PMIM-1 hardware support: UDP, IIXDR, inclinometer

Transport:
- NmeaStreamManager supports TCP and UDP modes
- NmeaConnectionPrefs replaces hardcoded 192.168.1.1:10110; defaults
  to UDP/10110 matching PMIM-1 spec (ESP32 AP at 192.168.4.1)
- LocationService reads prefs via startNmeaFromPrefs()

Parsing:
- NmeaParser.parseXdr() handles $IIXDR attitude (HEEL/PTCH in degrees)
  and baro (pressure in bar → hPa, air temp °C)
- New AttitudeData and NmeaBaroData sensor types

UI:
- Heel + pitch row in instrument sheet (hidden until data arrives)
- InclinometerView: canvas circle with rotating waterline (heel) and
  displaced dot (pitch), colorPrimary-tinted, respects night mode
- Inclinometer overlay top-left of map, appears on first attitude packet
- NMEA baro overrides device sensor reading when available

https://claude.ai/code/session_01KXYBuAHZkvv63DeUG6XaZD

2 files changed, 73 insertions, 1 deletions

diff --git a/android-app/app/src/main/res/layout/activity_main.xml b/android-app/app/src/main/res/layout/activity_main.xml
index ca13105..d3b7942 100644
--- a/android-app/app/src/main/res/layout/activity_main.xml
+++ b/android-app/app/src/main/res/layout/activity_main.xml
@@ -53,6 +53,17 @@
                 app:layout_constraintTop_toBottomOf="@id/nav_hud"
                 app:layout_constraintEnd_toEndOf="parent" />
 
+            <!-- Inclinometer overlay — top-left, hidden until attitude data arrives -->
+            <org.terst.nav.ui.InclinometerView
+                android:id="@+id/inclinometer_view"
+                android:layout_width="72dp"
+                android:layout_height="72dp"
+                android:layout_marginStart="12dp"
+                android:layout_marginTop="8dp"
+                android:visibility="gone"
+                app:layout_constraintTop_toBottomOf="@id/nav_hud"
+                app:layout_constraintStart_toStartOf="parent" />
+
             <!-- Night mode toggle FAB -->
             <com.google.android.material.floatingactionbutton.FloatingActionButton
                 android:id="@+id/fab_night_mode"
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 5e58009..96298f9 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
@@ -158,6 +158,67 @@
 
     </LinearLayout>
 
+    <!-- Heel + Pitch row — hidden until PMIM attitude data arrives -->
+    <LinearLayout
+        android:id="@+id/attitude_row"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:visibility="gone"
+        app:layout_constraintTop_toBottomOf="@id/conditions_header"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent">
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:gravity="center"
+            android:padding="8dp">
+            <TextView style="@style/InstrumentLabel" android:text="Heel" />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_horizontal"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+                <TextView
+                    android:id="@+id/value_heel"
+                    style="@style/InstrumentPrimaryValue"
+                    tools:text="-5.2" />
+                <TextView
+                    style="@style/InstrumentUnit"
+                    android:text="°" />
+            </LinearLayout>
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:gravity="center"
+            android:padding="8dp">
+            <TextView style="@style/InstrumentLabel" android:text="Pitch" />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_horizontal"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+                <TextView
+                    android:id="@+id/value_pitch"
+                    style="@style/InstrumentPrimaryValue"
+                    tools:text="+2.1" />
+                <TextView
+                    style="@style/InstrumentUnit"
+                    android:text="°" />
+            </LinearLayout>
+        </LinearLayout>
+
+    </LinearLayout>
+
     <!-- Animated wave divider — colors adapt via wave_sky/sea color resources -->
     <org.terst.nav.ui.WaveView
         android:id="@+id/wave_divider"
@@ -165,7 +226,7 @@
         android:layout_height="72dp"
         android:layout_marginStart="-16dp"
         android:layout_marginEnd="-16dp"
-        app:layout_constraintTop_toBottomOf="@id/conditions_header"
+        app:layout_constraintTop_toBottomOf="@id/attitude_row"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent" />