feat: Add dedicated pinned bookmarks screen with paginated data loading

- Add getPinnedLinksPaged() query to LinkDao for paginated pinned link retrieval
- Implement getPinnedLinksStream() in LinkRepository with PagingConfig for efficient data loading
- Create PinnedScreen navigation route and composable in NavGraph
- Add "Épinglés" (Pinned) drawer navigation item with PushPin icon in FeedScreen
- Wire navigation callbacks from FeedScreen through NavGraph to PinnedScreen

app/src/main/java/com/shaarit/data/local/dao/LinkDao.kt

@@ -149,6 +149,9 @@ interface LinkDao {
     @Query("SELECT * FROM links WHERE is_pinned = 1 ORDER BY created_at DESC")
     fun getPinnedLinks(): Flow<List<LinkEntity>>
     
+    @Query("SELECT * FROM links WHERE is_pinned = 1 ORDER BY created_at DESC")
+    fun getPinnedLinksPaged(): PagingSource<Int, LinkEntity>
+    
     // ====== Sync ======
     
     @Query("SELECT * FROM links WHERE sync_status = :status")

app/src/main/java/com/shaarit/data/repository/LinkRepositoryImpl.kt

@@ -513,6 +513,15 @@ constructor(
             pagingData.map { it.toDomainModel() }
         }
     }
+    
+    override fun getPinnedLinksStream(): Flow<PagingData<ShaarliLink>> {
+        return Pager(
+            config = PagingConfig(pageSize = 20, enablePlaceholders = false),
+            pagingSourceFactory = { linkDao.getPinnedLinksPaged() }
+        ).flow.map { pagingData ->
+            pagingData.map { it.toDomainModel() }
+        }
+    }
 
     private fun parseExistingLink(errorBody: String?): LinkDto? {
         if (errorBody.isNullOrBlank()) return null

app/src/main/java/com/shaarit/domain/repository/LinkRepository.kt

@@ -61,4 +61,6 @@ interface LinkRepository {
     suspend fun updateLinkClassification(id: Int, contentType: String?, siteName: String?, tagsToAdd: List<String>? = null): Result<Unit>
     
     fun getDeadLinksStream(): Flow<PagingData<ShaarliLink>>
+    
+    fun getPinnedLinksStream(): Flow<PagingData<ShaarliLink>>
 }

app/src/main/java/com/shaarit/presentation/feed/FeedScreen.kt

@@ -277,6 +277,7 @@ fun FeedScreen(
     onNavigateToRandom: () -> Unit = {},
     onNavigateToHelp: () -> Unit = {},
     onNavigateToDeadLinks: () -> Unit = {},
+    onNavigateToPinned: () -> Unit = {},
     initialTagFilter: String? = null,
     initialCollectionId: Long? = null,
     viewModel: FeedViewModel = hiltViewModel()
@@ -405,6 +406,15 @@ fun FeedScreen(
                                 }
                             )
                             
+                            DrawerNavigationItem(
+                                icon = Icons.Default.PushPin,
+                                label = "Épinglés",
+                                onClick = {
+                                    scope.launch { drawerState.close() }
+                                    onNavigateToPinned()
+                                }
+                            )
+                            
                             DrawerNavigationItem(
                                 icon = Icons.Default.StickyNote2,
                                 label = "Notes",

app/src/main/java/com/shaarit/presentation/nav/NavGraph.kt

@@ -43,6 +43,7 @@ sealed class Screen(val route: String) {
     object Settings : Screen("settings")
     object Help : Screen("help")
     object DeadLinks : Screen("dead_links")
+    object Pinned : Screen("pinned")
 }
 
 @Composable
@@ -128,6 +129,7 @@ fun AppNavGraph(
                 onNavigateToRandom = { },
                 onNavigateToHelp = { navController.navigate(Screen.Help.route) },
                 onNavigateToDeadLinks = { navController.navigate(Screen.DeadLinks.route) },
+                onNavigateToPinned = { navController.navigate(Screen.Pinned.route) },
                 initialTagFilter = tag,
                 initialCollectionId = collectionId
             )
@@ -270,5 +272,16 @@ fun AppNavGraph(
                 }
             )
         }
+
+        composable(
+            route = Screen.Pinned.route
+        ) {
+            com.shaarit.presentation.pinned.PinnedScreen(
+                onNavigateBack = { navController.popBackStack() },
+                onNavigateToEdit = { linkId ->
+                    navController.navigate(Screen.Edit.createRoute(linkId))
+                }
+            )
+        }
     }
 }

app/src/main/java/com/shaarit/presentation/pinned/PinnedScreen.kt

@@ -0,0 +1,137 @@
+package com.shaarit.presentation.pinned
+
+import android.content.Intent
+import android.net.Uri
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material.icons.filled.PushPin
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.paging.LoadState
+import androidx.paging.compose.collectAsLazyPagingItems
+import com.shaarit.presentation.feed.ListViewItem
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun PinnedScreen(
+    onNavigateBack: () -> Unit,
+    onNavigateToEdit: (Int) -> Unit,
+    viewModel: PinnedViewModel = hiltViewModel()
+) {
+    val pagingItems = viewModel.pagedPinnedLinks.collectAsLazyPagingItems()
+    val context = LocalContext.current
+    val snackbarHostState = remember { SnackbarHostState() }
+
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(
+                brush = Brush.verticalGradient(
+                    colors = listOf(MaterialTheme.colorScheme.background, MaterialTheme.colorScheme.surface)
+                )
+            )
+    ) {
+        Scaffold(
+            snackbarHost = { SnackbarHost(snackbarHostState) },
+            topBar = {
+                TopAppBar(
+                    title = {
+                        Text(
+                            "Épinglés",
+                            style = MaterialTheme.typography.headlineSmall,
+                            fontWeight = FontWeight.Bold,
+                            color = MaterialTheme.colorScheme.onBackground
+                        )
+                    },
+                    navigationIcon = {
+                        IconButton(onClick = onNavigateBack) {
+                            Icon(
+                                Icons.Default.ArrowBack,
+                                contentDescription = "Retour",
+                                tint = MaterialTheme.colorScheme.onBackground
+                            )
+                        }
+                    },
+                    colors = TopAppBarDefaults.topAppBarColors(
+                        containerColor = MaterialTheme.colorScheme.background.copy(alpha = 0.9f),
+                        titleContentColor = MaterialTheme.colorScheme.onBackground
+                    )
+                )
+            },
+            containerColor = Color.Transparent
+        ) { paddingValues ->
+            Box(
+                modifier = Modifier
+                    .padding(paddingValues)
+                    .fillMaxSize()
+            ) {
+                if (pagingItems.loadState.refresh is LoadState.Loading && pagingItems.itemCount == 0) {
+                    Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                        CircularProgressIndicator(color = MaterialTheme.colorScheme.primary)
+                    }
+                } else if (pagingItems.itemCount == 0) {
+                    Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                        Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                            Icon(
+                                imageVector = Icons.Default.PushPin,
+                                contentDescription = null,
+                                tint = MaterialTheme.colorScheme.outline,
+                                modifier = Modifier.size(64.dp)
+                            )
+                            Spacer(modifier = Modifier.height(16.dp))
+                            Text(
+                                "Aucun bookmark épinglé",
+                                style = MaterialTheme.typography.titleMedium,
+                                color = MaterialTheme.colorScheme.onSurfaceVariant
+                            )
+                            Text(
+                                "Épinglez vos bookmarks favoris avec le bouton 📌",
+                                style = MaterialTheme.typography.bodyMedium,
+                                color = MaterialTheme.colorScheme.outline
+                            )
+                        }
+                    }
+                } else {
+                    LazyColumn(
+                        modifier = Modifier.fillMaxSize(),
+                        contentPadding = PaddingValues(16.dp),
+                        verticalArrangement = Arrangement.spacedBy(16.dp)
+                    ) {
+                        items(count = pagingItems.itemCount) { index ->
+                            val link = pagingItems[index]
+                            if (link != null) {
+                                ListViewItem(
+                                    link = link,
+                                    onItemClick = {
+                                        val intent = Intent(Intent.ACTION_VIEW, Uri.parse(link.url))
+                                        context.startActivity(intent)
+                                    },
+                                    onLinkClick = { url ->
+                                        val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
+                                        context.startActivity(intent)
+                                    },
+                                    onEditClick = onNavigateToEdit,
+                                    onDeleteClick = { viewModel.deleteLink(link.id) },
+                                    onTagClick = { },
+                                    onViewClick = { },
+                                    onTogglePin = { id -> viewModel.togglePin(id) }
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/shaarit/presentation/pinned/PinnedViewModel.kt

@@ -0,0 +1,38 @@
+package com.shaarit.presentation.pinned
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import androidx.paging.PagingData
+import androidx.paging.cachedIn
+import com.shaarit.data.local.dao.LinkDao
+import com.shaarit.domain.model.ShaarliLink
+import com.shaarit.domain.repository.LinkRepository
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class PinnedViewModel @Inject constructor(
+    private val linkRepository: LinkRepository,
+    private val linkDao: LinkDao
+) : ViewModel() {
+
+    val pagedPinnedLinks: Flow<PagingData<ShaarliLink>> =
+        linkRepository.getPinnedLinksStream()
+            .cachedIn(viewModelScope)
+
+    fun togglePin(id: Int) {
+        viewModelScope.launch {
+            linkDao.getLinkById(id)?.let { link ->
+                linkDao.updatePinStatus(id, !link.isPinned)
+            }
+        }
+    }
+
+    fun deleteLink(id: Int) {
+        viewModelScope.launch {
+            linkRepository.deleteLink(id)
+        }
+    }
+}