Merge claude/whats-next-0XCO3: tech debt items 1, 2, 5

- Deleted com.example.androidapp ghost package (18 stale source files)
- Fixed tide model package declarations and HarmonicTideCalculator imports
- Symlinked test-runner TackDetector to android-app canonical source
- Fixed forecast to use current wall-clock hour slot instead of app-start hour

https://claude.ai/code/session_01KXYBuAHZkvv63DeUG6XaZD

5 files changed, 9 insertions, 6 deletions

diff --git a/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideConstituent.kt b/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideConstituent.kt
index deb73d6..34a502c 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideConstituent.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideConstituent.kt
@@ -1,4 +1,4 @@
-package com.example.androidapp.data.model
+package org.terst.nav.data.model
 
 /** A single harmonic tidal constituent used in harmonic tide prediction. */
 data class TideConstituent(
diff --git a/android-app/app/src/main/kotlin/org/terst/nav/data/model/TidePrediction.kt b/android-app/app/src/main/kotlin/org/terst/nav/data/model/TidePrediction.kt
index 51eea44..f6c2b72 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/data/model/TidePrediction.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/data/model/TidePrediction.kt
@@ -1,4 +1,4 @@
-package com.example.androidapp.data.model
+package org.terst.nav.data.model
 
 /** A predicted tide height at a specific point in time. */
 data class TidePrediction(
diff --git a/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideStation.kt b/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideStation.kt
index c9f96a6..4e1238e 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideStation.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/data/model/TideStation.kt
@@ -1,4 +1,4 @@
-package com.example.androidapp.data.model
+package org.terst.nav.data.model
 
 /** A tide station with harmonic constituents for offline tide prediction. */
 data class TideStation(
diff --git a/android-app/app/src/main/kotlin/org/terst/nav/tide/HarmonicTideCalculator.kt b/android-app/app/src/main/kotlin/org/terst/nav/tide/HarmonicTideCalculator.kt
index b1e5652..f0c0ab2 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/tide/HarmonicTideCalculator.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/tide/HarmonicTideCalculator.kt
@@ -1,7 +1,7 @@
 package org.terst.nav.tide
 
-import com.example.androidapp.data.model.TidePrediction
-import com.example.androidapp.data.model.TideStation
+import org.terst.nav.data.model.TidePrediction
+import org.terst.nav.data.model.TideStation
 import kotlin.math.cos
 
 /**
diff --git a/android-app/app/src/main/kotlin/org/terst/nav/ui/MainViewModel.kt b/android-app/app/src/main/kotlin/org/terst/nav/ui/MainViewModel.kt
index 361c8dd..33366f9 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/ui/MainViewModel.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/ui/MainViewModel.kt
@@ -237,7 +237,10 @@ class MainViewModel(
         lastLat = lat; lastLon = lon; lastSog = sogKnots; lastCog = cogDeg
         _currentPosition.value = lat to lon
         val conditions = _marineConditions.value
-        val forecast = _forecast.value.firstOrNull()
+        val nowHourPrefix = java.time.Instant.ofEpochMilli(System.currentTimeMillis())
+            .toString().substring(0, 13) // "2024-01-15T14" — matches Open-Meteo hourly slots
+        val forecast = _forecast.value.find { it.timeIso.startsWith(nowHourPrefix) }
+            ?: _forecast.value.firstOrNull()
         val windDirDeg = conditions?.windDirDeg ?: forecast?.windDirDeg
         val twa = windDirDeg?.let { ((it - cogDeg + 360.0) % 360.0) }
         val point = TrackPoint(