v1.0.47: built-in folder browsers, icon crop fix, nav bar button fix

- Replace SAF document picker with custom LocalBrowserDialog (File API,
  quick-access shortcuts, breadcrumb nav, search, folder-only listing)
- Rewrite RemoteBrowserDialog as full-screen dialog with breadcrumbs,
  search, and new-folder creation; add navigateToBreadcrumb/createFolder
  to RemoteBrowserViewModel
- Fix Select button cut off by navigation bar in both browsers: wrap
  button in Column(navigationBarsPadding()) so the button sits above
  the nav bar rather than behind it
- Tighten icon foreground crop to remove excess black border

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/main/kotlin/com/syncflow/ui/addpair/AddPairScreen.kt

@@ -1,9 +1,5 @@
 package com.syncflow.ui.addpair
 
-import android.content.Intent
-import android.net.Uri
-import androidx.activity.compose.rememberLauncherForActivityResult
-import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.rememberScrollState
@@ -15,13 +11,13 @@ import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import com.syncflow.domain.model.*
+import com.syncflow.ui.browser.LocalBrowserDialog
 import com.syncflow.ui.browser.RemoteBrowserDialog
 import java.time.DayOfWeek
 
@@ -31,17 +27,18 @@ fun AddPairScreen(onDone: () -> Unit, vm: AddPairViewModel = hiltViewModel()) {
     val s by vm.state.collectAsState()
     LaunchedEffect(s.done) { if (s.done) onDone() }
 
-    val context = LocalContext.current
     var showRemoteBrowser by remember { mutableStateOf(false) }
+    var showLocalBrowser by remember { mutableStateOf(false) }
 
-    val dirPicker = rememberLauncherForActivityResult(ActivityResultContracts.OpenDocumentTree()) { uri: Uri? ->
-        uri?.let {
-            context.contentResolver.takePersistableUriPermission(
-                it,
-                Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION,
-            )
-            vm.update { copy(localPath = it.toString()) }
-        }
+    if (showLocalBrowser) {
+        LocalBrowserDialog(
+            initialPath = s.localPath.ifBlank { "" },
+            onSelect = { path ->
+                vm.update { copy(localPath = path) }
+                showLocalBrowser = false
+            },
+            onDismiss = { showLocalBrowser = false },
+        )
     }
 
     if (showRemoteBrowser && s.selectedAccountId != -1L) {
@@ -113,7 +110,7 @@ fun AddPairScreen(onDone: () -> Unit, vm: AddPairViewModel = hiltViewModel()) {
                     label = { Text("Local folder") },
                     leadingIcon = { Icon(Icons.Default.PhoneAndroid, null) },
                     trailingIcon = {
-                        IconButton(onClick = { dirPicker.launch(null) }) {
+                        IconButton(onClick = { showLocalBrowser = true }) {
                             Icon(Icons.Default.FolderOpen, "Browse")
                         }
                     },