diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphDetail.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/detail/AfternoteDetailRoute.kt
similarity index 77%
rename from feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphDetail.kt
rename to feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/detail/AfternoteDetailRoute.kt
index dc77582842..08bc3fef0b 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphDetail.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/detail/AfternoteDetailRoute.kt
@@ -1,4 +1,4 @@
-package com.afternote.feature.afternote.presentation.author.navigation
+package com.afternote.feature.afternote.presentation.author.detail
 
 import androidx.annotation.StringRes
 import androidx.compose.foundation.background
@@ -41,88 +41,11 @@ import com.afternote.core.ui.theme.AfternoteDesign
 import com.afternote.core.ui.topbar.DetailTopBar
 import com.afternote.feature.afternote.domain.AfternoteType
 import com.afternote.feature.afternote.presentation.R
-import com.afternote.feature.afternote.presentation.author.detail.AfternoteDetailDeleteResult
-import com.afternote.feature.afternote.presentation.author.detail.AfternoteDetailUiState
-import com.afternote.feature.afternote.presentation.author.detail.AfternoteDetailViewModel
-import com.afternote.feature.afternote.presentation.author.detail.DetailContentUiModel
-import com.afternote.feature.afternote.presentation.author.detail.GalleryDetailScreen
-import com.afternote.feature.afternote.presentation.author.detail.MemorialDetailScreen
 import com.afternote.feature.afternote.presentation.author.detail.account.AccountDetailScreen
+import com.afternote.feature.afternote.presentation.shared.detail.DesignPendingDetailContent
+import com.afternote.feature.afternote.presentation.shared.detail.DetailLoadErrorContent
 import kotlinx.coroutines.launch
 
-@Composable
-fun DesignPendingDetailContent(onBackClick: () -> Unit) {
-    Scaffold(
-        modifier = Modifier.fillMaxSize(),
-        containerColor = Color.Transparent,
-        topBar = {
-            DetailTopBar(title = "", onBackClick = onBackClick)
-        },
-    ) { paddingValues ->
-        Box(
-            modifier =
-                Modifier
-                    .fillMaxSize()
-                    .padding(paddingValues),
-            contentAlignment = Alignment.Center,
-        ) {
-            Text(text = stringResource(R.string.design_pending))
-        }
-    }
-}
-
-/**
- * 상세 데이터 로드 실패 화면.
- *
- * [com.afternote.feature.afternote.presentation.author.detail.AfternoteDetailUiState.Error] 계약대로
- * [messageRes] 를 [stringResource] 로 변환해 표시한다 (없으면 [R.string.afternote_detail_load_error] 폴백).
- * 예외 원문은 받지 않는다 — 서버 5xx 본문·역직렬화 예외 메시지에 내부 SQL·응답 원문 발췌가 섞여 오기 때문.
- *
- * 표시 방식 통일(#446) 결론이 나오면 이 컴포저블의 본문 표현만 교체한다 — Route 의 Error 분기 배선은 유지.
- * [DesignPendingDetailContent] 는 ESTATE 등 아직 구현되지 않은 상세 타입의 폴백으로만 유지한다.
- *
- * @param messageRes 앱에 박힌 문자열 리소스 ID(`R.string.*`). `@StringRes` 는 이 Int 가 임의 정수가 아니라
- *   string 리소스 id 임을 Lint 에 알리는 표식이며, [stringResource] 로 실제 텍스트로 변환한다.
- * @param onRetryClick 재조회 진입점. `null` 이면 재시도 버튼을 그리지 않는다 — 잘못된 항목 ID 처럼
- *   같은 요청을 다시 보내도 결과가 달라지지 않는 실패에 쓴다.
- */
-@Composable
-fun DetailLoadErrorContent(
-    @StringRes messageRes: Int?,
-    onBackClick: () -> Unit,
-    onRetryClick: (() -> Unit)? = null,
-) {
-    Scaffold(
-        modifier = Modifier.fillMaxSize(),
-        containerColor = Color.Transparent,
-        topBar = {
-            DetailTopBar(title = "", onBackClick = onBackClick)
-        },
-    ) { paddingValues ->
-        Box(
-            modifier =
-                Modifier
-                    .fillMaxSize()
-                    .padding(paddingValues),
-            contentAlignment = Alignment.Center,
-        ) {
-            Column(horizontalAlignment = Alignment.CenterHorizontally) {
-                Text(text = stringResource(messageRes ?: R.string.afternote_detail_load_error))
-                if (onRetryClick != null) {
-                    Spacer(modifier = Modifier.height(16.dp))
-                    TextButton(onClick = onRetryClick) {
-                        Text(
-                            text = stringResource(R.string.afternote_detail_retry),
-                            style = AfternoteDesign.typography.captionLargeB,
-                            color = AfternoteDesign.colors.gray9,
-                        )
-                    }
-                }
-            }
-        }
-    }
-}
-
 /**
  * 삭제 진행([com.afternote.feature.afternote.presentation.author.detail.AfternoteDetailUiState.Success.isDeleting])
  * 동안 상세 화면 위에 겹쳐 그리는 오버레이.
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphEditor.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorRoute.kt
similarity index 65%
rename from feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphEditor.kt
rename to feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorRoute.kt
index 618347d8e0..8a16bf3c4a 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphEditor.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorRoute.kt
@@ -1,6 +1,5 @@
-package com.afternote.feature.afternote.presentation.author.navigation
+package com.afternote.feature.afternote.presentation.author.editor
 
-import androidx.annotation.StringRes
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
@@ -10,95 +9,12 @@ import androidx.compose.ui.res.stringResource
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavBackStackEntry
 import com.afternote.feature.afternote.presentation.R
-import com.afternote.feature.afternote.presentation.author.editor.AfternoteEditorBody
-import com.afternote.feature.afternote.presentation.author.editor.AfternoteEditorScreen
-import com.afternote.feature.afternote.presentation.author.editor.AfternoteEditorViewModel
-import com.afternote.feature.afternote.presentation.author.editor.SaveAfternoteMemorialMedia
-import com.afternote.feature.afternote.presentation.author.editor.SaveAfternotePayloadBuilder
 import com.afternote.feature.afternote.presentation.author.editor.processing.AfternoteProcessingMethodDefaults
 import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteEditorError
 import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteEditorState
 import com.afternote.feature.afternote.presentation.author.editor.state.rememberAfternoteEditorState
 import com.afternote.feature.afternote.presentation.author.navigation.model.SELECTED_RECEIVER_ID_KEY
 
-@StringRes
-internal fun AfternoteEditorError.messageResId(): Int =
-    when (this) {
-        is AfternoteEditorError.Validation -> {
-            reason.messageResId
-        }
-
-        AfternoteEditorError.Network,
-        AfternoteEditorError.Server,
-        -> {
-            R.string.afternote_editor_save_failed_generic
-        }
-
-        AfternoteEditorError.ReceiverSelectionUnavailable -> {
-            R.string.afternote_editor_receiver_selection_unavailable
-        }
-
-        is AfternoteEditorError.Upload -> {
-            when (target) {
-                AfternoteEditorError.Upload.Target.THUMBNAIL -> R.string.afternote_editor_thumbnail_upload_failed
-                AfternoteEditorError.Upload.Target.SAVE_MEDIA -> R.string.afternote_editor_save_failed_generic
-            }
-        }
-    }
-
-/**
- * 수신자 선택 화면이 남긴 id 를 폼에 반영한다.
- *
- * 목록 로드 실패로 id 를 해석할 수 없으면 [AfternoteEditorViewModel.resolveSelectedReceiver] 가 재조회 후
- * 오류 이벤트를 세운다 — 선택이 조용히 사라지지 않는다 (#1405).
- */
-internal suspend fun tryApplyReceiverSelectionFromSavedState(
-    backStackEntry: NavBackStackEntry,
-    viewModel: AfternoteEditorViewModel,
-    state: AfternoteEditorState,
-) {
-    val id = backStackEntry.savedStateHandle[SELECTED_RECEIVER_ID_KEY] as? Long ?: return
-    backStackEntry.savedStateHandle.remove<Long>(SELECTED_RECEIVER_ID_KEY)
-    val receiver = viewModel.resolveSelectedReceiver(id) ?: return
-    state.addReceiverById(id, receiver.name, receiver.label)
-}
-
-internal fun buildOnRegisterClick(
-    editViewModel: AfternoteEditorViewModel,
-    state: AfternoteEditorState,
-): () -> Unit =
-    {
-        // 폼 스냅샷은 한 번만 읽는다 — 필드마다 다시 읽으면 조립 도중 갱신이 끼어 서로 다른 시점의 값이 섞인다.
-        val form = state.currentForm()
-        val payload =
-            SaveAfternotePayloadBuilder.build(
-                form = form,
-                messageBlocks = state.currentEditorMessageBlocks(),
-                accountId =
-                    state.idState.text
-                        .toString(),
-                password =
-                    state.passwordState.text
-                        .toString(),
-            )
-        editViewModel.saveAfternote(
-            payload = payload,
-            selectedReceiverIds = form.afternoteEditReceivers.map { it.id },
-            memorialMedia =
-                SaveAfternoteMemorialMedia(
-                    memorialVideoUrl = form.memorialVideoUrl,
-                    memorialThumbnailUrl = form.memorialThumbnailUrl,
-                    memorialPhotoUrl = form.memorialPhotoUrl,
-                    pickedMemorialPhotoUri = form.pickedMemorialPhotoUri,
-                ),
-        )
-    }
-
-internal fun shouldDeferEditorBaselineCapture(
-    isPrefillLoading: Boolean,
-    isProcessingMethodDefaultsInitializing: Boolean,
-): Boolean = isPrefillLoading || isProcessingMethodDefaultsInitializing
-
 /**
  * 작성자 에디터 화면: type-safe editor flow + 단방향 이벤트.
  *
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorRouteHelpers.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorRouteHelpers.kt
new file mode 100644
index 0000000000..5c2e5db792
--- /dev/null
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorRouteHelpers.kt
@@ -0,0 +1,88 @@
+package com.afternote.feature.afternote.presentation.author.editor
+
+import androidx.annotation.StringRes
+import androidx.navigation.NavBackStackEntry
+import com.afternote.feature.afternote.presentation.R
+import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteEditorError
+import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteEditorState
+import com.afternote.feature.afternote.presentation.author.navigation.model.SELECTED_RECEIVER_ID_KEY
+
+// 에디터 조립부가 쓰는 순수 헬퍼들이다. Route 파일에는 조립만 남긴다 (#1514).
+
+@StringRes
+internal fun AfternoteEditorError.messageResId(): Int =
+    when (this) {
+        is AfternoteEditorError.Validation -> {
+            reason.messageResId
+        }
+
+        AfternoteEditorError.Network,
+        AfternoteEditorError.Server,
+        -> {
+            R.string.afternote_editor_save_failed_generic
+        }
+
+        AfternoteEditorError.ReceiverSelectionUnavailable -> {
+            R.string.afternote_editor_receiver_selection_unavailable
+        }
+
+        is AfternoteEditorError.Upload -> {
+            when (target) {
+                AfternoteEditorError.Upload.Target.THUMBNAIL -> R.string.afternote_editor_thumbnail_upload_failed
+                AfternoteEditorError.Upload.Target.SAVE_MEDIA -> R.string.afternote_editor_save_failed_generic
+            }
+        }
+    }
+
+/**
+ * 수신자 선택 화면이 남긴 id 를 폼에 반영한다.
+ *
+ * 목록 로드 실패로 id 를 해석할 수 없으면 [AfternoteEditorViewModel.resolveSelectedReceiver] 가 재조회 후
+ * 오류 이벤트를 세운다 — 선택이 조용히 사라지지 않는다 (#1405).
+ */
+internal suspend fun tryApplyReceiverSelectionFromSavedState(
+    backStackEntry: NavBackStackEntry,
+    viewModel: AfternoteEditorViewModel,
+    state: AfternoteEditorState,
+) {
+    val id = backStackEntry.savedStateHandle[SELECTED_RECEIVER_ID_KEY] as? Long ?: return
+    backStackEntry.savedStateHandle.remove<Long>(SELECTED_RECEIVER_ID_KEY)
+    val receiver = viewModel.resolveSelectedReceiver(id) ?: return
+    state.addReceiverById(id, receiver.name, receiver.label)
+}
+
+internal fun buildOnRegisterClick(
+    editViewModel: AfternoteEditorViewModel,
+    state: AfternoteEditorState,
+): () -> Unit =
+    {
+        // 폼 스냅샷은 한 번만 읽는다 — 필드마다 다시 읽으면 조립 도중 갱신이 끼어 서로 다른 시점의 값이 섞인다.
+        val form = state.currentForm()
+        val payload =
+            SaveAfternotePayloadBuilder.build(
+                form = form,
+                messageBlocks = state.currentEditorMessageBlocks(),
+                accountId =
+                    state.idState.text
+                        .toString(),
+                password =
+                    state.passwordState.text
+                        .toString(),
+            )
+        editViewModel.saveAfternote(
+            payload = payload,
+            selectedReceiverIds = form.afternoteEditReceivers.map { it.id },
+            memorialMedia =
+                SaveAfternoteMemorialMedia(
+                    memorialVideoUrl = form.memorialVideoUrl,
+                    memorialThumbnailUrl = form.memorialThumbnailUrl,
+                    memorialPhotoUrl = form.memorialPhotoUrl,
+                    pickedMemorialPhotoUri = form.pickedMemorialPhotoUri,
+                ),
+        )
+    }
+
+internal fun shouldDeferEditorBaselineCapture(
+    isPrefillLoading: Boolean,
+    isProcessingMethodDefaultsInitializing: Boolean,
+): Boolean = isPrefillLoading || isProcessingMethodDefaultsInitializing
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/memorial/playlist/AddSongRoute.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/memorial/playlist/AddSongRoute.kt
new file mode 100644
index 0000000000..64e4eb98e5
--- /dev/null
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/memorial/playlist/AddSongRoute.kt
@@ -0,0 +1,16 @@
+package com.afternote.feature.afternote.presentation.author.editor.memorial.playlist
+
+import androidx.compose.runtime.Composable
+
+@Composable
+internal fun AfternoteAddSongNavigation(
+    onPopBackStack: () -> Unit,
+    onSongsAdded: (List<Song>) -> Unit,
+    viewModel: AddSongViewModel,
+) {
+    AddSongEntry(
+        viewModel = viewModel,
+        onBackClick = onPopBackStack,
+        onSongsAdded = onSongsAdded,
+    )
+}
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphSelectReceiver.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/receiver/select/SelectReceiverRoute.kt
similarity index 79%
rename from feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphSelectReceiver.kt
rename to feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/receiver/select/SelectReceiverRoute.kt
index 05bef4b11c..6727f5e534 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphSelectReceiver.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/editor/receiver/select/SelectReceiverRoute.kt
@@ -1,11 +1,9 @@
-package com.afternote.feature.afternote.presentation.author.navigation
+package com.afternote.feature.afternote.presentation.author.editor.receiver.select
 
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import com.afternote.feature.afternote.presentation.author.editor.receiver.select.SelectReceiverScreen
-import com.afternote.feature.afternote.presentation.author.editor.receiver.select.SelectReceiverViewModel
 
 /**
  * 수신자 선택 화면 진입점 (#540).
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphHome.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/home/AfternoteHomeRoute.kt
similarity index 75%
rename from feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphHome.kt
rename to feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/home/AfternoteHomeRoute.kt
index 0b5a6c12e3..2ace1523ac 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphHome.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/home/AfternoteHomeRoute.kt
@@ -1,8 +1,7 @@
-package com.afternote.feature.afternote.presentation.author.navigation
+package com.afternote.feature.afternote.presentation.author.home
 
 import androidx.compose.runtime.Composable
 import com.afternote.feature.afternote.domain.AfternoteType
-import com.afternote.feature.afternote.presentation.author.home.AfternoteHomeEntry
 
 @Composable
 internal fun AfternoteHomeNavigation(
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraph.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraph.kt
index 02346e5e6d..a8513a4f32 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraph.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraph.kt
@@ -10,10 +10,16 @@ import androidx.navigation.NavGraphBuilder
 import androidx.navigation.navigation
 import com.afternote.core.ui.Route
 import com.afternote.feature.afternote.presentation.AfternoteHostViewModel
+import com.afternote.feature.afternote.presentation.author.detail.AfternoteDetailNavigation
+import com.afternote.feature.afternote.presentation.author.editor.AfternoteEditorNavigation
 import com.afternote.feature.afternote.presentation.author.editor.AfternoteEditorViewModel
 import com.afternote.feature.afternote.presentation.author.editor.memorial.playlist.AddSongViewModel
+import com.afternote.feature.afternote.presentation.author.editor.memorial.playlist.AfternoteAddSongNavigation
 import com.afternote.feature.afternote.presentation.author.editor.memorial.playlist.MemorialPlaylistEntry
+import com.afternote.feature.afternote.presentation.author.editor.receiver.select.AfternoteSelectReceiverNavigation
+import com.afternote.feature.afternote.presentation.author.home.AfternoteHomeNavigation
 import com.afternote.feature.afternote.presentation.author.navigation.model.AfternoteRoute
+import com.afternote.feature.afternote.presentation.shared.fingerprint.AfternoteFingerprintLoginNavigation
 
 /**
  * Afternote 피처의 네비게이션 그래프.
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphAddSong.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphAddSong.kt
deleted file mode 100644
index 2d94ea21a0..0000000000
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphAddSong.kt
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.afternote.feature.afternote.presentation.author.navigation
-
-import androidx.compose.runtime.Composable
-import com.afternote.feature.afternote.presentation.author.editor.memorial.playlist.AddSongEntry
-import com.afternote.feature.afternote.presentation.author.editor.memorial.playlist.AddSongViewModel
-import com.afternote.feature.afternote.presentation.author.editor.memorial.playlist.Song
-
-@Composable
-internal fun AfternoteAddSongNavigation(
-    onPopBackStack: () -> Unit,
-    onSongsAdded: (List<Song>) -> Unit,
-    viewModel: AddSongViewModel,
-) {
-    AddSongEntry(
-        viewModel = viewModel,
-        onBackClick = onPopBackStack,
-        onSongsAdded = onSongsAdded,
-    )
-}
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/detail/ReceivedAfternoteDetailRoute.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/detail/ReceivedAfternoteDetailRoute.kt
index 0465e60326..a007997ef8 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/detail/ReceivedAfternoteDetailRoute.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/detail/ReceivedAfternoteDetailRoute.kt
@@ -7,8 +7,8 @@ import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.compose.LifecycleEventEffect
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.afternote.core.ui.loading.LoadingBody
-import com.afternote.feature.afternote.presentation.author.navigation.DesignPendingDetailContent
-import com.afternote.feature.afternote.presentation.author.navigation.DetailLoadErrorContent
+import com.afternote.feature.afternote.presentation.shared.detail.DesignPendingDetailContent
+import com.afternote.feature.afternote.presentation.shared.detail.DetailLoadErrorContent
 
 /**
  * 수신 애프터노트 상세 Stateful Route.
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/navigation/ReceivedAfternoteNavGraph.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/navigation/ReceivedAfternoteNavGraph.kt
index 2abd6b3b4c..c70c566ff0 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/navigation/ReceivedAfternoteNavGraph.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/receiver/navigation/ReceivedAfternoteNavGraph.kt
@@ -7,7 +7,6 @@ import androidx.lifecycle.compose.LifecycleEventEffect
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavGraphBuilder
 import com.afternote.core.ui.loading.LoadingBody
-import com.afternote.feature.afternote.presentation.author.navigation.DetailLoadErrorContent
 import com.afternote.feature.afternote.presentation.author.navigation.afternoteComposable
 import com.afternote.feature.afternote.presentation.receiver.afternotelist.ReceiverAfternoteHomeEntry
 import com.afternote.feature.afternote.presentation.receiver.detail.ReceivedAfternoteDetailRoute
@@ -15,6 +14,7 @@ import com.afternote.feature.afternote.presentation.receiver.navigation.model.Re
 import com.afternote.feature.afternote.presentation.receiver.playlist.MemorialPlaylistScreen
 import com.afternote.feature.afternote.presentation.receiver.playlist.ReceiverMemorialPlaylistUiState
 import com.afternote.feature.afternote.presentation.receiver.playlist.ReceiverMemorialPlaylistViewModel
+import com.afternote.feature.afternote.presentation.shared.detail.DetailLoadErrorContent
 
 /**
  * 수신 애프터노트 목록·상세·추억 플레이리스트를 루트 NavHost 에 등록한다.
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/shared/detail/DetailStateContents.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/shared/detail/DetailStateContents.kt
new file mode 100644
index 0000000000..a48df983c8
--- /dev/null
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/shared/detail/DetailStateContents.kt
@@ -0,0 +1,97 @@
+package com.afternote.feature.afternote.presentation.shared.detail
+
+import androidx.annotation.StringRes
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import com.afternote.core.ui.theme.AfternoteDesign
+import com.afternote.core.ui.topbar.DetailTopBar
+import com.afternote.feature.afternote.presentation.R
+
+// 작성자·수신자 상세가 함께 쓰는 «내용 대신 상태를 보여 주는» 화면들이다. 한쪽 기능 폴더에
+// 두면 다른 쪽이 남의 폴더를 import 해야 한다 (#1514).
+
+@Composable
+fun DesignPendingDetailContent(onBackClick: () -> Unit) {
+    Scaffold(
+        modifier = Modifier.fillMaxSize(),
+        containerColor = Color.Transparent,
+        topBar = {
+            DetailTopBar(title = "", onBackClick = onBackClick)
+        },
+    ) { paddingValues ->
+        Box(
+            modifier =
+                Modifier
+                    .fillMaxSize()
+                    .padding(paddingValues),
+            contentAlignment = Alignment.Center,
+        ) {
+            Text(text = stringResource(R.string.design_pending))
+        }
+    }
+}
+
+/**
+ * 상세 데이터 로드 실패 화면.
+ *
+ * [com.afternote.feature.afternote.presentation.author.detail.AfternoteDetailUiState.Error] 계약대로
+ * [messageRes] 를 [stringResource] 로 변환해 표시한다 (없으면 [R.string.afternote_detail_load_error] 폴백).
+ * 예외 원문은 받지 않는다 — 서버 5xx 본문·역직렬화 예외 메시지에 내부 SQL·응답 원문 발췌가 섞여 오기 때문.
+ *
+ * 표시 방식 통일(#446) 결론이 나오면 이 컴포저블의 본문 표현만 교체한다 — Route 의 Error 분기 배선은 유지.
+ * [DesignPendingDetailContent] 는 ESTATE 등 아직 구현되지 않은 상세 타입의 폴백으로만 유지한다.
+ *
+ * @param messageRes 앱에 박힌 문자열 리소스 ID(`R.string.*`). `@StringRes` 는 이 Int 가 임의 정수가 아니라
+ *   string 리소스 id 임을 Lint 에 알리는 표식이며, [stringResource] 로 실제 텍스트로 변환한다.
+ * @param onRetryClick 재조회 진입점. `null` 이면 재시도 버튼을 그리지 않는다 — 잘못된 항목 ID 처럼
+ *   같은 요청을 다시 보내도 결과가 달라지지 않는 실패에 쓴다.
+ */
+@Composable
+fun DetailLoadErrorContent(
+    @StringRes messageRes: Int?,
+    onBackClick: () -> Unit,
+    onRetryClick: (() -> Unit)? = null,
+) {
+    Scaffold(
+        modifier = Modifier.fillMaxSize(),
+        containerColor = Color.Transparent,
+        topBar = {
+            DetailTopBar(title = "", onBackClick = onBackClick)
+        },
+    ) { paddingValues ->
+        Box(
+            modifier =
+                Modifier
+                    .fillMaxSize()
+                    .padding(paddingValues),
+            contentAlignment = Alignment.Center,
+        ) {
+            Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                Text(text = stringResource(messageRes ?: R.string.afternote_detail_load_error))
+                if (onRetryClick != null) {
+                    Spacer(modifier = Modifier.height(16.dp))
+                    TextButton(onClick = onRetryClick) {
+                        Text(
+                            text = stringResource(R.string.afternote_detail_retry),
+                            style = AfternoteDesign.typography.captionLargeB,
+                            color = AfternoteDesign.colors.gray9,
+                        )
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphFingerprint.kt b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/shared/fingerprint/FingerprintLoginRoute.kt
similarity index 88%
rename from feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphFingerprint.kt
rename to feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/shared/fingerprint/FingerprintLoginRoute.kt
index d9d42042bd..f93182553f 100644
--- a/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/author/navigation/AfternoteNavGraphFingerprint.kt
+++ b/feature/afternote/presentation/src/main/kotlin/com/afternote/feature/afternote/presentation/shared/fingerprint/FingerprintLoginRoute.kt
@@ -1,4 +1,4 @@
-package com.afternote.feature.afternote.presentation.author.navigation
+package com.afternote.feature.afternote.presentation.shared.fingerprint
 
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
@@ -12,10 +12,6 @@ import androidx.compose.ui.res.stringResource
 import androidx.fragment.app.FragmentActivity
 import com.afternote.core.ui.findActivity
 import com.afternote.feature.afternote.presentation.R
-import com.afternote.feature.afternote.presentation.shared.fingerprint.BiometricAuthResult
-import com.afternote.feature.afternote.presentation.shared.fingerprint.BiometricMessages
-import com.afternote.feature.afternote.presentation.shared.fingerprint.FingerprintLoginScreen
-import com.afternote.feature.afternote.presentation.shared.fingerprint.authenticateBiometric
 import kotlinx.coroutines.launch
 
 @Composable
diff --git a/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/navigation/DeleteInProgressOverlayScreenshotTest.kt b/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/detail/DeleteInProgressOverlayScreenshotTest.kt
similarity index 93%
rename from feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/navigation/DeleteInProgressOverlayScreenshotTest.kt
rename to feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/detail/DeleteInProgressOverlayScreenshotTest.kt
index 29e81e029c..b0764e9d1d 100644
--- a/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/navigation/DeleteInProgressOverlayScreenshotTest.kt
+++ b/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/detail/DeleteInProgressOverlayScreenshotTest.kt
@@ -1,4 +1,4 @@
-package com.afternote.feature.afternote.presentation.author.navigation
+package com.afternote.feature.afternote.presentation.author.detail
 
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
diff --git a/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTest.kt b/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTest.kt
similarity index 95%
rename from feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTest.kt
rename to feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTest.kt
index e1b73cb44a..518207b9c7 100644
--- a/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTest.kt
+++ b/feature/afternote/presentation/src/screenshotTest/kotlin/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTest.kt
@@ -1,4 +1,4 @@
-package com.afternote.feature.afternote.presentation.author.navigation
+package com.afternote.feature.afternote.presentation.shared.detail
 
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.tooling.preview.Preview
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DeleteInProgressOverlayScreenshotTestKt/deleteInProgressOverlayScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/detail/DeleteInProgressOverlayScreenshotTestKt/deleteInProgressOverlayScreenshot_748aa731_0.png
similarity index 100%
rename from feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DeleteInProgressOverlayScreenshotTestKt/deleteInProgressOverlayScreenshot_748aa731_0.png
rename to feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/detail/DeleteInProgressOverlayScreenshotTestKt/deleteInProgressOverlayScreenshot_748aa731_0.png
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentDefaultFallbackScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentDefaultFallbackScreenshot_748aa731_0.png
similarity index 100%
rename from feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentDefaultFallbackScreenshot_748aa731_0.png
rename to feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentDefaultFallbackScreenshot_748aa731_0.png
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentMessageResScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentMessageResScreenshot_748aa731_0.png
similarity index 100%
rename from feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentMessageResScreenshot_748aa731_0.png
rename to feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentMessageResScreenshot_748aa731_0.png
diff --git a/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentRetryScreenshot_748aa731_0.png b/feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentRetryScreenshot_748aa731_0.png
similarity index 100%
rename from feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/author/navigation/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentRetryScreenshot_748aa731_0.png
rename to feature/afternote/presentation/src/screenshotTestDebug/reference/com/afternote/feature/afternote/presentation/shared/detail/DetailLoadErrorContentScreenshotTestKt/detailLoadErrorContentRetryScreenshot_748aa731_0.png
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt
index 1a5cfbc800..51b63c029c 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorProcessingMethodDefaultsInteractionTest.kt
@@ -11,7 +11,6 @@ import com.afternote.core.ui.theme.AfternoteTheme
 import com.afternote.feature.afternote.presentation.author.editor.processing.model.ProcessingMethodItem
 import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteTypeForm
 import com.afternote.feature.afternote.presentation.author.editor.state.EditorFormState
-import com.afternote.feature.afternote.presentation.author.navigation.shouldDeferEditorBaselineCapture
 import org.junit.Assert.assertEquals
 import org.junit.Rule
 import org.junit.Test
diff --git a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorReceiverSelectionRecoveryTest.kt b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorReceiverSelectionRecoveryTest.kt
index 2990dd6725..dce8d927c0 100644
--- a/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorReceiverSelectionRecoveryTest.kt
+++ b/feature/afternote/presentation/src/test/kotlin/com/afternote/feature/afternote/presentation/author/editor/AfternoteEditorReceiverSelectionRecoveryTest.kt
@@ -11,7 +11,6 @@ import com.afternote.feature.afternote.domain.repository.author.MemorialThumbnai
 import com.afternote.feature.afternote.domain.usecase.editor.ResolveMemorialMediaForSaveUseCase
 import com.afternote.feature.afternote.presentation.R
 import com.afternote.feature.afternote.presentation.author.editor.state.AfternoteEditorError
-import com.afternote.feature.afternote.presentation.author.navigation.messageResId
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.launch