions, 60 deletions

diff --git a/android-app/app/src/main/res/layout/layout_instruments_sheet.xml b/android-app/app/src/main/res/layout/layout_instruments_sheet.xml
index 0a84418..c651ba2 100644
--- a/android-app/app/src/main/res/layout/layout_instruments_sheet.xml
+++ b/android-app/app/src/main/res/layout/layout_instruments_sheet.xml
@@ -16,14 +16,14 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent" />
 
-    <!-- Grid of Instruments -->
+    <!-- 3×2 grid: AWS/HDG/BSP top row, TWS/COG/SOG bottom row -->
     <androidx.gridlayout.widget.GridLayout
         android:id="@+id/instrument_grid"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="16dp"
         app:columnCount="3"
-        app:rowCount="3"
+        app:rowCount="2"
         app:layout_constraintTop_toBottomOf="@id/drag_handle">
 
         <!-- Wind: AWS -->
@@ -35,7 +35,7 @@
             android:gravity="center"
             android:padding="8dp">
             <TextView style="@style/InstrumentLabel" android:text="AWS" />
-            <TextView android:id="@+id/value_aws" style="@style/InstrumentPrimaryValue" tools:text="12.5" />
+            <TextView android:id="@+id/value_aws" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
         <!-- Compass: HDG -->
@@ -47,7 +47,7 @@
             android:gravity="center"
             android:padding="8dp">
             <TextView style="@style/InstrumentLabel" android:text="HDG" />
-            <TextView android:id="@+id/value_hdg" style="@style/InstrumentPrimaryValue" tools:text="225" />
+            <TextView android:id="@+id/value_hdg" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
         <!-- Performance: BSP -->
@@ -59,7 +59,7 @@
             android:gravity="center"
             android:padding="8dp">
             <TextView style="@style/InstrumentLabel" android:text="BSP" />
-            <TextView android:id="@+id/value_bsp" style="@style/InstrumentPrimaryValue" tools:text="6.2" />
+            <TextView android:id="@+id/value_bsp" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
         <!-- Wind: TWS -->
@@ -71,7 +71,7 @@
             android:gravity="center"
             android:padding="8dp">
             <TextView style="@style/InstrumentLabel" android:text="TWS" />
-            <TextView android:id="@+id/value_tws" style="@style/InstrumentPrimaryValue" tools:text="15.0" />
+            <TextView android:id="@+id/value_tws" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
         <!-- Compass: COG -->
@@ -83,7 +83,7 @@
             android:gravity="center"
             android:padding="8dp">
             <TextView style="@style/InstrumentLabel" android:text="COG" />
-            <TextView android:id="@+id/value_cog" style="@style/InstrumentPrimaryValue" tools:text="230" />
+            <TextView android:id="@+id/value_cog" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
         <!-- Performance: SOG -->
@@ -95,72 +95,40 @@
             android:gravity="center"
             android:padding="8dp">
             <TextView style="@style/InstrumentLabel" android:text="SOG" />
-            <TextView android:id="@+id/value_sog" style="@style/InstrumentPrimaryValue" tools:text="6.5" />
+            <TextView android:id="@+id/value_sog" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
-        <!-- VMG -->
-        <LinearLayout
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            app:layout_columnWeight="1"
-            android:orientation="vertical"
-            android:gravity="center"
-            android:padding="8dp">
-            <TextView style="@style/InstrumentLabel" android:text="VMG" />
-            <TextView android:id="@+id/value_vmg" style="@style/InstrumentPrimaryValue" tools:text="4.2" />
-        </LinearLayout>
+    </androidx.gridlayout.widget.GridLayout>
+
+    <!-- Expanded: Depth + Baro side by side -->
+    <LinearLayout
+        android:id="@+id/expanded_instruments"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:layout_marginTop="24dp"
+        app:layout_constraintTop_toBottomOf="@id/instrument_grid"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent">
 
-        <!-- Depth -->
         <LinearLayout
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-            app:layout_columnWeight="1"
-            android:orientation="vertical"
-            android:gravity="center"
-            android:padding="8dp">
+            android:layout_weight="1"
+            android:orientation="vertical">
             <TextView style="@style/InstrumentLabel" android:text="Depth" />
-            <TextView android:id="@+id/value_depth" style="@style/InstrumentPrimaryValue" tools:text="12.0" />
+            <TextView android:id="@+id/value_depth" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
-        <!-- Polar % -->
         <LinearLayout
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-            app:layout_columnWeight="1"
-            android:orientation="vertical"
-            android:gravity="center"
-            android:padding="8dp">
-            <TextView style="@style/InstrumentLabel" android:text="Polar %" />
-            <TextView android:id="@+id/value_polar_pct" style="@style/InstrumentPrimaryValue" tools:text="95%" />
+            android:layout_weight="1"
+            android:orientation="vertical">
+            <TextView style="@style/InstrumentLabel" android:text="Baro" />
+            <TextView android:id="@+id/value_baro" style="@style/InstrumentPrimaryValue" tools:text="—" />
         </LinearLayout>
 
-    </androidx.gridlayout.widget.GridLayout>
-
-    <!-- Additional Detail (Visible when expanded) -->
-    <TextView
-        android:id="@+id/label_baro"
-        style="@style/InstrumentLabel"
-        android:text="Barometer"
-        android:layout_marginTop="24dp"
-        app:layout_constraintTop_toBottomOf="@id/instrument_grid"
-        app:layout_constraintStart_toStartOf="parent" />
-
-    <TextView
-        android:id="@+id/value_baro"
-        style="@style/InstrumentPrimaryValue"
-        tools:text="1013.2 hPa"
-        app:layout_constraintTop_toBottomOf="@id/label_baro"
-        app:layout_constraintStart_toStartOf="parent" />
-
-    <org.terst.nav.PolarDiagramView
-        android:id="@+id/polar_diagram_view"
-        android:layout_width="0dp"
-        android:layout_height="0dp"
-        android:layout_marginTop="24dp"
-        app:layout_constraintDimensionRatio="1:1"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/value_baro"
-        app:layout_constraintBottom_toBottomOf="parent" />
+    </LinearLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>