mission-control/frontend/src/app/boards/[boardId]/page.tsx

"use client";

import { memo, useCallback, useEffect, useMemo, useRef, useState } from "react";
import { useParams, useRouter, useSearchParams } from "next/navigation";

import { SignInButton, SignedIn, SignedOut, useAuth } from "@clerk/nextjs";
import {
  Activity,
  ArrowUpRight,
  MessageSquare,
  Pencil,
  Settings,
  X,
} from "lucide-react";

import { Markdown } from "@/components/atoms/Markdown";
import { DashboardSidebar } from "@/components/organisms/DashboardSidebar";
import { TaskBoard } from "@/components/organisms/TaskBoard";
import { DashboardShell } from "@/components/templates/DashboardShell";
import { BoardChatComposer } from "@/components/BoardChatComposer";
import { Button } from "@/components/ui/button";
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog";
import { Input } from "@/components/ui/input";
import DropdownSelect, {
  type DropdownSelectOption,
} from "@/components/ui/dropdown-select";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";
import { Textarea } from "@/components/ui/textarea";
import { streamAgentsApiV1AgentsStreamGet } from "@/api/generated/agents/agents";
import {
  streamApprovalsApiV1BoardsBoardIdApprovalsStreamGet,
  updateApprovalApiV1BoardsBoardIdApprovalsApprovalIdPatch,
} from "@/api/generated/approvals/approvals";
import { getBoardSnapshotApiV1BoardsBoardIdSnapshotGet } from "@/api/generated/boards/boards";
import {
  createBoardMemoryApiV1BoardsBoardIdMemoryPost,
  streamBoardMemoryApiV1BoardsBoardIdMemoryStreamGet,
} from "@/api/generated/board-memory/board-memory";
import {
  createTaskApiV1BoardsBoardIdTasksPost,
  createTaskCommentApiV1BoardsBoardIdTasksTaskIdCommentsPost,
  deleteTaskApiV1BoardsBoardIdTasksTaskIdDelete,
  listTaskCommentsApiV1BoardsBoardIdTasksTaskIdCommentsGet,
  streamTasksApiV1BoardsBoardIdTasksStreamGet,
  updateTaskApiV1BoardsBoardIdTasksTaskIdPatch,
} from "@/api/generated/tasks/tasks";
import type {
  AgentRead,
  ApprovalRead,
  BoardMemoryRead,
  BoardRead,
  TaskCardRead,
  TaskCommentRead,
  TaskRead,
} from "@/api/generated/model";
import { createExponentialBackoff } from "@/lib/backoff";
import { apiDatetimeToMs, parseApiDatetime } from "@/lib/datetime";
import { cn } from "@/lib/utils";

type Board = BoardRead;

type TaskStatus = Exclude<TaskCardRead["status"], undefined>;

type Task = Omit<
  TaskCardRead,
  "status" | "priority" | "approvals_count" | "approvals_pending_count"
> & {
  status: TaskStatus;
  priority: string;
  approvals_count: number;
  approvals_pending_count: number;
};

type Agent = AgentRead & { status: string };

type TaskComment = TaskCommentRead;

type Approval = ApprovalRead & { status: string };

type BoardChatMessage = BoardMemoryRead;

const normalizeTask = (task: TaskCardRead): Task => ({
  ...task,
  status: task.status ?? "inbox",
  priority: task.priority ?? "medium",
  approvals_count: task.approvals_count ?? 0,
  approvals_pending_count: task.approvals_pending_count ?? 0,
});

const normalizeAgent = (agent: AgentRead): Agent => ({
  ...agent,
  status: agent.status ?? "offline",
});

const normalizeApproval = (approval: ApprovalRead): Approval => ({
  ...approval,
  status: approval.status ?? "pending",
});

const priorities = [
  { value: "low", label: "Low" },
  { value: "medium", label: "Medium" },
  { value: "high", label: "High" },
];
const statusOptions = [
  { value: "inbox", label: "Inbox" },
  { value: "in_progress", label: "In progress" },
  { value: "review", label: "Review" },
  { value: "done", label: "Done" },
];

const EMOJI_GLYPHS: Record<string, string> = {
  ":gear:": "⚙️",
  ":sparkles:": "✨",
  ":rocket:": "🚀",
  ":megaphone:": "📣",
  ":chart_with_upwards_trend:": "📈",
  ":bulb:": "💡",
  ":wrench:": "🔧",
  ":shield:": "🛡️",
  ":memo:": "📝",
  ":brain:": "🧠",
};

const SSE_RECONNECT_BACKOFF = {
  baseMs: 1_000,
  factor: 2,
  jitter: 0.2,
  maxMs: 5 * 60_000,
} as const;

const formatShortTimestamp = (value: string) => {
  const date = parseApiDatetime(value);
  if (!date) return "—";
  return date.toLocaleString(undefined, {
    month: "short",
    day: "numeric",
    hour: "2-digit",
    minute: "2-digit",
  });
};

const TaskCommentCard = memo(function TaskCommentCard({
  comment,
  authorLabel,
}: {
  comment: TaskComment;
  authorLabel: string;
}) {
  const message = (comment.message ?? "").trim();
  return (
    <div className="rounded-xl border border-slate-200 bg-white p-3">
      <div className="flex items-center justify-between text-xs text-slate-500">
        <span>{authorLabel}</span>
        <span>{formatShortTimestamp(comment.created_at)}</span>
      </div>
      {message ? (
        <div className="mt-2 select-text cursor-text text-sm leading-relaxed text-slate-900 break-words">
          <Markdown content={message} variant="comment" />
        </div>
      ) : (
        <p className="mt-2 text-sm text-slate-900">—</p>
      )}
    </div>
  );
});

TaskCommentCard.displayName = "TaskCommentCard";

const ChatMessageCard = memo(function ChatMessageCard({
  message,
}: {
  message: BoardChatMessage;
}) {
  return (
    <div className="rounded-2xl border border-slate-200 bg-slate-50/60 p-4">
      <div className="flex flex-wrap items-center justify-between gap-2">
        <p className="text-sm font-semibold text-slate-900">
          {message.source ?? "User"}
        </p>
        <span className="text-xs text-slate-400">
          {formatShortTimestamp(message.created_at)}
        </span>
      </div>
      <div className="mt-2 select-text cursor-text text-sm leading-relaxed text-slate-900 break-words">
        <Markdown content={message.content} variant="basic" />
      </div>
    </div>
  );
});

ChatMessageCard.displayName = "ChatMessageCard";

const LiveFeedCard = memo(function LiveFeedCard({
  comment,
  taskTitle,
  authorName,
  authorRole,
  authorAvatar,
  onViewTask,
}: {
  comment: TaskComment;
  taskTitle: string;
  authorName: string;
  authorRole?: string | null;
  authorAvatar: string;
  onViewTask?: () => void;
}) {
  const message = (comment.message ?? "").trim();
  return (
    <div className="rounded-xl border border-slate-200 bg-white p-3 transition hover:border-slate-300">
      <div className="flex items-start gap-3">
        <div className="flex h-9 w-9 flex-shrink-0 items-center justify-center rounded-full bg-slate-100 text-xs font-semibold text-slate-700">
          {authorAvatar}
        </div>
        <div className="min-w-0 flex-1">
          <div className="flex items-start justify-between gap-2">
            <button
              type="button"
              onClick={onViewTask}
              disabled={!onViewTask}
              className={cn(
                "text-left text-sm font-semibold leading-snug text-slate-900",
                onViewTask
                  ? "cursor-pointer transition hover:text-slate-950 hover:underline"
                  : "cursor-default",
              )}
              title={taskTitle}
              style={{
                display: "-webkit-box",
                WebkitLineClamp: 2,
                WebkitBoxOrient: "vertical",
                overflow: "hidden",
              }}
            >
              {taskTitle}
            </button>
            {onViewTask ? (
              <button
                type="button"
                onClick={onViewTask}
                className="inline-flex flex-shrink-0 items-center gap-1 rounded-md px-2 py-1 text-[11px] font-semibold text-slate-600 transition hover:bg-slate-50 hover:text-slate-900"
                aria-label="View task"
              >
                View task
                <ArrowUpRight className="h-3 w-3" />
              </button>
            ) : null}
          </div>
          <div className="mt-1 flex flex-wrap items-center gap-x-2 gap-y-1 text-[11px] text-slate-500">
            <span className="font-medium text-slate-700">{authorName}</span>
            {authorRole ? (
              <>
                <span className="text-slate-300">·</span>
                <span className="text-slate-500">{authorRole}</span>
              </>
            ) : null}
            <span className="text-slate-300">·</span>
            <span className="text-slate-400">
              {formatShortTimestamp(comment.created_at)}
            </span>
          </div>
        </div>
      </div>
      {message ? (
        <div className="mt-3 select-text cursor-text text-sm leading-relaxed text-slate-900 break-words">
          <Markdown content={message} variant="basic" />
        </div>
      ) : (
        <p className="mt-3 text-sm text-slate-500">—</p>
      )}
    </div>
  );
});

LiveFeedCard.displayName = "LiveFeedCard";

export default function BoardDetailPage() {
  const router = useRouter();
  const params = useParams();
  const searchParams = useSearchParams();
  const boardIdParam = params?.boardId;
  const boardId = Array.isArray(boardIdParam) ? boardIdParam[0] : boardIdParam;
  const { isSignedIn } = useAuth();
  const taskIdFromUrl = searchParams.get("taskId");

  const [board, setBoard] = useState<Board | null>(null);
  const [tasks, setTasks] = useState<Task[]>([]);
  const [agents, setAgents] = useState<Agent[]>([]);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const [selectedTask, setSelectedTask] = useState<Task | null>(null);
  const selectedTaskIdRef = useRef<string | null>(null);
  const openedTaskIdFromUrlRef = useRef<string | null>(null);
  const [comments, setComments] = useState<TaskComment[]>([]);
  const [liveFeed, setLiveFeed] = useState<TaskComment[]>([]);
  const [isCommentsLoading, setIsCommentsLoading] = useState(false);
  const [commentsError, setCommentsError] = useState<string | null>(null);
  const [newComment, setNewComment] = useState("");
  const [isPostingComment, setIsPostingComment] = useState(false);
  const [postCommentError, setPostCommentError] = useState<string | null>(null);
  const [isDetailOpen, setIsDetailOpen] = useState(false);
  const tasksRef = useRef<Task[]>([]);
  const approvalsRef = useRef<Approval[]>([]);
  const agentsRef = useRef<Agent[]>([]);
  const [isEditDialogOpen, setIsEditDialogOpen] = useState(false);
  const [isDeleteDialogOpen, setIsDeleteDialogOpen] = useState(false);

  const [approvals, setApprovals] = useState<Approval[]>([]);
  const [isApprovalsLoading, setIsApprovalsLoading] = useState(false);
  const [approvalsError, setApprovalsError] = useState<string | null>(null);
  const [approvalsUpdatingId, setApprovalsUpdatingId] = useState<string | null>(
    null,
  );
  const [isChatOpen, setIsChatOpen] = useState(false);
  const [chatMessages, setChatMessages] = useState<BoardChatMessage[]>([]);
  const [isChatSending, setIsChatSending] = useState(false);
  const [chatError, setChatError] = useState<string | null>(null);
  const chatMessagesRef = useRef<BoardChatMessage[]>([]);
  const chatEndRef = useRef<HTMLDivElement | null>(null);
  const [isDeletingTask, setIsDeletingTask] = useState(false);
  const [deleteTaskError, setDeleteTaskError] = useState<string | null>(null);
  const [viewMode, setViewMode] = useState<"board" | "list">("board");
  const [isLiveFeedOpen, setIsLiveFeedOpen] = useState(false);
  const pushLiveFeed = useCallback((comment: TaskComment) => {
    setLiveFeed((prev) => {
      if (prev.some((item) => item.id === comment.id)) {
        return prev;
      }
      const next = [comment, ...prev];
      return next.slice(0, 50);
    });
  }, []);

  const [isDialogOpen, setIsDialogOpen] = useState(false);
  const [title, setTitle] = useState("");
  const [description, setDescription] = useState("");
  const [priority, setPriority] = useState("medium");
  const [createError, setCreateError] = useState<string | null>(null);
  const [isCreating, setIsCreating] = useState(false);

  const [editTitle, setEditTitle] = useState("");
  const [editDescription, setEditDescription] = useState("");
  const [editStatus, setEditStatus] = useState<TaskStatus>("inbox");
  const [editPriority, setEditPriority] = useState("medium");
  const [editAssigneeId, setEditAssigneeId] = useState("");
  const [editDependsOnTaskIds, setEditDependsOnTaskIds] = useState<string[]>(
    [],
  );
  const [isSavingTask, setIsSavingTask] = useState(false);
  const [saveTaskError, setSaveTaskError] = useState<string | null>(null);

  const isSidePanelOpen = isDetailOpen || isChatOpen || isLiveFeedOpen;

  const titleLabel = useMemo(
    () => (board ? `${board.name} board` : "Board"),
    [board],
  );

  useEffect(() => {
    if (!isSidePanelOpen) return;

    const { body, documentElement } = document;
    const originalHtmlOverflow = documentElement.style.overflow;
    const originalBodyOverflow = body.style.overflow;
    const originalBodyPaddingRight = body.style.paddingRight;

    const scrollbarWidth = window.innerWidth - documentElement.clientWidth;

    documentElement.style.overflow = "hidden";
    body.style.overflow = "hidden";
    if (scrollbarWidth > 0) {
      body.style.paddingRight = `${scrollbarWidth}px`;
    }

    return () => {
      documentElement.style.overflow = originalHtmlOverflow;
      body.style.overflow = originalBodyOverflow;
      body.style.paddingRight = originalBodyPaddingRight;
    };
  }, [isSidePanelOpen]);

  const latestTaskTimestamp = (items: Task[]) => {
    let latestTime = 0;
    items.forEach((task) => {
      const value = task.updated_at ?? task.created_at;
      if (!value) return;
      const time = apiDatetimeToMs(value);
      if (time !== null && time > latestTime) {
        latestTime = time;
      }
    });
    return latestTime ? new Date(latestTime).toISOString() : null;
  };

  const latestApprovalTimestamp = (items: Approval[]) => {
    let latestTime = 0;
    items.forEach((approval) => {
      const value = approval.resolved_at ?? approval.created_at;
      if (!value) return;
      const time = apiDatetimeToMs(value);
      if (time !== null && time > latestTime) {
        latestTime = time;
      }
    });
    return latestTime ? new Date(latestTime).toISOString() : null;
  };

  const latestAgentTimestamp = (items: Agent[]) => {
    let latestTime = 0;
    items.forEach((agent) => {
      const value = agent.updated_at ?? agent.last_seen_at;
      if (!value) return;
      const time = apiDatetimeToMs(value);
      if (time !== null && time > latestTime) {
        latestTime = time;
      }
    });
    return latestTime ? new Date(latestTime).toISOString() : null;
  };

  const loadBoard = useCallback(async () => {
    if (!isSignedIn || !boardId) return;
    setIsLoading(true);
    setIsApprovalsLoading(true);
    setError(null);
    setApprovalsError(null);
    setChatError(null);
    try {
      const snapshotResult =
        await getBoardSnapshotApiV1BoardsBoardIdSnapshotGet(boardId);
      if (snapshotResult.status !== 200) {
        throw new Error("Unable to load board snapshot.");
      }
      const snapshot = snapshotResult.data;
      setBoard(snapshot.board);
      setTasks((snapshot.tasks ?? []).map(normalizeTask));
      setAgents((snapshot.agents ?? []).map(normalizeAgent));
      setApprovals((snapshot.approvals ?? []).map(normalizeApproval));
      setChatMessages(snapshot.chat_messages ?? []);
    } catch (err) {
      const message =
        err instanceof Error ? err.message : "Something went wrong.";
      setError(message);
      setApprovalsError(message);
      setChatError(message);
    } finally {
      setIsLoading(false);
      setIsApprovalsLoading(false);
    }
  }, [boardId, isSignedIn]);

  useEffect(() => {
    void loadBoard();
  }, [loadBoard]);

  useEffect(() => {
    tasksRef.current = tasks;
  }, [tasks]);

  useEffect(() => {
    approvalsRef.current = approvals;
  }, [approvals]);

  useEffect(() => {
    agentsRef.current = agents;
  }, [agents]);

  useEffect(() => {
    selectedTaskIdRef.current = selectedTask?.id ?? null;
  }, [selectedTask?.id]);

  useEffect(() => {
    chatMessagesRef.current = chatMessages;
  }, [chatMessages]);

  useEffect(() => {
    if (!isChatOpen) return;
    const timeout = window.setTimeout(() => {
      chatEndRef.current?.scrollIntoView({ behavior: "smooth", block: "end" });
    }, 50);
    return () => window.clearTimeout(timeout);
  }, [chatMessages, isChatOpen]);

  const latestChatTimestamp = (items: BoardChatMessage[]) => {
    if (!items.length) return undefined;
    const latest = items.reduce((max, item) => {
      const ts = apiDatetimeToMs(item.created_at);
      return ts === null ? max : Math.max(max, ts);
    }, 0);
    if (!latest) return undefined;
    return new Date(latest).toISOString();
  };

  useEffect(() => {
    if (!isSignedIn || !boardId || !board) return;
    let isCancelled = false;
    const abortController = new AbortController();
    const backoff = createExponentialBackoff(SSE_RECONNECT_BACKOFF);
    let reconnectTimeout: number | undefined;

    const connect = async () => {
      try {
        const since = latestChatTimestamp(chatMessagesRef.current);
        const params = { is_chat: true, ...(since ? { since } : {}) };
        const streamResult =
          await streamBoardMemoryApiV1BoardsBoardIdMemoryStreamGet(
            boardId,
            params,
            {
              headers: { Accept: "text/event-stream" },
              signal: abortController.signal,
            },
          );
        if (streamResult.status !== 200) {
          throw new Error("Unable to connect board chat stream.");
        }
        const response = streamResult.data as Response;
        if (!(response instanceof Response) || !response.body) {
          throw new Error("Unable to connect board chat stream.");
        }
        const reader = response.body.getReader();
        const decoder = new TextDecoder();
        let buffer = "";

        while (!isCancelled) {
          const { value, done } = await reader.read();
          if (done) break;
          if (value && value.length) {
            // Consider the stream "healthy" once we receive any bytes (including pings),
            // then reset the backoff for future reconnects.
            backoff.reset();
          }
          buffer += decoder.decode(value, { stream: true });
          buffer = buffer.replace(/\r\n/g, "\n");
          let boundary = buffer.indexOf("\n\n");
          while (boundary !== -1) {
            const raw = buffer.slice(0, boundary);
            buffer = buffer.slice(boundary + 2);
            const lines = raw.split("\n");
            let eventType = "message";
            let data = "";
            for (const line of lines) {
              if (line.startsWith("event:")) {
                eventType = line.slice(6).trim();
              } else if (line.startsWith("data:")) {
                data += line.slice(5).trim();
              }
            }
            if (eventType === "memory" && data) {
              try {
                const payload = JSON.parse(data) as {
                  memory?: BoardChatMessage;
                };
                if (payload.memory?.tags?.includes("chat")) {
                  setChatMessages((prev) => {
                    const exists = prev.some(
                      (item) => item.id === payload.memory?.id,
                    );
                    if (exists) return prev;
                    const next = [...prev, payload.memory as BoardChatMessage];
                    next.sort((a, b) => {
                      const aTime = apiDatetimeToMs(a.created_at) ?? 0;
                      const bTime = apiDatetimeToMs(b.created_at) ?? 0;
                      return aTime - bTime;
                    });
                    return next;
                  });
                }
              } catch {
                // ignore malformed
              }
            }
            boundary = buffer.indexOf("\n\n");
          }
        }
      } catch {
        // Reconnect handled below.
      }

      if (!isCancelled) {
        if (reconnectTimeout !== undefined) {
          window.clearTimeout(reconnectTimeout);
        }
        const delay = backoff.nextDelayMs();
        reconnectTimeout = window.setTimeout(() => {
          reconnectTimeout = undefined;
          void connect();
        }, delay);
      }
    };

    void connect();
    return () => {
      isCancelled = true;
      abortController.abort();
      if (reconnectTimeout !== undefined) {
        window.clearTimeout(reconnectTimeout);
      }
    };
  }, [board, boardId, isSignedIn]);

  useEffect(() => {
    if (!isSignedIn || !boardId || !board) return;
    let isCancelled = false;
    const abortController = new AbortController();
    const backoff = createExponentialBackoff(SSE_RECONNECT_BACKOFF);
    let reconnectTimeout: number | undefined;

    const connect = async () => {
      try {
        const since = latestApprovalTimestamp(approvalsRef.current);
        const streamResult =
          await streamApprovalsApiV1BoardsBoardIdApprovalsStreamGet(
            boardId,
            since ? { since } : undefined,
            {
              headers: { Accept: "text/event-stream" },
              signal: abortController.signal,
            },
          );
        if (streamResult.status !== 200) {
          throw new Error("Unable to connect approvals stream.");
        }
        const response = streamResult.data as Response;
        if (!(response instanceof Response) || !response.body) {
          throw new Error("Unable to connect approvals stream.");
        }
        const reader = response.body.getReader();
        const decoder = new TextDecoder();
        let buffer = "";

        while (!isCancelled) {
          const { value, done } = await reader.read();
          if (done) break;
          if (value && value.length) {
            backoff.reset();
          }
          buffer += decoder.decode(value, { stream: true });
          buffer = buffer.replace(/\r\n/g, "\n");
          let boundary = buffer.indexOf("\n\n");
          while (boundary !== -1) {
            const raw = buffer.slice(0, boundary);
            buffer = buffer.slice(boundary + 2);
            const lines = raw.split("\n");
            let eventType = "message";
            let data = "";
            for (const line of lines) {
              if (line.startsWith("event:")) {
                eventType = line.slice(6).trim();
              } else if (line.startsWith("data:")) {
                data += line.slice(5).trim();
              }
            }
            if (eventType === "approval" && data) {
              try {
                const payload = JSON.parse(data) as {
                  approval?: ApprovalRead;
                  task_counts?: {
                    task_id?: string;
                    approvals_count?: number;
                    approvals_pending_count?: number;
                  };
                  pending_approvals_count?: number;
                };
                if (payload.approval) {
                  const normalized = normalizeApproval(payload.approval);
                  setApprovals((prev) => {
                    const index = prev.findIndex(
                      (item) => item.id === normalized.id,
                    );
                    if (index === -1) {
                      return [normalized, ...prev];
                    }
                    const next = [...prev];
                    next[index] = {
                      ...next[index],
                      ...normalized,
                    };
                    return next;
                  });
                }
                if (payload.task_counts?.task_id) {
                  const taskId = payload.task_counts.task_id;
                  setTasks((prev) => {
                    const index = prev.findIndex((task) => task.id === taskId);
                    if (index === -1) return prev;
                    const next = [...prev];
                    const current = next[index];
                    next[index] = {
                      ...current,
                      approvals_count:
                        payload.task_counts?.approvals_count ??
                        current.approvals_count,
                      approvals_pending_count:
                        payload.task_counts?.approvals_pending_count ??
                        current.approvals_pending_count,
                    };
                    return next;
                  });
                }
              } catch {
                // Ignore malformed payloads.
              }
            }
            boundary = buffer.indexOf("\n\n");
          }
        }
      } catch {
        // Reconnect handled below.
      }

      if (!isCancelled) {
        if (reconnectTimeout !== undefined) {
          window.clearTimeout(reconnectTimeout);
        }
        const delay = backoff.nextDelayMs();
        reconnectTimeout = window.setTimeout(() => {
          reconnectTimeout = undefined;
          void connect();
        }, delay);
      }
    };

    void connect();
    return () => {
      isCancelled = true;
      abortController.abort();
      if (reconnectTimeout !== undefined) {
        window.clearTimeout(reconnectTimeout);
      }
    };
  }, [board, boardId, isSignedIn]);

  useEffect(() => {
    if (!selectedTask) {
      setEditTitle("");
      setEditDescription("");
      setEditStatus("inbox");
      setEditPriority("medium");
      setEditAssigneeId("");
      setEditDependsOnTaskIds([]);
      setSaveTaskError(null);
      return;
    }
    setEditTitle(selectedTask.title);
    setEditDescription(selectedTask.description ?? "");
    setEditStatus(selectedTask.status);
    setEditPriority(selectedTask.priority);
    setEditAssigneeId(selectedTask.assigned_agent_id ?? "");
    setEditDependsOnTaskIds(selectedTask.depends_on_task_ids ?? []);
    setSaveTaskError(null);
  }, [selectedTask]);

  useEffect(() => {
    if (!isSignedIn || !boardId || !board) return;
    let isCancelled = false;
    const abortController = new AbortController();
    const backoff = createExponentialBackoff(SSE_RECONNECT_BACKOFF);
    let reconnectTimeout: number | undefined;

    const connect = async () => {
      try {
        const since = latestTaskTimestamp(tasksRef.current);
        const streamResult = await streamTasksApiV1BoardsBoardIdTasksStreamGet(
          boardId,
          since ? { since } : undefined,
          {
            headers: { Accept: "text/event-stream" },
            signal: abortController.signal,
          },
        );
        if (streamResult.status !== 200) {
          throw new Error("Unable to connect task stream.");
        }
        const response = streamResult.data as Response;
        if (!(response instanceof Response) || !response.body) {
          throw new Error("Unable to connect task stream.");
        }
        const reader = response.body.getReader();
        const decoder = new TextDecoder();
        let buffer = "";

        while (!isCancelled) {
          const { value, done } = await reader.read();
          if (done) break;
          if (value && value.length) {
            backoff.reset();
          }
          buffer += decoder.decode(value, { stream: true });
          buffer = buffer.replace(/\r\n/g, "\n");
          let boundary = buffer.indexOf("\n\n");
          while (boundary !== -1) {
            const raw = buffer.slice(0, boundary);
            buffer = buffer.slice(boundary + 2);
            const lines = raw.split("\n");
            let eventType = "message";
            let data = "";
            for (const line of lines) {
              if (line.startsWith("event:")) {
                eventType = line.slice(6).trim();
              } else if (line.startsWith("data:")) {
                data += line.slice(5).trim();
              }
            }
            if (eventType === "task" && data) {
              try {
                const payload = JSON.parse(data) as {
                  type?: string;
                  task?: TaskRead;
                  comment?: TaskCommentRead;
                };
                if (
                  payload.comment?.task_id &&
                  payload.type === "task.comment"
                ) {
                  pushLiveFeed(payload.comment);
                  setComments((prev) => {
                    if (
                      selectedTaskIdRef.current !== payload.comment?.task_id
                    ) {
                      return prev;
                    }
                    const exists = prev.some(
                      (item) => item.id === payload.comment?.id,
                    );
                    if (exists) {
                      return prev;
                    }
                    const createdMs = apiDatetimeToMs(
                      payload.comment?.created_at,
                    );
                    if (prev.length === 0 || createdMs === null) {
                      return [...prev, payload.comment as TaskComment];
                    }
                    const last = prev[prev.length - 1];
                    const lastMs = apiDatetimeToMs(last?.created_at);
                    if (lastMs !== null && createdMs >= lastMs) {
                      return [...prev, payload.comment as TaskComment];
                    }
                    const next = [...prev, payload.comment as TaskComment];
                    next.sort((a, b) => {
                      const aTime = apiDatetimeToMs(a.created_at) ?? 0;
                      const bTime = apiDatetimeToMs(b.created_at) ?? 0;
                      return aTime - bTime;
                    });
                    return next;
                  });
                } else if (payload.task) {
                  setTasks((prev) => {
                    const index = prev.findIndex(
                      (item) => item.id === payload.task?.id,
                    );
                    if (index === -1) {
                      const assignee = payload.task?.assigned_agent_id
                        ? (agentsRef.current.find(
                            (agent) =>
                              agent.id === payload.task?.assigned_agent_id,
                          )?.name ?? null)
                        : null;
                      const created = normalizeTask({
                        ...payload.task,
                        assignee,
                        approvals_count: 0,
                        approvals_pending_count: 0,
                      } as TaskCardRead);
                      return [created, ...prev];
                    }
                    const next = [...prev];
                    const existing = next[index];
                    const assignee = payload.task?.assigned_agent_id
                      ? (agentsRef.current.find(
                          (agent) =>
                            agent.id === payload.task?.assigned_agent_id,
                        )?.name ?? null)
                      : null;
                    const updated = normalizeTask({
                      ...existing,
                      ...payload.task,
                      assignee,
                      approvals_count: existing.approvals_count,
                      approvals_pending_count: existing.approvals_pending_count,
                    } as TaskCardRead);
                    next[index] = { ...existing, ...updated };
                    return next;
                  });
                }
              } catch {
                // Ignore malformed payloads.
              }
            }
            boundary = buffer.indexOf("\n\n");
          }
        }
      } catch {
        // Reconnect handled below.
      }

      if (!isCancelled) {
        if (reconnectTimeout !== undefined) {
          window.clearTimeout(reconnectTimeout);
        }
        const delay = backoff.nextDelayMs();
        reconnectTimeout = window.setTimeout(() => {
          reconnectTimeout = undefined;
          void connect();
        }, delay);
      }
    };

    void connect();
    return () => {
      isCancelled = true;
      abortController.abort();
      if (reconnectTimeout !== undefined) {
        window.clearTimeout(reconnectTimeout);
      }
    };
  }, [board, boardId, isSignedIn, pushLiveFeed]);

  useEffect(() => {
    if (!isSignedIn || !boardId) return;
    let isCancelled = false;
    const abortController = new AbortController();
    const backoff = createExponentialBackoff(SSE_RECONNECT_BACKOFF);
    let reconnectTimeout: number | undefined;

    const connect = async () => {
      try {
        const since = latestAgentTimestamp(agentsRef.current);
        const streamResult = await streamAgentsApiV1AgentsStreamGet(
          {
            board_id: boardId,
            since: since ?? null,
          },
          {
            headers: { Accept: "text/event-stream" },
            signal: abortController.signal,
          },
        );
        if (streamResult.status !== 200) {
          throw new Error("Unable to connect agent stream.");
        }
        const response = streamResult.data as Response;
        if (!(response instanceof Response) || !response.body) {
          throw new Error("Unable to connect agent stream.");
        }
        const reader = response.body.getReader();
        const decoder = new TextDecoder();
        let buffer = "";

        while (!isCancelled) {
          const { value, done } = await reader.read();
          if (done) break;
          if (value && value.length) {
            backoff.reset();
          }
          buffer += decoder.decode(value, { stream: true });
          buffer = buffer.replace(/\r\n/g, "\n");
          let boundary = buffer.indexOf("\n\n");
          while (boundary !== -1) {
            const raw = buffer.slice(0, boundary);
            buffer = buffer.slice(boundary + 2);
            const lines = raw.split("\n");
            let eventType = "message";
            let data = "";
            for (const line of lines) {
              if (line.startsWith("event:")) {
                eventType = line.slice(6).trim();
              } else if (line.startsWith("data:")) {
                data += line.slice(5).trim();
              }
            }
            if (eventType === "agent" && data) {
              try {
                const payload = JSON.parse(data) as { agent?: AgentRead };
                if (payload.agent) {
                  const normalized = normalizeAgent(payload.agent);
                  setAgents((prev) => {
                    const index = prev.findIndex(
                      (item) => item.id === normalized.id,
                    );
                    if (index === -1) {
                      return [normalized, ...prev];
                    }
                    const next = [...prev];
                    next[index] = {
                      ...next[index],
                      ...normalized,
                    };
                    return next;
                  });
                }
              } catch {
                // Ignore malformed payloads.
              }
            }
            boundary = buffer.indexOf("\n\n");
          }
        }
      } catch {
        // Reconnect handled below.
      }

      if (!isCancelled) {
        if (reconnectTimeout !== undefined) {
          window.clearTimeout(reconnectTimeout);
        }
        const delay = backoff.nextDelayMs();
        reconnectTimeout = window.setTimeout(() => {
          reconnectTimeout = undefined;
          void connect();
        }, delay);
      }
    };

    void connect();
    return () => {
      isCancelled = true;
      abortController.abort();
      if (reconnectTimeout !== undefined) {
        window.clearTimeout(reconnectTimeout);
      }
    };
  }, [board, boardId, isSignedIn]);

  const resetForm = () => {
    setTitle("");
    setDescription("");
    setPriority("medium");
    setCreateError(null);
  };

  const handleCreateTask = async () => {
    if (!isSignedIn || !boardId) return;
    const trimmed = title.trim();
    if (!trimmed) {
      setCreateError("Add a task title to continue.");
      return;
    }
    setIsCreating(true);
    setCreateError(null);
    try {
      const result = await createTaskApiV1BoardsBoardIdTasksPost(boardId, {
        title: trimmed,
        description: description.trim() || null,
        status: "inbox",
        priority,
      });
      if (result.status !== 200) throw new Error("Unable to create task.");

      const created = normalizeTask({
        ...result.data,
        assignee: result.data.assigned_agent_id
          ? (assigneeById.get(result.data.assigned_agent_id) ?? null)
          : null,
        approvals_count: 0,
        approvals_pending_count: 0,
      } as TaskCardRead);
      setTasks((prev) => [created, ...prev]);
      setIsDialogOpen(false);
      resetForm();
    } catch (err) {
      setCreateError(
        err instanceof Error ? err.message : "Something went wrong.",
      );
    } finally {
      setIsCreating(false);
    }
  };

  const handleSendChat = useCallback(
    async (content: string): Promise<boolean> => {
      if (!isSignedIn || !boardId) return false;
      const trimmed = content.trim();
      if (!trimmed) return false;
      setIsChatSending(true);
      setChatError(null);
      try {
        const result = await createBoardMemoryApiV1BoardsBoardIdMemoryPost(
          boardId,
          {
            content: trimmed,
            tags: ["chat"],
          },
        );
        if (result.status !== 200) {
          throw new Error("Unable to send message.");
        }
        const created = result.data;
        if (created.tags?.includes("chat")) {
          setChatMessages((prev) => {
            const exists = prev.some((item) => item.id === created.id);
            if (exists) return prev;
            const next = [...prev, created];
            next.sort((a, b) => {
              const aTime = apiDatetimeToMs(a.created_at) ?? 0;
              const bTime = apiDatetimeToMs(b.created_at) ?? 0;
              return aTime - bTime;
            });
            return next;
          });
        }
        return true;
      } catch (err) {
        setChatError(
          err instanceof Error ? err.message : "Unable to send message.",
        );
        return false;
      } finally {
        setIsChatSending(false);
      }
    },
    [boardId, isSignedIn],
  );

  const assigneeById = useMemo(() => {
    const map = new Map<string, string>();
    agents
      .filter((agent) => !boardId || agent.board_id === boardId)
      .forEach((agent) => {
        map.set(agent.id, agent.name);
      });
    return map;
  }, [agents, boardId]);

  const taskTitleById = useMemo(() => {
    const map = new Map<string, string>();
    tasks.forEach((task) => {
      map.set(task.id, task.title);
    });
    return map;
  }, [tasks]);

  const taskById = useMemo(() => {
    const map = new Map<string, Task>();
    tasks.forEach((task) => {
      map.set(task.id, task);
    });
    return map;
  }, [tasks]);

  const orderedLiveFeed = useMemo(() => {
    return [...liveFeed].sort((a, b) => {
      const aTime = apiDatetimeToMs(a.created_at) ?? 0;
      const bTime = apiDatetimeToMs(b.created_at) ?? 0;
      return bTime - aTime;
    });
  }, [liveFeed]);

  const assignableAgents = useMemo(
    () => agents.filter((agent) => !agent.is_board_lead),
    [agents],
  );

  const dependencyOptions = useMemo<DropdownSelectOption[]>(() => {
    if (!selectedTask) return [];
    const alreadySelected = new Set(editDependsOnTaskIds);
    return tasks
      .filter((task) => task.id !== selectedTask.id)
      .map((task) => ({
        value: task.id,
        label: `${task.title} (${task.status.replace(/_/g, " ")})`,
        disabled: alreadySelected.has(task.id),
      }));
  }, [editDependsOnTaskIds, selectedTask, tasks]);

  const addTaskDependency = useCallback((dependencyId: string) => {
    setEditDependsOnTaskIds((prev) =>
      prev.includes(dependencyId) ? prev : [...prev, dependencyId],
    );
  }, []);

  const removeTaskDependency = useCallback((dependencyId: string) => {
    setEditDependsOnTaskIds((prev) =>
      prev.filter((value) => value !== dependencyId),
    );
  }, []);

  const hasTaskChanges = useMemo(() => {
    if (!selectedTask) return false;
    const normalizedTitle = editTitle.trim();
    const normalizedDescription = editDescription.trim();
    const currentDescription = (selectedTask.description ?? "").trim();
    const currentAssignee = selectedTask.assigned_agent_id ?? "";
    const currentDeps = [...(selectedTask.depends_on_task_ids ?? [])]
      .sort()
      .join("|");
    const nextDeps = [...editDependsOnTaskIds].sort().join("|");
    return (
      normalizedTitle !== selectedTask.title ||
      normalizedDescription !== currentDescription ||
      editStatus !== selectedTask.status ||
      editPriority !== selectedTask.priority ||
      editAssigneeId !== currentAssignee ||
      currentDeps !== nextDeps
    );
  }, [
    editAssigneeId,
    editDependsOnTaskIds,
    editDescription,
    editPriority,
    editStatus,
    editTitle,
    selectedTask,
  ]);

  const pendingApprovals = useMemo(
    () => approvals.filter((approval) => approval.status === "pending"),
    [approvals],
  );

  const taskApprovals = useMemo(() => {
    if (!selectedTask) return [];
    const taskId = selectedTask.id;
    return approvals.filter((approval) => approval.task_id === taskId);
  }, [approvals, selectedTask]);

  const workingAgentIds = useMemo(() => {
    const working = new Set<string>();
    tasks.forEach((task) => {
      if (task.status === "in_progress" && task.assigned_agent_id) {
        working.add(task.assigned_agent_id);
      }
    });
    return working;
  }, [tasks]);

  const sortedAgents = useMemo(() => {
    const rank = (agent: Agent) => {
      if (workingAgentIds.has(agent.id)) return 0;
      if (agent.status === "online") return 1;
      if (agent.status === "provisioning") return 2;
      return 3;
    };
    return [...agents].sort((a, b) => {
      const diff = rank(a) - rank(b);
      if (diff !== 0) return diff;
      return a.name.localeCompare(b.name);
    });
  }, [agents, workingAgentIds]);

  const loadComments = useCallback(
    async (taskId: string) => {
      if (!isSignedIn || !boardId) return;
      setIsCommentsLoading(true);
      setCommentsError(null);
      try {
        const result =
          await listTaskCommentsApiV1BoardsBoardIdTasksTaskIdCommentsGet(
            boardId,
            taskId,
          );
        if (result.status !== 200) throw new Error("Unable to load comments.");
        const items = [...(result.data.items ?? [])];
        items.sort((a, b) => {
          const aTime = apiDatetimeToMs(a.created_at) ?? 0;
          const bTime = apiDatetimeToMs(b.created_at) ?? 0;
          return aTime - bTime;
        });
        setComments(items);
      } catch (err) {
        setCommentsError(
          err instanceof Error ? err.message : "Something went wrong.",
        );
      } finally {
        setIsCommentsLoading(false);
      }
    },
    [boardId, isSignedIn],
  );

  const openComments = useCallback(
    (task: { id: string }) => {
      setIsChatOpen(false);
      setIsLiveFeedOpen(false);
      const fullTask = tasksRef.current.find((item) => item.id === task.id);
      if (!fullTask) return;
      selectedTaskIdRef.current = fullTask.id;
      setSelectedTask(fullTask);
      setIsDetailOpen(true);
      void loadComments(task.id);
    },
    [loadComments],
  );

  useEffect(() => {
    if (!taskIdFromUrl) return;
    if (openedTaskIdFromUrlRef.current === taskIdFromUrl) return;
    const exists = tasks.some((task) => task.id === taskIdFromUrl);
    if (!exists) return;
    openedTaskIdFromUrlRef.current = taskIdFromUrl;
    openComments({ id: taskIdFromUrl });
  }, [openComments, taskIdFromUrl, tasks]);

  const closeComments = () => {
    setIsDetailOpen(false);
    selectedTaskIdRef.current = null;
    setSelectedTask(null);
    setComments([]);
    setCommentsError(null);
    setNewComment("");
    setPostCommentError(null);
    setIsEditDialogOpen(false);
  };

  const openBoardChat = () => {
    if (isDetailOpen) {
      closeComments();
    }
    setIsLiveFeedOpen(false);
    setIsChatOpen(true);
  };

  const closeBoardChat = () => {
    setIsChatOpen(false);
    setChatError(null);
  };

  const openLiveFeed = () => {
    if (isDetailOpen) {
      closeComments();
    }
    if (isChatOpen) {
      closeBoardChat();
    }
    setIsLiveFeedOpen(true);
  };

  const closeLiveFeed = () => {
    setIsLiveFeedOpen(false);
  };

  const handlePostComment = async () => {
    if (!selectedTask || !boardId || !isSignedIn) return;
    const trimmed = newComment.trim();
    if (!trimmed) {
      setPostCommentError("Write a message before sending.");
      return;
    }
    setIsPostingComment(true);
    setPostCommentError(null);
    try {
      const result =
        await createTaskCommentApiV1BoardsBoardIdTasksTaskIdCommentsPost(
          boardId,
          selectedTask.id,
          { message: trimmed },
        );
      if (result.status !== 200) throw new Error("Unable to send message.");
      const created = result.data;
      setComments((prev) => [created, ...prev]);
      setNewComment("");
    } catch (err) {
      setPostCommentError(
        err instanceof Error ? err.message : "Unable to send message.",
      );
    } finally {
      setIsPostingComment(false);
    }
  };

  const handleTaskSave = async (closeOnSuccess = false) => {
    if (!selectedTask || !isSignedIn || !boardId) return;
    const trimmedTitle = editTitle.trim();
    if (!trimmedTitle) {
      setSaveTaskError("Title is required.");
      return;
    }
    setIsSavingTask(true);
    setSaveTaskError(null);
    try {
      const currentDeps = [...(selectedTask.depends_on_task_ids ?? [])]
        .sort()
        .join("|");
      const nextDeps = [...editDependsOnTaskIds].sort().join("|");
      const depsChanged = currentDeps !== nextDeps;

      const updatePayload: Parameters<
        typeof updateTaskApiV1BoardsBoardIdTasksTaskIdPatch
      >[2] = {
        title: trimmedTitle,
        description: editDescription.trim() || null,
        status: editStatus,
        priority: editPriority,
        assigned_agent_id: editAssigneeId || null,
      };

      if (depsChanged && selectedTask.status !== "done") {
        updatePayload.depends_on_task_ids = editDependsOnTaskIds;
      }

      const result = await updateTaskApiV1BoardsBoardIdTasksTaskIdPatch(
        boardId,
        selectedTask.id,
        updatePayload,
      );
      if (result.status === 409) {
        const blockedIds = result.data.detail.blocked_by_task_ids ?? [];
        const blockedTitles = blockedIds
          .map((id) => taskTitleById.get(id) ?? id)
          .join(", ");
        setSaveTaskError(
          blockedTitles
            ? `${result.data.detail.message} Blocked by: ${blockedTitles}`
            : result.data.detail.message,
        );
        return;
      }
      if (result.status === 422) {
        setSaveTaskError(
          result.data.detail?.[0]?.msg ?? "Validation error while saving task.",
        );
        return;
      }
      const previous =
        tasksRef.current.find((task) => task.id === selectedTask.id) ??
        selectedTask;
      const updated = normalizeTask({
        ...previous,
        ...result.data,
        assignee: result.data.assigned_agent_id
          ? (assigneeById.get(result.data.assigned_agent_id) ?? null)
          : null,
        approvals_count: previous.approvals_count,
        approvals_pending_count: previous.approvals_pending_count,
      } as TaskCardRead);
      setTasks((prev) =>
        prev.map((task) =>
          task.id === updated.id ? { ...task, ...updated } : task,
        ),
      );
      setSelectedTask(updated);
      if (closeOnSuccess) {
        setIsEditDialogOpen(false);
      }
    } catch (err) {
      setSaveTaskError(
        err instanceof Error ? err.message : "Something went wrong.",
      );
    } finally {
      setIsSavingTask(false);
    }
  };

  const handleTaskReset = () => {
    if (!selectedTask) return;
    setEditTitle(selectedTask.title);
    setEditDescription(selectedTask.description ?? "");
    setEditStatus(selectedTask.status);
    setEditPriority(selectedTask.priority);
    setEditAssigneeId(selectedTask.assigned_agent_id ?? "");
    setEditDependsOnTaskIds(selectedTask.depends_on_task_ids ?? []);
    setSaveTaskError(null);
  };

  const handleDeleteTask = async () => {
    if (!selectedTask || !boardId || !isSignedIn) return;
    setIsDeletingTask(true);
    setDeleteTaskError(null);
    try {
      const result = await deleteTaskApiV1BoardsBoardIdTasksTaskIdDelete(
        boardId,
        selectedTask.id,
      );
      if (result.status !== 200) throw new Error("Unable to delete task.");
      setTasks((prev) => prev.filter((task) => task.id !== selectedTask.id));
      setIsDeleteDialogOpen(false);
      closeComments();
    } catch (err) {
      setDeleteTaskError(
        err instanceof Error ? err.message : "Something went wrong.",
      );
    } finally {
      setIsDeletingTask(false);
    }
  };

  const handleTaskMove = useCallback(
    async (taskId: string, status: TaskStatus) => {
      if (!isSignedIn || !boardId) return;
      const currentTask = tasksRef.current.find((task) => task.id === taskId);
      if (!currentTask || currentTask.status === status) return;
      if (currentTask.is_blocked && status !== "inbox") {
        setError("Task is blocked by incomplete dependencies.");
        return;
      }
      const previousTasks = tasksRef.current;
      setTasks((prev) =>
        prev.map((task) =>
          task.id === taskId
            ? {
                ...task,
                status,
                assigned_agent_id:
                  status === "inbox" ? null : task.assigned_agent_id,
                assignee: status === "inbox" ? null : task.assignee,
              }
            : task,
        ),
      );
      try {
        const result = await updateTaskApiV1BoardsBoardIdTasksTaskIdPatch(
          boardId,
          taskId,
          { status },
        );
        if (result.status === 409) {
          const blockedIds = result.data.detail.blocked_by_task_ids ?? [];
          const blockedTitles = blockedIds
            .map((id) => taskTitleById.get(id) ?? id)
            .join(", ");
          throw new Error(
            blockedTitles
              ? `${result.data.detail.message} Blocked by: ${blockedTitles}`
              : result.data.detail.message,
          );
        }
        if (result.status === 422) {
          throw new Error(
            result.data.detail?.[0]?.msg ??
              "Validation error while moving task.",
          );
        }
        const assignee = result.data.assigned_agent_id
          ? (agentsRef.current.find(
              (agent) => agent.id === result.data.assigned_agent_id,
            )?.name ?? null)
          : null;
        const updated = normalizeTask({
          ...currentTask,
          ...result.data,
          assignee,
          approvals_count: currentTask.approvals_count,
          approvals_pending_count: currentTask.approvals_pending_count,
        } as TaskCardRead);
        setTasks((prev) =>
          prev.map((task) =>
            task.id === updated.id ? { ...task, ...updated } : task,
          ),
        );
      } catch (err) {
        setTasks(previousTasks);
        setError(err instanceof Error ? err.message : "Unable to move task.");
      }
    },
    [boardId, isSignedIn, taskTitleById],
  );

  const agentInitials = (agent: Agent) =>
    agent.name
      .split(" ")
      .filter(Boolean)
      .slice(0, 2)
      .map((part) => part[0])
      .join("")
      .toUpperCase();

  const resolveEmoji = (value?: string | null) => {
    if (!value) return null;
    const trimmed = value.trim();
    if (!trimmed) return null;
    if (EMOJI_GLYPHS[trimmed]) return EMOJI_GLYPHS[trimmed];
    if (trimmed.startsWith(":") && trimmed.endsWith(":")) return null;
    return trimmed;
  };

  const agentAvatarLabel = (agent: Agent) => {
    if (agent.is_board_lead) return "⚙️";
    let emojiValue: string | null = null;
    if (agent.identity_profile && typeof agent.identity_profile === "object") {
      const rawEmoji = (agent.identity_profile as Record<string, unknown>)
        .emoji;
      emojiValue = typeof rawEmoji === "string" ? rawEmoji : null;
    }
    const emoji = resolveEmoji(emojiValue);
    return emoji ?? agentInitials(agent);
  };

  const agentRoleLabel = (agent: Agent) => {
    // Prefer the configured identity role from the API.
    if (agent.identity_profile && typeof agent.identity_profile === "object") {
      const rawRole = (agent.identity_profile as Record<string, unknown>).role;
      if (typeof rawRole === "string") {
        const trimmed = rawRole.trim();
        if (trimmed) return trimmed;
      }
    }
    if (agent.is_board_lead) return "Board lead";
    if (agent.is_gateway_main) return "Gateway main";
    return "Agent";
  };

  const formatTaskTimestamp = (value?: string | null) => {
    if (!value) return "—";
    const date = parseApiDatetime(value);
    if (!date) return "—";
    return date.toLocaleString(undefined, {
      month: "short",
      day: "numeric",
      hour: "2-digit",
      minute: "2-digit",
    });
  };

  const statusBadgeClass = (value?: string) => {
    switch (value) {
      case "in_progress":
        return "bg-purple-100 text-purple-700";
      case "review":
        return "bg-indigo-100 text-indigo-700";
      case "done":
        return "bg-emerald-100 text-emerald-700";
      default:
        return "bg-slate-100 text-slate-600";
    }
  };

  const priorityBadgeClass = (value?: string) => {
    switch (value?.toLowerCase()) {
      case "high":
        return "bg-rose-100 text-rose-700";
      case "medium":
        return "bg-amber-100 text-amber-700";
      case "low":
        return "bg-emerald-100 text-emerald-700";
      default:
        return "bg-slate-100 text-slate-600";
    }
  };

  const formatApprovalTimestamp = (value?: string | null) => {
    if (!value) return "—";
    const date = parseApiDatetime(value);
    if (!date) return value;
    return date.toLocaleString(undefined, {
      month: "short",
      day: "numeric",
      hour: "2-digit",
      minute: "2-digit",
    });
  };

  const humanizeApprovalAction = (value: string) =>
    value
      .split(".")
      .map((part) =>
        part.replace(/_/g, " ").replace(/\b\w/g, (char) => char.toUpperCase()),
      )
      .join(" · ");

  const approvalPayloadValue = (payload: Approval["payload"], key: string) => {
    if (!payload || typeof payload !== "object") return null;
    const value = (payload as Record<string, unknown>)[key];
    if (typeof value === "string" || typeof value === "number") {
      return String(value);
    }
    return null;
  };

  const approvalRows = (approval: Approval) => {
    const payload = approval.payload ?? {};
    const taskId =
      approval.task_id ??
      approvalPayloadValue(payload, "task_id") ??
      approvalPayloadValue(payload, "taskId") ??
      approvalPayloadValue(payload, "taskID");
    const assignedAgentId =
      approvalPayloadValue(payload, "assigned_agent_id") ??
      approvalPayloadValue(payload, "assignedAgentId");
    const title = approvalPayloadValue(payload, "title");
    const role = approvalPayloadValue(payload, "role");
    const isAssign = approval.action_type.includes("assign");
    const rows: Array<{ label: string; value: string }> = [];
    if (taskId) rows.push({ label: "Task", value: taskId });
    if (isAssign) {
      rows.push({
        label: "Assignee",
        value: assignedAgentId ?? "Unassigned",
      });
    }
    if (title) rows.push({ label: "Title", value: title });
    if (role) rows.push({ label: "Role", value: role });
    return rows;
  };

  const approvalReason = (approval: Approval) =>
    approvalPayloadValue(approval.payload ?? {}, "reason");

  const handleApprovalDecision = useCallback(
    async (approvalId: string, status: "approved" | "rejected") => {
      if (!isSignedIn || !boardId) return;
      setApprovalsUpdatingId(approvalId);
      setApprovalsError(null);
      try {
        const result =
          await updateApprovalApiV1BoardsBoardIdApprovalsApprovalIdPatch(
            boardId,
            approvalId,
            { status },
          );
        if (result.status !== 200) {
          throw new Error("Unable to update approval.");
        }
        const updated = normalizeApproval(result.data);
        setApprovals((prev) =>
          prev.map((item) => (item.id === approvalId ? updated : item)),
        );
      } catch (err) {
        setApprovalsError(
          err instanceof Error ? err.message : "Unable to update approval.",
        );
      } finally {
        setApprovalsUpdatingId(null);
      }
    },
    [boardId, isSignedIn],
  );

  return (
    <DashboardShell>
      <SignedOut>
        <div className="flex h-full flex-col items-center justify-center gap-4 rounded-2xl surface-panel p-10 text-center">
          <p className="text-sm text-muted">Sign in to view boards.</p>
          <SignInButton
            mode="modal"
            forceRedirectUrl="/boards"
            signUpForceRedirectUrl="/boards"
          >
            <Button>Sign in</Button>
          </SignInButton>
        </div>
      </SignedOut>
      <SignedIn>
        <DashboardSidebar />
        <main
          className={cn(
            "flex-1 bg-gradient-to-br from-slate-50 to-slate-100",
            isSidePanelOpen ? "overflow-hidden" : "overflow-y-auto",
          )}
        >
          <div className="sticky top-0 z-30 border-b border-slate-200 bg-white shadow-sm">
            <div className="px-8 py-6">
              <div className="flex flex-wrap items-center justify-between gap-4">
                <div>
                  <h1 className="mt-2 text-2xl font-semibold text-slate-900 tracking-tight">
                    {board?.name ?? "Board"}
                  </h1>
                  <p className="mt-1 text-sm text-slate-500">
                    Keep tasks moving through your workflow.
                  </p>
                </div>
                <div className="flex flex-wrap items-center gap-3">
                  <div className="flex items-center gap-1 rounded-lg bg-slate-100 p-1">
                    <button
                      className={cn(
                        "rounded-md px-3 py-1.5 text-sm font-medium transition-colors",
                        viewMode === "board"
                          ? "bg-slate-900 text-white"
                          : "text-slate-600 hover:bg-slate-200 hover:text-slate-900",
                      )}
                      onClick={() => setViewMode("board")}
                    >
                      Board
                    </button>
                    <button
                      className={cn(
                        "rounded-md px-3 py-1.5 text-sm font-medium transition-colors",
                        viewMode === "list"
                          ? "bg-slate-900 text-white"
                          : "text-slate-600 hover:bg-slate-200 hover:text-slate-900",
                      )}
                      onClick={() => setViewMode("list")}
                    >
                      List
                    </button>
                  </div>
                  <Button onClick={() => setIsDialogOpen(true)}>
                    New task
                  </Button>
                  <Button
                    variant="outline"
                    onClick={() => router.push(`/boards/${boardId}/approvals`)}
                    className="relative"
                  >
                    Approvals
                    {pendingApprovals.length > 0 ? (
                      <span className="ml-2 inline-flex min-w-[20px] items-center justify-center rounded-full bg-slate-900 px-2 py-0.5 text-xs font-semibold text-white">
                        {pendingApprovals.length}
                      </span>
                    ) : null}
                  </Button>
                  <Button
                    variant="outline"
                    onClick={openBoardChat}
                    className="h-9 w-9 p-0"
                    aria-label="Board chat"
                    title="Board chat"
                  >
                    <MessageSquare className="h-4 w-4" />
                  </Button>
                  <Button
                    variant="outline"
                    onClick={openLiveFeed}
                    className="h-9 w-9 p-0"
                    aria-label="Live feed"
                    title="Live feed"
                  >
                    <Activity className="h-4 w-4" />
                  </Button>
                  <button
                    type="button"
                    onClick={() => router.push(`/boards/${boardId}/edit`)}
                    className="inline-flex h-9 w-9 items-center justify-center rounded-lg border border-slate-200 text-slate-600 transition hover:border-slate-300 hover:bg-slate-50"
                    aria-label="Board settings"
                    title="Board settings"
                  >
                    <Settings className="h-4 w-4" />
                  </button>
                </div>
              </div>
            </div>
          </div>

          <div className="relative flex gap-6 p-6">
            <aside className="flex h-full w-64 flex-col rounded-xl border border-slate-200 bg-white shadow-sm">
              <div className="flex items-center justify-between border-b border-slate-200 px-4 py-3">
                <div>
                  <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                    Agents
                  </p>
                  <p className="text-xs text-slate-400">
                    {sortedAgents.length} total
                  </p>
                </div>
                <button
                  type="button"
                  onClick={() => router.push("/agents/new")}
                  className="rounded-md border border-slate-200 px-2.5 py-1 text-xs font-semibold text-slate-600 transition hover:border-slate-300 hover:bg-slate-50"
                >
                  Add
                </button>
              </div>
              <div className="flex-1 space-y-2 overflow-y-auto p-3">
                {sortedAgents.length === 0 ? (
                  <div className="rounded-lg border border-dashed border-slate-200 p-3 text-xs text-slate-500">
                    No agents assigned yet.
                  </div>
                ) : (
                  sortedAgents.map((agent) => {
                    const isWorking = workingAgentIds.has(agent.id);
                    return (
                      <button
                        key={agent.id}
                        type="button"
                        className={cn(
                          "flex w-full items-center gap-3 rounded-lg border border-transparent px-2 py-2 text-left transition hover:border-slate-200 hover:bg-slate-50",
                        )}
                        onClick={() => router.push(`/agents/${agent.id}`)}
                      >
                        <div className="relative flex h-9 w-9 items-center justify-center rounded-full bg-slate-100 text-xs font-semibold text-slate-700">
                          {agentAvatarLabel(agent)}
                          <span
                            className={cn(
                              "absolute -right-0.5 -bottom-0.5 h-2.5 w-2.5 rounded-full border-2 border-white",
                              isWorking
                                ? "bg-emerald-500"
                                : agent.status === "online"
                                  ? "bg-green-500"
                                  : "bg-slate-300",
                            )}
                          />
                        </div>
                        <div className="min-w-0 flex-1">
                          <p className="truncate text-sm font-medium text-slate-900">
                            {agent.name}
                          </p>
                          <p className="text-[11px] text-slate-500">
                            {agentRoleLabel(agent)}
                          </p>
                        </div>
                      </button>
                    );
                  })
                )}
              </div>
            </aside>

            <div className="min-w-0 flex-1 space-y-6">
              {error && (
                <div className="rounded-lg border border-slate-200 bg-white p-3 text-sm text-slate-600 shadow-sm">
                  {error}
                </div>
              )}

              {isLoading ? (
                <div className="flex min-h-[50vh] items-center justify-center text-sm text-slate-500">
                  Loading {titleLabel}…
                </div>
              ) : (
                <>
                  {viewMode === "board" ? (
                    <TaskBoard
                      tasks={tasks}
                      onTaskSelect={openComments}
                      onTaskMove={handleTaskMove}
                    />
                  ) : (
                    <div className="rounded-xl border border-slate-200 bg-white shadow-sm">
                      <div className="border-b border-slate-200 px-5 py-4">
                        <div className="flex items-center justify-between">
                          <div>
                            <p className="text-sm font-semibold text-slate-900">
                              All tasks
                            </p>
                            <p className="text-xs text-slate-500">
                              {tasks.length} tasks in this board
                            </p>
                          </div>
                          <Button
                            variant="outline"
                            size="sm"
                            onClick={() => setIsDialogOpen(true)}
                            disabled={isCreating}
                          >
                            New task
                          </Button>
                        </div>
                      </div>
                      <div className="divide-y divide-slate-100">
                        {tasks.length === 0 ? (
                          <div className="px-5 py-8 text-sm text-slate-500">
                            No tasks yet. Create your first task to get started.
                          </div>
                        ) : (
                          tasks.map((task) => (
                            <button
                              key={task.id}
                              type="button"
                              className="w-full px-5 py-4 text-left transition hover:bg-slate-50"
                              onClick={() => openComments(task)}
                            >
                              <div className="flex flex-wrap items-center justify-between gap-3">
                                <div className="min-w-0">
                                  <p className="truncate text-sm font-semibold text-slate-900">
                                    {task.title}
                                  </p>
                                  <p className="mt-1 text-xs text-slate-500">
                                    {task.description
                                      ? task.description
                                          .toString()
                                          .trim()
                                          .slice(0, 120)
                                      : "No description"}
                                  </p>
                                </div>
                                <div className="flex flex-wrap items-center gap-3 text-xs text-slate-500">
                                  {task.approvals_pending_count ? (
                                    <span className="inline-flex items-center gap-2 text-[10px] font-semibold uppercase tracking-wide text-amber-700">
                                      <span className="h-1.5 w-1.5 rounded-full bg-amber-500" />
                                      Approval needed ·{" "}
                                      {task.approvals_pending_count}
                                    </span>
                                  ) : null}
                                  <span
                                    className={cn(
                                      "rounded-full px-2 py-1 text-[10px] font-semibold uppercase tracking-wide",
                                      statusBadgeClass(task.status),
                                    )}
                                  >
                                    {task.status.replace(/_/g, " ")}
                                  </span>
                                  <span
                                    className={cn(
                                      "rounded-full px-2 py-1 text-[10px] font-semibold uppercase tracking-wide",
                                      priorityBadgeClass(task.priority),
                                    )}
                                  >
                                    {task.priority}
                                  </span>
                                  <span className="text-xs text-slate-500">
                                    {task.assignee ?? "Unassigned"}
                                  </span>
                                  <span className="text-xs text-slate-500">
                                    {formatTaskTimestamp(
                                      task.updated_at ?? task.created_at,
                                    )}
                                  </span>
                                </div>
                              </div>
                            </button>
                          ))
                        )}
                      </div>
                    </div>
                  )}
                </>
              )}
            </div>
          </div>
        </main>
      </SignedIn>
      {isDetailOpen || isChatOpen || isLiveFeedOpen ? (
        <div
          className="fixed inset-0 z-40 bg-slate-900/20"
          onClick={() => {
            if (isChatOpen) {
              closeBoardChat();
            } else if (isLiveFeedOpen) {
              closeLiveFeed();
            } else {
              closeComments();
            }
          }}
        />
      ) : null}
      <aside
        className={cn(
          "fixed right-0 top-0 z-50 h-full w-[max(760px,45vw)] max-w-[99vw] transform bg-white shadow-2xl transition-transform",
          isDetailOpen ? "transform-none" : "translate-x-full",
        )}
      >
        <div className="flex h-full flex-col">
          <div className="flex items-center justify-between border-b border-slate-200 px-6 py-4">
            <div>
              <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Task detail
              </p>
              <p className="mt-1 text-sm font-medium text-slate-900">
                {selectedTask?.title ?? "Task"}
              </p>
            </div>
            <div className="flex items-center gap-2">
              <button
                type="button"
                onClick={() => setIsEditDialogOpen(true)}
                className="rounded-lg border border-slate-200 p-2 text-slate-500 transition hover:bg-slate-50"
                disabled={!selectedTask}
              >
                <Pencil className="h-4 w-4" />
              </button>
              <button
                type="button"
                onClick={closeComments}
                className="rounded-lg border border-slate-200 p-2 text-slate-500 transition hover:bg-slate-50"
              >
                <X className="h-4 w-4" />
              </button>
            </div>
          </div>
          <div className="flex-1 space-y-6 overflow-y-auto px-6 py-5">
            <div className="space-y-2">
              <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Description
              </p>
              {selectedTask?.description ? (
                <div className="prose prose-sm max-w-none text-slate-700">
                  <Markdown
                    content={selectedTask.description}
                    variant="description"
                  />
                </div>
              ) : (
                <p className="text-sm text-slate-500">
                  No description provided.
                </p>
              )}
            </div>
            <div className="space-y-2">
              <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Dependencies
              </p>
              {selectedTask?.depends_on_task_ids?.length ? (
                <div className="space-y-2">
                  {selectedTask.depends_on_task_ids.map((depId) => {
                    const depTask = taskById.get(depId);
                    const title = depTask?.title ?? depId;
                    const statusLabel = depTask?.status
                      ? depTask.status.replace(/_/g, " ")
                      : "unknown";
                    const isDone = depTask?.status === "done";
                    const isBlocking = (
                      selectedTask.blocked_by_task_ids ?? []
                    ).includes(depId);
                    return (
                      <button
                        key={depId}
                        type="button"
                        onClick={() => openComments({ id: depId })}
                        disabled={!depTask}
                        className={cn(
                          "w-full rounded-lg border px-3 py-2 text-left transition",
                          isBlocking
                            ? "border-rose-200 bg-rose-50 hover:bg-rose-100/40"
                            : isDone
                              ? "border-emerald-200 bg-emerald-50 hover:bg-emerald-100/40"
                              : "border-slate-200 bg-white hover:bg-slate-50",
                          !depTask && "cursor-not-allowed opacity-60",
                        )}
                      >
                        <div className="flex items-center justify-between gap-3">
                          <p className="truncate text-sm font-medium text-slate-900">
                            {title}
                          </p>
                          <span
                            className={cn(
                              "text-[10px] font-semibold uppercase tracking-wide",
                              isBlocking
                                ? "text-rose-700"
                                : isDone
                                  ? "text-emerald-700"
                                  : "text-slate-500",
                            )}
                          >
                            {statusLabel}
                          </span>
                        </div>
                      </button>
                    );
                  })}
                </div>
              ) : (
                <p className="text-sm text-slate-500">No dependencies.</p>
              )}
              {selectedTask?.is_blocked ? (
                <div className="rounded-lg border border-rose-200 bg-rose-50 p-3 text-xs text-rose-700">
                  Blocked by incomplete dependencies.
                </div>
              ) : null}
            </div>
            <div className="space-y-3">
              <div className="flex items-center justify-between">
                <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                  Approvals
                </p>
                <Button
                  variant="outline"
                  size="sm"
                  onClick={() => router.push(`/boards/${boardId}/approvals`)}
                >
                  View all
                </Button>
              </div>
              {approvalsError ? (
                <div className="rounded-lg border border-slate-200 bg-slate-50 p-3 text-xs text-slate-500">
                  {approvalsError}
                </div>
              ) : isApprovalsLoading ? (
                <p className="text-sm text-slate-500">Loading approvals…</p>
              ) : taskApprovals.length === 0 ? (
                <p className="text-sm text-slate-500">
                  No approvals tied to this task.{" "}
                  {pendingApprovals.length > 0
                    ? `${pendingApprovals.length} pending on this board.`
                    : "No pending approvals on this board."}
                </p>
              ) : (
                <div className="space-y-3">
                  {taskApprovals.map((approval) => (
                    <div
                      key={approval.id}
                      className="rounded-xl border border-slate-200 bg-white p-3"
                    >
                      <div className="flex flex-wrap items-start justify-between gap-2 text-xs text-slate-500">
                        <div>
                          <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                            {humanizeApprovalAction(approval.action_type)}
                          </p>
                          <p className="mt-1 text-xs text-slate-500">
                            Requested{" "}
                            {formatApprovalTimestamp(approval.created_at)}
                          </p>
                        </div>
                        <span className="text-xs font-semibold text-slate-700">
                          {approval.confidence}% confidence · {approval.status}
                        </span>
                      </div>
                      {approvalRows(approval).length > 0 ? (
                        <div className="mt-2 grid gap-2 text-xs text-slate-600 sm:grid-cols-2">
                          {approvalRows(approval).map((row) => (
                            <div key={`${approval.id}-${row.label}`}>
                              <p className="text-[11px] font-semibold uppercase tracking-wider text-slate-400">
                                {row.label}
                              </p>
                              <p className="mt-1 text-xs text-slate-700">
                                {row.value}
                              </p>
                            </div>
                          ))}
                        </div>
                      ) : null}
                      {approvalReason(approval) ? (
                        <p className="mt-2 text-xs text-slate-600">
                          {approvalReason(approval)}
                        </p>
                      ) : null}
                      {approval.status === "pending" ? (
                        <div className="mt-3 flex flex-wrap gap-2">
                          <Button
                            size="sm"
                            onClick={() =>
                              handleApprovalDecision(approval.id, "approved")
                            }
                            disabled={approvalsUpdatingId === approval.id}
                          >
                            Approve
                          </Button>
                          <Button
                            variant="outline"
                            size="sm"
                            onClick={() =>
                              handleApprovalDecision(approval.id, "rejected")
                            }
                            disabled={approvalsUpdatingId === approval.id}
                            className="border-slate-300 text-slate-700"
                          >
                            Reject
                          </Button>
                        </div>
                      ) : null}
                    </div>
                  ))}
                </div>
              )}
            </div>
            <div className="space-y-3">
              <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Comments
              </p>
              <div className="space-y-2 rounded-xl border border-slate-200 bg-slate-50 p-3">
                <Textarea
                  value={newComment}
                  onChange={(event) => setNewComment(event.target.value)}
                  placeholder="Write a message for the assigned agent…"
                  className="min-h-[80px] bg-white"
                />
                {postCommentError ? (
                  <p className="text-xs text-rose-600">{postCommentError}</p>
                ) : null}
                <div className="flex justify-end">
                  <Button
                    size="sm"
                    onClick={handlePostComment}
                    disabled={isPostingComment || !newComment.trim()}
                  >
                    {isPostingComment ? "Sending…" : "Send message"}
                  </Button>
                </div>
              </div>
              {isCommentsLoading ? (
                <p className="text-sm text-slate-500">Loading comments…</p>
              ) : commentsError ? (
                <div className="rounded-lg border border-slate-200 bg-slate-50 p-3 text-xs text-slate-500">
                  {commentsError}
                </div>
              ) : comments.length === 0 ? (
                <p className="text-sm text-slate-500">No comments yet.</p>
              ) : (
                <div className="space-y-3">
                  {comments.map((comment) => (
                    <TaskCommentCard
                      key={comment.id}
                      comment={comment}
                      authorLabel={
                        comment.agent_id
                          ? (assigneeById.get(comment.agent_id) ?? "Agent")
                          : "Admin"
                      }
                    />
                  ))}
                </div>
              )}
            </div>
          </div>
        </div>
      </aside>

      <aside
        className={cn(
          "fixed right-0 top-0 z-50 h-full w-[560px] max-w-[96vw] transform border-l border-slate-200 bg-white shadow-2xl transition-transform",
          isChatOpen ? "transform-none" : "translate-x-full",
        )}
      >
        <div className="flex h-full flex-col">
          <div className="flex items-center justify-between border-b border-slate-200 px-6 py-4">
            <div>
              <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Board chat
              </p>
              <p className="mt-1 text-sm font-medium text-slate-900">
                Talk to the lead agent. Tag others with @name.
              </p>
            </div>
            <button
              type="button"
              onClick={closeBoardChat}
              className="rounded-lg border border-slate-200 p-2 text-slate-500 transition hover:bg-slate-50"
              aria-label="Close board chat"
            >
              <X className="h-4 w-4" />
            </button>
          </div>
          <div className="flex flex-1 flex-col overflow-hidden px-6 py-4">
            <div className="flex-1 space-y-4 overflow-y-auto rounded-2xl border border-slate-200 bg-white p-4">
              {chatError ? (
                <div className="rounded-xl border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-700">
                  {chatError}
                </div>
              ) : null}
              {chatMessages.length === 0 ? (
                <p className="text-sm text-slate-500">
                  No messages yet. Start the conversation with your lead agent.
                </p>
              ) : (
                chatMessages.map((message) => (
                  <ChatMessageCard key={message.id} message={message} />
                ))
              )}
              <div ref={chatEndRef} />
            </div>
            <BoardChatComposer
              isSending={isChatSending}
              onSend={handleSendChat}
            />
          </div>
        </div>
      </aside>

      <aside
        className={cn(
          "fixed right-0 top-0 z-50 h-full w-[520px] max-w-[96vw] transform border-l border-slate-200 bg-white shadow-2xl transition-transform",
          isLiveFeedOpen ? "transform-none" : "translate-x-full",
        )}
      >
        <div className="flex h-full flex-col">
          <div className="flex items-center justify-between border-b border-slate-200 px-6 py-4">
            <div>
              <p className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Live feed
              </p>
              <p className="mt-1 text-sm font-medium text-slate-900">
                Realtime task comments across this board.
              </p>
            </div>
            <button
              type="button"
              onClick={closeLiveFeed}
              className="rounded-lg border border-slate-200 p-2 text-slate-500 transition hover:bg-slate-50"
              aria-label="Close live feed"
            >
              <X className="h-4 w-4" />
            </button>
          </div>
          <div className="flex-1 overflow-y-auto px-6 py-4">
            {orderedLiveFeed.length === 0 ? (
              <p className="text-sm text-slate-500">
                Waiting for new comments…
              </p>
            ) : (
              <div className="space-y-3">
                {orderedLiveFeed.map((comment) => {
                  const taskId = comment.task_id;
                  const authorAgent = comment.agent_id
                    ? (agents.find((agent) => agent.id === comment.agent_id) ??
                      null)
                    : null;
                  const authorName = authorAgent ? authorAgent.name : "Admin";
                  const authorRole = authorAgent
                    ? agentRoleLabel(authorAgent)
                    : null;
                  const authorAvatar = authorAgent
                    ? agentAvatarLabel(authorAgent)
                    : "A";
                  return (
                    <LiveFeedCard
                      key={comment.id}
                      comment={comment}
                      taskTitle={
                        taskId ? (taskTitleById.get(taskId) ?? "Task") : "Task"
                      }
                      authorName={authorName}
                      authorRole={authorRole}
                      authorAvatar={authorAvatar}
                      onViewTask={
                        taskId ? () => openComments({ id: taskId }) : undefined
                      }
                    />
                  );
                })}
              </div>
            )}
          </div>
        </div>
      </aside>

      <Dialog open={isEditDialogOpen} onOpenChange={setIsEditDialogOpen}>
        <DialogContent aria-label="Edit task">
          <DialogHeader>
            <DialogTitle>Edit task</DialogTitle>
            <DialogDescription>
              Update task details, priority, status, or assignment.
            </DialogDescription>
          </DialogHeader>
          <div className="space-y-4">
            <div className="space-y-2">
              <label className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Title
              </label>
              <Input
                value={editTitle}
                onChange={(event) => setEditTitle(event.target.value)}
                placeholder="Task title"
                disabled={!selectedTask || isSavingTask}
              />
            </div>
            <div className="space-y-2">
              <label className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Description
              </label>
              <Textarea
                value={editDescription}
                onChange={(event) => setEditDescription(event.target.value)}
                placeholder="Task details"
                className="min-h-[140px]"
                disabled={!selectedTask || isSavingTask}
              />
            </div>
            <div className="grid gap-4 md:grid-cols-2">
              <div className="space-y-2">
                <label className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                  Status
                </label>
                <Select
                  value={editStatus}
                  onValueChange={(value) => setEditStatus(value as TaskStatus)}
                  disabled={!selectedTask || isSavingTask}
                >
                  <SelectTrigger>
                    <SelectValue placeholder="Select status" />
                  </SelectTrigger>
                  <SelectContent>
                    {statusOptions.map((option) => (
                      <SelectItem key={option.value} value={option.value}>
                        {option.label}
                      </SelectItem>
                    ))}
                  </SelectContent>
                </Select>
              </div>
              <div className="space-y-2">
                <label className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                  Priority
                </label>
                <Select
                  value={editPriority}
                  onValueChange={setEditPriority}
                  disabled={!selectedTask || isSavingTask}
                >
                  <SelectTrigger>
                    <SelectValue placeholder="Select priority" />
                  </SelectTrigger>
                  <SelectContent>
                    {priorities.map((option) => (
                      <SelectItem key={option.value} value={option.value}>
                        {option.label}
                      </SelectItem>
                    ))}
                  </SelectContent>
                </Select>
              </div>
            </div>
            <div className="space-y-2">
              <label className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Assignee
              </label>
              <Select
                value={editAssigneeId || "unassigned"}
                onValueChange={(value) =>
                  setEditAssigneeId(value === "unassigned" ? "" : value)
                }
                disabled={!selectedTask || isSavingTask}
              >
                <SelectTrigger>
                  <SelectValue placeholder="Unassigned" />
                </SelectTrigger>
                <SelectContent>
                  <SelectItem value="unassigned">Unassigned</SelectItem>
                  {assignableAgents.map((agent) => (
                    <SelectItem key={agent.id} value={agent.id}>
                      {agent.name}
                    </SelectItem>
                  ))}
                </SelectContent>
              </Select>
              {assignableAgents.length === 0 ? (
                <p className="text-xs text-slate-500">
                  Add agents to assign tasks.
                </p>
              ) : null}
            </div>
            <div className="space-y-2">
              <label className="text-xs font-semibold uppercase tracking-wider text-slate-500">
                Dependencies
              </label>
              <p className="text-xs text-slate-500">
                Tasks stay blocked until every dependency is marked done.
              </p>
              <DropdownSelect
                ariaLabel="Add dependency"
                placeholder="Add dependency"
                options={dependencyOptions}
                onValueChange={addTaskDependency}
                disabled={
                  !selectedTask ||
                  isSavingTask ||
                  selectedTask.status === "done"
                }
                emptyMessage="No other tasks found."
              />
              {selectedTask?.status === "done" ? (
                <p className="text-xs text-slate-500">
                  Dependencies can only be edited until the task is done.
                </p>
              ) : null}
              {editDependsOnTaskIds.length === 0 ? (
                <p className="text-xs text-slate-500">No dependencies.</p>
              ) : (
                <div className="flex flex-wrap gap-2">
                  {editDependsOnTaskIds.map((depId) => {
                    const depTask = taskById.get(depId);
                    const label = depTask?.title ?? depId;
                    const statusLabel = depTask?.status
                      ? depTask.status.replace(/_/g, " ")
                      : null;
                    const isDone = depTask?.status === "done";
                    return (
                      <span
                        key={depId}
                        className={cn(
                          "inline-flex items-center gap-2 rounded-full border px-3 py-1 text-xs",
                          isDone
                            ? "border-emerald-200 bg-emerald-50 text-emerald-800"
                            : "border-slate-200 bg-slate-50 text-slate-700",
                        )}
                      >
                        <span className="max-w-[18rem] truncate">{label}</span>
                        {statusLabel ? (
                          <span className="text-[10px] font-semibold uppercase tracking-wide text-slate-400">
                            {statusLabel}
                          </span>
                        ) : null}
                        {selectedTask?.status !== "done" ? (
                          <button
                            type="button"
                            onClick={() => removeTaskDependency(depId)}
                            className="rounded-full p-0.5 text-slate-500 transition hover:bg-white hover:text-slate-700"
                            aria-label="Remove dependency"
                          >
                            <X className="h-3 w-3" />
                          </button>
                        ) : null}
                      </span>
                    );
                  })}
                </div>
              )}
            </div>
            {saveTaskError ? (
              <div className="rounded-lg border border-slate-200 bg-white p-3 text-xs text-slate-600">
                {saveTaskError}
              </div>
            ) : null}
          </div>
          <DialogFooter className="flex flex-wrap gap-2">
            <Button
              variant="outline"
              onClick={() => setIsDeleteDialogOpen(true)}
              disabled={!selectedTask || isSavingTask}
              className="border-rose-200 text-rose-600 hover:border-rose-300 hover:text-rose-700"
            >
              Delete task
            </Button>
            <Button
              variant="outline"
              onClick={handleTaskReset}
              disabled={!selectedTask || isSavingTask || !hasTaskChanges}
            >
              Reset
            </Button>
            <Button
              onClick={() => handleTaskSave(true)}
              disabled={!selectedTask || isSavingTask || !hasTaskChanges}
            >
              {isSavingTask ? "Saving…" : "Save changes"}
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      <Dialog open={isDeleteDialogOpen} onOpenChange={setIsDeleteDialogOpen}>
        <DialogContent aria-label="Delete task">
          <DialogHeader>
            <DialogTitle>Delete task</DialogTitle>
            <DialogDescription>
              This removes the task permanently. This action cannot be undone.
            </DialogDescription>
          </DialogHeader>
          {deleteTaskError ? (
            <div className="rounded-lg border border-rose-200 bg-rose-50 p-3 text-xs text-rose-600">
              {deleteTaskError}
            </div>
          ) : null}
          <DialogFooter className="flex flex-wrap gap-2">
            <Button
              variant="outline"
              onClick={() => setIsDeleteDialogOpen(false)}
              disabled={isDeletingTask}
            >
              Cancel
            </Button>
            <Button
              onClick={handleDeleteTask}
              disabled={isDeletingTask}
              className="bg-rose-600 text-white hover:bg-rose-700"
            >
              {isDeletingTask ? "Deleting…" : "Delete task"}
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      <Dialog
        open={isDialogOpen}
        onOpenChange={(nextOpen) => {
          setIsDialogOpen(nextOpen);
          if (!nextOpen) {
            resetForm();
          }
        }}
      >
        <DialogContent aria-label={titleLabel}>
          <DialogHeader>
            <DialogTitle>New task</DialogTitle>
            <DialogDescription>
              Add a task to the inbox and triage it when you are ready.
            </DialogDescription>
          </DialogHeader>
          <div className="space-y-4">
            <div className="space-y-2">
              <label className="text-sm font-medium text-strong">Title</label>
              <Input
                value={title}
                onChange={(event) => setTitle(event.target.value)}
                placeholder="e.g. Prepare launch notes"
              />
            </div>
            <div className="space-y-2">
              <label className="text-sm font-medium text-strong">
                Description
              </label>
              <Textarea
                value={description}
                onChange={(event) => setDescription(event.target.value)}
                placeholder="Optional details"
                className="min-h-[120px]"
              />
            </div>
            <div className="space-y-2">
              <label className="text-sm font-medium text-strong">
                Priority
              </label>
              <Select value={priority} onValueChange={setPriority}>
                <SelectTrigger>
                  <SelectValue placeholder="Select priority" />
                </SelectTrigger>
                <SelectContent>
                  {priorities.map((item) => (
                    <SelectItem key={item.value} value={item.value}>
                      {item.label}
                    </SelectItem>
                  ))}
                </SelectContent>
              </Select>
            </div>
            {createError ? (
              <div className="rounded-lg border border-[color:var(--border)] bg-[color:var(--surface-muted)] p-3 text-xs text-muted">
                {createError}
              </div>
            ) : null}
          </div>
          <DialogFooter>
            <Button variant="outline" onClick={() => setIsDialogOpen(false)}>
              Cancel
            </Button>
            <Button onClick={handleCreateTask} disabled={isCreating}>
              {isCreating ? "Creating…" : "Create task"}
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      {/* onboarding moved to board settings */}
    </DashboardShell>
  );
}