feat(deck): назначить/снять себя на карточке (P1 diff — исполнители были read-only)

DeckRepository.assignUser/unassignUser (POST /cards/{id}/assign, PUT /cards/{id}/unassign,
type 0), parseAssigneeUids для определения «назначен ли текущий пользователь»; VM.toggleAssignSelf;
кнопка «Назначить мне / Снять назначение с меня» + список исполнителей в DeckCardSheet.
Компилируется (Kotlin ok); detekt модуля 103=103 к HEAD (без новых замечаний; baseline-рефреш — лид, mail/095).

feature/deck/src/main/java/ru/forbion/f7cloud/feature/deck/DeckCardSheet.kt

@@ -55,10 +55,12 @@ fun DeckCardSheet(
     stacks: List<DeckStack>,
     canEdit: Boolean,
     busy: Boolean,
+    assignedToMe: Boolean,
     onDismiss: () -> Unit,
     onToggleDone: () -> Unit,
     onSave: (title: String, description: String, duedate: String?) -> Unit,
     onToggleLabel: (DeckLabel) -> Unit,
+    onToggleAssignSelf: () -> Unit,
     onMove: (targetStackId: Int) -> Unit,
     onArchive: () -> Unit,
     onDelete: () -> Unit,
@@ -146,6 +148,24 @@ fun DeckCardSheet(
                     }
                 }
 
+                // Исполнители
+                Text("Исполнители", style = MaterialTheme.typography.bodyMedium, color = F7Colors.TextSecondary)
+                if (card.assignees.isNotEmpty()) {
+                    Text(
+                        card.assignees.joinToString(", "),
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = F7Colors.TextPrimary,
+                    )
+                }
+                if (canEdit) {
+                    F7SecondaryButton(
+                        text = if (assignedToMe) "Снять назначение с меня" else "Назначить мне",
+                        onClick = onToggleAssignSelf,
+                        enabled = !busy,
+                        modifier = Modifier.fillMaxWidth(),
+                    )
+                }
+
                 // Переместить в колонку
                 if (canEdit && stacks.size > 1) {
                     Text("Колонка", style = MaterialTheme.typography.bodyMedium, color = F7Colors.TextSecondary)

feature/deck/src/main/java/ru/forbion/f7cloud/feature/deck/DeckRepository.kt

@@ -99,6 +99,7 @@ class DeckRepository {
         stackId = stackId,
         labels = parseLabels(card.optJSONArray("labels")),
         assignees = parseAssignees(card.optJSONArray("assignedUsers")),
+        assigneeUids = parseAssigneeUids(card.optJSONArray("assignedUsers")),
     )
 
     private fun parseLabels(array: JSONArray?): List<DeckLabel> {
@@ -126,6 +127,21 @@ class DeckRepository {
         return out
     }
 
+    /** uid'ы назначенных пользователей (type 0 — user) — для «назначен ли текущий пользователь». */
+    private fun parseAssigneeUids(array: JSONArray?): List<String> {
+        if (array == null) return emptyList()
+        val out = mutableListOf<String>()
+        for (i in 0 until array.length()) {
+            val a = array.optJSONObject(i)
+            if (a != null && a.optInt("type", 0) == 0) {
+                val uid = a.optJSONObject("participant")?.optString("uid")?.takeIf { it.isNotBlank() }
+                    ?: a.optString("participant").takeIf { it.isNotBlank() }
+                if (!uid.isNullOrBlank()) out += uid
+            }
+        }
+        return out
+    }
+
     // --- Запись ---
 
     fun createCard(session: AuthSession, stackId: Int, title: String): DeckCard {
@@ -179,6 +195,18 @@ class DeckRepository {
         sendJson(session, "DELETE", "${apiBase(session)}/cards/$cardId/label/$labelId", null)
     }
 
+    /** Назначить пользователя (type 0) на карточку. */
+    fun assignUser(session: AuthSession, cardId: Int, uid: String) {
+        val body = JSONObject().put("userId", uid).put("type", 0)
+        sendJson(session, "POST", "${apiBase(session)}/cards/$cardId/assign", body)
+    }
+
+    /** Снять назначение пользователя (type 0) с карточки. */
+    fun unassignUser(session: AuthSession, cardId: Int, uid: String) {
+        val body = JSONObject().put("userId", uid).put("type", 0)
+        sendJson(session, "PUT", "${apiBase(session)}/cards/$cardId/unassign", body)
+    }
+
     fun createStack(session: AuthSession, boardId: Int, title: String): DeckStack {
         val body = JSONObject().put("title", title).put("boardId", boardId).put("order", 999)
         val json = sendJson(session, "POST", "${apiBase(session)}/stacks", body) as? JSONObject
@@ -258,6 +286,7 @@ data class DeckCard(
     val stackId: Int = 0,
     val labels: List<DeckLabel> = emptyList(),
     val assignees: List<String> = emptyList(),
+    val assigneeUids: List<String> = emptyList(),
 )
 
 data class DeckBoardDetail(

feature/deck/src/main/java/ru/forbion/f7cloud/feature/deck/DeckScreen.kt

@@ -135,10 +135,12 @@ fun DeckScreen(
             stacks = state.boardDetail?.stacks.orEmpty(),
             canEdit = state.boardDetail?.canEdit ?: false,
             busy = state.busy,
+            assignedToMe = card.assigneeUids.contains(session.username),
             onDismiss = vm::closeCard,
             onToggleDone = { vm.toggleDone(session, card) },
             onSave = { title, desc, due -> vm.updateCard(session, card, title, desc, due) },
             onToggleLabel = { vm.toggleLabel(session, card, it) },
+            onToggleAssignSelf = { vm.toggleAssignSelf(session, card) },
             onMove = { vm.moveCard(session, card, it) },
             onArchive = { vm.archiveCard(session, card) },
             onDelete = { vm.deleteCard(session, card) },

feature/deck/src/main/java/ru/forbion/f7cloud/feature/deck/DeckViewModel.kt

@@ -111,6 +111,14 @@ class DeckViewModel(
         }
     }
 
+    fun toggleAssignSelf(session: AuthSession, card: DeckCard) = mutate(session) {
+        if (card.assigneeUids.contains(session.username)) {
+            repository.unassignUser(session, card.id, session.username)
+        } else {
+            repository.assignUser(session, card.id, session.username)
+        }
+    }
+
     fun createStack(session: AuthSession, title: String) {
         val boardId = _state.value.selectedBoardId ?: return
         mutate(session) { repository.createStack(session, boardId, title.trim()) }