fix: logbook mode display + bottom-sheet dialogs

- displayMode no longer trusts a stale submode for non-MFSK modes: FM/CW/SSB
  records (including ones persisted with the old default submode=FT4) now show
  their real mode; only MODE=MFSK uses the FT4 submode. QsoRecord defaults
  changed mode=MFSK->FM, submode=FT4->''.
- LoTW report bridge sets submode=FT4 for MODE=MFSK so confirmations still
  match local FT4 records.
- Logbook and LoTW upload config dialogs now use SharedDialog (bottom-sheet),
  matching the LoTW confirmed-grids dialog style.

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/logbook/LoTWReportBridge.kt

@@ -14,6 +14,9 @@ fun GridQso.toConfirmedRecord(accountCallsign: String): QsoRecord = QsoRecord(
     band = bandUp,
     rxBand = bandDown,
     mode = mode,
+    // On satellites, MODE=MFSK means FT4 (ADIF pairing); keep the sub-mode so
+    // confirmations match local FT4 records (mode=MFSK, submode=FT4).
+    submode = if (mode.equals("MFSK", true)) "FT4" else "",
     satelliteName = satName,
     propagationMode = "SAT",
     status = QsoStatus.COMPLETE,

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/logbook/QsoConfirmationMerge.kt

@@ -44,7 +44,12 @@ fun QsoRecord.withConfirmation(confirmed: QsoRecord): QsoRecord = copy(
 )
 
 val QsoRecord.displayMode: String
-    get() = submode.ifBlank { mode }.trim().uppercase(Locale.US)
+    get() {
+        // Satellite FT4 is MODE=MFSK + SUBMODE=FT4; any other mode keeps its own
+        // label even when a stale submode default ("FT4") was persisted.
+        val label = if (mode.equals("MFSK", true) && submode.isNotBlank()) submode else mode
+        return label.trim().uppercase(Locale.US)
+    }
 
 val QsoRecord.isSatellite: Boolean
     get() = propagationMode.equals("SAT", true) || (propagationMode.isBlank() && satelliteName.isNotBlank())

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/logbook/QsoModels.kt

@@ -25,8 +25,8 @@ data class QsoRecord(
     val rxFrequencyHz: Long? = null,
     val band: String = "",
     val rxBand: String = "",
-    val mode: String = "MFSK",
-    val submode: String = "FT4",
+    val mode: String = "FM",
+    val submode: String = "",
     val satelliteName: String = "",
     val transponderName: String = "",
     val satelliteMode: String = "",

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/logbook/LogbookMergeTest.kt

@@ -123,4 +123,14 @@ class LogbookMergeTest {
         assertEquals("FT4", ft4.displayMode)
         assertEquals("FM", local.displayMode)
     }
+
+    @Test
+    fun displayMode_ignoresStaleSubmodeForOtherModes() {
+        // Regression: records persisted with the old default submode="FT4" must not
+        // show FT4 when the actual mode is FM/CW/SSB.
+        val staleFm = QsoRecord(startUtcMillis = 0, theirCallsign = "x", myCallsign = "y", mode = "FM", submode = "FT4")
+        val staleCw = QsoRecord(startUtcMillis = 0, theirCallsign = "x", myCallsign = "y", mode = "CW", submode = "FT4")
+        assertEquals("FM", staleFm.displayMode)
+        assertEquals("CW", staleCw.displayMode)
+    }
 }