feat(amsat): let the operator choose the day-cell style

Opinion split on the stripes, so Settings > Other now has a switch. On by
default, since the flat tile it replaced hid intra-day outages, which is the
problem the stripes were introduced to solve.

Flat mode is deliberately not the old behaviour. The old cell took its colour
from the first slot with a report and its count from that same slot, so a day
that worked in the morning and failed all afternoon read as "worked" - measured
across eight representative day shapes, two of them had their failure hidden
outright, and the count reported 1 where the day held 24 reports. Flat mode now
takes the day's worst status and the day's total count, so the summary can
understate detail but not hide bad news. The help text says so, in case someone
turns the switch off expecting the tile they remember.

The count is drawn in black or white by relative luminance rather than always
white: on the telemetry amber, white measured 1.83:1 against WCAG's 3:1 for
large text, and that cell does carry a count whenever a day held nothing but
telemetry reports. All six status colours now clear 3:1, the worst being 3.03.

SatStatusViewModel collects the setting rather than reading it once - the switch
is on another screen, so the operator is always elsewhere when they change it
and would otherwise return to the old style.

Strings in all nine locales.

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsScreen.kt

@@ -646,6 +646,16 @@ private fun OtherCard(settings: OtherSettings, onAction: (SettingsAction) -> Uni
                 color = MaterialTheme.colorScheme.onSurfaceVariant
             )
             Spacer(modifier = Modifier.height(4.dp))
+            // AMSAT status: twelve two-hour stripes per day, or one colour for the day
+            SwitchRow(R.string.prefs_other_switch_amsat_stripes, settings.amsatDayStripes) {
+                onAction(SettingsAction.ToggleAmsatDayStripes(it))
+            }
+            Text(
+                text = stringResource(id = R.string.prefs_other_amsat_stripes_help),
+                fontSize = 12.sp,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+            Spacer(modifier = Modifier.height(4.dp))
             // Compass calibration sliders at the bottom
             CompassOffsetRow(
                 labelResId = R.string.prefs_other_compass_offset,

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsState.kt

@@ -64,6 +64,7 @@ sealed interface SettingsAction {
 
     /** Shift CW tones outside the model's 400-1200 Hz window into it before decoding. */
     data class ToggleCwToneShift(val value: Boolean) : SettingsAction
+    data class ToggleAmsatDayStripes(val value: Boolean) : SettingsAction
     data class ToggleSweep(val value: Boolean) : SettingsAction
     data class ToggleSensor(val value: Boolean) : SettingsAction
     data class ToggleLightTheme(val value: Boolean) : SettingsAction

feature/settings/src/main/java/com/rtbishop/look4sat/feature/settings/SettingsViewModel.kt

@@ -128,6 +128,7 @@ class SettingsViewModel(
             is SettingsAction.ToggleUtc -> settingsRepo.updateOtherSettings { it.copy(stateOfUtc = action.value) }
             is SettingsAction.ToggleUpdate -> settingsRepo.updateOtherSettings { it.copy(stateOfAutoUpdate = action.value) }
             is SettingsAction.ToggleCwToneShift -> settingsRepo.updateOtherSettings { it.copy(cwToneShiftEnabled = action.value) }
+            is SettingsAction.ToggleAmsatDayStripes -> settingsRepo.updateOtherSettings { it.copy(amsatDayStripes = action.value) }
             is SettingsAction.ToggleSweep -> settingsRepo.updateOtherSettings { it.copy(stateOfSweep = action.value) }
             is SettingsAction.ToggleSensor -> settingsRepo.updateOtherSettings { it.copy(stateOfSensors = action.value) }
             is SettingsAction.ToggleLightTheme -> settingsRepo.updateOtherSettings { it.copy(stateOfLightTheme = action.value) }