Fix compile errors from initial build

- Main.kt: move ConfigStore/AppState outside application {} scope (remember
  is not valid outside a composable)
- IosConnector: split runGphoto2/runGphoto2InDir to avoid named+positional
  vararg mixing (Kotlin does not allow this)
- ConnectScreen: fix SmartPhone -> Smartphone icon name
- ConnectScreen/BrowseScreen/ImportScreen/SettingsScreen: update deprecated
  Icons.Default.ArrowBack to Icons.AutoMirrored.Filled.ArrowBack
- AndroidConnector: remove unused variable assignment in remoteChecksum
- ExifFilter: replace return@filter labels with private helper function to
  eliminate ambiguous label warnings

src/main/kotlin/com/bolenpad/photophetch/Main.kt

@@ -9,15 +9,19 @@ import com.bolenpad.photophetch.ui.App
 import com.bolenpad.photophetch.ui.AppState
 import com.bolenpad.photophetch.util.ConfigStore
 
-fun main() = application {
-    val configStore = remember { ConfigStore() }
-    val appState = remember { AppState(configStore) }
+fun main() {
+    // ConfigStore and AppState live outside the composition — they are
+    // application-lifetime singletons, not composable state.
+    val configStore = ConfigStore()
+    val appState = AppState(configStore)
 
-    Window(
-        onCloseRequest = ::exitApplication,
-        title = "PhotoPhetch",
-        state = WindowState(size = DpSize(900.dp, 700.dp)),
-    ) {
-        App(appState)
+    application {
+        Window(
+            onCloseRequest = ::exitApplication,
+            title = "PhotoPhetch",
+            state = WindowState(size = DpSize(900.dp, 700.dp)),
+        ) {
+            App(appState)
+        }
     }
 }

src/main/kotlin/com/bolenpad/photophetch/device/AndroidConnector.kt

@@ -138,7 +138,7 @@ class AndroidConnector(
             // Android has md5sum or sha256sum depending on version; try sha256sum first
             var output = runAdb(serial, "shell", "sha256sum", photo.devicePath)
             if (output.contains("not found") || output.isBlank()) {
-                output = runAdb(serial, "shell", "md5sum", photo.devicePath)
+                runAdb(serial, "shell", "md5sum", photo.devicePath)
                 // md5sum isn't SHA-256 — return null so Copier uses its own verification
                 return null
             }

src/main/kotlin/com/bolenpad/photophetch/device/IosConnector.kt

@@ -105,8 +105,8 @@ class IosConnector(
         val destFile = destinationDir.resolve(photo.filename)
 
         // --get-file downloads to current dir; we set working dir to destinationDir
-        val output = runGphoto2(
-            workingDir = destinationDir,
+        val output = runGphoto2InDir(
+            destinationDir,
             "--port", port,
             "--get-file", fileIndex,
             "--filename", photo.filename,
@@ -225,7 +225,9 @@ class IosConnector(
     private fun requirePort(device: DeviceInfo): String =
         device.gphotoPort ?: throw DeviceException("No gphoto2 port for device: ${device.displayName}")
 
-    private fun runGphoto2(vararg args: String, workingDir: Path? = null): String {
+    private fun runGphoto2(vararg args: String): String = runGphoto2InDir(null, *args)
+
+    private fun runGphoto2InDir(workingDir: Path?, vararg args: String): String {
         val cmd = buildList {
             add(gphoto2Bin)
             addAll(args)

src/main/kotlin/com/bolenpad/photophetch/ui/BrowseScreen.kt

@@ -8,7 +8,7 @@ import androidx.compose.foundation.lazy.grid.GridCells
 import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.foundation.lazy.grid.items
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.CheckCircle
 import androidx.compose.material.icons.filled.DateRange
 import androidx.compose.material.icons.filled.RadioButtonUnchecked
@@ -133,7 +133,7 @@ private fun BrowseTopBar(
         title = { Text(device?.displayName ?: "Browse Photos") },
         navigationIcon = {
             IconButton(onClick = onBack) {
-                Icon(Icons.Default.ArrowBack, contentDescription = "Back")
+                Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = "Back")
             }
         },
         actions = {

src/main/kotlin/com/bolenpad/photophetch/ui/ConnectScreen.kt

@@ -6,7 +6,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.PhoneAndroid
 import androidx.compose.material.icons.filled.Refresh
 import androidx.compose.material.icons.filled.Settings
-import androidx.compose.material.icons.filled.SmartPhone
+import androidx.compose.material.icons.filled.Smartphone
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -153,7 +153,7 @@ private fun DeviceCard(device: DeviceInfo, onClick: () -> Unit) {
             verticalAlignment = Alignment.CenterVertically,
         ) {
             Icon(
-                if (device.type == DeviceType.IOS) Icons.Default.SmartPhone else Icons.Default.PhoneAndroid,
+                if (device.type == DeviceType.IOS) Icons.Default.Smartphone else Icons.Default.PhoneAndroid,
                 contentDescription = null,
                 modifier = Modifier.size(32.dp),
                 tint = MaterialTheme.colorScheme.primary,

src/main/kotlin/com/bolenpad/photophetch/ui/ImportScreen.kt

@@ -2,7 +2,7 @@ package com.bolenpad.photophetch.ui
 
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.FolderOpen
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
@@ -36,7 +36,7 @@ fun ImportScreen(state: AppState) {
         // Header
         Row(verticalAlignment = Alignment.CenterVertically) {
             IconButton(onClick = { state.navigateTo(Screen.BROWSE) }) {
-                Icon(Icons.Default.ArrowBack, contentDescription = "Back")
+                Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = "Back")
             }
             Text("Import Configuration", style = MaterialTheme.typography.headlineSmall)
         }

src/main/kotlin/com/bolenpad/photophetch/ui/SettingsScreen.kt

@@ -2,7 +2,7 @@ package com.bolenpad.photophetch.ui
 
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
@@ -24,7 +24,7 @@ fun SettingsScreen(state: AppState) {
     ) {
         Row(verticalAlignment = Alignment.CenterVertically) {
             IconButton(onClick = { state.navigateTo(Screen.CONNECT) }) {
-                Icon(Icons.Default.ArrowBack, contentDescription = "Back")
+                Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = "Back")
             }
             Text("Settings", style = MaterialTheme.typography.headlineSmall)
         }

src/main/kotlin/com/bolenpad/photophetch/util/ExifFilter.kt

@@ -58,33 +58,30 @@ object ExifFilter {
         photos: List<PhonePhoto>,
         stripLivePhotoMotion: Boolean = true,
     ): List<PhonePhoto> {
-        return photos.filter { photo ->
-            // Always exclude Live Photo motion clips if requested
-            if (stripLivePhotoMotion && photo.isLivePhotoMotion) return@filter false
+        return photos.filter { photo -> isCameraRollOriginal(photo, stripLivePhotoMotion) }
+    }
 
-            // Exclude if the device path contains a known non-camera directory
-            val pathLower = photo.devicePath.lowercase()
-            if (excludedPathFragments.any { fragment -> pathLower.contains(fragment) }) {
-                return@filter false
-            }
+    private fun isCameraRollOriginal(photo: PhonePhoto, stripLivePhotoMotion: Boolean): Boolean {
+        // Always exclude Live Photo motion clips if requested
+        if (stripLivePhotoMotion && photo.isLivePhotoMotion) return false
 
-            // Exclude if filename starts with a screenshot prefix
-            val filenameLower = photo.filename.lowercase()
-            if (screenshotFilePrefixes.any { prefix -> filenameLower.startsWith(prefix) }) {
-                return@filter false
-            }
+        // Exclude if the device path contains a known non-camera directory
+        val pathLower = photo.devicePath.lowercase()
+        if (excludedPathFragments.any { fragment -> pathLower.contains(fragment) }) return false
 
-            // Exclude files with no EXIF Make/Model AND not in a DCIM path
-            // (indicates received image or screenshot — not a camera original)
-            val hasExif = photo.exifMake != null || photo.exifModel != null
-            val inDcim = pathLower.contains("dcim")
-            if (!hasExif && !inDcim) return@filter false
+        // Exclude if filename starts with a screenshot prefix
+        val filenameLower = photo.filename.lowercase()
+        if (screenshotFilePrefixes.any { prefix -> filenameLower.startsWith(prefix) }) return false
 
-            // Skip files with completely unknown media type
-            if (photo.mediaType == MediaType.UNKNOWN) return@filter false
+        // Exclude files with no EXIF Make/Model AND not in a DCIM path
+        val hasExif = photo.exifMake != null || photo.exifModel != null
+        val inDcim = pathLower.contains("dcim")
+        if (!hasExif && !inDcim) return false
 
-            true
-        }
+        // Skip files with completely unknown media type
+        if (photo.mediaType == MediaType.UNKNOWN) return false
+
+        return true
     }
 
     /**