diff --git a/packages/api/src/router/notification-broadcast-procedure-support.ts b/packages/api/src/router/notification-broadcast-procedure-support.ts
new file mode 100644
index 0000000..a5490e5
--- /dev/null
+++ b/packages/api/src/router/notification-broadcast-procedure-support.ts
@@ -0,0 +1,222 @@
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { findUniqueOrThrow } from "../db/helpers.js";
+import { createNotification } from "../lib/create-notification.js";
+import { resolveRecipients } from "../lib/notification-targeting.js";
+import {
+  emitNotificationCreated,
+  emitTaskAssigned,
+} from "../sse/event-bus.js";
+import {
+  type BroadcastPersistenceDb,
+  type BroadcastRecipientNotification,
+  CreateBroadcastInputSchema,
+  ListBroadcastsInputSchema,
+  type NotificationProcedureContext,
+  NotificationIdInputSchema,
+  requireNotificationDbUser,
+  rethrowNotificationReferenceError,
+  SCHEDULED_TASK_BROADCAST_UNSUPPORTED_MESSAGE,
+  sendNotificationEmail,
+} from "./notification-procedure-base.js";
+
+function isFutureScheduledBroadcast(input: z.infer<typeof CreateBroadcastInputSchema>): boolean {
+  return Boolean(input.scheduledAt && input.scheduledAt > new Date());
+}
+
+function hasTaskLikeBroadcastMetadata(input: z.infer<typeof CreateBroadcastInputSchema>): boolean {
+  return input.category === "TASK"
+    || input.category === "APPROVAL"
+    || input.taskAction !== undefined
+    || input.dueDate !== undefined;
+}
+
+function buildBroadcastCreateData(
+  senderId: string,
+  input: z.infer<typeof CreateBroadcastInputSchema>,
+  recipientCount?: number,
+) {
+  return {
+    senderId,
+    title: input.title,
+    ...(input.body !== undefined ? { body: input.body } : {}),
+    ...(input.link !== undefined ? { link: input.link } : {}),
+    category: input.category,
+    priority: input.priority,
+    channel: input.channel,
+    targetType: input.targetType,
+    ...(input.targetValue !== undefined ? { targetValue: input.targetValue } : {}),
+    ...(input.scheduledAt !== undefined ? { scheduledAt: input.scheduledAt } : {}),
+    ...(recipientCount !== undefined ? { recipientCount } : {}),
+  };
+}
+
+async function resolveBroadcastRecipientIds(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof CreateBroadcastInputSchema>,
+  senderId: string,
+): Promise<string[]> {
+  const recipientIds = await resolveRecipients(
+    input.targetType,
+    input.targetValue,
+    ctx.db,
+    senderId,
+  );
+
+  if (recipientIds.length === 0) {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: "No recipients matched the broadcast target.",
+    });
+  }
+
+  return recipientIds;
+}
+
+async function createScheduledBroadcastRecord(
+  db: BroadcastPersistenceDb,
+  senderId: string,
+  input: z.infer<typeof CreateBroadcastInputSchema>,
+  recipientIds: string[],
+) {
+  return db.notificationBroadcast.create({
+    data: buildBroadcastCreateData(senderId, input, recipientIds.length),
+  });
+}
+
+async function persistImmediateBroadcast(
+  db: BroadcastPersistenceDb,
+  senderId: string,
+  input: z.infer<typeof CreateBroadcastInputSchema>,
+  recipientIds: string[],
+) {
+  const isTask = input.category === "TASK" || input.category === "APPROVAL";
+  const sentAt = new Date();
+  const broadcast = await db.notificationBroadcast.create({
+    data: buildBroadcastCreateData(senderId, input),
+  });
+
+  const notificationIds: BroadcastRecipientNotification[] = [];
+  for (const recipientUserId of recipientIds) {
+    const notificationId = await createNotification({
+      db,
+      userId: recipientUserId,
+      type: `BROADCAST_${input.category}`,
+      title: input.title,
+      body: input.body,
+      link: input.link,
+      category: input.category,
+      priority: input.priority,
+      channel: input.channel,
+      sourceId: broadcast.id,
+      senderId,
+      taskStatus: isTask ? "OPEN" : undefined,
+      taskAction: input.taskAction,
+      dueDate: input.dueDate,
+      emit: false,
+    });
+    notificationIds.push({ id: notificationId, userId: recipientUserId });
+  }
+
+  const updatedBroadcast = await db.notificationBroadcast.update({
+    where: { id: broadcast.id },
+    data: {
+      sentAt,
+      recipientCount: notificationIds.length,
+    },
+  });
+
+  return { broadcast: updatedBroadcast, notificationIds };
+}
+
+function emitImmediateBroadcastSideEffects(
+  db: BroadcastPersistenceDb,
+  input: z.infer<typeof CreateBroadcastInputSchema>,
+  notificationIds: BroadcastRecipientNotification[],
+) {
+  const isTask = input.category === "TASK" || input.category === "APPROVAL";
+
+  for (const notification of notificationIds) {
+    emitNotificationCreated(notification.userId, notification.id);
+    if (isTask) {
+      emitTaskAssigned(notification.userId, notification.id);
+    }
+  }
+
+  if (input.channel === "email" || input.channel === "both") {
+    for (const notification of notificationIds) {
+      void sendNotificationEmail(db, notification.userId, input.title, input.body);
+    }
+  }
+}
+
+export async function createBroadcast(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof CreateBroadcastInputSchema>,
+) {
+  const senderId = requireNotificationDbUser(ctx).id;
+  const isScheduledFutureBroadcast = isFutureScheduledBroadcast(input);
+
+  if (isScheduledFutureBroadcast && hasTaskLikeBroadcastMetadata(input)) {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: SCHEDULED_TASK_BROADCAST_UNSUPPORTED_MESSAGE,
+    });
+  }
+
+  const recipientIds = await resolveBroadcastRecipientIds(ctx, input, senderId);
+
+  if (isScheduledFutureBroadcast) {
+    try {
+      return await createScheduledBroadcastRecord(ctx.db, senderId, input, recipientIds);
+    } catch (error) {
+      rethrowNotificationReferenceError(error);
+    }
+  }
+
+  let persistedBroadcast: Awaited<ReturnType<typeof persistImmediateBroadcast>>["broadcast"];
+  let notificationIds: BroadcastRecipientNotification[] = [];
+
+  try {
+    const transactionResult = typeof ctx.db.$transaction === "function"
+      ? await ctx.db.$transaction((tx) =>
+          persistImmediateBroadcast(tx as typeof ctx.db, senderId, input, recipientIds))
+      : await persistImmediateBroadcast(ctx.db, senderId, input, recipientIds);
+
+    persistedBroadcast = transactionResult.broadcast;
+    notificationIds = transactionResult.notificationIds;
+  } catch (error) {
+    rethrowNotificationReferenceError(error);
+  }
+
+  emitImmediateBroadcastSideEffects(ctx.db, input, notificationIds);
+  return persistedBroadcast;
+}
+
+export async function listBroadcasts(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof ListBroadcastsInputSchema>,
+) {
+  return ctx.db.notificationBroadcast.findMany({
+    orderBy: { createdAt: "desc" },
+    take: input.limit,
+    include: {
+      sender: { select: { id: true, name: true, email: true } },
+    },
+  });
+}
+
+export async function getBroadcastById(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof NotificationIdInputSchema>,
+) {
+  return findUniqueOrThrow(
+    ctx.db.notificationBroadcast.findUnique({
+      where: { id: input.id },
+      include: {
+        sender: { select: { id: true, name: true, email: true } },
+      },
+    }),
+    "Broadcast",
+  );
+}
diff --git a/packages/api/src/router/notification-procedure-base.ts b/packages/api/src/router/notification-procedure-base.ts
new file mode 100644
index 0000000..6a584e2
--- /dev/null
+++ b/packages/api/src/router/notification-procedure-base.ts
@@ -0,0 +1,398 @@
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { createNotification } from "../lib/create-notification.js";
+import { sendEmail } from "../lib/email.js";
+import { emitTaskAssigned } from "../sse/event-bus.js";
+import type { TRPCContext } from "../trpc.js";
+
+export type NotificationProcedureContext = Pick<TRPCContext, "db" | "dbUser" | "roleDefaults" | "session">;
+
+export function requireNotificationDbUser(ctx: NotificationProcedureContext) {
+  if (!ctx.dbUser) {
+    throw new TRPCError({ code: "UNAUTHORIZED", message: "User account not found" });
+  }
+
+  return ctx.dbUser;
+}
+
+export async function resolveUserId(ctx: {
+  db: {
+    user: {
+      findUnique: (args: {
+        where: { email: string };
+        select: { id: true };
+      }) => Promise<{ id: string } | null>;
+    };
+  };
+  session: { user?: { email?: string | null } | null } | null;
+}): Promise<string> {
+  const email = ctx.session?.user?.email;
+  if (!email) {
+    throw new TRPCError({ code: "UNAUTHORIZED" });
+  }
+
+  const user = await ctx.db.user.findUnique({
+    where: { email },
+    select: { id: true },
+  });
+  if (!user) {
+    throw new TRPCError({ code: "UNAUTHORIZED" });
+  }
+
+  return user.id;
+}
+
+export function getNotificationErrorCandidates(error: unknown): Array<{
+  code?: unknown;
+  message?: unknown;
+  meta?: { field_name?: unknown; modelName?: unknown };
+  cause?: unknown;
+}> {
+  const queue: unknown[] = [error];
+  const seen = new Set<unknown>();
+  const candidates: Array<{
+    code?: unknown;
+    message?: unknown;
+    meta?: { field_name?: unknown; modelName?: unknown };
+    cause?: unknown;
+  }> = [];
+
+  while (queue.length > 0) {
+    const current = queue.shift();
+    if (!current || seen.has(current) || typeof current !== "object") {
+      continue;
+    }
+    seen.add(current);
+
+    const candidate = current as {
+      code?: unknown;
+      message?: unknown;
+      meta?: { field_name?: unknown; modelName?: unknown };
+      cause?: unknown;
+      shape?: { message?: unknown; data?: { cause?: unknown } };
+    };
+    candidates.push(candidate);
+
+    if ("cause" in candidate) {
+      queue.push(candidate.cause);
+    }
+    if (candidate.shape?.data?.cause) {
+      queue.push(candidate.shape.data.cause);
+    }
+  }
+
+  return candidates;
+}
+
+export function rethrowNotificationReferenceError(error: unknown): never {
+  for (const candidate of getNotificationErrorCandidates(error)) {
+    const fieldName = typeof candidate.meta?.field_name === "string"
+      ? candidate.meta.field_name.toLowerCase()
+      : "";
+    const modelName = typeof candidate.meta?.modelName === "string"
+      ? candidate.meta.modelName.toLowerCase()
+      : "";
+
+    if (
+      typeof candidate.code === "string"
+      && (candidate.code === "P2003" || candidate.code === "P2025")
+      && fieldName.includes("sender")
+    ) {
+      throw new TRPCError({
+        code: "NOT_FOUND",
+        message: "Sender user not found",
+        cause: error,
+      });
+    }
+
+    if (
+      typeof candidate.code === "string"
+      && (candidate.code === "P2003" || candidate.code === "P2025")
+      && fieldName.includes("userid")
+    ) {
+      throw new TRPCError({
+        code: "NOT_FOUND",
+        message: "Broadcast recipient user not found",
+        cause: error,
+      });
+    }
+
+    if (
+      typeof candidate.code === "string"
+      && (candidate.code === "P2003" || candidate.code === "P2025")
+      && (
+        modelName.includes("notificationbroadcast")
+        || fieldName.includes("broadcast")
+        || fieldName.includes("sourceid")
+      )
+    ) {
+      throw new TRPCError({
+        code: "NOT_FOUND",
+        message: "Notification broadcast not found",
+        cause: error,
+      });
+    }
+  }
+
+  throw error;
+}
+
+export const categoryEnum = z.enum(["NOTIFICATION", "REMINDER", "TASK", "APPROVAL"]);
+export const priorityEnum = z.enum(["LOW", "NORMAL", "HIGH", "URGENT"]);
+export const taskStatusEnum = z.enum(["OPEN", "IN_PROGRESS", "DONE", "DISMISSED"]);
+export const channelEnum = z.enum(["in_app", "email", "both"]);
+export const recurrenceEnum = z.enum(["daily", "weekly", "monthly"]);
+export const targetTypeEnum = z.enum(["user", "role", "project", "orgUnit", "all"]);
+export const SCHEDULED_TASK_BROADCAST_UNSUPPORTED_MESSAGE =
+  "Scheduled broadcasts with task metadata are not supported yet.";
+
+export const NotificationListInputSchema = z.object({
+  unreadOnly: z.boolean().optional(),
+  category: categoryEnum.optional(),
+  taskStatus: taskStatusEnum.optional(),
+  priority: priorityEnum.optional(),
+  limit: z.number().min(1).max(100).default(50),
+});
+
+export const MarkNotificationReadInputSchema = z.object({
+  id: z.string().optional(),
+});
+
+export const CreateManagedNotificationInputSchema = z.object({
+  userId: z.string(),
+  type: z.string(),
+  title: z.string(),
+  body: z.string().optional(),
+  entityId: z.string().optional(),
+  entityType: z.string().optional(),
+  category: categoryEnum.optional(),
+  priority: priorityEnum.optional(),
+  link: z.string().optional(),
+  taskStatus: taskStatusEnum.optional(),
+  taskAction: z.string().optional(),
+  assigneeId: z.string().optional(),
+  dueDate: z.date().optional(),
+  channel: channelEnum.optional(),
+  senderId: z.string().optional(),
+});
+
+export const ListNotificationTasksInputSchema = z.object({
+  status: taskStatusEnum.optional(),
+  includeAssigned: z.boolean().default(true),
+  limit: z.number().min(1).max(100).default(20),
+});
+
+export const NotificationIdInputSchema = z.object({
+  id: z.string(),
+});
+
+export const UpdateNotificationTaskStatusInputSchema = z.object({
+  id: z.string(),
+  status: taskStatusEnum,
+});
+
+export const CreateReminderInputSchema = z.object({
+  title: z.string().min(1).max(200),
+  body: z.string().max(2000).optional(),
+  remindAt: z.date(),
+  recurrence: recurrenceEnum.optional(),
+  entityId: z.string().optional(),
+  entityType: z.string().optional(),
+  link: z.string().optional(),
+});
+
+export const UpdateReminderInputSchema = z.object({
+  id: z.string(),
+  title: z.string().min(1).max(200).optional(),
+  body: z.string().max(2000).optional(),
+  remindAt: z.date().optional(),
+  recurrence: recurrenceEnum.nullish(),
+});
+
+export const ListRemindersInputSchema = z.object({
+  limit: z.number().min(1).max(100).default(20),
+});
+
+export const CreateBroadcastInputSchema = z.object({
+  title: z.string().min(1).max(200),
+  body: z.string().max(2000).optional(),
+  link: z.string().optional(),
+  category: categoryEnum.default("NOTIFICATION"),
+  priority: priorityEnum.default("NORMAL"),
+  channel: channelEnum.default("in_app"),
+  targetType: targetTypeEnum,
+  targetValue: z.string().optional(),
+  scheduledAt: z.date().optional(),
+  taskAction: z.string().optional(),
+  dueDate: z.date().optional(),
+});
+
+export const ListBroadcastsInputSchema = z.object({
+  limit: z.number().min(1).max(50).default(20),
+});
+
+export const CreateTaskInputSchema = z.object({
+  userId: z.string(),
+  title: z.string().min(1).max(200),
+  body: z.string().max(2000).optional(),
+  priority: priorityEnum.default("NORMAL"),
+  dueDate: z.date().optional(),
+  taskAction: z.string().optional(),
+  entityId: z.string().optional(),
+  entityType: z.string().optional(),
+  link: z.string().optional(),
+  channel: channelEnum.default("in_app"),
+});
+
+export const AssignTaskInputSchema = z.object({
+  id: z.string(),
+  assigneeId: z.string(),
+});
+
+export type BroadcastRecipientNotification = { id: string; userId: string };
+export type BroadcastPersistenceDb = NotificationProcedureContext["db"];
+
+export async function sendNotificationEmail(
+  db: {
+    user: {
+      findUnique: (args: {
+        where: { id: string };
+        select: { email: true; name: true };
+      }) => Promise<{ email: string; name: string | null } | null>;
+    };
+  },
+  userId: string,
+  title: string,
+  body?: string | null,
+): Promise<void> {
+  try {
+    const user = await db.user.findUnique({
+      where: { id: userId },
+      select: { email: true, name: true },
+    });
+    if (!user) {
+      return;
+    }
+
+    void sendEmail({
+      to: user.email,
+      subject: title,
+      text: body ?? title,
+      ...(body !== undefined && body !== null ? { html: `<p>${body}</p>` } : {}),
+    });
+  } catch {
+    // non-blocking
+  }
+}
+
+export async function listNotifications(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof NotificationListInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  return ctx.db.notification.findMany({
+    where: {
+      userId,
+      ...(input.unreadOnly ? { readAt: null } : {}),
+      ...(input.category !== undefined ? { category: input.category } : {}),
+      ...(input.taskStatus !== undefined ? { taskStatus: input.taskStatus } : {}),
+      ...(input.priority !== undefined ? { priority: input.priority } : {}),
+    },
+    orderBy: { createdAt: "desc" },
+    take: input.limit,
+  });
+}
+
+export async function countUnreadNotifications(ctx: NotificationProcedureContext) {
+  const userId = await resolveUserId(ctx);
+  return ctx.db.notification.count({
+    where: { userId, readAt: null },
+  });
+}
+
+export async function markNotificationsRead(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof MarkNotificationReadInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const now = new Date();
+  if (input.id) {
+    await ctx.db.notification.update({
+      where: { id: input.id, userId },
+      data: { readAt: now },
+    });
+    return;
+  }
+
+  await ctx.db.notification.updateMany({
+    where: { userId, readAt: null },
+    data: { readAt: now },
+  });
+}
+
+export async function createManagedNotification(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof CreateManagedNotificationInputSchema>,
+) {
+  const currentUserId = requireNotificationDbUser(ctx).id;
+
+  const notificationId = await createNotification({
+    db: ctx.db,
+    userId: input.userId,
+    type: input.type,
+    title: input.title,
+    body: input.body,
+    entityId: input.entityId,
+    entityType: input.entityType,
+    category: input.category,
+    priority: input.priority,
+    link: input.link,
+    taskStatus: input.taskStatus,
+    taskAction: input.taskAction,
+    assigneeId: input.assigneeId,
+    dueDate: input.dueDate,
+    channel: input.channel,
+    senderId: input.senderId ?? currentUserId,
+  });
+
+  if (input.category === "TASK" || input.category === "APPROVAL") {
+    emitTaskAssigned(input.userId, notificationId);
+  }
+
+  const channel = input.channel ?? "in_app";
+  if (channel === "email" || channel === "both") {
+    void sendNotificationEmail(ctx.db, input.userId, input.title, input.body);
+  }
+
+  return ctx.db.notification.findUnique({ where: { id: notificationId } });
+}
+
+export async function deleteNotification(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof NotificationIdInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const existing = await ctx.db.notification.findFirst({
+    where: { id: input.id, userId },
+  });
+
+  if (!existing) {
+    throw new TRPCError({
+      code: "NOT_FOUND",
+      message: "Notification not found",
+    });
+  }
+
+  if (
+    (existing.category === "TASK" || existing.category === "APPROVAL")
+    && existing.senderId
+    && existing.senderId !== userId
+  ) {
+    throw new TRPCError({
+      code: "FORBIDDEN",
+      message: "Cannot delete tasks created by others",
+    });
+  }
+
+  await ctx.db.notification.delete({ where: { id: input.id } });
+}
diff --git a/packages/api/src/router/notification-procedure-support.ts b/packages/api/src/router/notification-procedure-support.ts
index 6b74ee2..2c9030a 100644
--- a/packages/api/src/router/notification-procedure-support.ts
+++ b/packages/api/src/router/notification-procedure-support.ts
@@ -1,945 +1,4 @@
-import { PermissionKey, parseTaskAction, resolvePermissions } from "@capakraken/shared";
-import { TRPCError } from "@trpc/server";
-import { z } from "zod";
-import { findUniqueOrThrow } from "../db/helpers.js";
-import { sendEmail } from "../lib/email.js";
-import { createNotification } from "../lib/create-notification.js";
-import { resolveRecipients } from "../lib/notification-targeting.js";
-import { getTaskAction } from "../lib/task-actions.js";
-import {
-  emitNotificationCreated,
-  emitTaskAssigned,
-  emitTaskCompleted,
-  emitTaskStatusChanged,
-} from "../sse/event-bus.js";
-import type { TRPCContext } from "../trpc.js";
-
-type NotificationProcedureContext = Pick<TRPCContext, "db" | "dbUser" | "roleDefaults" | "session">;
-
-export async function resolveUserId(ctx: {
-  db: {
-    user: {
-      findUnique: (args: {
-        where: { email: string };
-        select: { id: true };
-      }) => Promise<{ id: string } | null>;
-    };
-  };
-  session: { user?: { email?: string | null } | null };
-}): Promise<string> {
-  const email = ctx.session.user?.email;
-  if (!email) {
-    throw new TRPCError({ code: "UNAUTHORIZED" });
-  }
-
-  const user = await ctx.db.user.findUnique({
-    where: { email },
-    select: { id: true },
-  });
-  if (!user) {
-    throw new TRPCError({ code: "UNAUTHORIZED" });
-  }
-
-  return user.id;
-}
-
-async function sendNotificationEmail(
-  db: {
-    user: {
-      findUnique: (args: {
-        where: { id: string };
-        select: { email: true; name: true };
-      }) => Promise<{ email: string; name: string | null } | null>;
-    };
-  },
-  userId: string,
-  title: string,
-  body?: string | null,
-): Promise<void> {
-  try {
-    const user = await db.user.findUnique({
-      where: { id: userId },
-      select: { email: true, name: true },
-    });
-    if (!user) {
-      return;
-    }
-
-    void sendEmail({
-      to: user.email,
-      subject: title,
-      text: body ?? title,
-      ...(body !== undefined && body !== null ? { html: `<p>${body}</p>` } : {}),
-    });
-  } catch {
-    // non-blocking
-  }
-}
-
-export function getNotificationErrorCandidates(error: unknown): Array<{
-  code?: unknown;
-  message?: unknown;
-  meta?: { field_name?: unknown; modelName?: unknown };
-  cause?: unknown;
-}> {
-  const queue: unknown[] = [error];
-  const seen = new Set<unknown>();
-  const candidates: Array<{
-    code?: unknown;
-    message?: unknown;
-    meta?: { field_name?: unknown; modelName?: unknown };
-    cause?: unknown;
-  }> = [];
-
-  while (queue.length > 0) {
-    const current = queue.shift();
-    if (!current || seen.has(current) || typeof current !== "object") {
-      continue;
-    }
-    seen.add(current);
-
-    const candidate = current as {
-      code?: unknown;
-      message?: unknown;
-      meta?: { field_name?: unknown; modelName?: unknown };
-      cause?: unknown;
-      shape?: { message?: unknown; data?: { cause?: unknown } };
-    };
-    candidates.push(candidate);
-
-    if ("cause" in candidate) {
-      queue.push(candidate.cause);
-    }
-    if (candidate.shape?.data?.cause) {
-      queue.push(candidate.shape.data.cause);
-    }
-  }
-
-  return candidates;
-}
-
-export function rethrowNotificationReferenceError(error: unknown): never {
-  for (const candidate of getNotificationErrorCandidates(error)) {
-    const fieldName = typeof candidate.meta?.field_name === "string"
-      ? candidate.meta.field_name.toLowerCase()
-      : "";
-    const modelName = typeof candidate.meta?.modelName === "string"
-      ? candidate.meta.modelName.toLowerCase()
-      : "";
-
-    if (
-      typeof candidate.code === "string"
-      && (candidate.code === "P2003" || candidate.code === "P2025")
-      && fieldName.includes("sender")
-    ) {
-      throw new TRPCError({
-        code: "NOT_FOUND",
-        message: "Sender user not found",
-        cause: error,
-      });
-    }
-
-    if (
-      typeof candidate.code === "string"
-      && (candidate.code === "P2003" || candidate.code === "P2025")
-      && fieldName.includes("userid")
-    ) {
-      throw new TRPCError({
-        code: "NOT_FOUND",
-        message: "Broadcast recipient user not found",
-        cause: error,
-      });
-    }
-
-    if (
-      typeof candidate.code === "string"
-      && (candidate.code === "P2003" || candidate.code === "P2025")
-      && (modelName.includes("notificationbroadcast") || fieldName.includes("broadcast"))
-    ) {
-      throw new TRPCError({
-        code: "NOT_FOUND",
-        message: "Notification broadcast not found",
-        cause: error,
-      });
-    }
-  }
-
-  throw error;
-}
-
-export const categoryEnum = z.enum(["NOTIFICATION", "REMINDER", "TASK", "APPROVAL"]);
-export const priorityEnum = z.enum(["LOW", "NORMAL", "HIGH", "URGENT"]);
-export const taskStatusEnum = z.enum(["OPEN", "IN_PROGRESS", "DONE", "DISMISSED"]);
-export const channelEnum = z.enum(["in_app", "email", "both"]);
-export const recurrenceEnum = z.enum(["daily", "weekly", "monthly"]);
-export const targetTypeEnum = z.enum(["user", "role", "project", "orgUnit", "all"]);
-export const SCHEDULED_TASK_BROADCAST_UNSUPPORTED_MESSAGE =
-  "Scheduled broadcasts with task metadata are not supported yet.";
-
-export const NotificationListInputSchema = z.object({
-  unreadOnly: z.boolean().optional(),
-  category: categoryEnum.optional(),
-  taskStatus: taskStatusEnum.optional(),
-  priority: priorityEnum.optional(),
-  limit: z.number().min(1).max(100).default(50),
-});
-
-export const MarkNotificationReadInputSchema = z.object({
-  id: z.string().optional(),
-});
-
-export const CreateManagedNotificationInputSchema = z.object({
-  userId: z.string(),
-  type: z.string(),
-  title: z.string(),
-  body: z.string().optional(),
-  entityId: z.string().optional(),
-  entityType: z.string().optional(),
-  category: categoryEnum.optional(),
-  priority: priorityEnum.optional(),
-  link: z.string().optional(),
-  taskStatus: taskStatusEnum.optional(),
-  taskAction: z.string().optional(),
-  assigneeId: z.string().optional(),
-  dueDate: z.date().optional(),
-  channel: channelEnum.optional(),
-  senderId: z.string().optional(),
-});
-
-export const ListNotificationTasksInputSchema = z.object({
-  status: taskStatusEnum.optional(),
-  includeAssigned: z.boolean().default(true),
-  limit: z.number().min(1).max(100).default(20),
-});
-
-export const NotificationIdInputSchema = z.object({
-  id: z.string(),
-});
-
-export const UpdateNotificationTaskStatusInputSchema = z.object({
-  id: z.string(),
-  status: taskStatusEnum,
-});
-
-export const CreateReminderInputSchema = z.object({
-  title: z.string().min(1).max(200),
-  body: z.string().max(2000).optional(),
-  remindAt: z.date(),
-  recurrence: recurrenceEnum.optional(),
-  entityId: z.string().optional(),
-  entityType: z.string().optional(),
-  link: z.string().optional(),
-});
-
-export const UpdateReminderInputSchema = z.object({
-  id: z.string(),
-  title: z.string().min(1).max(200).optional(),
-  body: z.string().max(2000).optional(),
-  remindAt: z.date().optional(),
-  recurrence: recurrenceEnum.nullish(),
-});
-
-export const ListRemindersInputSchema = z.object({
-  limit: z.number().min(1).max(100).default(20),
-});
-
-export const CreateBroadcastInputSchema = z.object({
-  title: z.string().min(1).max(200),
-  body: z.string().max(2000).optional(),
-  link: z.string().optional(),
-  category: categoryEnum.default("NOTIFICATION"),
-  priority: priorityEnum.default("NORMAL"),
-  channel: channelEnum.default("in_app"),
-  targetType: targetTypeEnum,
-  targetValue: z.string().optional(),
-  scheduledAt: z.date().optional(),
-  taskAction: z.string().optional(),
-  dueDate: z.date().optional(),
-});
-
-export const ListBroadcastsInputSchema = z.object({
-  limit: z.number().min(1).max(50).default(20),
-});
-
-export const CreateTaskInputSchema = z.object({
-  userId: z.string(),
-  title: z.string().min(1).max(200),
-  body: z.string().max(2000).optional(),
-  priority: priorityEnum.default("NORMAL"),
-  dueDate: z.date().optional(),
-  taskAction: z.string().optional(),
-  entityId: z.string().optional(),
-  entityType: z.string().optional(),
-  link: z.string().optional(),
-  channel: channelEnum.default("in_app"),
-});
-
-export const AssignTaskInputSchema = z.object({
-  id: z.string(),
-  assigneeId: z.string(),
-});
-
-type NotificationListInput = z.infer<typeof NotificationListInputSchema>;
-type MarkNotificationReadInput = z.infer<typeof MarkNotificationReadInputSchema>;
-type CreateManagedNotificationInput = z.infer<typeof CreateManagedNotificationInputSchema>;
-type ListNotificationTasksInput = z.infer<typeof ListNotificationTasksInputSchema>;
-type NotificationIdInput = z.infer<typeof NotificationIdInputSchema>;
-type UpdateNotificationTaskStatusInput = z.infer<typeof UpdateNotificationTaskStatusInputSchema>;
-type CreateReminderInput = z.infer<typeof CreateReminderInputSchema>;
-type UpdateReminderInput = z.infer<typeof UpdateReminderInputSchema>;
-type ListRemindersInput = z.infer<typeof ListRemindersInputSchema>;
-type CreateBroadcastInput = z.infer<typeof CreateBroadcastInputSchema>;
-type ListBroadcastsInput = z.infer<typeof ListBroadcastsInputSchema>;
-type CreateTaskInput = z.infer<typeof CreateTaskInputSchema>;
-type AssignTaskInput = z.infer<typeof AssignTaskInputSchema>;
-
-export async function listNotifications(
-  ctx: NotificationProcedureContext,
-  input: NotificationListInput,
-) {
-  const userId = await resolveUserId(ctx);
-  return ctx.db.notification.findMany({
-    where: {
-      userId,
-      ...(input.unreadOnly ? { readAt: null } : {}),
-      ...(input.category !== undefined ? { category: input.category } : {}),
-      ...(input.taskStatus !== undefined ? { taskStatus: input.taskStatus } : {}),
-      ...(input.priority !== undefined ? { priority: input.priority } : {}),
-    },
-    orderBy: { createdAt: "desc" },
-    take: input.limit,
-  });
-}
-
-export async function countUnreadNotifications(ctx: NotificationProcedureContext) {
-  const userId = await resolveUserId(ctx);
-  return ctx.db.notification.count({
-    where: { userId, readAt: null },
-  });
-}
-
-export async function markNotificationsRead(
-  ctx: NotificationProcedureContext,
-  input: MarkNotificationReadInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const now = new Date();
-  if (input.id) {
-    await ctx.db.notification.update({
-      where: { id: input.id, userId },
-      data: { readAt: now },
-    });
-    return;
-  }
-
-  await ctx.db.notification.updateMany({
-    where: { userId, readAt: null },
-    data: { readAt: now },
-  });
-}
-
-export async function createManagedNotification(
-  ctx: NotificationProcedureContext,
-  input: CreateManagedNotificationInput,
-) {
-  const currentUserId = ctx.dbUser.id;
-
-  const notificationId = await createNotification({
-    db: ctx.db,
-    userId: input.userId,
-    type: input.type,
-    title: input.title,
-    body: input.body,
-    entityId: input.entityId,
-    entityType: input.entityType,
-    category: input.category,
-    priority: input.priority,
-    link: input.link,
-    taskStatus: input.taskStatus,
-    taskAction: input.taskAction,
-    assigneeId: input.assigneeId,
-    dueDate: input.dueDate,
-    channel: input.channel,
-    senderId: input.senderId ?? currentUserId,
-  });
-
-  if (input.category === "TASK" || input.category === "APPROVAL") {
-    emitTaskAssigned(input.userId, notificationId);
-  }
-
-  const channel = input.channel ?? "in_app";
-  if (channel === "email" || channel === "both") {
-    void sendNotificationEmail(ctx.db, input.userId, input.title, input.body);
-  }
-
-  return ctx.db.notification.findUnique({ where: { id: notificationId } });
-}
-
-export async function listNotificationTasks(
-  ctx: NotificationProcedureContext,
-  input: ListNotificationTasksInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const userFilter = input.includeAssigned
-    ? { OR: [{ userId }, { assigneeId: userId }] }
-    : { userId };
-
-  return ctx.db.notification.findMany({
-    where: {
-      ...userFilter,
-      category: { in: ["TASK", "APPROVAL"] },
-      ...(input.status !== undefined ? { taskStatus: input.status } : {}),
-    },
-    orderBy: [{ priority: "desc" }, { dueDate: "asc" }, { createdAt: "desc" }],
-    take: input.limit,
-  });
-}
-
-export async function getNotificationTaskCounts(ctx: NotificationProcedureContext) {
-  const userId = await resolveUserId(ctx);
-  const now = new Date();
-  const where = {
-    OR: [{ userId }, { assigneeId: userId }],
-    category: { in: ["TASK" as const, "APPROVAL" as const] },
-  };
-
-  const [grouped, overdue] = await Promise.all([
-    ctx.db.notification.groupBy({
-      by: ["taskStatus"],
-      where,
-      _count: true,
-    }),
-    ctx.db.notification.count({
-      where: {
-        ...where,
-        taskStatus: { in: ["OPEN", "IN_PROGRESS"] },
-        dueDate: { lt: now },
-      },
-    }),
-  ]);
-
-  const counts: Record<string, number> = {};
-  for (const group of grouped) {
-    if (group.taskStatus) {
-      counts[group.taskStatus] = group._count;
-    }
-  }
-
-  return {
-    open: counts.OPEN ?? 0,
-    inProgress: counts.IN_PROGRESS ?? 0,
-    done: counts.DONE ?? 0,
-    dismissed: counts.DISMISSED ?? 0,
-    overdue,
-  };
-}
-
-export async function getNotificationTaskDetail(
-  ctx: NotificationProcedureContext,
-  input: NotificationIdInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const task = await ctx.db.notification.findFirst({
-    where: {
-      id: input.id,
-      OR: [{ userId }, { assigneeId: userId }],
-      category: { in: ["TASK", "APPROVAL"] },
-    },
-    select: {
-      id: true,
-      title: true,
-      body: true,
-      type: true,
-      priority: true,
-      category: true,
-      taskStatus: true,
-      taskAction: true,
-      dueDate: true,
-      entityId: true,
-      entityType: true,
-      completedAt: true,
-      completedBy: true,
-      createdAt: true,
-      userId: true,
-      assigneeId: true,
-      sender: { select: { id: true, name: true, email: true } },
-    },
-  });
-
-  if (!task) {
-    throw new TRPCError({
-      code: "NOT_FOUND",
-      message: "Task not found or you do not have permission",
-    });
-  }
-
-  return task;
-}
-
-export async function updateNotificationTaskStatus(
-  ctx: NotificationProcedureContext,
-  input: UpdateNotificationTaskStatusInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const existing = await ctx.db.notification.findFirst({
-    where: {
-      id: input.id,
-      OR: [{ userId }, { assigneeId: userId }],
-    },
-  });
-
-  if (!existing) {
-    throw new TRPCError({
-      code: "NOT_FOUND",
-      message: "Task not found or you do not have permission",
-    });
-  }
-
-  const isCompleting = input.status === "DONE";
-  const updated = await ctx.db.notification.update({
-    where: { id: input.id },
-    data: {
-      taskStatus: input.status,
-      ...(isCompleting ? { completedAt: new Date(), completedBy: userId } : {}),
-    },
-  });
-
-  if (isCompleting) {
-    emitTaskCompleted(existing.userId, updated.id);
-    if (existing.assigneeId && existing.assigneeId !== existing.userId) {
-      emitTaskCompleted(existing.assigneeId, updated.id);
-    }
-  } else {
-    emitTaskStatusChanged(existing.userId, updated.id);
-    if (existing.assigneeId && existing.assigneeId !== existing.userId) {
-      emitTaskStatusChanged(existing.assigneeId, updated.id);
-    }
-  }
-
-  return updated;
-}
-
-export async function executeNotificationTaskAction(
-  ctx: NotificationProcedureContext,
-  input: NotificationIdInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const task = await ctx.db.notification.findFirst({
-    where: {
-      id: input.id,
-      OR: [{ userId }, { assigneeId: userId }],
-      category: { in: ["TASK", "APPROVAL"] },
-    },
-    select: {
-      id: true,
-      userId: true,
-      assigneeId: true,
-      taskAction: true,
-      taskStatus: true,
-    },
-  });
-
-  if (!task) {
-    throw new TRPCError({
-      code: "NOT_FOUND",
-      message: "Task not found or you do not have permission",
-    });
-  }
-  if (!task.taskAction) {
-    throw new TRPCError({
-      code: "PRECONDITION_FAILED",
-      message: "This task has no executable action",
-    });
-  }
-  if (task.taskStatus === "DONE") {
-    throw new TRPCError({
-      code: "PRECONDITION_FAILED",
-      message: "This task is already completed",
-    });
-  }
-
-  const parsed = parseTaskAction(task.taskAction);
-  if (!parsed) {
-    throw new TRPCError({
-      code: "BAD_REQUEST",
-      message: `Invalid taskAction format: ${task.taskAction}`,
-    });
-  }
-
-  const handler = getTaskAction(parsed.action);
-  if (!handler) {
-    throw new TRPCError({
-      code: "BAD_REQUEST",
-      message: `Unknown action: ${parsed.action}`,
-    });
-  }
-
-  const permissions = resolvePermissions(
-    ctx.dbUser.systemRole as import("@capakraken/shared").SystemRole,
-    ctx.dbUser.permissionOverrides as import("@capakraken/shared").PermissionOverrides | null,
-    ctx.roleDefaults ?? undefined,
-  );
-  if (handler.permission && !permissions.has(handler.permission as PermissionKey)) {
-    throw new TRPCError({
-      code: "FORBIDDEN",
-      message: `Permission denied: you need "${handler.permission}" to perform this action`,
-    });
-  }
-
-  const actionResult = await handler.execute(parsed.entityId, ctx.db, userId);
-  if (!actionResult.success) {
-    throw new TRPCError({
-      code: "BAD_REQUEST",
-      message: actionResult.message,
-    });
-  }
-
-  const completedTask = await ctx.db.notification.update({
-    where: { id: input.id },
-    data: {
-      taskStatus: "DONE",
-      completedAt: new Date(),
-      completedBy: userId,
-    },
-  });
-
-  emitTaskCompleted(task.userId, task.id);
-  if (task.assigneeId && task.assigneeId !== task.userId) {
-    emitTaskCompleted(task.assigneeId, task.id);
-  }
-
-  return {
-    task: completedTask,
-    actionResult,
-  };
-}
-
-export async function createReminder(
-  ctx: NotificationProcedureContext,
-  input: CreateReminderInput,
-) {
-  const userId = await resolveUserId(ctx);
-  return ctx.db.notification.create({
-    data: {
-      userId,
-      type: "REMINDER",
-      category: "REMINDER",
-      title: input.title,
-      ...(input.body !== undefined ? { body: input.body } : {}),
-      remindAt: input.remindAt,
-      nextRemindAt: input.remindAt,
-      ...(input.recurrence !== undefined ? { recurrence: input.recurrence } : {}),
-      ...(input.entityId !== undefined ? { entityId: input.entityId } : {}),
-      ...(input.entityType !== undefined ? { entityType: input.entityType } : {}),
-      ...(input.link !== undefined ? { link: input.link } : {}),
-      channel: "in_app",
-    },
-  });
-}
-
-export async function updateReminder(
-  ctx: NotificationProcedureContext,
-  input: UpdateReminderInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const existing = await ctx.db.notification.findFirst({
-    where: { id: input.id, userId, category: "REMINDER" },
-  });
-
-  if (!existing) {
-    throw new TRPCError({
-      code: "NOT_FOUND",
-      message: "Reminder not found or you do not have permission",
-    });
-  }
-
-  return ctx.db.notification.update({
-    where: { id: input.id },
-    data: {
-      ...(input.title !== undefined ? { title: input.title } : {}),
-      ...(input.body !== undefined ? { body: input.body } : {}),
-      ...(input.remindAt !== undefined
-        ? { remindAt: input.remindAt, nextRemindAt: input.remindAt }
-        : {}),
-      ...(input.recurrence !== undefined ? { recurrence: input.recurrence } : {}),
-    },
-  });
-}
-
-export async function deleteReminder(
-  ctx: NotificationProcedureContext,
-  input: NotificationIdInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const existing = await ctx.db.notification.findFirst({
-    where: { id: input.id, userId, category: "REMINDER" },
-  });
-
-  if (!existing) {
-    throw new TRPCError({
-      code: "NOT_FOUND",
-      message: "Reminder not found or you do not have permission",
-    });
-  }
-
-  await ctx.db.notification.delete({ where: { id: input.id } });
-}
-
-export async function listReminders(
-  ctx: NotificationProcedureContext,
-  input: ListRemindersInput,
-) {
-  const userId = await resolveUserId(ctx);
-  return ctx.db.notification.findMany({
-    where: { userId, category: "REMINDER" },
-    orderBy: { nextRemindAt: "asc" },
-    take: input.limit,
-  });
-}
-
-export async function createBroadcast(
-  ctx: NotificationProcedureContext,
-  input: CreateBroadcastInput,
-) {
-  const senderId = ctx.dbUser.id;
-  const isScheduledFutureBroadcast = Boolean(input.scheduledAt && input.scheduledAt > new Date());
-  const hasTaskLikeMetadata =
-    input.category === "TASK"
-    || input.category === "APPROVAL"
-    || input.taskAction !== undefined
-    || input.dueDate !== undefined;
-
-  if (isScheduledFutureBroadcast && hasTaskLikeMetadata) {
-    throw new TRPCError({
-      code: "BAD_REQUEST",
-      message: SCHEDULED_TASK_BROADCAST_UNSUPPORTED_MESSAGE,
-    });
-  }
-
-  const recipientIds = await resolveRecipients(
-    input.targetType,
-    input.targetValue,
-    ctx.db,
-    senderId,
-  );
-
-  if (recipientIds.length === 0) {
-    throw new TRPCError({
-      code: "BAD_REQUEST",
-      message: "No recipients matched the broadcast target.",
-    });
-  }
-
-  if (isScheduledFutureBroadcast) {
-    return ctx.db.notificationBroadcast.create({
-      data: {
-        senderId,
-        title: input.title,
-        ...(input.body !== undefined ? { body: input.body } : {}),
-        ...(input.link !== undefined ? { link: input.link } : {}),
-        category: input.category,
-        priority: input.priority,
-        channel: input.channel,
-        targetType: input.targetType,
-        ...(input.targetValue !== undefined ? { targetValue: input.targetValue } : {}),
-        ...(input.scheduledAt !== undefined ? { scheduledAt: input.scheduledAt } : {}),
-        recipientCount: recipientIds.length,
-      },
-    });
-  }
-
-  const isTask = input.category === "TASK" || input.category === "APPROVAL";
-  const sentAt = new Date();
-  const runImmediateBroadcast = async (db: typeof ctx.db) => {
-    const broadcast = await db.notificationBroadcast.create({
-      data: {
-        senderId,
-        title: input.title,
-        ...(input.body !== undefined ? { body: input.body } : {}),
-        ...(input.link !== undefined ? { link: input.link } : {}),
-        category: input.category,
-        priority: input.priority,
-        channel: input.channel,
-        targetType: input.targetType,
-        ...(input.targetValue !== undefined ? { targetValue: input.targetValue } : {}),
-        ...(input.scheduledAt !== undefined ? { scheduledAt: input.scheduledAt } : {}),
-      },
-    });
-
-    const createdNotificationIds: Array<{ id: string; userId: string }> = [];
-    for (const recipientUserId of recipientIds) {
-      const notificationId = await createNotification({
-        db,
-        userId: recipientUserId,
-        type: `BROADCAST_${input.category}`,
-        title: input.title,
-        body: input.body,
-        link: input.link,
-        category: input.category,
-        priority: input.priority,
-        channel: input.channel,
-        sourceId: broadcast.id,
-        senderId,
-        taskStatus: isTask ? "OPEN" : undefined,
-        taskAction: input.taskAction,
-        dueDate: input.dueDate,
-        emit: false,
-      });
-      createdNotificationIds.push({ id: notificationId, userId: recipientUserId });
-    }
-
-    const updatedBroadcast = await db.notificationBroadcast.update({
-      where: { id: broadcast.id },
-      data: {
-        sentAt,
-        recipientCount: createdNotificationIds.length,
-      },
-    });
-
-    return { broadcast: updatedBroadcast, notificationIds: createdNotificationIds };
-  };
-
-  let persistedBroadcast: Awaited<ReturnType<typeof runImmediateBroadcast>>["broadcast"];
-  let notificationIds: Array<{ id: string; userId: string }> = [];
-
-  try {
-    const transactionResult = typeof ctx.db.$transaction === "function"
-      ? await ctx.db.$transaction((tx) => runImmediateBroadcast(tx as typeof ctx.db))
-      : await runImmediateBroadcast(ctx.db);
-
-    persistedBroadcast = transactionResult.broadcast;
-    notificationIds = transactionResult.notificationIds;
-  } catch (error) {
-    rethrowNotificationReferenceError(error);
-  }
-
-  for (const notification of notificationIds) {
-    emitNotificationCreated(notification.userId, notification.id);
-    if (isTask) {
-      emitTaskAssigned(notification.userId, notification.id);
-    }
-  }
-
-  if (input.channel === "email" || input.channel === "both") {
-    for (const notification of notificationIds) {
-      void sendNotificationEmail(ctx.db, notification.userId, input.title, input.body);
-    }
-  }
-
-  return persistedBroadcast;
-}
-
-export async function listBroadcasts(
-  ctx: NotificationProcedureContext,
-  input: ListBroadcastsInput,
-) {
-  return ctx.db.notificationBroadcast.findMany({
-    orderBy: { createdAt: "desc" },
-    take: input.limit,
-    include: {
-      sender: { select: { id: true, name: true, email: true } },
-    },
-  });
-}
-
-export async function getBroadcastById(
-  ctx: NotificationProcedureContext,
-  input: NotificationIdInput,
-) {
-  return findUniqueOrThrow(
-    ctx.db.notificationBroadcast.findUnique({
-      where: { id: input.id },
-      include: {
-        sender: { select: { id: true, name: true, email: true } },
-      },
-    }),
-    "Broadcast",
-  );
-}
-
-export async function createTask(
-  ctx: NotificationProcedureContext,
-  input: CreateTaskInput,
-) {
-  const senderId = ctx.dbUser.id;
-  const notificationId = await createNotification({
-    db: ctx.db,
-    userId: input.userId,
-    type: "TASK_CREATED",
-    category: "TASK",
-    taskStatus: "OPEN",
-    title: input.title,
-    priority: input.priority,
-    senderId,
-    channel: input.channel,
-    body: input.body,
-    dueDate: input.dueDate,
-    taskAction: input.taskAction,
-    entityId: input.entityId,
-    entityType: input.entityType,
-    link: input.link,
-  });
-
-  emitTaskAssigned(input.userId, notificationId);
-
-  if (input.channel === "email" || input.channel === "both") {
-    void sendNotificationEmail(ctx.db, input.userId, input.title, input.body);
-  }
-
-  return ctx.db.notification.findUnique({ where: { id: notificationId } });
-}
-
-export async function assignTask(
-  ctx: NotificationProcedureContext,
-  input: AssignTaskInput,
-) {
-  const existing = await findUniqueOrThrow(
-    ctx.db.notification.findUnique({ where: { id: input.id } }),
-    "Task",
-  );
-
-  if (existing.category !== "TASK" && existing.category !== "APPROVAL") {
-    throw new TRPCError({
-      code: "BAD_REQUEST",
-      message: "Only tasks and approvals can be assigned",
-    });
-  }
-
-  const updated = await ctx.db.notification.update({
-    where: { id: input.id },
-    data: { assigneeId: input.assigneeId },
-  });
-
-  emitTaskAssigned(input.assigneeId, updated.id);
-  return updated;
-}
-
-export async function deleteNotification(
-  ctx: NotificationProcedureContext,
-  input: NotificationIdInput,
-) {
-  const userId = await resolveUserId(ctx);
-  const existing = await ctx.db.notification.findFirst({
-    where: { id: input.id, userId },
-  });
-
-  if (!existing) {
-    throw new TRPCError({
-      code: "NOT_FOUND",
-      message: "Notification not found",
-    });
-  }
-
-  if (
-    (existing.category === "TASK" || existing.category === "APPROVAL")
-    && existing.senderId
-    && existing.senderId !== userId
-  ) {
-    throw new TRPCError({
-      code: "FORBIDDEN",
-      message: "Cannot delete tasks created by others",
-    });
-  }
-
-  await ctx.db.notification.delete({ where: { id: input.id } });
-}
+export * from "./notification-procedure-base.js";
+export * from "./notification-task-procedure-support.js";
+export * from "./notification-reminder-procedure-support.js";
+export * from "./notification-broadcast-procedure-support.js";
diff --git a/packages/api/src/router/notification-reminder-procedure-support.ts b/packages/api/src/router/notification-reminder-procedure-support.ts
new file mode 100644
index 0000000..c1f3b21
--- /dev/null
+++ b/packages/api/src/router/notification-reminder-procedure-support.ts
@@ -0,0 +1,93 @@
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import {
+  CreateReminderInputSchema,
+  ListRemindersInputSchema,
+  type NotificationProcedureContext,
+  NotificationIdInputSchema,
+  resolveUserId,
+  UpdateReminderInputSchema,
+} from "./notification-procedure-base.js";
+
+export async function createReminder(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof CreateReminderInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  return ctx.db.notification.create({
+    data: {
+      userId,
+      type: "REMINDER",
+      category: "REMINDER",
+      title: input.title,
+      ...(input.body !== undefined ? { body: input.body } : {}),
+      remindAt: input.remindAt,
+      nextRemindAt: input.remindAt,
+      ...(input.recurrence !== undefined ? { recurrence: input.recurrence } : {}),
+      ...(input.entityId !== undefined ? { entityId: input.entityId } : {}),
+      ...(input.entityType !== undefined ? { entityType: input.entityType } : {}),
+      ...(input.link !== undefined ? { link: input.link } : {}),
+      channel: "in_app",
+    },
+  });
+}
+
+export async function updateReminder(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof UpdateReminderInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const existing = await ctx.db.notification.findFirst({
+    where: { id: input.id, userId, category: "REMINDER" },
+  });
+
+  if (!existing) {
+    throw new TRPCError({
+      code: "NOT_FOUND",
+      message: "Reminder not found or you do not have permission",
+    });
+  }
+
+  return ctx.db.notification.update({
+    where: { id: input.id },
+    data: {
+      ...(input.title !== undefined ? { title: input.title } : {}),
+      ...(input.body !== undefined ? { body: input.body } : {}),
+      ...(input.remindAt !== undefined
+        ? { remindAt: input.remindAt, nextRemindAt: input.remindAt }
+        : {}),
+      ...(input.recurrence !== undefined ? { recurrence: input.recurrence } : {}),
+    },
+  });
+}
+
+export async function deleteReminder(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof NotificationIdInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const existing = await ctx.db.notification.findFirst({
+    where: { id: input.id, userId, category: "REMINDER" },
+  });
+
+  if (!existing) {
+    throw new TRPCError({
+      code: "NOT_FOUND",
+      message: "Reminder not found or you do not have permission",
+    });
+  }
+
+  await ctx.db.notification.delete({ where: { id: input.id } });
+}
+
+export async function listReminders(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof ListRemindersInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  return ctx.db.notification.findMany({
+    where: { userId, category: "REMINDER" },
+    orderBy: { nextRemindAt: "asc" },
+    take: input.limit,
+  });
+}
diff --git a/packages/api/src/router/notification-task-procedure-support.ts b/packages/api/src/router/notification-task-procedure-support.ts
new file mode 100644
index 0000000..ab664f4
--- /dev/null
+++ b/packages/api/src/router/notification-task-procedure-support.ts
@@ -0,0 +1,319 @@
+import { PermissionKey, parseTaskAction, resolvePermissions } from "@capakraken/shared";
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { findUniqueOrThrow } from "../db/helpers.js";
+import { createNotification } from "../lib/create-notification.js";
+import { getTaskAction } from "../lib/task-actions.js";
+import {
+  emitTaskAssigned,
+  emitTaskCompleted,
+  emitTaskStatusChanged,
+} from "../sse/event-bus.js";
+import {
+  AssignTaskInputSchema,
+  CreateTaskInputSchema,
+  ListNotificationTasksInputSchema,
+  NotificationIdInputSchema,
+  type NotificationProcedureContext,
+  requireNotificationDbUser,
+  resolveUserId,
+  sendNotificationEmail,
+  UpdateNotificationTaskStatusInputSchema,
+} from "./notification-procedure-base.js";
+
+export async function listNotificationTasks(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof ListNotificationTasksInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const userFilter = input.includeAssigned
+    ? { OR: [{ userId }, { assigneeId: userId }] }
+    : { userId };
+
+  return ctx.db.notification.findMany({
+    where: {
+      ...userFilter,
+      category: { in: ["TASK", "APPROVAL"] },
+      ...(input.status !== undefined ? { taskStatus: input.status } : {}),
+    },
+    orderBy: [{ priority: "desc" }, { dueDate: "asc" }, { createdAt: "desc" }],
+    take: input.limit,
+  });
+}
+
+export async function getNotificationTaskCounts(ctx: NotificationProcedureContext) {
+  const userId = await resolveUserId(ctx);
+  const now = new Date();
+  const where = {
+    OR: [{ userId }, { assigneeId: userId }],
+    category: { in: ["TASK" as const, "APPROVAL" as const] },
+  };
+
+  const [grouped, overdue] = await Promise.all([
+    ctx.db.notification.groupBy({
+      by: ["taskStatus"],
+      where,
+      _count: true,
+    }),
+    ctx.db.notification.count({
+      where: {
+        ...where,
+        taskStatus: { in: ["OPEN", "IN_PROGRESS"] },
+        dueDate: { lt: now },
+      },
+    }),
+  ]);
+
+  const counts: Record<string, number> = {};
+  for (const group of grouped) {
+    if (group.taskStatus) {
+      counts[group.taskStatus] = group._count;
+    }
+  }
+
+  return {
+    open: counts.OPEN ?? 0,
+    inProgress: counts.IN_PROGRESS ?? 0,
+    done: counts.DONE ?? 0,
+    dismissed: counts.DISMISSED ?? 0,
+    overdue,
+  };
+}
+
+export async function getNotificationTaskDetail(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof NotificationIdInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const task = await ctx.db.notification.findFirst({
+    where: {
+      id: input.id,
+      OR: [{ userId }, { assigneeId: userId }],
+      category: { in: ["TASK", "APPROVAL"] },
+    },
+    select: {
+      id: true,
+      title: true,
+      body: true,
+      type: true,
+      priority: true,
+      category: true,
+      taskStatus: true,
+      taskAction: true,
+      dueDate: true,
+      entityId: true,
+      entityType: true,
+      completedAt: true,
+      completedBy: true,
+      createdAt: true,
+      userId: true,
+      assigneeId: true,
+      sender: { select: { id: true, name: true, email: true } },
+    },
+  });
+
+  if (!task) {
+    throw new TRPCError({
+      code: "NOT_FOUND",
+      message: "Task not found or you do not have permission",
+    });
+  }
+
+  return task;
+}
+
+export async function updateNotificationTaskStatus(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof UpdateNotificationTaskStatusInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const existing = await ctx.db.notification.findFirst({
+    where: {
+      id: input.id,
+      OR: [{ userId }, { assigneeId: userId }],
+    },
+  });
+
+  if (!existing) {
+    throw new TRPCError({
+      code: "NOT_FOUND",
+      message: "Task not found or you do not have permission",
+    });
+  }
+
+  const isCompleting = input.status === "DONE";
+  const updated = await ctx.db.notification.update({
+    where: { id: input.id },
+    data: {
+      taskStatus: input.status,
+      ...(isCompleting ? { completedAt: new Date(), completedBy: userId } : {}),
+    },
+  });
+
+  if (isCompleting) {
+    emitTaskCompleted(existing.userId, updated.id);
+    if (existing.assigneeId && existing.assigneeId !== existing.userId) {
+      emitTaskCompleted(existing.assigneeId, updated.id);
+    }
+  } else {
+    emitTaskStatusChanged(existing.userId, updated.id);
+    if (existing.assigneeId && existing.assigneeId !== existing.userId) {
+      emitTaskStatusChanged(existing.assigneeId, updated.id);
+    }
+  }
+
+  return updated;
+}
+
+export async function executeNotificationTaskAction(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof NotificationIdInputSchema>,
+) {
+  const userId = await resolveUserId(ctx);
+  const task = await ctx.db.notification.findFirst({
+    where: {
+      id: input.id,
+      OR: [{ userId }, { assigneeId: userId }],
+      category: { in: ["TASK", "APPROVAL"] },
+    },
+    select: {
+      id: true,
+      userId: true,
+      assigneeId: true,
+      taskAction: true,
+      taskStatus: true,
+    },
+  });
+
+  if (!task) {
+    throw new TRPCError({
+      code: "NOT_FOUND",
+      message: "Task not found or you do not have permission",
+    });
+  }
+  if (!task.taskAction) {
+    throw new TRPCError({
+      code: "PRECONDITION_FAILED",
+      message: "This task has no executable action",
+    });
+  }
+  if (task.taskStatus === "DONE") {
+    throw new TRPCError({
+      code: "PRECONDITION_FAILED",
+      message: "This task is already completed",
+    });
+  }
+
+  const parsed = parseTaskAction(task.taskAction);
+  if (!parsed) {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: `Invalid taskAction format: ${task.taskAction}`,
+    });
+  }
+
+  const handler = getTaskAction(parsed.action);
+  if (!handler) {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: `Unknown action: ${parsed.action}`,
+    });
+  }
+
+  const currentUser = requireNotificationDbUser(ctx);
+  const permissions = resolvePermissions(
+    currentUser.systemRole as import("@capakraken/shared").SystemRole,
+    currentUser.permissionOverrides as import("@capakraken/shared").PermissionOverrides | null,
+    ctx.roleDefaults ?? undefined,
+  );
+  if (handler.permission && !permissions.has(handler.permission as PermissionKey)) {
+    throw new TRPCError({
+      code: "FORBIDDEN",
+      message: `Permission denied: you need "${handler.permission}" to perform this action`,
+    });
+  }
+
+  const actionResult = await handler.execute(parsed.entityId, ctx.db, userId);
+  if (!actionResult.success) {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: actionResult.message,
+    });
+  }
+
+  const completedTask = await ctx.db.notification.update({
+    where: { id: input.id },
+    data: {
+      taskStatus: "DONE",
+      completedAt: new Date(),
+      completedBy: userId,
+    },
+  });
+
+  emitTaskCompleted(task.userId, task.id);
+  if (task.assigneeId && task.assigneeId !== task.userId) {
+    emitTaskCompleted(task.assigneeId, task.id);
+  }
+
+  return {
+    task: completedTask,
+    actionResult,
+  };
+}
+
+export async function createTask(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof CreateTaskInputSchema>,
+) {
+  const senderId = requireNotificationDbUser(ctx).id;
+  const notificationId = await createNotification({
+    db: ctx.db,
+    userId: input.userId,
+    type: "TASK_CREATED",
+    category: "TASK",
+    taskStatus: "OPEN",
+    title: input.title,
+    priority: input.priority,
+    senderId,
+    channel: input.channel,
+    body: input.body,
+    dueDate: input.dueDate,
+    taskAction: input.taskAction,
+    entityId: input.entityId,
+    entityType: input.entityType,
+    link: input.link,
+  });
+
+  emitTaskAssigned(input.userId, notificationId);
+
+  if (input.channel === "email" || input.channel === "both") {
+    void sendNotificationEmail(ctx.db, input.userId, input.title, input.body);
+  }
+
+  return ctx.db.notification.findUnique({ where: { id: notificationId } });
+}
+
+export async function assignTask(
+  ctx: NotificationProcedureContext,
+  input: z.infer<typeof AssignTaskInputSchema>,
+) {
+  const existing = await findUniqueOrThrow(
+    ctx.db.notification.findUnique({ where: { id: input.id } }),
+    "Task",
+  );
+
+  if (existing.category !== "TASK" && existing.category !== "APPROVAL") {
+    throw new TRPCError({
+      code: "BAD_REQUEST",
+      message: "Only tasks and approvals can be assigned",
+    });
+  }
+
+  const updated = await ctx.db.notification.update({
+    where: { id: input.id },
+    data: { assigneeId: input.assigneeId },
+  });
+
+  emitTaskAssigned(input.assigneeId, updated.id);
+  return updated;
+}