merge: integrate weather/forecast feature from local remote

Merges wind/current overlay and weather forecast implementation:
- Weather feature: WeatherRepository, MainViewModel, MapFragment, ForecastFragment, ForecastAdapter
- Data models: WindArrow, ForecastItem, WeatherResponse, MarineResponse
- API services: WeatherApiService, MarineApiService (Open-Meteo, no key required)
- Layouts: activity_weather.xml, fragment_map.xml, fragment_forecast.xml, item_forecast.xml
- Resources: merged colors (wind_slow/medium/strong), strings, themes (Theme.NavApp added)
- Manifest: added ACCESS_COARSE_LOCATION
- build.gradle: merged deps — kept Firebase+MapLibre 11.5.1, added kotlin-kapt, retrofit, moshi, turbine
- Fix: re-packaged com.example.androidapp → org.terst.nav; weather MainActivity uses ActivityWeatherBinding

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

3 files changed, 52 insertions, 25 deletions

diff --git a/android-app/app/src/main/res/values/colors.xml b/android-app/app/src/main/res/values/colors.xml
index 32f5036..43e0076 100755
--- a/android-app/app/src/main/res/values/colors.xml
+++ b/android-app/app/src/main/res/values/colors.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <color name="purple_200">#FFBB86FC</color>
     <color name="purple_500">#FF6200EE</color>
@@ -7,21 +8,34 @@
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
 
+    <!-- Maritime theme colors -->
+    <color name="primary">#0D47A1</color>
+    <color name="primary_dark">#002171</color>
+    <color name="accent">#FF6D00</color>
+    <color name="surface">#FFFFFF</color>
+    <color name="on_primary">#FFFFFF</color>
+
     <!-- Colors for instrument display -->
-    <color name="instrument_text_normal">#FFFFFFFF</color> <!-- White for normal text on dark background -->
-    <color name="instrument_text_secondary">#B3FFFFFF</color> <!-- 70% white -->
-    <color name="instrument_text_alarm">#FFFF0000</color>  <!-- Red for alarm -->
-    <color name="instrument_text_stale">#FFFFFF00</color>  <!-- Yellow for stale data -->
-    <color name="instrument_background">#E61E1E1E</color> <!-- Slightly transparent dark grey -->
-    <color name="mob_button_background">#FFD70000</color> <!-- High-contrast red for MOB button -->
+    <color name="instrument_text_normal">#FFFFFFFF</color>
+    <color name="instrument_text_secondary">#B3FFFFFF</color>
+    <color name="instrument_text_alarm">#FFFF0000</color>
+    <color name="instrument_text_stale">#FFFFFF00</color>
+    <color name="instrument_background">#E61E1E1E</color>
+    <color name="mob_button_background">#FFD70000</color>
     <color name="anchor_button_background">#3F51B5</color>
 
+    <!-- Wind overlay colors -->
+    <color name="wind_arrow">#FFFFFFFF</color>
+    <color name="wind_slow">#4CAF50</color>
+    <color name="wind_medium">#FF9800</color>
+    <color name="wind_strong">#F44336</color>
+
     <!-- Night Vision Mode Colors -->
-    <color name="night_red_primary">#FFFF0000</color>    <!-- Bright red for primary elements -->
-    <color name="night_red_variant">#FFBB0000</color>   <!-- Slightly darker red for variants -->
-    <color name="night_on_red">#FF000000</color>         <!-- Black text on red background -->
-    <color name="night_background">#FF000000</color>    <!-- Pure black background -->
-    <color name="night_on_background">#FFFF0000</color> <!-- Bright red text on black background -->
-    <color name="night_surface">#FF110000</color>       <!-- Very dark red surface color -->
-    <color name="night_on_surface">#FFFF0000</color>    <!-- Red text on dark red surface -->
-</resources>
\ No newline at end of file
+    <color name="night_red_primary">#FFFF0000</color>
+    <color name="night_red_variant">#FFBB0000</color>
+    <color name="night_on_red">#FF000000</color>
+    <color name="night_background">#FF000000</color>
+    <color name="night_on_background">#FFFF0000</color>
+    <color name="night_surface">#FF110000</color>
+    <color name="night_on_surface">#FFFF0000</color>
+</resources>
diff --git a/android-app/app/src/main/res/values/strings.xml b/android-app/app/src/main/res/values/strings.xml
index cec4850..499ba8d 100755
--- a/android-app/app/src/main/res/values/strings.xml
+++ b/android-app/app/src/main/res/values/strings.xml
@@ -1,6 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">nav</string>
 
+    <!-- Navigation -->
+    <string name="nav_map">Map</string>
+    <string name="nav_forecast">Forecast</string>
+
     <!-- Instrument Labels -->
     <string name="instrument_label_wind">WIND</string>
     <string name="instrument_label_aws">AWS</string>
@@ -44,4 +49,13 @@
     <string name="anchor_inactive">Anchor Watch Inactive</string>
     <string name="anchor_active_format">Anchor Set at %1$.4f, %2$.4f\nRadius: %3$.1fm\nDistance: %4$.1fm (%5$.1fm from limit)</string>
     <string name="anchor_active_dragging_format">!!! ANCHOR DRAG !!!\nAnchor Set at %1$.4f, %2$.4f\nRadius: %3$.1fm\nDistance: %4$.1fm (%5$.1fm OVER limit)</string>
+
+    <!-- Weather / Forecast Strings -->
+    <string name="loading_weather">Fetching weather…</string>
+    <string name="error_location">Could not get location. Showing default position.</string>
+    <string name="error_weather">Failed to load weather data.</string>
+    <string name="wind_speed_fmt">%.0f kt</string>
+    <string name="temp_fmt">%.0f °C</string>
+    <string name="precip_fmt">%d%%</string>
+    <string name="permission_rationale">Location is needed to show weather for your current position.</string>
 </resources>
diff --git a/android-app/app/src/main/res/values/themes.xml b/android-app/app/src/main/res/values/themes.xml
index 612bba1..abef4b9 100755
--- a/android-app/app/src/main/res/values/themes.xml
+++ b/android-app/app/src/main/res/values/themes.xml
@@ -1,37 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:tools="http://schemas.android.com/tools">
     <!-- Base application theme. -->
     <style name="Theme.Nav" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
-        <!-- Primary brand color. -->
         <item name="colorPrimary">@color/purple_200</item>
         <item name="colorPrimaryVariant">@color/purple_700</item>
         <item name="colorOnPrimary">@color/black</item>
-        <!-- Secondary brand color. -->
         <item name="colorSecondary">@color/teal_200</item>
         <item name="colorSecondaryVariant">@color/teal_200</item>
         <item name="colorOnSecondary">@color/black</item>
-        <!-- Status bar color. -->
         <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
-        <!-- Customize your theme here. -->
+    </style>
+
+    <!-- Maritime theme (weather/forecast features) -->
+    <style name="Theme.NavApp" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <item name="colorPrimary">@color/primary</item>
+        <item name="colorPrimaryDark">@color/primary_dark</item>
+        <item name="colorAccent">@color/accent</item>
+        <item name="android:statusBarColor">@color/primary_dark</item>
     </style>
 
     <!-- Night Vision Theme -->
     <style name="Theme.Nav.NightVision" parent="Theme.MaterialComponents.NoActionBar">
-        <!-- Primary brand color. -->
         <item name="colorPrimary">@color/night_red_primary</item>
         <item name="colorPrimaryVariant">@color/night_red_variant</item>
         <item name="colorOnPrimary">@color/night_on_red</item>
-        <!-- Secondary brand color. -->
         <item name="colorSecondary">@color/night_red_primary</item>
         <item name="colorSecondaryVariant">@color/night_red_variant</item>
         <item name="colorOnSecondary">@color/night_on_red</item>
-        <!-- Background color -->
         <item name="android:colorBackground">@color/night_background</item>
-        <!-- Surface color -->
         <item name="colorSurface">@color/night_surface</item>
         <item name="colorOnSurface">@color/night_on_surface</item>
-        <!-- Status bar color. -->
         <item name="android:statusBarColor" tools:targetApi="l">@color/night_background</item>
-        <!-- Customize your theme here. -->
     </style>
 
     <!-- Instrument Display Styles -->
@@ -62,4 +61,4 @@
         <item name="android:textColor">@color/instrument_text_normal</item>
         <item name="android:textSize">@dimen/text_size_instrument_secondary</item>
     </style>
-</resources>
\ No newline at end of file
+</resources>