feat(ui): restructure instrument sheet layout — inline arrows, WaveView, ocean forecast section

Full layout rewrite: 3×2 GridLayout instrument grid with inline
DirectionArrowView for AWS/TWS/HDG/COG, depth+baro row, animated
WaveView divider, and ocean-blue forecast section for Current/Waves/Swell.

Stubs valueCurrDir/valueWaveDir as nullable in InstrumentHandler
to compile; full handler rewrite follows in Task 6.

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

2 files changed, 6 insertions, 6 deletions

diff --git a/android-app/app/src/main/kotlin/org/terst/nav/MainActivity.kt b/android-app/app/src/main/kotlin/org/terst/nav/MainActivity.kt
index 6197475..023cb94 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/MainActivity.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/MainActivity.kt
@@ -190,9 +190,9 @@ class MainActivity : AppCompatActivity(), SafetyFragment.SafetyListener {
             valueDepth = findViewById(R.id.value_depth),
             valueBaro = findViewById(R.id.value_baro),
             valueCurrSpd = findViewById(R.id.value_curr_spd),
-            valueCurrDir = findViewById(R.id.value_curr_dir),
+            valueCurrDir = null,
             valueWaveHt = findViewById(R.id.value_wave_ht),
-            valueWaveDir = findViewById(R.id.value_wave_dir),
+            valueWaveDir = null,
             valueSwellHt = findViewById(R.id.value_swell_ht),
             valueSwellPer = findViewById(R.id.value_swell_per)
         )
diff --git a/android-app/app/src/main/kotlin/org/terst/nav/ui/InstrumentHandler.kt b/android-app/app/src/main/kotlin/org/terst/nav/ui/InstrumentHandler.kt
index 91582c0..370d8cf 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/ui/InstrumentHandler.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/ui/InstrumentHandler.kt
@@ -15,9 +15,9 @@ class InstrumentHandler(
     private val valueDepth: TextView,
     private val valueBaro: TextView,
     private val valueCurrSpd: TextView,
-    private val valueCurrDir: TextView,
+    private val valueCurrDir: TextView?,
     private val valueWaveHt: TextView,
-    private val valueWaveDir: TextView,
+    private val valueWaveDir: TextView?,
     private val valueSwellHt: TextView,
     private val valueSwellPer: TextView
 ) {
@@ -57,9 +57,9 @@ class InstrumentHandler(
         swellPer: String? = null
     ) {
         currSpd?.let { valueCurrSpd.text = it }
-        currDir?.let { valueCurrDir.text = it }
+        currDir?.let { valueCurrDir?.text = it }
         waveHt?.let { valueWaveHt.text = it }
-        waveDir?.let { valueWaveDir.text = it }
+        waveDir?.let { valueWaveDir?.text = it }
         swellHt?.let { valueSwellHt.text = it }
         swellPer?.let { valueSwellPer.text = it }
     }