Add me and unassigned assignee options

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/lib/assignees.ts

@@ -0,0 +1,51 @@
+export interface AssigneeSelection {
+  assigneeAgentId: string | null;
+  assigneeUserId: string | null;
+}
+
+export interface AssigneeOption {
+  id: string;
+  label: string;
+  searchText?: string;
+}
+
+export function assigneeValueFromSelection(selection: Partial<AssigneeSelection>): string {
+  if (selection.assigneeAgentId) return `agent:${selection.assigneeAgentId}`;
+  if (selection.assigneeUserId) return `user:${selection.assigneeUserId}`;
+  return "";
+}
+
+export function parseAssigneeValue(value: string): AssigneeSelection {
+  if (!value) {
+    return { assigneeAgentId: null, assigneeUserId: null };
+  }
+  if (value.startsWith("agent:")) {
+    const assigneeAgentId = value.slice("agent:".length);
+    return { assigneeAgentId: assigneeAgentId || null, assigneeUserId: null };
+  }
+  if (value.startsWith("user:")) {
+    const assigneeUserId = value.slice("user:".length);
+    return { assigneeAgentId: null, assigneeUserId: assigneeUserId || null };
+  }
+  // Backward compatibility for older drafts/defaults that stored a raw agent id.
+  return { assigneeAgentId: value, assigneeUserId: null };
+}
+
+export function currentUserAssigneeOption(currentUserId: string | null | undefined): AssigneeOption[] {
+  if (!currentUserId) return [];
+  return [{
+    id: assigneeValueFromSelection({ assigneeUserId: currentUserId }),
+    label: "Me",
+    searchText: currentUserId === "local-board" ? "me board human local-board" : `me human ${currentUserId}`,
+  }];
+}
+
+export function formatAssigneeUserLabel(
+  userId: string | null | undefined,
+  currentUserId: string | null | undefined,
+): string | null {
+  if (!userId) return null;
+  if (currentUserId && userId === currentUserId) return "Me";
+  if (userId === "local-board") return "Board";
+  return userId.slice(0, 5);
+}