feat(ui): modernização visual Material 3 (v0.3.0)

- Edge-to-edge (enableEdgeToEdge) com Scaffold/insets em todas as telas
- Compose BOM 2024.12 -> 2025.06; tipografia e tema com dynamic color
- SyncBanner colorido removido -> SyncStatusRow compacto com chips M3
  acionáveis (sync agora / abrir config / erro em errorContainer)
- Lista: busca por título/conteúdo/tag (filterNotes testado),
  pull-to-refresh, animateItem, contentType, estado vazio com CTA
- Ícones no lugar de emoji (pasta, presença, exclusão, aviso)
- Editor: chip de presença acessível; imports limpos
- Teste unitário de busca (NoteSearchTest)
- versionCode 5 / versionName 0.3.0

app/src/main/java/com/labexposed/notas/MainActivity.kt

@@ -3,30 +3,16 @@ package com.labexposed.notas
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Text
+import androidx.activity.enableEdgeToEdge
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.lifecycle.compose.LifecycleEventEffect
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
 import androidx.lifecycle.Lifecycle
-import com.labexposed.notas.domain.SyncPhase
-import com.labexposed.notas.domain.SyncUiState
 import com.labexposed.notas.ui.EditorScreen
 import com.labexposed.notas.ui.NotesListScreen
 import com.labexposed.notas.ui.NotasViewModel
@@ -36,6 +22,7 @@ import com.labexposed.notas.ui.theme.NotasTheme
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
         setContent {
             NotasTheme { NotasApp_() }
         }
@@ -68,36 +55,3 @@ private fun NotasApp_(vm: NotasViewModel = viewModel()) {
         }
     }
 }
-
-/** Banner de status: Offline · Sincronizando · Sincronizado · Erro · pendências. */
-@Composable
-fun SyncBanner(state: SyncUiState, modifier: Modifier = Modifier) {
-    val (bg, fg, label) = when (state.phase) {
-        SyncPhase.NotConfigured -> Quinteto(Color(0xFF9A9A9A), Color.White, "Configure o servidor ⚙")
-        SyncPhase.Offline -> Quinteto(Color(0xFF6F6F6F), Color.White, "Offline — ${state.pendingCount} alteração(ões) na fila")
-        SyncPhase.Syncing -> Quinteto(Color(0xFF3584E4), Color.White, "Sincronizando…")
-        SyncPhase.Synced -> {
-            val pend = if (state.pendingCount > 0) " · ${state.pendingCount} pendente(s)" else ""
-            val conf = if (state.conflicts > 0) " · ⚠ ${state.conflicts} conflito(s)" else ""
-            val hora = java.text.DateFormat.getTimeInstance(java.text.DateFormat.SHORT)
-                .format(java.util.Date(state.lastSyncAt))
-            Quinteto(Color(0xFF2EC27E), Color(0xFF073042), "Sincronizado às $hora$pend$conf")
-        }
-        SyncPhase.Error -> Quinteto(Color(0xFFE01B24), Color.White, "Erro: ${state.message}")
-        SyncPhase.Unauthorized -> Quinteto(Color(0xFFE01B24), Color.White, "Token inválido — revise em Servidor")
-    }
-    Surface(color = bg, shape = RoundedCornerShape(bottomStart = 12.dp, bottomEnd = 12.dp)) {
-        Row(
-            modifier = modifier.fillMaxWidth().padding(horizontal = 16.dp, vertical = 8.dp),
-            verticalAlignment = Alignment.CenterVertically,
-            horizontalArrangement = Arrangement.SpaceBetween,
-        ) {
-            Text(label, color = fg, style = MaterialTheme.typography.labelLarge)
-            if (state.dirtyCount > 0 && state.phase == SyncPhase.Synced) {
-                Text("● ${state.dirtyCount} não enviado(s)", color = fg, style = MaterialTheme.typography.labelMedium)
-            }
-        }
-    }
-}
-
-private data class Quinteto(val bg: Color, val fg: Color, val label: String)