feat(tracks): show summary sheet on track stop; 2-min minimum

TrackSummarySheet: bottom sheet showing distance (nm), duration,
max/avg speed, avg wind and waves (when available, waves in ft).
Only shown for tracks ≥ 2 minutes — shorter tracks are discarded silently.

MainViewModel: exposes trackSummary SharedFlow (replay=0) and trackStartMs.
MainActivity: observes flow, shows sheet after stopTrack completes.

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

1 files changed, 199 insertions, 0 deletions

diff --git a/android-app/app/src/main/res/layout/layout_track_summary_sheet.xml b/android-app/app/src/main/res/layout/layout_track_summary_sheet.xml
new file mode 100644
index 0000000..a26b76e
--- /dev/null
+++ b/android-app/app/src/main/res/layout/layout_track_summary_sheet.xml
@@ -0,0 +1,199 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:paddingStart="24dp"
+    android:paddingEnd="24dp"
+    android:paddingBottom="32dp"
+    android:background="?attr/colorSurface">
+
+    <!-- Drag handle -->
+    <View
+        android:layout_width="36dp"
+        android:layout_height="4dp"
+        android:layout_gravity="center_horizontal"
+        android:layout_marginTop="12dp"
+        android:layout_marginBottom="20dp"
+        android:background="@color/md_theme_outline" />
+
+    <!-- Title -->
+    <TextView
+        android:id="@+id/summary_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="20dp"
+        android:textSize="13sp"
+        android:textAllCaps="true"
+        android:letterSpacing="0.12"
+        android:fontFamily="sans-serif-light"
+        android:textColor="@color/instrument_text_secondary"
+        tools:text="Track · 06 Apr 14:32" />
+
+    <!-- Distance + Duration row -->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:layout_marginBottom="16dp">
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical">
+            <TextView
+                style="@style/InstrumentLabel"
+                android:text="Distance" />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+                <TextView
+                    android:id="@+id/summary_distance"
+                    style="@style/InstrumentPrimaryValue"
+                    tools:text="12.3" />
+                <TextView
+                    style="@style/InstrumentUnit"
+                    android:text="nm" />
+            </LinearLayout>
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical">
+            <TextView
+                style="@style/InstrumentLabel"
+                android:text="Duration" />
+            <TextView
+                android:id="@+id/summary_duration"
+                style="@style/InstrumentPrimaryValue"
+                tools:text="2h 14m" />
+        </LinearLayout>
+
+    </LinearLayout>
+
+    <!-- Speed row -->
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:layout_marginBottom="16dp">
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical">
+            <TextView
+                style="@style/InstrumentLabel"
+                android:text="Max Speed" />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+                <TextView
+                    android:id="@+id/summary_max_sog"
+                    style="@style/InstrumentPrimaryValue"
+                    tools:text="8.1" />
+                <TextView
+                    style="@style/InstrumentUnit"
+                    android:text="kt" />
+            </LinearLayout>
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical">
+            <TextView
+                style="@style/InstrumentLabel"
+                android:text="Avg Speed" />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+                <TextView
+                    android:id="@+id/summary_avg_sog"
+                    style="@style/InstrumentPrimaryValue"
+                    tools:text="5.5" />
+                <TextView
+                    style="@style/InstrumentUnit"
+                    android:text="kt" />
+            </LinearLayout>
+        </LinearLayout>
+
+    </LinearLayout>
+
+    <!-- Wind + Waves row (conditionally visible) -->
+    <LinearLayout
+        android:id="@+id/summary_conditions_row"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:visibility="gone"
+        tools:visibility="visible">
+
+        <LinearLayout
+            android:id="@+id/summary_wind_cell"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:visibility="gone"
+            tools:visibility="visible">
+            <TextView
+                style="@style/InstrumentLabel"
+                android:text="Avg Wind" />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+                <TextView
+                    android:id="@+id/summary_avg_wind"
+                    style="@style/InstrumentPrimaryValue"
+                    tools:text="14" />
+                <TextView
+                    style="@style/InstrumentUnit"
+                    android:text="kt" />
+            </LinearLayout>
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/summary_wave_cell"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical"
+            android:visibility="gone"
+            tools:visibility="visible">
+            <TextView
+                style="@style/InstrumentLabel"
+                android:text="Avg Waves" />
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical">
+                <TextView
+                    android:id="@+id/summary_avg_wave"
+                    style="@style/InstrumentPrimaryValue"
+                    tools:text="2.1" />
+                <TextView
+                    style="@style/InstrumentUnit"
+                    android:text="ft" />
+            </LinearLayout>
+        </LinearLayout>
+
+    </LinearLayout>
+
+</LinearLayout>