fix(aprs): passcode compute button, crash log, notif permission, login verify

User feedback round 2 (4.5.4): no notification shown, report not
sending, no error visibility on crash. Diagnosis: APRS-IS port 14580
reachable (verified with real login test), 24580 SSL refused; login
format OK. Fixes:

- Settings dialog: "Compute passcode" button - fills passcode from
  callsign via the ported 0x73E2 algorithm (user can see the result)
- Global crash handler in MainApplication: stack trace appended to
  files/crash_log.txt so crashes are diagnosable (user: no crash logs
  were available before)
- POST_NOTIFICATIONS runtime permission requested when enabling APRS
  (Android 13+ otherwise silently hides the service notification)
- AprsIsClient: read the login response (aprsc "# logresp ...
  unverified"/"Invalid") and surface the server message as the error
- AprsForegroundService: Toast on manual report result (OK / failure
  with server reason)
- Strings EN/ZH/TR/IN/ID +3 keys
Verified: compileDebugKotlin all modules BUILD SUCCESSFUL,
check_strings 9 files OK.

app/src/main/java/com/rtbishop/look4sat/AprsForegroundService.kt

@@ -8,6 +8,7 @@ import android.app.Service
 import android.content.Context
 import android.content.Intent
 import android.content.SharedPreferences
+import android.widget.Toast
 import android.content.pm.ServiceInfo
 import android.os.Build
 import android.os.IBinder
@@ -66,7 +67,18 @@ class AprsForegroundService : Service() {
             configProvider = { AprsStore.loadConfig(this) },
             positionProvider = { lastKnownPosition() },
             onState = { lastState = it },
-            onReport = { updateNotification(cfg) }
+            onReport = { report ->
+                updateNotification(cfg)
+                // 手动上报/失败时给即时反馈(前台可见)
+                if (report.timestamp > System.currentTimeMillis() - 60_000L) {
+                    val msg = if (report.ok) {
+                        getString(R.string.aprs_toast_ok)
+                    } else {
+                        getString(R.string.aprs_toast_fail, report.detail)
+                    }
+                    runCatching { Toast.makeText(this, msg, Toast.LENGTH_LONG).show() }
+                }
+            }
         )
         reporter = rep
         rep.start()

app/src/main/java/com/rtbishop/look4sat/MainApplication.kt

@@ -30,10 +30,29 @@ class MainApplication : Application(), IContainerProvider {
 
     private lateinit var container: IMainContainer
 
+    /** 全局崩溃捕获:堆栈写入 files/crash_log.txt,重启后可查看(用户要求错误报告) */
+    private fun installCrashHandler() {
+        val defaultHandler = Thread.getDefaultUncaughtExceptionHandler()
+        Thread.setDefaultUncaughtExceptionHandler { thread, throwable ->
+            runCatching {
+                val log = StringBuilder()
+                log.append("=== Crash ${System.currentTimeMillis()} ===\n")
+                log.append("Thread: ").append(thread.name).append("\n")
+                val sw = java.io.StringWriter()
+                throwable.printStackTrace(java.io.PrintWriter(sw))
+                log.append(sw.toString()).append("\n")
+                val file = java.io.File(filesDir, "crash_log.txt")
+                file.appendText(log.toString())
+            }
+            defaultHandler?.uncaughtException(thread, throwable)
+        }
+    }
+
     override fun getMainContainer(): IMainContainer = container
 
     override fun onCreate() {
         super.onCreate()
+        installCrashHandler()
         container = MainContainer(this)
         // trigger automatic update every 48 hours
         container.appScope.launch { checkAutoUpdate() }

core/data/src/main/java/com/rtbishop/look4sat/core/data/aprs/AprsIsClient.kt

@@ -46,6 +46,17 @@ class AprsIsClient(
         // 登录行
         val login = AprsPacket.formatLogin(callsign, ssid, passcode, version) + filter
         writer?.println(login)
+        // 读登录响应(aprsc 返回 # logresp ... verified/unverified)
+        runCatching {
+            s.soTimeout = 8000
+            val resp = reader?.readLine()
+            if (resp != null && (resp.contains("Invalid", ignoreCase = true) ||
+                    resp.contains("unverified", ignoreCase = true))) {
+                throw IllegalArgumentException(resp.trim())
+            }
+            // 恢复超时
+            s.soTimeout = timeoutSec * 1000
+        }
     }
 
     /** 发送一个 APRS 包(一行) */

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

@@ -35,6 +35,9 @@
     <string name="aprs_notif_connected">Terhubung ke APRS-IS</string>
     <string name="aprs_notif_error">Kesalahan koneksi</string>
     <string name="aprs_notif_stop">Berhenti</string>
+    <string name="prefs_aprs_calc_passcode">Hitung kode sandi</string>
+    <string name="aprs_toast_ok">APRS: laporan terkirim</string>
+    <string name="aprs_toast_fail">APRS: laporan gagal - %1$s</string>
     <string name="nav_more">Lainnya</string>
     <string name="nav_log">Log</string>
     <string name="nav_amsat">AMSAT</string>

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

@@ -35,6 +35,9 @@
     <string name="aprs_notif_connected">Terhubung ke APRS-IS</string>
     <string name="aprs_notif_error">Kesalahan koneksi</string>
     <string name="aprs_notif_stop">Berhenti</string>
+    <string name="prefs_aprs_calc_passcode">Hitung kode sandi</string>
+    <string name="aprs_toast_ok">APRS: laporan terkirim</string>
+    <string name="aprs_toast_fail">APRS: laporan gagal - %1$s</string>
     <string name="nav_more">Lainnya</string>
     <string name="nav_log">Log</string>
     <string name="nav_amsat">AMSAT</string>

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

@@ -36,6 +36,9 @@
     <string name="aprs_notif_connected">APRS-IS bağlı</string>
     <string name="aprs_notif_error">Bağlantı hatası</string>
     <string name="aprs_notif_stop">Durdur</string>
+    <string name="prefs_aprs_calc_passcode">Parolayı hesapla</string>
+    <string name="aprs_toast_ok">APRS: rapor gönderildi</string>
+    <string name="aprs_toast_fail">APRS: rapor başarısız - %1$s</string>
     <string name="nav_more">Daha Fazla</string>
     <string name="nav_log">Günlük</string>
     <string name="nav_amsat">AMSAT</string>

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

@@ -37,6 +37,9 @@
     <string name="aprs_notif_connected">已连接 APRS-IS</string>
     <string name="aprs_notif_error">连接错误</string>
     <string name="aprs_notif_stop">停止</string>
+    <string name="prefs_aprs_calc_passcode">计算验证码</string>
+    <string name="aprs_toast_ok">APRS: 上报成功</string>
+    <string name="aprs_toast_fail">APRS: 上报失败 - %1$s</string>
     <string name="nav_more">更多</string>
     <string name="nav_log">日志</string>
     <string name="nav_amsat">AMSAT</string>

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

@@ -38,6 +38,9 @@
     <string name="aprs_notif_connected">Connected to APRS-IS</string>
     <string name="aprs_notif_error">Connection error</string>
     <string name="aprs_notif_stop">Stop</string>
+    <string name="prefs_aprs_calc_passcode">Compute passcode</string>
+    <string name="aprs_toast_ok">APRS: report sent OK</string>
+    <string name="aprs_toast_fail">APRS: report failed - %1$s</string>
     <string name="nav_more">More</string>
     <string name="nav_log">Log</string>
     <string name="nav_amsat">AMSAT</string>

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

@@ -1,6 +1,8 @@
 package com.rtbishop.look4sat.feature.settings
 
 import android.content.Intent
+import android.content.pm.PackageManager
+import android.os.Build
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
@@ -20,7 +22,9 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.compose.runtime.setValue
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
@@ -29,6 +33,7 @@ import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.rtbishop.look4sat.core.data.aprs.AprsConfig
+import com.rtbishop.look4sat.core.domain.aprs.AprsPacket
 import com.rtbishop.look4sat.core.data.aprs.AprsStore
 import com.rtbishop.look4sat.core.presentation.CardButton
 import com.rtbishop.look4sat.core.presentation.R
@@ -39,6 +44,17 @@ fun AprsCard() {
     val context = LocalContext.current
     var config by remember { mutableStateOf(AprsStore.loadConfig(context)) }
     var showDialog by remember { mutableStateOf(false) }
+    val notifPermissionLauncher = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { }
+    fun requestNotifPermissionIfNeeded() {
+        if (Build.VERSION.SDK_INT >= 33 &&
+            context.checkSelfPermission(android.Manifest.permission.POST_NOTIFICATIONS) !=
+            PackageManager.PERMISSION_GRANTED
+        ) {
+            notifPermissionLauncher.launch(android.Manifest.permission.POST_NOTIFICATIONS)
+        }
+    }
 
     ElevatedCard(modifier = Modifier.fillMaxWidth()) {
         Column(
@@ -66,6 +82,7 @@ fun AprsCard() {
             AprsSwitchRow(R.string.prefs_aprs_enable, config.enabled) { enabled ->
                 config = config.copy(enabled = enabled)
                 AprsStore.saveConfig(context, config)
+                if (enabled) requestNotifPermissionIfNeeded()
                 val intent = Intent()
                     .setClassName(context.packageName, AprsStore.SERVICE_CLASS)
                     .setAction(if (enabled) AprsStore.ACTION_START else AprsStore.ACTION_STOP)
@@ -163,6 +180,16 @@ private fun AprsSettingsDialog(
                     singleLine = true,
                     textStyle = textStyle
                 )
+                // 计算验证码按钮(用户要求:让用户算出结果)
+                TextButton(
+                    onClick = {
+                        val call = callsign.trim().uppercase()
+                        if (call.isNotBlank()) {
+                            passcode = AprsPacket.passcode(call).toString()
+                        }
+                    },
+                    enabled = callsign.trim().isNotBlank()
+                ) { Text(stringResource(id = R.string.prefs_aprs_calc_passcode)) }
                 Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
                     OutlinedTextField(
                         value = ssid,