Location notes (#482)

* try 1

* works

* equalize UI with ios

* ui cleanup

* geohash chats: no building

* load notes in background

* insta

* simplify and tor icon change

* icons nice

* refactor

* unify location enabled / disabled

* cooler

* simplify, doesnt subscribe right away

* load when clicked

* plus minus location notes

* load when tor is available

* translations

* fix transalations

* implement review comments

app/src/main/java/com/bitchat/android/geohash/Geohash.kt

@@ -115,4 +115,36 @@ object Geohash {
             lonMax = maxOf(lonInterval.first, lonInterval.second)
         )
     }
+
+    /**
+     * Returns the 8 neighboring geohash cells at the same precision as the input.
+     * Neighbors include N, NE, E, SE, S, SW, W, NW, even when crossing parent cell boundaries.
+     */
+    fun neighborsSamePrecision(geohash: String): Set<String> {
+        if (geohash.isEmpty()) return emptySet()
+        val p = geohash.length
+        val b = decodeToBounds(geohash)
+        val dLat = b.latMax - b.latMin
+        val dLon = b.lonMax - b.lonMin
+
+        fun wrapLon(lon: Double): Double {
+            var x = lon
+            while (x > 180.0) x -= 360.0
+            while (x < -180.0) x += 360.0
+            return x
+        }
+
+        val neighbors = mutableSetOf<String>()
+        for (dy in -1..1) {
+            for (dx in -1..1) {
+                if (dx == 0 && dy == 0) continue // skip center
+                val centerLat = (b.latMin + b.latMax) / 2 + dy * dLat
+                val rawLonCenter = (b.lonMin + b.lonMax) / 2 + dx * dLon
+                val centerLon = wrapLon(rawLonCenter)
+                val enc = encode(centerLat.coerceIn(-90.0, 90.0), centerLon, p)
+                if (enc.isNotEmpty() && enc != geohash) neighbors.add(enc)
+            }
+        }
+        return neighbors
+    }
 }

app/src/main/java/com/bitchat/android/geohash/LocationChannel.kt

@@ -5,6 +5,7 @@ package com.bitchat.android.geohash
  * Direct port from iOS implementation for 100% compatibility
  */
 enum class GeohashChannelLevel(val precision: Int, val displayName: String) {
+    BUILDING(8, "Building"), // iOS: precision 8 for building-level (used for Location Notes)
     BLOCK(7, "Block"),
     NEIGHBORHOOD(6, "Neighborhood"),
     CITY(5, "City"),

app/src/main/java/com/bitchat/android/geohash/LocationChannelManager.kt

@@ -88,10 +88,17 @@ class LocationChannelManager private constructor(private val context: Context) {
 
     /**
      * Enable location channels (request permission if needed)
+     * UNIFIED: Only requests location if location services are enabled by user
      */
     fun enableLocationChannels() {
         Log.d(TAG, "enableLocationChannels() called")
         
+        // UNIFIED FIX: Check if location services are enabled by user
+        if (!isLocationServicesEnabled()) {
+            Log.w(TAG, "Location services disabled by user - not requesting location")
+            return
+        }
+        
         when (getCurrentPermissionStatus()) {
             PermissionState.NOT_DETERMINED -> {
                 Log.d(TAG, "Permission not determined - user needs to grant in app settings")