merge: reconcile master particle-wind work with origin/main redesign

Merged divergent branches (common ancestor a9d87b6). Took origin/main
as base (layer manager, recenter, quit button, GPX tracks, marine
conditions, dark theme, user position layer, active/past track layers)
and layered in particle wind simulation work:

- MapHandler: added setupWindLayer, updateWindLayer, updateWindGridLayer;
  kept their user-pos layer, follow/recenter state, active+past tracks
- WeatherRepository: kept their fetchCurrentConditions, added fetchWindGrid
- MainViewModel: kept their track/marine/summary changes, added windGrid
  StateFlow, loadWindGrid, buildGrid
- MainActivity: kept their full UI (layer picker, quit, recenter, fade
  animations), added particleWindView wiring, weatherLoaded guard,
  windArrow/windGrid observers
- activity_main.xml: took their LinearLayout redesign, added ParticleWindView
  overlay inside ConstraintLayout

https://claude.ai/code/session_01HXPjBsogsJVRwCiekDGkJX

1 files changed, 64 insertions, 8 deletions

diff --git a/android-app/app/src/main/res/values/themes.xml b/android-app/app/src/main/res/values/themes.xml
index b18f4a8..8baa509 100755
--- a/android-app/app/src/main/res/values/themes.xml
+++ b/android-app/app/src/main/res/values/themes.xml
@@ -24,7 +24,7 @@
         <item name="colorOnErrorContainer">@color/md_theme_onErrorContainer</item>
         
         <item name="android:statusBarColor" tools:targetApi="l">?attr/colorSurface</item>
-        <item name="android:windowLightStatusBar">true</item>
+        <item name="android:windowLightStatusBar">false</item>
     </style>
 
     <!-- Night Vision Theme (Stays Dark and Red) -->
@@ -45,8 +45,9 @@
         <item name="android:textColor">@color/instrument_text_secondary</item>
         <item name="android:textSize">@dimen/text_size_instrument_label</item>
         <item name="android:textAllCaps">true</item>
-        <item name="android:letterSpacing">0.1</item>
-        <item name="android:textStyle">bold</item>
+        <item name="android:letterSpacing">0.12</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:fontFamily">sans-serif-light</item>
     </style>
 
     <style name="InstrumentPrimaryValue" parent="android:Widget.TextView">
@@ -54,15 +55,70 @@
         <item name="android:layout_height">wrap_content</item>
         <item name="android:textColor">@color/instrument_text_normal</item>
         <item name="android:textSize">@dimen/text_size_instrument_primary</item>
-        <item name="android:textStyle">bold</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:fontFamily">sans-serif-light</item>
         <item name="android:includeFontPadding">false</item>
     </style>
 
-    <style name="InstrumentSecondaryLabel" parent="android:Widget.TextView">
-        <item name="android:textColor">@color/instrument_text_secondary</item>
-        <item name="android:textSize">@dimen/text_size_instrument_secondary</item>
+    <style name="InstrumentUnit" parent="android:Widget.TextView">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:textColor">#6B6070</item>
+        <item name="android:textSize">@dimen/text_size_instrument_unit</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:layout_marginStart">2dp</item>
+        <item name="android:layout_marginBottom">3dp</item>
+    </style>
+
+    <style name="ForecastLabel" parent="android:Widget.TextView">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:textColor">#5B9EC2</item>
+        <item name="android:textSize">@dimen/text_size_forecast_label</item>
+        <item name="android:textAllCaps">true</item>
+        <item name="android:letterSpacing">0.12</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:fontFamily">sans-serif-light</item>
+    </style>
+
+    <style name="ForecastValue" parent="android:Widget.TextView">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:textColor">#CAE8FF</item>
+        <item name="android:textSize">@dimen/text_size_forecast_value</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:fontFamily">sans-serif-light</item>
+        <item name="android:includeFontPadding">false</item>
     </style>
-    
+
+    <style name="ForecastUnit" parent="android:Widget.TextView">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:textColor">#3B6785</item>
+        <item name="android:textSize">@dimen/text_size_forecast_label</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:layout_marginStart">2dp</item>
+        <item name="android:layout_marginBottom">2dp</item>
+    </style>
+
+    <style name="ForecastBearing" parent="android:Widget.TextView">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:textColor">#6FC3E8</item>
+        <item name="android:textSize">@dimen/text_size_forecast_bearing</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:layout_marginStart">4dp</item>
+    </style>
+
+    <style name="ForecastPeriod" parent="android:Widget.TextView">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:textColor">#4A7FA0</item>
+        <item name="android:textSize">@dimen/text_size_forecast_bearing</item>
+        <item name="android:textStyle">normal</item>
+        <item name="android:layout_marginStart">4dp</item>
+    </style>
+
     <style name="InstrumentCard" parent="Widget.Material3.CardView.Elevated">
         <item name="cardBackgroundColor">@color/instrument_card_background</item>
         <item name="cardCornerRadius">12dp</item>