build: release version 4.4.8-ba7opf.11.8 (583)

Android 7+ 按脚本解析中文：无限定符的 values-zh 视为 zh-Hans，zh-TW/zh-HK/zh-MO（zh-Hant）
设备匹配不到它、掉到默认英文。新增 values-b+zh+Hant（values-zh 逐字副本，非新译文），并把
zh-rTW/zh-rHK/zh-rMO 补进 localeFilters——否则 aapt2 会把该配置从 APK 里裁掉，修复静默失效
（这也解释了 AndroidX 自带繁体资源为何一直不出现）。aapt2 只接受 zh-rTW 写法，zh-Hant 会
构建报错。加 TraditionalChineseFallbackTest 钉死两份文案一致与 filter 内容。

build-logic/convention/src/main/java/com/rtbishop/look4sat/convention/PluginSetupUtils.kt

@@ -74,7 +74,13 @@ internal fun Project.setupAndroidApp() {
         }
         androidResources {
             generateLocaleConfig = true
-            localeFilters.addAll(listOf("en", "es", "ru", "si", "tr", "uk", "zh"))
+            // "zh" alone is stripped down to the Hans config: without the Traditional
+            // region entries below, values-b+zh+Hant is filtered out of the APK and a
+            // zh-TW / zh-HK / zh-MO device falls back to English. aapt2 only accepts
+            // the legacy "zh-rTW" spelling here ("zh-Hant" fails the build).
+            localeFilters.addAll(
+                listOf("en", "es", "ru", "si", "tr", "uk", "zh", "zh-rTW", "zh-rHK", "zh-rMO")
+            )
         }
         packaging { resources { excludes += listOf("META-INF/*") } }
     }

core/data/src/main/java/com/rtbishop/look4sat/core/data/lotw/LoTWConfig.kt

@@ -36,7 +36,7 @@ import java.util.Locale
 import java.util.zip.GZIPInputStream
 import javax.xml.parsers.DocumentBuilderFactory
 
-/** Bundled ARRL configuration 11.34 from https://lotw.arrl.org/lotw/config.tq6. */
+/** Bundled ARRL configuration 11.35 from https://lotw.arrl.org/lotw/config.tq6. */
 internal class LoTWConfig(input: InputStream) {
     private val root = input.use { source -> GZIPInputStream(source).use { gzip ->
         val xml = gzip.bufferedReader(Charsets.UTF_8).readText()

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SelectionRepo.kt

@@ -66,8 +66,17 @@ class SelectionRepo(
         }
     }
 
+    // Selected satellites are pinned to the top (matches upstream); ordering
+    // within each group stays name/catnum. Sits on the reactive chain, so
+    // ticking an entry re-sorts the visible list immediately.
     private val itemsWithQuery = currentQuery.flatMapLatest { query ->
-        itemsWithTypes.map { items -> filterByQuery(items, query) }
+        itemsWithTypes.map { items ->
+            filterByQuery(items, query).sortedWith(
+                compareByDescending<SatItem> { it.isSelected }
+                    .thenBy { it.name }
+                    .thenBy { it.catnum }
+            )
+        }
     }
 
     override fun getCurrentTypes() = currentTypes.value

core/data/src/test/java/com/rtbishop/look4sat/core/data/lotw/LoTWConfigTest.kt

@@ -87,6 +87,7 @@ class LoTWConfigTest {
         assertEquals("AO-91", config.resolveSatellite("FOX-1B"))
         assertEquals("IO-86", config.resolveSatellite("LAPAN-A2"))
         assertEquals("RS-44", config.resolveSatellite("DOSAAF-85"))
+        assertEquals("RS95S", config.resolveSatellite("QMR-KWT 2"))
         assertEquals("BO-102", config.resolveSatellite("CAS-7B"))
         assertEquals("SO-50", config.resolveSatellite("SO-50"))
     }

core/data/src/test/java/com/rtbishop/look4sat/core/data/repository/SelectionRepoSearchTest.kt

@@ -124,6 +124,24 @@ class SelectionRepoSearchTest {
         assertEquals(setOf(25544, 61781), results.map { it.catnum }.toSet())
     }
 
+    @Test
+    fun `FM virtual type includes the BA7OPF RS95S UNNE-1B and IO-86 additions`() = runTest {
+        // RS95S / QMR-KWT-2 (67291), UNNE-1B (98205) and IO-86 / LAPAN-A2 (40931)
+        // joined the hardcoded AMSAT Live FM set on 2026-10-09; each carries a V/U
+        // FM repeater in SatNOGS ("V/U FM Transponder CTCSS 67.0 Hz",
+        // "Mode V/U - FM Repeater (Voice + (A)FSK)", "V/U FM Voice (PL 88.5Hz)").
+        // sampleItems contributes ISS (25544) only.
+        val items = sampleItems + listOf(
+            SatItem(catnum = 67291, name = "QMR-KWT-2 (RS95S)"),
+            SatItem(catnum = 98205, name = "UNNE-1B"),
+            SatItem(catnum = 40931, name = "LAPAN-A2 (IO-86)")
+        )
+        val repo = createRepo(items)
+        repo.setTypes(listOf("AMSAT Live FM"))
+        val results = repo.getEntriesFlow().first()
+        assertEquals(setOf(25544, 67291, 98205, 40931), results.map { it.catnum }.toSet())
+    }
+
     @Test
     fun `Linear virtual type shows only hardcoded linear satellites`() = runTest {
         val repo = createRepo(sampleItems)
@@ -284,6 +302,24 @@ class SelectionRepoSearchTest {
         assertEquals(sampleItems.map { it.catnum }.toSet(), results.map { it.catnum }.toSet())
     }
 
+    @Test
+    fun `selected satellites are shown first`() = runTest {
+        // Pinning ported from upstream: ticked satellites sort above the rest,
+        // each group keeping the name order.
+        val repo = createRepo(
+            items = listOf(
+                SatItem(catnum = 44444, name = "Zeta"),
+                SatItem(catnum = 25544, name = "Alpha"),
+                SatItem(catnum = 40967, name = "Beta")
+            )
+        )
+        val flow = repo.getEntriesFlow()
+        repo.setSelection(listOf(40967), true)
+        val results = flow.first()
+        assertEquals(listOf(40967, 25544, 44444), results.map { it.catnum })
+        assertEquals(listOf(true, false, false), results.map { it.isSelected })
+    }
+
     private fun createRepo(
         items: List<SatItem>,
         sstvIds: List<Int> = emptyList()

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

@@ -14,9 +14,15 @@ import java.util.Date
 import java.util.Locale
 import java.util.TimeZone
 
-/** Small ADI codec for the logbook's actual field set (ADIF 3.1.7). */
+/**
+ * Small ADI codec for the logbook's actual field set (ADIF 3.1.7).
+ *
+ * Grid directions follow ADIF: the un-prefixed fields (GRIDSQUARE, VUCC_GRIDS) belong to
+ * the OPPOSITE station, the MY_* fields (MY_GRIDSQUARE, MY_VUCC_GRIDS) to the operator.
+ */
 object AdifCodec {
     private val utc = TimeZone.getTimeZone("UTC")
+    private val gridPattern = Regex("[A-R]{2}[0-9]{2}([A-X]{2}([0-9]{2})?)?")
 
     fun encode(records: List<QsoRecord>, includeStationCallsign: Boolean = true): String = buildString {
         append(field("ADIF_VER", "3.1.7"))
@@ -36,7 +42,17 @@ object AdifCodec {
             appendOptional("MODE", record.mode)
             appendOptional("SUBMODE", record.submode)
             appendOptional("GRIDSQUARE", record.theirGrid)
+            // The OPPOSITE station's multi-grid set (2+ grids: a grid line or corner).
+            // A single grid is carried by GRIDSQUARE; one value inside the VUCC field
+            // makes Wavelog flag the record in its QSO view.
+            if (record.theirVuccGrids.size > 1) {
+                appendOptional("VUCC_GRIDS", record.theirVuccGrids.joinToString(","))
+            }
             appendOptional("MY_GRIDSQUARE", record.myGrid)
+            // The grid set this qso went out under (own operated grids, stamped at
+            // upload). ADIF's MY_VUCC_GRIDS is its home — not VUCC_GRIDS, which belongs
+            // to the opposite station and drives Wavelog's grid/distance/QRB display.
+            appendOptional("MY_VUCC_GRIDS", record.vuccGrids.joinToString(","))
             appendOptional("RST_SENT", record.sentReport)
             appendOptional("RST_RCVD", record.receivedReport)
             record.txFrequencyHz?.let { append(field("FREQ", hzToMhz(it))) }
@@ -49,7 +65,6 @@ object AdifCodec {
             if (record.lotwConfirmed) append(field("LOTW_QSL_RCVD", "Y"))
             if (record.lotwReceived) append(field("LOTW_QSL_SENT", "Y"))
             appendOptional("LOTW_QSLRDATE", record.lotwQslDate)
-            appendOptional("VUCC_GRIDS", record.vuccGrids.joinToString(","))
             record.dxcc?.let { append(field("DXCC", it.toString())) }
             appendOptional("COUNTRY", record.country)
             record.cqZone?.let { append(field("CQZ", it.toString())) }
@@ -80,7 +95,9 @@ object AdifCodec {
             theirCallsign = call,
             myCallsign = values["STATION_CALLSIGN"].orEmpty().uppercase(Locale.US),
             theirGrid = values["GRIDSQUARE"].orEmpty().uppercase(Locale.US),
+            theirVuccGrids = decodeGrids(values["VUCC_GRIDS"]),
             myGrid = values["MY_GRIDSQUARE"].orEmpty().uppercase(Locale.US),
+            vuccGrids = decodeGrids(values["MY_VUCC_GRIDS"]),
             sentReport = values["RST_SENT"].orEmpty(),
             receivedReport = values["RST_RCVD"].orEmpty(),
             txFrequencyHz = mhzToHz(values["FREQ"]),
@@ -100,8 +117,6 @@ object AdifCodec {
             lotwConfirmed = values["LOTW_QSL_RCVD"].equals("Y", true),
             lotwReceived = values["LOTW_QSL_SENT"].equals("Y", true),
             lotwQslDate = values["LOTW_QSLRDATE"].orEmpty(),
-            vuccGrids = values["VUCC_GRIDS"].orEmpty().split(',').map { it.trim().uppercase(Locale.US) }
-                .filter { it.matches(Regex("[A-R]{2}[0-9]{2}([A-X]{2}([0-9]{2})?)?")) }.distinct(),
             dxcc = values["DXCC"]?.toIntOrNull(),
             country = values["COUNTRY"].orEmpty(),
             cqZone = values["CQZ"]?.toIntOrNull()?.takeIf { it in 1..40 },
@@ -140,6 +155,12 @@ object AdifCodec {
         return records
     }
 
+    /** Splits an ADIF grid list on commas, keeping only valid 4/6/8-char locators. */
+    private fun decodeGrids(value: String?): List<String> = value.orEmpty().split(',')
+        .map { it.trim().uppercase(Locale.US) }
+        .filter { it.matches(gridPattern) }
+        .distinct()
+
     private fun StringBuilder.appendOptional(name: String, value: String) {
         if (value.isNotBlank()) append(field(name, value))
     }

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

@@ -34,6 +34,8 @@ import java.util.Locale
  *  - live SatNOGS 3LE names and Celestrak amateur names joined to the same NORAD id,
  *  - designator tokens of the config.tq6 satellite descriptions (e.g. CAS-7B -> BO-102),
  *  - the ISS family, which SatNOGS does not list under its ARRL name "ARISS".
+ * Added 2026-10-08: config.tq6 v11.35 lists QMR-KWT 2 as "RS95S"; SatNOGS DB carries it as
+ * "QMR-KWT 2" (alias "RS95S") and other sources spell it "RS-95S", hence the identity entry.
  * Placeholder names ("OBJECT AY" and friends) are deliberately NOT mapped: they are recycled
  * between objects and would sign the wrong satellite. LoTWConfigTest asserts that every target
  * here is a real config.tq6 name.
@@ -79,11 +81,11 @@ object LoTWSatelliteAliases {
         "OSCAR16PACSAT" to "AO-16", "OSCAR19LUSAT" to "LO-19", "OSCAR64" to "DO-64",
         "OSCAR7" to "AO-7", "PACSAT" to "AO-16", "PARKINSONSAT" to "NO-84",
         "PCSAT" to "NO-44", "PHILLIPINESOSCAR101" to "PO-101", "PO101" to "PO-101",
-        "PSAT" to "NO-84", "PSAT2" to "NO-104", "QB50P1" to "EO-79",
+        "PSAT" to "NO-84", "PSAT2" to "NO-104", "QB50P1" to "EO-79", "QMRKWT2" to "RS95S",
         "QO100" to "QO-100", "RADFXSAT" to "AO-91", "RADIOROSTO" to "RS-15",
         "RS0ISS" to "ARISS", "RS14" to "AO-21", "RS15" to "RS-15",
-        "RS44" to "RS-44", "RS64S" to "AO-123", "SAUDISAT1C" to "SO-50",
-        "SO121" to "SO-121", "SO124" to "SO-124", "SO125" to "SO-125",
+        "RS44" to "RS-44", "RS64S" to "AO-123", "RS95S" to "RS95S",
+        "SAUDISAT1C" to "SO-50", "SO121" to "SO-121", "SO124" to "SO-124", "SO125" to "SO-125",
         "SO50" to "SO-50", "SOLUTUSNANOSATTELITE" to "SONATE", "SONATE2" to "SONATE",
         "TAURUS1" to "TAURUS", "TEVEL21" to "TEV2-1", "TEVEL22" to "TEV2-2",
         "TEVEL23" to "TEV2-3", "TEVEL24" to "TEV2-4", "TEVEL25" to "TEV2-5",

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

@@ -48,6 +48,8 @@ data class QsoRecord(
     val wavelogStation: String = "",
     val lotwReceived: Boolean = false,
     val lotwQslDate: String = "",
+    /** Own operated grid set this QSO went out under — uploaded as ADIF MY_VUCC_GRIDS
+     *  (never VUCC_GRIDS, which belongs to the opposite station). Stamped at upload. */
     val vuccGrids: List<String> = emptyList(),
     val dxcc: Int? = null,
     val country: String = "",

core/domain/src/main/java/com/rtbishop/look4sat/core/domain/source/Sources.kt

@@ -50,11 +50,30 @@ object Sources {
     )
     /**
      * Hardcoded AMSAT Live FM satellites (NORAD catnums):
-     * SO-50 (27607), ISS ZARYA (25544), AO-123 ASRTU-1 (61781).
+     * SO-50 (27607), ISS ZARYA (25544), AO-123 ASRTU-1 (61781),
+     * RS95S/QMR-KWT-2 (67291), UNNE-1B (98205).
      * Replaces the AMSAT live-page fetch: stable on any network, no
      * sync-time dependency, no stale-list or timeout failure modes.
+     *
+     * BA7OPF additions (2026-10-09):
+     *  - RS95S / QMR-KWT-2 (67291): V/U FM transponder 145.920/436.950 CTCSS 67.0
+     *    (SatNOGS "QMR-KWT-2 (RS95S)", R4UAB "QMR-KWT-2 (RS95S)", AMSAT "RS95S
+     *    (QMR-KWT-2)"; the LoTW alias table maps the tracker name to ARRL's "RS95S").
+     *  - UNNE-1B (98205): AMSAT-EA 1.5P PocketQube released from the T-18 OTV
+     *    "OSSIE" with a V/U FM repeater ("Voice + (A)FSK").
+     *  - IO-86 / LAPAN-A2 (40931): V/U FM voice repeater 145.880/435.880 PL 88.5
+     *    (SatNOGS "V/U FM Voice (PL 88.5Hz)"; R4UAB "LAPAN-A2 (IO-86)", SatNOGS
+     *    3LE "LAPAN-A2", AMSAT "IO-86"; the LoTW alias table maps LAPAN-A2 to
+     *    ARRL's "IO-86"). This fork's first TLE source keeps its elements fresh.
+     *  ⚠ 98205 is SatNOGS' analysis number (designator 26227BL) for the freshly
+     *    released object — Space-Track assigns the permanent catalogue number later,
+     *    so this entry must be re-pointed then; the ephem-watch cron job tracks it.
+     *
+     * The set is shared: the satellite page / mutual page "AMSAT Live FM" filters
+     * and the radar Log page (FM satellites are logged on the fixed nominal
+     * voice-repeater pair).
      */
-    val amSatFmCatnums = setOf(27607, 25544, 61781)
+    val amSatFmCatnums = setOf(27607, 25544, 61781, 67291, 98205, 40931)
 
     /**
      * Hardcoded AMSAT Live linear (SSB/CW) satellites:

core/domain/src/test/java/com/rtbishop/look4sat/core/domain/LoTWSatelliteAliasesTest.kt

@@ -27,7 +27,7 @@ import org.junit.Test
 /** Alias table that maps tracker catalogue names onto the names ARRL's config.tq6 uses. */
 class LoTWSatelliteAliasesTest {
 
-    private val catalogue = listOf("SO-50", "ARISS", "PO-101", "BO-102", "AO-91", "RS-44", "IO-117")
+    private val catalogue = listOf("SO-50", "ARISS", "PO-101", "BO-102", "AO-91", "RS-44", "IO-117", "RS95S")
 
     @Test
     fun `lookup maps SatNOGS catalogue names to ARRL names`() {
@@ -37,6 +37,7 @@ class LoTWSatelliteAliasesTest {
         assertEquals("AO-91", LoTWSatelliteAliases.lookup("FOX-1B"))
         assertEquals("RS-44", LoTWSatelliteAliases.lookup("DOSAAF-85"))
         assertEquals("IO-117", LoTWSatelliteAliases.lookup("GREENCUBE"))
+        assertEquals("RS95S", LoTWSatelliteAliases.lookup("QMR-KWT 2"))
     }
 
     @Test
@@ -59,6 +60,8 @@ class LoTWSatelliteAliasesTest {
         assertEquals("SO-50", LoTWSatelliteAliases.resolve("SAUDISAT 1C (SO-50)", catalogue))
         assertEquals("ARISS", LoTWSatelliteAliases.resolve("ISS (ZARYA)", catalogue))
         assertEquals("AO-91", LoTWSatelliteAliases.resolve("AO-91 (RadFxSat)", catalogue))
+        assertEquals("RS95S", LoTWSatelliteAliases.resolve("RS-95S", catalogue))
+        assertEquals("RS95S", LoTWSatelliteAliases.resolve("QMR-KWT 2", catalogue))
     }
 
     @Test

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

@@ -10,6 +10,7 @@
 package com.rtbishop.look4sat.core.domain.logbook
 
 import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
 import org.junit.Assert.assertTrue
 import org.junit.Test
 
@@ -22,8 +23,10 @@ class AdifCodecTest {
             endUtcMillis = 1_700_000_000_100L,
             theirCallsign = "BG5JVM",
             myCallsign = "BA7OPF",
-            theirGrid = "OM60",
+            theirGrid = "EN52",
+            theirVuccGrids = listOf("EN52", "EN53"),
             myGrid = "OL62TI",
+            vuccGrids = listOf("OL62", "OL61"),
             sentReport = "59",
             receivedReport = "59",
             txFrequencyHz = 145_850_000L,
@@ -36,8 +39,7 @@ class AdifCodecTest {
             propagationMode = "SAT",
             status = QsoStatus.COMPLETE,
             lotwConfirmed = true,
-            lotwQslDate = "2026-09-20",
-            vuccGrids = listOf("OM60", "OM50")
+            lotwQslDate = "2026-09-20"
         )
         val decoded = AdifCodec.decode(AdifCodec.encode(listOf(record))).single()
         assertEquals(record.startUtcMillis, decoded.startUtcMillis)
@@ -47,12 +49,18 @@ class AdifCodecTest {
         assertEquals("2M", decoded.band)
         assertEquals("70CM", decoded.rxBand)
         assertTrue(decoded.lotwConfirmed)
-        assertEquals(listOf("OM60", "OM50"), decoded.vuccGrids)
+        // Grid directions survive a round trip: the opposite's set stays theirs,
+        // the operator's own set stays theirs.
+        assertEquals("EN52", decoded.theirGrid)
+        assertEquals(listOf("EN52", "EN53"), decoded.theirVuccGrids)
+        assertEquals("OL62TI", decoded.myGrid)
+        assertEquals(listOf("OL62", "OL61"), decoded.vuccGrids)
     }
 
     @Test
     fun decode_lotwStyleReportFields() {
-        // LoTW report subset: lowercase eor, alphabetical fields, VUCC_GRIDS list.
+        // LoTW report subset: lowercase eor, alphabetical fields. The un-prefixed
+        // grid fields belong to the OPPOSITE station, MY_* fields to the operator.
         val adi = """
             <EOH>
             <CALL:6>BH6RJD
@@ -64,8 +72,9 @@ class AdifCodecTest {
             <BAND:3>2M
             <BAND_RX:4>70CM
             <GRIDSQUARE:4>OM60
-            <MY_GRIDSQUARE:8>OM60IL70
             <VUCC_GRIDS:9>OM60,OM50
+            <MY_GRIDSQUARE:6>OL62TI
+            <MY_VUCC_GRIDS:9>OL62,OL61
             <STATION_CALLSIGN:6>BH6RJD
             <DXCC:3>318
             <COUNTRY:5>China
@@ -78,12 +87,27 @@ class AdifCodecTest {
         assertEquals("BH6RJD", record.theirCallsign)
         assertEquals("SO-50", record.satelliteName)
         assertEquals("FM", record.displayMode)
-        assertEquals("OM60IL70", record.myGrid)
-        assertEquals(listOf("OM60", "OM50"), record.vuccGrids)
+        assertEquals("OM60", record.theirGrid)
+        assertEquals(listOf("OM60", "OM50"), record.theirVuccGrids)
+        assertEquals("OL62TI", record.myGrid)
+        assertEquals(listOf("OL62", "OL61"), record.vuccGrids)
         assertTrue(record.lotwConfirmed)
         assertTrue(record.isSatellite)
     }
 
+    @Test
+    fun decodeWavelogPullStyleRecordKeepsGridDirections() {
+        // Wavelog's export: the OPPOSITE station's grids un-prefixed, the station
+        // profile's grid under MY_*. A pull must not flip them into each other.
+        val adi = "<EOH><CALL:6>BG5JVM<QSO_DATE:8>20260916<TIME_ON:4>0745" +
+            "<VUCC_GRIDS:9>EN52,EN53<MY_GRIDSQUARE:6>OL62TI<MY_VUCC_GRIDS:9>OL62,OL61" +
+            "<MODE:2>FM<PROP_MODE:3>SAT<SAT_NAME:5>SO-50<EOR>"
+        val record = AdifCodec.decode(adi).single()
+        assertEquals(listOf("EN52", "EN53"), record.theirVuccGrids)
+        assertEquals("OL62TI", record.myGrid)
+        assertEquals(listOf("OL62", "OL61"), record.vuccGrids)
+    }
+
     @Test
     fun encodeOmitsStationCallsignForWavelog() {
         val record = QsoRecord(
@@ -99,4 +123,44 @@ class AdifCodecTest {
         assertTrue(adif.contains("<CALL:6>N0CALL"))
         assertTrue(adif.contains("<SAT_NAME:5>SO-50"))
     }
+
+    @Test
+    fun encodeKeepsOwnGridsOutOfTheOppositeVuccField() {
+        // The reported defect: an operator's stamped own grid set must never land in
+        // VUCC_GRIDS — Wavelog displays that field as the OPPOSITE station's grid.
+        val record = QsoRecord(
+            startUtcMillis = 1_700_000_000_000L,
+            theirCallsign = "N0CALL",
+            myCallsign = "BA7OPF",
+            myGrid = "OL62TI",
+            vuccGrids = listOf("OL62"),
+            satelliteName = "SO-50"
+        )
+        val adif = AdifCodec.encode(listOf(record), includeStationCallsign = false)
+        assertTrue(adif.contains("<MY_VUCC_GRIDS:4>OL62"))
+        assertFalse(adif.contains("<VUCC_GRIDS:"))
+        assertFalse(adif.contains("<GRIDSQUARE:"))
+    }
+
+    @Test
+    fun encodeWritesTheOppositeMultiGridSetToVuccGrids() {
+        val multi = QsoRecord(
+            startUtcMillis = 1_700_000_000_000L,
+            theirCallsign = "N0CALL",
+            myCallsign = "BA7OPF",
+            theirGrid = "EN52",
+            theirVuccGrids = listOf("EN52", "EN53"),
+            satelliteName = "SO-50"
+        )
+        val multiAdif = AdifCodec.encode(listOf(multi), false)
+        assertTrue(multiAdif.contains("<GRIDSQUARE:4>EN52"))
+        assertTrue(multiAdif.contains("<VUCC_GRIDS:9>EN52,EN53"))
+
+        // A single opposite grid rides in GRIDSQUARE only; one value inside the VUCC
+        // field would trigger Wavelog's single-grid warning in its QSO view.
+        val single = multi.copy(theirVuccGrids = listOf("EN52"))
+        val singleAdif = AdifCodec.encode(listOf(single), false)
+        assertTrue(singleAdif.contains("<GRIDSQUARE:4>EN52"))
+        assertFalse(singleAdif.contains("<VUCC_GRIDS:"))
+    }
 }

core/presentation/src/main/res/values-b+zh+Hant/strings.xml

@@ -0,0 +1,529 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!--
+        Traditional-Chinese (zh-Hant) devices fall back to the Simplified Chinese
+        strings in values-zh/ instead of the English default. Android 7+ resolves
+        Chinese by script, so an unqualified values-zh is treated as zh-Hans and is
+        never matched by a zh-TW / zh-HK / zh-MO (Hant) device.
+
+        This file is a verbatim copy of values-zh/strings.xml — do NOT translate it
+        here. Edit values-zh/strings.xml and copy the change over; the unit test
+        TraditionalChineseFallbackTest fails if the two files ever diverge.
+    -->
+    <!-- Commmon -->
+    <string name="btn_accept">确定</string>
+    <string name="btn_cancel">取消</string>
+    <string name="empty_list_message">没有数据可显示</string>
+
+    <!-- Navigation -->
+    <string name="nav_sat">卫星</string>
+    <string name="nav_pass">过境</string>
+    <string name="nav_radar">雷达</string>
+    <string name="nav_mutual">匹配</string>
+    <string name="nav_map">地图</string>
+    <string name="nav_prefs">设置</string>
+
+    <!-- Satellites screen -->
+    <string name="sat_type_hint">类型：%s</string>
+    <string name="sat_type_title">选择卫星类型</string>
+    <string name="sat_search_hint">Id - 名称</string>
+    <string name="sat_search_clear">清空</string>
+    <string name="sat_clear_all">全部清空</string>
+    <string name="sat_select_all">全选</string>
+    <string name="sat_group_selected">已选择</string>
+    <string name="sat_group_available">可用</string>
+    <string name="sat_group_selected_count">已选择（%1$d）</string>
+    <string name="sat_group_available_count">可用（%1$d）</string>
+    <string name="sat_empty_list_message">请确保您的搜索查询正确且数据库已更新</string>
+    <string name="sat_warning_title">警告\!</string>
+    <string name="sat_warning_message">此应用收录了超过9000颗卫星信息\n同时追踪所有卫星并不现实\n建议始终通过搜索和分类筛选功能仅勾选您感兴趣的卫星</string>
+
+    <!-- Passes screen -->
+    <string name="pass_filter_title">筛选过境</string>
+    <string name="pass_filter_elev">仰角值</string>
+    <string name="pass_filter_hours">提前时间</string>
+    <string name="pass_filter_history_hours">历史过境时间</string>
+    <string name="pass_filter_aos_time">AOS 时间段</string>
+    <string name="pass_filter_invert_time">反选 AOS 时间段</string>
+    <string name="pass_filter_deep_space">DeepSpace（周期 &gt;225分钟）</string>
+    <string name="pass_modes_title">选择调制类型</string>
+    <string name="pass_elevation">仰角：%.1f°</string>
+    <string name="pass_altitude">高度：%d km</string>
+    <string name="pass_empty_list_message">请确保您的过滤器设置正确，并且已选择卫星</string>
+    <string name="pass_error_message">没有即将过境的卫星</string>
+    <string name="pass_welcome_title">欢迎来到 Look4Sat\!</string>
+    <string name="pass_welcome_message">请务必在设置中通过GPS、经纬度或QTH定位您的位置\n建议至少每周更新一次数据库，以确保预测结果的准确性</string>
+
+    <!-- AMSAT Status screen -->
+
+<string name="nav_amsat">AMSAT</string>
+    <string name="amsat_title">AMSAT 卫星状态</string>
+    <string name="amsat_refresh">刷新</string>
+    <string name="amsat_retry">重试</string>
+    <string name="amsat_updated">更新于：</string>
+    <string name="amsat_active">活跃</string>
+    <string name="amsat_tlm">遥测/信标</string>
+    <string name="amsat_not_heard">未听到</string>
+    <string name="amsat_conflict">冲突</string>
+    <string name="amsat_name">名称</string>
+    <string name="amsat_load_failed">加载失败 - 检查网络后重试</string>
+    <string name="amsat_no_reports">此时间段无报告</string>
+    <string name="amsat_close">关闭</string>
+    <string name="amsat_upload">上传</string>
+    <string name="amsat_upload_back">返回</string>
+    <string name="amsat_upload_report">上传报告到 AMSAT</string>
+    <string name="amsat_upload_status">状态</string>
+    <string name="amsat_upload_callsign">呼号</string>
+    <string name="amsat_upload_grid">网格</string>
+    <string name="amsat_upload_time_now">时间：当前 UTC %s</string>
+    <string name="amsat_upload_submit">提交到 AMSAT</string>
+    <string name="amsat_upload_confirm">确认上传</string>
+    <string name="amsat_upload_confirm_title">确认上传到 AMSAT</string>
+    <string name="amsat_upload_confirm_message">这条公开报告将上传到 AMSAT。\n卫星：%1$s\n状态：%2$s\n呼号：%3$s\n网格：%4$s</string>
+    <string name="amsat_upload_grid_none">未填写</string>
+    <string name="amsat_upload_success">报告已上传</string>
+    <string name="amsat_upload_failed">上传失败：%s</string>
+    <string name="amsat_upload_callsign_required">请填写呼号</string>
+    <string name="amsat_upload_grid_invalid">网格应为 4 或 6 位 Maidenhead 定位符</string>
+    <string name="amsat_upload_active">活跃</string>
+    <string name="amsat_upload_tlm">遥测/信标</string>
+    <string name="amsat_upload_not_heard">未听到</string>
+    <string name="amsat_upload_crew_active">ISS 语音</string>
+
+    <!-- Radar screen -->
+    <string name="radar_back">后退</string>
+    <string name="radar_notify">通知</string>
+    <string name="radar_az_text">方位角</string>
+    <string name="radar_el_text">仰角</string>
+    <string name="radar_alt_text">高度</string>
+    <string name="radar_dist_text">距离</string>
+    <string name="radar_eclipsed">地影中</string>
+    <string name="radar_downlink">下行链路</string>
+    <string name="radar_uplink">上行链路</string>
+    <string name="radar_no_data">这颗卫星没有收发器</string>
+    <string name="radar_add">添加</string>
+    <string name="radar_data">卫星收发器：</string>
+    <string name="radar_inverted">倒置：%s</string>
+    <string name="radar_mode">调制：%s</string>
+    <string name="radar_string_no">否</string>
+    <string name="radar_string_yes">是</string>
+    <string name="radar_visible">日照中</string>
+
+    <string name="radar_doppler_calc">多普勒频率计算器</string>
+    <string name="radar_doppler_tx_hint">输入上行频率 (MHz)</string>
+    <string name="radar_doppler_rx_hint">输入下行频率 (MHz)</string>
+    <string name="radar_doppler_offset_hint">偏移 (kHz)</string>
+    <string name="radar_doppler_info">线性转发器：输入一个频率即可算出另一个</string>
+
+    <string name="radar_cw_decoder">CW 解码器</string>
+    <string name="radar_cw_start">开始</string>
+    <string name="radar_cw_stop">停止</string>
+    <string name="radar_cw_reset">清空</string>
+
+    <!-- Map screen -->
+    <string name="map_prev">上一个</string>
+    <string name="map_next">下一个</string>
+    <string name="map_grid_mode">网格模式</string>
+    <string name="map_satellite_mode">卫星模式</string>
+    <string name="map_first_call_mode">首通呼号</string>
+    <string name="map_azimuth">方位角：%.1f°</string>
+    <string name="map_elevation">仰角：%.1f°</string>
+    <string name="map_altitude">高度：%.0f km</string>
+    <string name="map_distance">距离：%.0f km</string>
+    <string name="map_latitude">纬度：%.1f°</string>
+    <string name="map_longitude">经度：%.1f°</string>
+    <string name="map_phase">相位：%.1f°</string>
+    <string name="map_eclipsed">地影中</string>
+    <string name="map_period">周期：% .0f min</string>
+    <string name="map_velocity">速度：%.2f km/s</string>
+    <string name="map_visibility">能见度：%s</string>
+    <!-- Worked-grid QSO dialog -->
+    <string name="grid_qso_calls_count" formatted="false">%d 个呼号 · %d 次通联</string>
+    <string name="region_qso_empty">该区域暂无已确认通联</string>
+    <string name="grid_qso_count_one">%d QSO</string>
+    <string name="grid_qso_count_many">%d QSOs</string>
+    <string name="grid_qso_first">首通</string>
+    <string name="grid_qso_no_sat">卫星未知</string>
+    <string name="grid_qso_match">匹配</string>
+    <!-- 未通联网格中的“标记想通联的电台”提醒 -->
+    <string name="grid_mark_station">标记你想通联的电台</string>
+    <string name="grid_mark_callsign">呼号</string>
+    <string name="grid_mark_confirm">标记</string>
+    <string name="grid_mark_label">标记</string>
+    <string name="grid_mark_delete">删除标记</string>
+    <string name="grid_mark_pin">置顶</string>
+    <string name="map_visible">日照中</string>
+
+    <!-- Settings screen -->
+    <string name="prefs_privacy_title">隐私政策</string>
+
+    <string name="prefs_updated_title">更新：%s</string>
+    <string name="prefs_updated_time">yyyy年M月d日 HH:mm:ss</string>
+
+    <string name="prefs_loc_title">站点位置</string>
+    <string name="prefs_loc_gps_title">GPS 定位</string>
+    <string name="prefs_loc_gps_error">检查您的位置权限</string>
+    <string name="prefs_loc_input_title">输入位置</string>
+    <string name="prefs_loc_input_error">输入的位置无效</string>
+    <string name="prefs_loc_qth_title">QTH 网格</string>
+    <string name="prefs_loc_qth_error">无效的 QTH 网格</string>
+    <string name="prefs_loc_success">位置更新成功</string>
+    <string name="prefs_station_title">站点位置设置</string>
+    <string name="prefs_station_lat_text">输入站点的纬度</string>
+    <string name="prefs_station_lon_text">输入站点的经度</string>
+    <string name="prefs_locator_title">QTH 网格</string>
+    <string name="prefs_wavelog_configure">配置</string>
+    <string name="prefs_wavelog_url">Wavelog 地址</string>
+    <string name="prefs_wavelog_syncing">同步中…</string>
+    <string name="prefs_wavelog_upload_title">Wavelog 配置</string>
+    <string name="prefs_wavelog_exclusive">与 LoTW 二选一配置，两者不兼容。</string>
+    <string name="prefs_wavelog_sync_incremental">增量同步</string>
+    <string name="prefs_wavelog_sync_full">全量同步</string>
+    <string name="prefs_wavelog_clear">清除配置</string>
+    <string name="prefs_wavelog_clear_title">清除 Wavelog 配置？</string>
+    <string name="prefs_wavelog_clear_message">清除后将切回 LoTW 模式，LoTW 功能恢复可用。</string>
+    <string name="prefs_wavelog_switch_title">配置提醒</string>
+    <string name="prefs_wavelog_switch_message">已配置 LoTW。配置 Wavelog 后，App 内 LoTW 的上传与同步将不可用（两者二选一，不兼容）。继续？</string>
+    <string name="prefs_wavelog_switch_continue">继续</string>
+    <string name="prefs_lotw_disabled_wavelog">Wavelog 模式中不可用（二选一）</string>
+    <string name="prefs_wavelog_upload_not_configured">未配置 — 把本机通联记录上传到 Wavelog</string>
+    <string name="prefs_wavelog_upload_configured">站点 %1$s — 可以上传</string>
+    <string name="prefs_wavelog_upload_apikey">API key（读写权限）</string>
+    <string name="prefs_wavelog_upload_fetch">获取站点</string>
+    <string name="prefs_wavelog_upload_probing">检测中…</string>
+    <string name="prefs_wavelog_upload_station_none">未选择站点 — 点「获取站点」</string>
+    <string name="prefs_wavelog_upload_rights_rw">密钥：读写 — 可上传</string>
+    <string name="prefs_wavelog_upload_rights_r">密钥只读 — 请在 Wavelog → API 生成「读写」密钥</string>
+    <string name="prefs_wavelog_upload_hint">点「获取站点」选择上传使用的台站档案；密钥需要「读写」权限。</string>
+    <string name="prefs_lotw_title">LoTW 已确认网格</string>
+    <string name="prefs_lotw_callsign">LoTW 呼号</string>
+    <string name="prefs_lotw_password">LoTW 密码</string>
+    <string name="prefs_lotw_hint">直接从 ARRL LoTW 拉取该呼号已确认 QSO 的网格并覆盖本地已存集合（当前 %1$d 个）。密码仅保存在手机本地。点"同步"会自动保存凭据并拉取。</string>
+    <string name="prefs_lotw_sync">同步</string>
+    <string name="prefs_lotw_syncing">同步中…</string>
+    <string name="prefs_lotw_configured">已从 LoTW 同步 — 共 %1$d 个网格</string>
+    <string name="prefs_lotw_not_configured">未配置 — 直接登录 ARRL LoTW 拉取已确认 QSO 的网格，无需自建服务器</string>
+    <string name="lotw_sync_error_not_configured">LoTW 呼号/密码未配置</string>
+    <string name="lotw_sync_error_credentials">LoTW 同步失败——呼号或密码错误</string>
+    <string name="lotw_sync_error_rate_limited">LoTW 同步失败——服务器限流，请等几分钟后再试</string>
+    <string name="lotw_sync_error_timeout">LoTW 同步失败——连接超时，请更换网络重试</string>
+    <string name="lotw_sync_error_network">LoTW 同步失败——网络错误（%1$s）</string>
+    <string name="lotw_sync_full">全量同步</string>
+    <string name="lotw_sync_incremental">增量合并</string>
+    <string name="lotw_sync_rate_hint">下载速度约每 100 条 QSO 需 8 秒（另有 5–40 秒服务器生成时间）</string>
+    <string name="lotw_sync_progress_connecting">正在连接 LoTW 服务器…</string>
+    <string name="lotw_sync_progress_downloading">正在下载报告…</string>
+    <string name="lotw_sync_progress_saving">正在处理下载的数据…</string>
+    <string name="lotw_sync_progress_count">本次同步 %1$d 条 QSO…</string>
+    <string name="lotw_sync_progress_qso">本次同步 %1$d 条 QSO，预计还需 %2$d 秒</string>
+    <string name="prefs_locator_text">使用梅登黑德网格设置站点位置</string>
+
+    <string name="btn_delete">删除</string>
+    <string name="prefs_logbook_title">日志本</string>
+    <string name="prefs_logbook_count">%1$d 条记录 — 本地通联与 LoTW 确认</string>
+    <string name="prefs_logbook_empty">暂无记录 — 在雷达页 Log 标签记录通联</string>
+    <string name="prefs_logbook_close">关闭</string>
+    <string name="prefs_logbook_upload">上传</string>
+    <string name="prefs_logbook_upload_title">上传到 LoTW</string>
+    <string name="prefs_logbook_upload_confirm">确认上传</string>
+    <string name="prefs_logbook_resubmit">重传选中 (%1$d)</string>
+    <string name="prefs_logbook_selected">已选 %1$d 条</string>
+    <string name="prefs_logbook_select_hint">长按记录行可多选重传</string>
+    <string name="prefs_logbook_resubmit_note">已上传记录将按当前台址就地更新；已被奖项使用的旧网格可能被拒绝。</string>
+    <string name="prefs_logbook_callsign_missing">其中 %1$d 条记录没有呼号，将按证书 %2$s 上传。</string>
+    <string name="prefs_logbook_callsign_different">%1$d 条记录登记的不是证书 %2$s 的呼号。</string>
+    <string name="prefs_logbook_callsign_rewrite">改写为 %1$s</string>
+    <string name="prefs_logbook_callsign_switch">换一张证书</string>
+    <string name="prefs_logbook_station_label">台址</string>
+    <string name="prefs_logbook_station_all">全部</string>
+    <string name="prefs_logbook_upload_wavelog_title">上传到 Wavelog</string>
+    <string name="lotw_upload_grid_title">上传前核对</string>
+    <string name="lotw_upload_grid_fix">修改台址</string>
+    <string name="lotw_upload_grid_ignore">忽略</string>
+    <string name="lotw_upload_grid_mismatch">当前定位 %1$s 不在证书台址网格 %2$s 内——如果正在此处操作，请先更新台址再上传。</string>
+    <string name="lotw_upload_pos_hint">当前定位 %1$s 不在证书台址网格 %2$s 内 · 点此更新</string>
+    <string name="prefs_lotw_upload_title">LoTW 上传证书</string>
+    <string name="prefs_lotw_upload_configured">证书已导入 · 台址网格 %1$s</string>
+    <string name="prefs_lotw_upload_not_configured">未配置 — 导入 TrustedQSL 证书后即可上传通联</string>
+    <string name="prefs_lotw_upload_busy">处理中…</string>
+    <string name="prefs_lotw_upload_cert_hint">导入你的 TrustedQSL .p12 证书（与 TQSL 同款）用于签名上传通联。密码仅加密保存在手机本地。</string>
+    <string name="prefs_lotw_upload_password">证书密码</string>
+    <string name="prefs_lotw_upload_password_hint">证书无密码时留空即可</string>
+    <string name="prefs_lotw_upload_import">选择 .p12 文件</string>
+    <string name="prefs_lotw_upload_import_confirm">导入</string>
+    <string name="prefs_lotw_upload_error_password">证书密码错误，请检查 TQSL 导出 .p12 时设置的密码</string>
+    <string name="prefs_lotw_upload_error_expired">证书已过期或尚未生效</string>
+    <string name="prefs_lotw_upload_error_invalid">不是有效的 LoTW 证书文件</string>
+    <string name="prefs_lotw_upload_error_format">不支持的 .p12 加密，请用 TQSL 默认加密重新导出后再试</string>
+    <string name="prefs_lotw_upload_error_format_alg">不支持的 .p12 加密（%1$s），请用 TQSL 默认加密重新导出后再试</string>
+    <string name="prefs_lotw_upload_error_unknown">导入失败，请重试</string>
+    <string name="prefs_lotw_upload_cert_info">%1$s · DXCC %2$d · 有效期至 %3$s</string>
+    <string name="prefs_lotw_upload_remove">移除证书</string>
+    <string name="prefs_lotw_upload_station_title">台址</string>
+    <string name="prefs_lotw_upload_region_hint">未选择</string>
+    <string name="prefs_lotw_upload_region_label">省份</string>
+    <string name="prefs_lotw_upload_region_pending">导入证书后可选</string>
+    <string name="prefs_lotw_upload_grid">网格（逗号分隔，可多格）</string>
+    <string name="prefs_lotw_upload_save">保存</string>
+    <string name="prefs_lotw_upload_close">关闭</string>
+
+    <string name="prefs_data_title">卫星数据更新</string>
+    <string name="prefs_data_entries">卫星：%s</string>
+    <string name="prefs_data_radios">收发器：%s</string>
+    <string name="prefs_data_update">在线更新</string>
+    <string name="prefs_data_import">导入文件</string>
+    <string name="prefs_data_clear">清空</string>
+    <string name="prefs_data_clear_success">数据清空成功</string>
+    <string name="prefs_data_update_success">更新成功</string>
+
+    <string name="prefs_data_import_satellites_error">未导入卫星。请选择有效的 TLE/3LE (.txt) 或 OMM (.csv) 文件。</string>
+    <string name="prefs_data_import_transceivers_error">未导入收发器。请选择有效的 SatNOGS (.json) 文件。</string>
+
+    <string name="prefs_data_sources_title">自定义数据源</string>
+    <string name="prefs_data_sources_sat_hint">轨道数据优先取列表最新星历，此顺序仅影响卫星名称</string>
+    <string name="prefs_data_sources_transceivers_hint">靠前优先：收发器数据</string>
+    <string name="prefs_data_sources_restore">恢复默认数据源</string>
+    <string name="prefs_data_sources_tle_switch">自定义TLE URL</string>
+    <string name="prefs_data_sources_transceivers_switch">自定义收发器URL</string>
+    <string name="prefs_data_sources_url_title" translatable="false">URL</string>
+    <string name="prefs_data_sources_satellites_label">卫星数据</string>
+    <string name="prefs_data_sources_transceivers_label">收发器数据</string>
+
+    <string name="prefs_data_output_title">数据输出</string>
+    <string name="prefs_net_output">网络</string>
+    <string name="prefs_bt_output">蓝牙</string>
+    <string name="prefs_cat_output">CAT</string>
+
+    <string name="prefs_net_title">网络数据输出</string>
+    <string name="prefs_net_rotator_switch">启用方位俯仰角输出</string>
+    <string name="prefs_net_rotator_address_hint">IP:端口</string>
+    <string name="prefs_net_rotator_format_hint">数据格式</string>
+    <string name="prefs_net_frequency_switch">启用多普勒频率输出</string>
+    <string name="prefs_net_frequency_address_hint">IP:端口</string>
+    <string name="prefs_net_frequency_format_hint">数据格式</string>
+    <string name="prefs_net_frequency_offset_hint" translatable="false">频率偏移 (Hz)</string>
+    <string name="prefs_net_frequency_offset_help" translatable="false">范围：-50000 到 50000 Hz。正值提高上报频率，负值降低上报频率。</string>
+
+    <string name="prefs_bt_title">蓝牙数据输出</string>
+    <string name="prefs_bt_rotator_switch">启用方位俯仰角输出</string>
+    <string name="prefs_bt_rotator_device_hint">蓝牙设备 ID</string>
+    <string name="prefs_bt_rotator_output_hint">数据格式</string>
+    <string name="prefs_bt_frequency_switch">启用多普勒频率输出</string>
+    <string name="prefs_bt_frequency_device_hint">蓝牙设备 ID</string>
+    <string name="prefs_bt_frequency_output_hint">数据格式</string>
+    <string name="prefs_bt_perm_error">请检查蓝牙权限</string>
+    <string name="prefs_net_perm_error">请检查网络权限</string>
+
+    <!-- Radio Control -->
+    <string name="nav_radiocontrol">电台控制</string>
+    <string name="rc_settings_title">CAT 电台控制</string>
+    <string name="rc_radio_model">电台型号</string>
+    <string name="rc_tx_device_hint">发射电台蓝牙地址</string>
+    <string name="rc_rx_device_hint">接收电台蓝牙地址</string>
+    <string name="rc_tx_name_hint">发射电台名称</string>
+    <string name="rc_rx_name_hint">接收电台名称</string>
+    <string name="rc_enable_switch">启用 CAT 控制</string>
+
+    <string name="prefs_other_title">其他设置</string>
+    <string name="prefs_map_title">地图设置</string>
+    <string name="prefs_map_configure">配置地图</string>
+    <string name="prefs_map_source_title">地图来源</string>
+    <string name="prefs_map_source_osm">离线 OSM 地图</string>
+    <string name="prefs_map_source_tianditu_vector">天地图（矢量）</string>
+    <string name="prefs_map_source_tianditu_image">天地图（影像）</string>
+    <string name="prefs_map_tianditu_key">天地图访问密钥</string>
+    <string name="prefs_map_tianditu_key_help">使用天地图前，需先在天地图开发者控制台申请服务端应用 Key。</string>
+    <string name="prefs_map_tianditu_key_required">选择天地图需要填写访问密钥；保存密钥前将继续使用离线 OSM 地图。</string>
+    <string name="prefs_other_switch_utc">以 UTC 时间显示</string>
+    <string name="prefs_other_switch_update">启用卫星数据自动更新</string>
+    <string name="prefs_other_switch_lotw_sync">自动同步 LoTW 已确认网格</string>
+    <string name="prefs_other_switch_sweep">启用雷达扫描动画</string>
+    <string name="prefs_other_switch_sensors">使用传感器旋转雷达视图</string>
+    <string name="prefs_compass_calibration_button">校准指南针</string>
+    <string name="prefs_compass_calibration_title">指南针校准</string>
+    <string name="prefs_compass_calibration_instruction">缓慢移动手机画“8”字，直到精度提高。请远离磁铁和金属物体。</string>
+    <string name="prefs_compass_accuracy">精度：%s</string>
+    <string name="prefs_compass_accuracy_high">高——校准完成</string>
+    <string name="prefs_compass_accuracy_medium">中——请继续移动</string>
+    <string name="prefs_compass_accuracy_low">低——请继续移动</string>
+    <string name="prefs_compass_accuracy_unreliable">不可靠——请开始“8”字动作</string>
+    <string name="prefs_compass_accuracy_unavailable">设备没有可用的磁场传感器</string>
+    <string name="prefs_compass_heading">校正后航向：%.1f°</string>
+    <string name="prefs_compass_offset">手动航向偏置（°）</string>
+    <string name="prefs_compass_offset_support">范围 −180° 至 +180°；正值为顺时针偏移。</string>
+    <string name="prefs_compass_offset_reset">偏置归零</string>
+    <string name="prefs_other_switch_light_theme">浅色主题</string>
+    <string name="prefs_other_switch_night_mode">启用红色夜间模式</string>
+    <string name="prefs_other_switch_map_grid">地图显示 Maidenhead 网格</string>
+
+    <string name="prefs_highlight_title">仰角高亮</string>
+    <string name="prefs_highlight_low">低 &lt; %1$d°</string>
+    <string name="prefs_highlight_mid">中 %1$d-%2$d°</string>
+    <string name="prefs_highlight_high">高 &gt; %1$d°</string>
+
+    <string name="prefs_outro_title">致谢与声明</string>
+    <string name="prefs_project_wiki">Project Wiki</string>
+    <string name="project_wiki_intro">Look4Sat-BA7OPF 是基于 Look4Sat 的定制版，保留上游全部功能，并新增：</string>
+    <string name="project_wiki_section_logbook">卫星日志本与 LoTW</string>
+    <string name="project_wiki_logbook_1">卫星通联日志本——通联时一键记录呼号、时间、频率、模式、信号报告和网格。</string>
+    <string name="project_wiki_logbook_2">LoTW 直传——导入 ARRL 证书后，直接在 App 内把日志上传到 LoTW，无需电脑。</string>
+    <string name="project_wiki_logbook_3">确认同步——一键同步 LoTW 官方确认，日志自动标记“已上传 / 已确认”；修改已上传的记录会自动新建一条，原记录不受影响。</string>
+    <string name="project_wiki_logbook_how">用法：通联后点“记录”→ 日志页点“上传”→ 设置里“同步”查看确认。</string>
+    <string name="project_wiki_section_mutual">双站过境匹配</string>
+    <string name="project_wiki_mutual_1">友台共视匹配——输入你和友台的位置，找出双方同时可见的卫星过境，点一下直接进雷达图。</string>
+    <string name="project_wiki_mutual_how">用法：Match 页 → 设置两站位置 → 查询。</string>
+    <string name="project_wiki_section_grids">通联网格地图</string>
+    <string name="project_wiki_grids_1">已通联网格——LoTW/Wavelog 同步的网格在地图上标绿，支持奖状边界和首通呼号标签；点格子看该网格的通联记录，还能一键去匹配友台。</string>
+    <string name="project_wiki_grids_how">用法：地图页开启网格模式 → 设置里同步 LoTW/Wavelog。</string>
+    <string name="prefs_outro_thanks" translatable="false">
+        • Look4Sat 所有用户及贡献者!
+        \n• David A. B. Johnson (predict4java)
+        \n• Dave Moten (predict4java)
+        \n• Alexandru Csete (Gpredict)
+        \n• Dr T.S. Kelso (Celestrak)
+        \n• Libre Space Foundation (SatNOGS)
+        \n• xdsopl 和 Robot36 贡献者!
+        \n• BG7NTA BG5JSU（CW解码功能）
+        \n• BH2VSQ BG5JSU（天地图渲染支持）
+        \n• BG5JSU（LoTW上传支持）
+    </string>
+    <string name="prefs_outro_notice">Look4Sat-BA7OPF 是基于 Look4Sat（GPL-3.0）的非官方修改版，由 BA7OPF 独立维护，与原项目无隶属关系，亦未获其背书。
+上游项目：https://github.com/rt-bishop/Look4Sat</string>
+<string name="prefs_outro_license">基于 GNU GPL v3 许可 · 本程序不提供任何保修</string>
+
+    <!-- 匹配页 Mutual match page -->
+    <string name="mutual_title">过境匹配</string>
+    <string name="mutual_station_you">你的位置</string>
+    <string name="mutual_station_opposite">友台位置</string>
+    <string name="mutual_label_you">你</string>
+    <string name="mutual_label_opposite">友台</string>
+    <string name="mutual_status_calculating">正在计算双方共同可见窗口…</string>
+    <string name="mutual_status_error">请修正提示后重新查询</string>
+    <string name="mutual_status_matches">找到 %d 个匹配 · 点击卡片展开曲线</string>
+    <string name="mutual_status_none">未找到共同可见窗口，调整时间或仰角后重试</string>
+    <string name="mutual_status_idle">输入双方位置后点击查询</string>
+    <string name="mutual_chip_calculating">计算中</string>
+    <string name="mutual_chip_error">有错误</string>
+    <string name="mutual_chip_matches">%d 个匹配</string>
+    <string name="mutual_chip_none">无匹配</string>
+    <string name="mutual_chip_idle">待查询</string>
+    <string name="mutual_use_current">填入当前位置</string>
+    <string name="mutual_lat">纬度</string>
+    <string name="mutual_lon">经度</string>
+    <string name="mutual_grid">网格</string>
+    <string name="mutual_grid_hint">支持 4/6/8 位 Maidenhead 网格；也可直接输入经纬度</string>
+    <string name="mutual_min_elevation">最小仰角：%d°</string>
+    <string name="mutual_time_range">时间范围</string>
+    <string name="mutual_filter_transponder">转发器</string>
+    <string name="mutual_filter_fm">FM</string>
+    <string name="mutual_filter_linear">线性</string>
+    <string name="mutual_calculating">计算中…</string>
+    <string name="mutual_query">查询匹配</string>
+    <string name="mutual_elevation_you">你：%d°</string>
+    <string name="mutual_elevation_opposite">友台：%d°</string>
+    <string name="mutual_both_tracks">双方轨迹</string>
+    <string name="mutual_open_radar">查看雷达</string>
+    <string name="mutual_station_a">站点A</string>
+    <string name="mutual_station_b">站点B</string>
+    <string name="update_check_title">检查更新</string>
+    <string name="update_check_button">检查更新</string>
+    <string name="update_check_current">当前版本：%s</string>
+    <string name="update_check_latest">最新版本：%s</string>
+    <string name="update_check_up_to_date">已是最新版本</string>
+    <string name="update_check_available">发现新版本</string>
+    <string name="update_check_release_notes">更新内容</string>
+    <string name="update_check_download">下载并安装</string>
+    <string name="update_check_downloading">正在下载…</string>
+    <string name="update_check_error">检查更新失败，请检查网络连接。</string>
+    <string name="update_check_download_error">下载失败，请重试。</string>
+    <string name="update_check_no_apk">该版本未附带 APK 安装包。</string>
+
+    <!-- QSO edit dialog -->
+    <string name="qso_edit_title">编辑通联记录</string>
+    <string name="qso_edit_uploaded_notice">该通联已上传或已确认。保存将保留原记录不变，并新建一条记录。</string>
+    <string name="qso_edit_callsign">呼号</string>
+    <string name="qso_edit_date">日期 (UTC)</string>
+    <string name="qso_edit_time">时间 (UTC)</string>
+    <string name="qso_edit_tx">上行频率 (MHz)</string>
+    <string name="qso_edit_rx">下行频率 (MHz)</string>
+    <string name="qso_edit_band">频段：%1$s</string>
+    <string name="qso_edit_mode">模式</string>
+    <string name="qso_edit_satellite">卫星</string>
+    <string name="qso_edit_hint_satellite">LoTW 只接受它的官方卫星名</string>
+    <string name="qso_edit_sent">发送报告</string>
+    <string name="qso_edit_received">接收报告</string>
+    <string name="qso_edit_grid">对方网格</string>
+    <string name="qso_edit_comment">备注</string>
+    <string name="qso_edit_save">保存</string>
+    <string name="qso_edit_cancel">取消</string>
+    <string name="log_out_window_title">不在过境窗口</string>
+    <string name="log_out_window_message">当前时间不在该过境窗口内，将默认按过境中点 %1$s 录入；如需修改，请点击该条通联记录。</string>
+    <string name="log_out_window_confirm">录入</string>
+    <string name="qso_edit_err_callsign">呼号不能为空</string>
+    <string name="qso_edit_err_datetime">日期或时间格式不对 —— 应为 yyyy-MM-dd 与 HH:mm:ss（UTC）</string>
+    <string name="qso_edit_err_frequency">频率格式不对 —— 请输入 MHz，例如 145.850</string>
+    <string name="qso_edit_err_satellite">不是 LoTW 官方卫星名 —— 请从列表中选一个</string>
+    <string name="qso_edit_satellite_pick">选择</string>
+    <string name="qso_edit_satellite_pick_title">LoTW 官方卫星名</string>
+    <string name="qso_edit_satellite_search">搜索卫星名或数据源别名</string>
+    <string name="qso_edit_satellite_official">保存并签名时使用 %1$s</string>
+    <string name="qso_edit_warn_no_freq">没有上行频率：LoTW 要求 BAND，补上频率前这条无法上传</string>
+
+    <!-- 网格寻线（VUCC 网格线／网格角实地导航） -->
+    <string name="gridfinder_title">网格寻线</string>
+    <string name="gridfinder_status_corner">位于网格点上</string>
+    <string name="gridfinder_status_line">位于网格线上</string>
+    <string name="gridfinder_status_inside">在网格内部</string>
+    <string name="gridfinder_status_unknown">位置不可用</string>
+    <string name="gridfinder_status_waiting">正在获取定位…</string>
+    <string name="gridfinder_status_blocked">需要定位权限</string>
+    <string name="gridfinder_status_disabled">本机定位服务未开启</string>
+    <string name="gridfinder_status_confirmed">已由 %1$d 次连续满足 20 英尺规则的定位确认</string>
+    <string name="gridfinder_status_unconfirmed">尚未确认：精度达 6.1 m 的连续定位 %1$d/%2$d 次</string>
+    <string name="gridfinder_grant_permission">授予定位权限</string>
+    <string name="gridfinder_card_location">位置</string>
+    <string name="gridfinder_card_corner">最近网格点引导</string>
+    <string name="gridfinder_card_line">最近网格线引导</string>
+    <string name="gridfinder_card_lines">两条边界线</string>
+    <string name="gridfinder_card_map">近距离网格图</string>
+    <string name="gridfinder_card_fix">定位质量</string>
+    <string name="gridfinder_card_compass">罗盘</string>
+    <string name="gridfinder_label_claimable">此处可计分的网格</string>
+    <string name="gridfinder_label_grid4">网格 (4)</string>
+    <string name="gridfinder_label_grid6">网格 (6)</string>
+    <string name="gridfinder_label_grid8">网格 (8)</string>
+    <string name="gridfinder_label_latitude">纬度</string>
+    <string name="gridfinder_label_longitude">经度</string>
+    <string name="gridfinder_label_altitude">海拔</string>
+    <string name="gridfinder_label_accuracy">水平精度</string>
+    <string name="gridfinder_label_fix_age">定位时刻</string>
+    <string name="gridfinder_label_provider">定位来源</string>
+    <string name="gridfinder_value_provider_on">已开启</string>
+    <string name="gridfinder_value_provider_off">未开启</string>
+    <string name="gridfinder_label_distance">距离</string>
+    <string name="gridfinder_label_bearing">方位角</string>
+    <string name="gridfinder_label_direction">方向</string>
+    <string name="gridfinder_label_grids">网格</string>
+    <string name="gridfinder_label_lat_line">纬线</string>
+    <string name="gridfinder_label_lon_line">经线</string>
+    <string name="gridfinder_line_value">位于%2$s方向 %1$s</string>
+    <string name="gridfinder_line_latitude">这是纬度边界，东西走向</string>
+    <string name="gridfinder_line_longitude">这是经度边界，南北走向</string>
+    <string name="gridfinder_label_heading">朝向</string>
+    <string name="gridfinder_label_compass_accuracy">罗盘精度</string>
+    <string name="gridfinder_action_set_station">设为我的台址</string>
+    <string name="gridfinder_action_station_saved">台址已更新 —— 过境预报将使用这个位置</string>
+    <string name="gridfinder_action_calibrate">校准罗盘</string>
+    <string name="gridfinder_map_legend">中心点是你的位置，虚线是正北与正东，直线是两条网格边界，绿点是最近的网格点，圆环是最近网格线的垂足，红色指针是你的朝向</string>
+    <string name="gridfinder_compass_disabled_hint">设置里未开启罗盘，表盘按正北朝上显示。方位角数字仍可引导你</string>
+    <string name="gridfinder_compass_unavailable_hint">本机没有磁力传感器 —— 请按方位角数字导航</string>
+    <string name="gridfinder_compass_hint">请平持手机，箭头指向应走的方向</string>
+    <string name="gridfinder_vucc_rule_note">VUCC 20 英尺规则：%1$.1f m</string>
+    <string name="gridfinder_direction_north">北</string>
+    <string name="gridfinder_direction_south">南</string>
+    <string name="gridfinder_direction_east">东</string>
+    <string name="gridfinder_direction_west">西</string>
+    <string name="gridfinder_action_set_lotw_station">设为 LoTW 上传台址（%1$s）</string>
+    <string name="gridfinder_lotw_station_hint">预填上传台站网格：上传时 LoTW 按这些格记录（线上 2 格、角上 4 格）；证书呼号保持不变。</string>
+
+</resources>

core/presentation/src/main/res/values-es/strings.xml

@@ -19,6 +19,10 @@
     <string name="sat_search_clear">Vaciar</string>
     <string name="sat_clear_all">Vaciar todo</string>
     <string name="sat_select_all">Seleccionar todo</string>
+    <string name="sat_group_selected">Seleccionados</string>
+    <string name="sat_group_available">Disponibles</string>
+    <string name="sat_group_selected_count">Seleccionados (%1$d)</string>
+    <string name="sat_group_available_count">Disponibles (%1$d)</string>
     <string name="sat_empty_list_message">
         Asegúrese de que su consulta de búsqueda sea correcta y que la base de datos esté actualizada</string>
     <string name="sat_warning_title">Alarma\!</string>

core/presentation/src/main/res/values-ru/strings.xml

@@ -19,6 +19,10 @@
     <string name="sat_search_clear">Очистить</string>
     <string name="sat_clear_all">Очистить</string>
     <string name="sat_select_all">Выбрать</string>
+    <string name="sat_group_selected">Выбранные</string>
+    <string name="sat_group_available">Доступные</string>
+    <string name="sat_group_selected_count">Выбранные (%1$d)</string>
+    <string name="sat_group_available_count">Доступные (%1$d)</string>
     <string name="sat_empty_list_message">Убедитесь, что ваш поисковый запрос верен и база данных обновлена</string>
     <string name="sat_warning_title">Внимание\!</string>
     <string name="sat_warning_message">

core/presentation/src/main/res/values-si/strings.xml

@@ -19,6 +19,10 @@
     <string name="sat_search_clear">පිරිසිදු ක°</string>
     <string name="sat_clear_all">සියල්ල පිරිසිදු ක°</string>
     <string name="sat_select_all">සියල්ල තෝරන්න</string>
+    <string name="sat_group_selected">තෝරාගත්</string>
+    <string name="sat_group_available">තිබෙන</string>
+    <string name="sat_group_selected_count">තෝරාගත් (%1$d)</string>
+    <string name="sat_group_available_count">තිබෙන (%1$d)</string>
     <string name="sat_empty_list_message">
         ඔබගේ සෙවුම් විමසුම නිවැරදි බවත් දත්ත සමුදාය යාවත්කාලීන කර ඇති බවත් සහතික කර ගන්න</string>
     <string name="sat_warning_title">අවවාදයයි\!</string>

core/presentation/src/main/res/values-tr/strings.xml

@@ -20,6 +20,10 @@
     <string name="sat_search_clear">Temizle</string>
     <string name="sat_clear_all">Tümünü temizle</string>
     <string name="sat_select_all">Tümünü seç</string>
+    <string name="sat_group_selected">Seçilenler</string>
+    <string name="sat_group_available">Kullanılabilir</string>
+    <string name="sat_group_selected_count">Seçilenler (%1$d)</string>
+    <string name="sat_group_available_count">Kullanılabilir (%1$d)</string>
     <string name="sat_empty_list_message">"Arama sorgunuzun doğru olduğundan ve veritabanının güncellendiğinden emin olun"</string>
     <string name="sat_warning_title">Uyarı\!</string>
     <string name="sat_warning_message">

core/presentation/src/main/res/values-uk/strings.xml

@@ -19,6 +19,10 @@
     <string name="sat_search_clear">Очистити</string>
     <string name="sat_clear_all">Очистити всі</string>
     <string name="sat_select_all">Вибрати всі</string>
+    <string name="sat_group_selected">Обрані</string>
+    <string name="sat_group_available">Доступні</string>
+    <string name="sat_group_selected_count">Обрані (%1$d)</string>
+    <string name="sat_group_available_count">Доступні (%1$d)</string>
     <string name="sat_empty_list_message">
         Переконайтеся, що ваш пошуковий запит правильний, а база даних оновлена</string>
     <string name="sat_warning_title">Увага\!</string>

core/presentation/src/main/res/values-zh/strings.xml

@@ -20,6 +20,10 @@
     <string name="sat_search_clear">清空</string>
     <string name="sat_clear_all">全部清空</string>
     <string name="sat_select_all">全选</string>
+    <string name="sat_group_selected">已选择</string>
+    <string name="sat_group_available">可用</string>
+    <string name="sat_group_selected_count">已选择（%1$d）</string>
+    <string name="sat_group_available_count">可用（%1$d）</string>
     <string name="sat_empty_list_message">请确保您的搜索查询正确且数据库已更新</string>
     <string name="sat_warning_title">警告\!</string>
     <string name="sat_warning_message">此应用收录了超过9000颗卫星信息\n同时追踪所有卫星并不现实\n建议始终通过搜索和分类筛选功能仅勾选您感兴趣的卫星</string>

core/presentation/src/main/res/values/strings.xml

@@ -21,6 +21,10 @@
     <string name="sat_search_clear">Clear</string>
     <string name="sat_clear_all">Clear all</string>
     <string name="sat_select_all">Select all</string>
+    <string name="sat_group_selected">Selected</string>
+    <string name="sat_group_available">Available</string>
+    <string name="sat_group_selected_count">Selected (%1$d)</string>
+    <string name="sat_group_available_count">Available (%1$d)</string>
     <string name="sat_empty_list_message">"Make sure your search query is correct and the DB is updated"</string>
     <string name="sat_warning_title">Warning\!</string>
     <string name="sat_warning_message">

core/presentation/src/test/java/com/rtbishop/look4sat/core/presentation/TraditionalChineseFallbackTest.kt

@@ -0,0 +1,91 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2026 Arty Bishop and contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.rtbishop.look4sat.core.presentation
+
+import java.io.File
+import javax.xml.parsers.DocumentBuilderFactory
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.w3c.dom.Element
+
+/**
+ * Android 7+ resolves Chinese by script, so an unqualified values-zh is treated as
+ * zh-Hans and a Traditional device (zh-TW / zh-HK / zh-MO, i.e. zh-Hant) never matches
+ * it — it used to fall back to the English default. values-b+zh+Hant carries the
+ * Simplified text for those devices, and the locale filter in the convention plugin
+ * keeps that config in the APK.
+ *
+ * Both halves fail silently at runtime (English strings, or a Hant config dropped from
+ * the resource table), so they are pinned here: keep the Hant copy verbatim and keep
+ * the Traditional locales in the locale filter.
+ */
+class TraditionalChineseFallbackTest {
+
+    private val simplified = stringEntries("src/main/res/values-zh/strings.xml")
+    private val traditional = stringEntries("src/main/res/values-b+zh+Hant/strings.xml")
+    private val conventionPlugin = generateSequence(File("").absoluteFile) { it.parentFile }
+        .map { File(it, "build-logic/convention/src/main/java/com/rtbishop/look4sat/convention/PluginSetupUtils.kt") }
+        .first { it.isFile }
+
+    @Test
+    fun `hant fallback is a verbatim copy of the simplified strings`() {
+        assertTrue("values-zh/strings.xml looks empty or unparsable", simplified.size > 400)
+        val missing = (simplified.keys - traditional.keys).sorted()
+        val extra = (traditional.keys - simplified.keys).sorted()
+        val changed = simplified.keys.intersect(traditional.keys)
+            .filter { simplified[it] != traditional[it] }
+            .sorted()
+        assertEquals("keys missing from values-b+zh+Hant", emptyList<String>(), missing)
+        assertEquals("keys only present in values-b+zh+Hant", emptyList<String>(), extra)
+        assertEquals("values-b+zh+Hant diverged from values-zh (copy the change over)", emptyList<String>(), changed)
+    }
+
+    @Test
+    fun `traditional locales survive the locale filter`() {
+        assertTrue("convention plugin not found: ${conventionPlugin.absolutePath}", conventionPlugin.isFile)
+        // Comments may mention either spelling, so only the code lines are inspected.
+        val filters = conventionPlugin.readLines()
+            .filterNot { it.trimStart().startsWith("//") }
+            .joinToString("\n")
+        val traditionalLocales = listOf("zh-rTW", "zh-rHK", "zh-rMO")
+        val dropped = traditionalLocales.filterNot { filters.contains("\"$it\"") }
+        assertEquals(
+            "localeFilters must list the Traditional locales, otherwise aapt2 strips" +
+                " values-b+zh+Hant from the APK and Traditional devices get English",
+            emptyList<String>(),
+            dropped
+        )
+        // aapt2 rejects the script spelling, so it must not creep back into the filter.
+        assertTrue("localeFilters must use the aapt2 'zh-rTW' spelling, not 'zh-Hant'", !filters.contains("\"zh-Hant\""))
+    }
+
+    private fun stringEntries(path: String): Map<String, String> {
+        val file = File(path)
+        assertTrue("resource file not found: ${file.absolutePath}", file.isFile)
+        val document = DocumentBuilderFactory.newInstance()
+            .apply { isNamespaceAware = false }
+            .newDocumentBuilder()
+            .parse(file)
+        val nodes = document.getElementsByTagName("string")
+        return (0 until nodes.length).associate {
+            val element = nodes.item(it) as Element
+            element.getAttribute("name") to element.textContent.trim()
+        }
+    }
+}

feature/mutual/src/main/java/com/rtbishop/look4sat/feature/mutual/MutualViewModel.kt

@@ -82,7 +82,10 @@ class MutualViewModel(
     private val settingsRepo: ISettingsRepo,
     // Injected so unit tests can run the pass computation on a test dispatcher;
     // production callers keep the CPU-bound pool default.
-    private val computeDispatcher: CoroutineDispatcher = Dispatchers.Default
+    private val computeDispatcher: CoroutineDispatcher = Dispatchers.Default,
+    // Injected so unit tests can pin the wall clock to the fixture TLE epoch and
+    // stay deterministic; production callers keep the real clock default.
+    private val nowMillis: () -> Long = System::currentTimeMillis
 ) : ViewModel() {
 
     private val _uiState = MutableStateFlow(MutualUiState())
@@ -303,7 +306,7 @@ class MutualViewModel(
         queryGeneration += 1
 
         viewModelScope.launch {
-            val now = System.currentTimeMillis()
+            val now = nowMillis()
             // 转发器类型筛选: 使用硬编码 AMSAT Live 清单 (见 Sources):
             // FM = {SO-50, ISS ZARYA, AO-123}, Linear = {RS-44, FO-29,
             // AO-7, AO-73, JO-97}. 不再依赖 AMSAT 网页同步: 任何网络下都

feature/mutual/src/test/java/com/rtbishop/look4sat/feature/mutual/MutualViewModelTest.kt

@@ -53,7 +53,9 @@ class MutualViewModelTest {
     ): MutualViewModel = MutualViewModel(
         satelliteRepo = FakeSatelliteRepo(satellites, passes),
         settingsRepo = FakeSettingsRepo(position),
-        computeDispatcher = StandardTestDispatcher(mainDispatcherRule.dispatcher.scheduler)
+        computeDispatcher = StandardTestDispatcher(mainDispatcherRule.dispatcher.scheduler),
+        // Pin the clock to the fixture base so results never depend on wall time.
+        nowMillis = { TestOrbits.FIXTURE_BASE }
     )
 
     private fun TestScope.queryAndSettle(vm: MutualViewModel) {
@@ -219,7 +221,7 @@ class MutualViewModelTest {
         assertTrue(state.mutualPasses.all { it.catNum == 25544 })
         assertTrue(state.mutualPasses.all { it.name == "ISS (ZARYA)" })
         // AOS/LOS within the searched horizon
-        val now = System.currentTimeMillis()
+        val now = TestOrbits.FIXTURE_BASE
         assertTrue(state.mutualPasses.all { it.startTime >= now - 120_000L })
         assertTrue(state.mutualPasses.all { it.endTime <= now + 12 * 3600_000L + 120_000L })
     }

feature/mutual/src/test/java/com/rtbishop/look4sat/feature/mutual/TestOrbits.kt

@@ -48,6 +48,15 @@ object TestOrbits {
         )
     )
 
+    /**
+     * Fixed wall-clock base for every fixture computation: 2024-03-10T00:00Z,
+     * ~18 h after [ISS]'s TLE epoch, so SGP4 propagates an accurate, healthy
+     * orbit. Tests pin the ViewModel clock to this value as well
+     * (MutualViewModel.nowMillis), which makes pass windows deterministic
+     * instead of rotting as the fixture ages against System.currentTimeMillis().
+     */
+    val FIXTURE_BASE: Long = 1710028800000L
+
     /** Guangzhou (default BA7OPF grid OL62/OL63 area). */
     val GUANGZHOU = GeoPos(23.13, 113.26)
 
@@ -85,7 +94,7 @@ object TestOrbits {
     fun findPassWindows(
         sat: OrbitalObject = ISS,
         pos: GeoPos = GUANGZHOU,
-        time: Long = System.currentTimeMillis(),
+        time: Long = FIXTURE_BASE,
         hoursAhead: Int = 12
     ): List<OrbitalPass> {
         if (!sat.willBeSeen(pos)) return emptyList()

feature/satellites/src/main/java/com/rtbishop/look4sat/feature/satellites/SatellitesScreen.kt

@@ -326,9 +326,52 @@ private fun SatellitesPreview() {
 
 @Composable
 private fun SatellitesCard(items: List<SatItem>, onSelected: (Int, Boolean) -> Unit) {
+    val selectedItems = items.filter { it.isSelected }
+    val availableItems = items.filterNot { it.isSelected }
+
     LazyVerticalGrid(columns = GridCells.Adaptive(320.dp)) {
-        items(items = items, key = { item -> item.catnum }) { entry ->
-            Satellite(entry, onSelected, Modifier.animateItem())
+        stickyHeader(key = "sat_summary_header") {
+            SummaryHeader(
+                selectedText = stringResource(R.string.sat_group_selected_count, selectedItems.size),
+                availableText = stringResource(R.string.sat_group_available_count, availableItems.size)
+            )
+        }
+
+        if (selectedItems.isNotEmpty()) {
+            items(items = selectedItems, key = { item -> item.catnum }) { entry ->
+                Satellite(entry, onSelected, Modifier.animateItem())
+            }
+        }
+
+        if (availableItems.isNotEmpty()) {
+            items(items = availableItems, key = { item -> item.catnum }) { entry ->
+                Satellite(entry, onSelected, Modifier.animateItem())
+            }
         }
     }
 }
+
+@Composable
+private fun SummaryHeader(selectedText: String, availableText: String) {
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.SpaceBetween,
+        modifier = Modifier
+            .fillMaxWidth()
+            .background(MaterialTheme.colorScheme.surfaceContainerHighest)
+            .padding(horizontal = 12.dp, vertical = 4.dp)
+    ) {
+        Text(
+            text = selectedText,
+            style = MaterialTheme.typography.titleSmall,
+            fontWeight = FontWeight.SemiBold,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        Text(
+            text = availableText,
+            style = MaterialTheme.typography.titleSmall,
+            fontWeight = FontWeight.SemiBold,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+    }
+}

gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
 #noinspection UnusedVersionCatalogEntry
-appVersionCode = "579"
+appVersionCode = "583"
 #noinspection UnusedVersionCatalogEntry
-appVersionName = "4.4.8-ba7opf.11.4"
+appVersionName = "4.4.8-ba7opf.11.8"
 #noinspection UnusedVersionCatalogEntry
 compileSdk = "37"
 #noinspection UnusedVersionCatalogEntry