feat: handle email-only posts in PostUploadWorker, Feed, and Detail screens

Phase 4b.3: Sent status in Feed + PostUploadWorker handling.
- PostUploadWorker: handle QUEUED_EMAIL_ONLY with email_only=true on GhostPost,
  pass newsletter slug to repository.createPost()
- FeedViewModel: map GhostPost email_only/sent status to FeedPost.emailOnly
- FeedScreen FilterChipsBar: add "Sent" chip (magenta, only when newsletter enabled)
- FeedScreen PostCardContent: show envelope icon + "Sent" in magenta for sent posts,
  replace "Share" with "Copy content" for email-only posts
- FeedScreen StatusBadge: handle sent/emailOnly status
- DetailScreen: show email-only info card with errorContainer color when post is
  sent via email only, noting it's not visible on the blog

app/src/main/java/com/swoosh/microblog/ui/detail/DetailScreen.kt

@@ -23,6 +23,7 @@ import androidx.compose.material.icons.automirrored.filled.Article
 import androidx.compose.material.icons.filled.ContentCopy
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.filled.Edit
+import androidx.compose.material.icons.filled.Email
 import androidx.compose.material.icons.filled.ExpandLess
 import androidx.compose.material.icons.filled.ExpandMore
 import androidx.compose.material.icons.filled.Image
@@ -375,6 +376,43 @@ fun DetailScreen(
                     PostStatsSection(post)
                 }
             }
+
+            // Email-only info card
+            if (post.status == "sent" || post.emailOnly) {
+                Spacer(modifier = Modifier.height(16.dp))
+                Card(
+                    modifier = Modifier.fillMaxWidth(),
+                    colors = CardDefaults.cardColors(
+                        containerColor = MaterialTheme.colorScheme.errorContainer
+                    )
+                ) {
+                    Row(
+                        modifier = Modifier.padding(16.dp),
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        Icon(
+                            Icons.Default.Email,
+                            contentDescription = null,
+                            tint = MaterialTheme.colorScheme.onErrorContainer,
+                            modifier = Modifier.size(24.dp)
+                        )
+                        Spacer(modifier = Modifier.width(12.dp))
+                        Column {
+                            Text(
+                                text = "\u2709 SENT VIA EMAIL ONLY",
+                                style = MaterialTheme.typography.labelLarge,
+                                color = MaterialTheme.colorScheme.onErrorContainer
+                            )
+                            Spacer(modifier = Modifier.height(4.dp))
+                            Text(
+                                text = "This post is not visible on your blog.",
+                                style = MaterialTheme.typography.bodySmall,
+                                color = MaterialTheme.colorScheme.onErrorContainer.copy(alpha = 0.8f)
+                            )
+                        }
+                    }
+                }
+            }
         }
     }
 

app/src/main/java/com/swoosh/microblog/ui/feed/FeedScreen.kt

@@ -767,6 +767,12 @@ fun FilterChipsBar(
     activeFilter: PostFilter,
     onFilterSelected: (PostFilter) -> Unit
 ) {
+    val context = LocalContext.current
+    val newsletterEnabled = remember {
+        com.swoosh.microblog.data.NewsletterPreferences(context).isNewsletterEnabled()
+    }
+    val sentColor = Color(0xFF6A1B9A) // magenta
+
     Row(
         modifier = Modifier
             .fillMaxWidth()
@@ -775,19 +781,29 @@ fun FilterChipsBar(
         horizontalArrangement = Arrangement.spacedBy(8.dp)
     ) {
         PostFilter.values().forEach { filter ->
+            // Only show SENT chip when newsletter is enabled
+            if (filter == PostFilter.SENT && !newsletterEnabled) return@forEach
+
             val selected = filter == activeFilter
             val containerColor by animateColorAsState(
-                targetValue = if (selected)
-                    MaterialTheme.colorScheme.primaryContainer
-                else
-                    MaterialTheme.colorScheme.surface,
+                targetValue = when {
+                    selected && filter == PostFilter.SENT -> sentColor.copy(alpha = 0.2f)
+                    selected -> MaterialTheme.colorScheme.primaryContainer
+                    else -> MaterialTheme.colorScheme.surface
+                },
                 animationSpec = SwooshMotion.quick(),
                 label = "chipColor"
             )
             FilterChip(
                 selected = selected,
                 onClick = { onFilterSelected(filter) },
-                label = { Text(filter.displayName) },
+                label = {
+                    Text(
+                        filter.displayName,
+                        color = if (selected && filter == PostFilter.SENT) sentColor
+                                else Color.Unspecified
+                    )
+                },
                 colors = FilterChipDefaults.filterChipColors(
                     selectedContainerColor = containerColor
                 )
@@ -1647,12 +1663,15 @@ fun PostCardContent(
             val stats = remember(post.textContent, post.imageUrl, post.linkUrl) {
                 PostStats.fromFeedPost(post)
             }
+            val isSent = post.status == "sent" || post.emailOnly
             val statusLabel = when {
                 post.queueStatus != QueueStatus.NONE -> "Pending"
+                isSent -> "Sent"
                 else -> post.status.replaceFirstChar { it.uppercase() }
             }
             val statusColor = when {
                 post.queueStatus != QueueStatus.NONE -> Color(0xFFE65100)
+                isSent -> Color(0xFF6A1B9A)
                 post.status == "published" -> Color(0xFF2E7D32)
                 post.status == "scheduled" -> Color(0xFF1565C0)
                 else -> Color(0xFF7B1FA2)
@@ -1661,19 +1680,28 @@ fun PostCardContent(
                 verticalAlignment = Alignment.CenterVertically,
                 horizontalArrangement = Arrangement.spacedBy(6.dp)
             ) {
+                if (isSent) {
+                    Icon(
+                        Icons.Default.Email,
+                        contentDescription = "Sent",
+                        modifier = Modifier.size(12.dp),
+                        tint = statusColor
+                    )
+                } else {
                     Box(
                         modifier = Modifier
                             .size(8.dp)
                             .clip(CircleShape)
                             .background(statusColor)
                     )
+                }
                 Text(
                     text = statusLabel,
                     style = MaterialTheme.typography.labelSmall.copy(fontWeight = FontWeight.Bold),
                     color = statusColor
                 )
                 Text(
-                    text = "·",
+                    text = "\u00B7",
                     style = MaterialTheme.typography.labelSmall,
                     color = MaterialTheme.colorScheme.onSurfaceVariant
                 )
@@ -1714,8 +1742,35 @@ fun PostCardContent(
                     )
                 }
 
-                // Share action (copies link to clipboard)
-                if (isPublished && hasShareableUrl) {
+                // Share / Copy content action
+                if (isSent) {
+                    // For sent (email-only) posts, show "Copy content" instead of "Share"
+                    val copyContext = LocalContext.current
+                    Column(
+                        horizontalAlignment = Alignment.CenterHorizontally,
+                        modifier = Modifier.clickable {
+                            val clipboard = copyContext.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                            clipboard.setPrimaryClip(ClipData.newPlainText("Post content", post.textContent))
+                            snackbarHostState?.let { host ->
+                                coroutineScope.launch {
+                                    host.showSnackbar("Content copied to clipboard")
+                                }
+                            }
+                        }
+                    ) {
+                        Icon(
+                            Icons.Default.ContentCopy,
+                            contentDescription = "Copy content",
+                            modifier = Modifier.size(24.dp),
+                            tint = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                        Text(
+                            text = "Copy",
+                            style = MaterialTheme.typography.labelSmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                } else if (isPublished && hasShareableUrl) {
                     Column(
                         horizontalAlignment = Alignment.CenterHorizontally,
                         modifier = Modifier.clickable {
@@ -2168,8 +2223,10 @@ fun buildHighlightedString(
 
 @Composable
 fun StatusBadge(post: FeedPost) {
+    val isSent = post.status == "sent" || post.emailOnly
     val (label, containerColor, labelColor) = when {
         post.queueStatus != QueueStatus.NONE -> Triple("Pending", Color(0xFFFFF3E0), Color(0xFFE65100))
+        isSent -> Triple("Sent", Color(0xFFF3E5F5), Color(0xFF6A1B9A))
         post.status == "published" -> Triple("Published", Color(0xFFE8F5E9), Color(0xFF2E7D32))
         post.status == "scheduled" -> Triple("Scheduled", Color(0xFFE3F2FD), Color(0xFF1565C0))
         else -> Triple("Draft", Color(0xFFF3E5F5), Color(0xFF7B1FA2))

app/src/main/java/com/swoosh/microblog/ui/feed/FeedViewModel.kt

@@ -536,6 +536,7 @@ class FeedViewModel(application: Application) : AndroidViewModel(application) {
             }
         }
         val fileData = extractFileCardFromMobiledoc(mobiledoc)
+        val isEmailOnly = status == "sent" || email_only == true
         return FeedPost(
             ghostId = id,
             slug = slug,
@@ -558,7 +559,8 @@ class FeedViewModel(application: Application) : AndroidViewModel(application) {
             updatedAt = updated_at,
             isLocal = false,
             fileUrl = fileData?.first,
-            fileName = fileData?.second
+            fileName = fileData?.second,
+            emailOnly = isEmailOnly
         )
     }
 
@@ -645,7 +647,8 @@ class FeedViewModel(application: Application) : AndroidViewModel(application) {
             isLocal = true,
             queueStatus = queueStatus,
             fileUrl = uploadedFileUrl ?: fileUri,
-            fileName = fileName
+            fileName = fileName,
+            emailOnly = emailOnly
         )
     }
 

app/src/main/java/com/swoosh/microblog/worker/PostUploadWorker.kt

@@ -94,12 +94,15 @@ class PostUploadWorker(
             }
             val ghostTags = tagNames.map { GhostTag(name = it) }
 
+            val isEmailOnly = post.queueStatus == QueueStatus.QUEUED_EMAIL_ONLY
+
             val ghostPost = GhostPost(
                 title = post.title,
                 mobiledoc = mobiledoc,
                 status = when (post.queueStatus) {
                     QueueStatus.QUEUED_PUBLISH -> "published"
                     QueueStatus.QUEUED_SCHEDULED -> "scheduled"
+                    QueueStatus.QUEUED_EMAIL_ONLY -> "published"
                     else -> "draft"
                 },
                 featured = post.featured,
@@ -107,13 +110,17 @@ class PostUploadWorker(
                 feature_image_alt = post.imageAlt,
                 published_at = post.scheduledAt,
                 visibility = "public",
-                tags = ghostTags.ifEmpty { null }
+                tags = ghostTags.ifEmpty { null },
+                email_only = if (isEmailOnly) true else null
             )
 
+            // Determine newsletter slug for email-only or newsletter posts
+            val newsletterSlug = post.newsletterSlug
+
             val result = if (post.ghostId != null) {
-                repository.updatePost(post.ghostId, ghostPost)
+                repository.updatePost(post.ghostId, ghostPost, newsletter = newsletterSlug)
             } else {
-                repository.createPost(ghostPost)
+                repository.createPost(ghostPost, newsletter = newsletterSlug)
             }
 
             result.fold(