feat(bookings): add internal remark field to bookings

Add a remark column to the bookings table for management-only notes.
Include UI to view and edit remarks directly from the bookings list.
Create API endpoint and database queries to support remark updates.

server/utils/booking-repository.ts

@@ -47,6 +47,7 @@ type DbBookingRow = {
   person_in_charge_id: string
   person_in_charge_name: string | null
   person_in_charge_phone_number: string | null
+  remark?: string | null
   status: BookingStatus | string
   status_label: string | null
   created_at: Date | string
@@ -139,6 +140,7 @@ function bookingSelectColumns(sql: any) {
     bookings.person_in_charge_id,
     coalesce(users.full_name, bookings.person_in_charge_name) as person_in_charge_name,
     coalesce(users.phone_number, bookings.person_in_charge_phone_number) as person_in_charge_phone_number,
+    bookings.remark,
     bookings.status,
     booking_statuses.label as status_label,
     bookings.created_at,
@@ -231,6 +233,7 @@ function mapBooking(row: DbBookingRow): PublicBooking {
     personInChargeId: row.person_in_charge_id,
     personInChargeName: row.person_in_charge_name || '',
     personInChargePhoneNumber: row.person_in_charge_phone_number || '',
+    remark: row.remark || null,
     status,
     statusLabel: row.status_label || getBookingStatusLabel(status),
     createdAt: toIsoString(row.created_at) ?? new Date().toISOString(),
@@ -493,6 +496,7 @@ export async function createBooking(input: {
         unit_price,
         total_price,
         person_in_charge_id,
+        remark,
         status
       )
       values (
@@ -511,6 +515,7 @@ export async function createBooking(input: {
         ${input.unitPrice},
         ${input.totalPrice},
         ${input.personInChargeId},
+        null,
         'pending'
       )
       returning *
@@ -588,6 +593,50 @@ export async function listBookings(options?: {
   return rows.map(mapBooking)
 }
 
+export async function updateBookingRemark(input: {
+  bookingId: string
+  personInChargeId?: string
+  remark: string | null
+}): Promise<PublicBooking | null> {
+  await ensureDatabaseReady()
+  const sql = getSqlClient()
+
+  const rows = input.personInChargeId
+    ? await sql<DbBookingRow[]>`
+      with updated_booking as (
+        update bookings
+        set
+          remark = ${input.remark},
+          updated_at = now()
+        where id = ${input.bookingId}
+          and person_in_charge_id = ${input.personInChargeId}
+        returning *
+      )
+      select ${bookingSelectColumns(sql)}
+      from updated_booking as bookings
+      ${bookingJoins(sql)}
+      where dinner_events.is_active = true
+      limit 1
+    `
+    : await sql<DbBookingRow[]>`
+      with updated_booking as (
+        update bookings
+        set
+          remark = ${input.remark},
+          updated_at = now()
+        where id = ${input.bookingId}
+        returning *
+      )
+      select ${bookingSelectColumns(sql)}
+      from updated_booking as bookings
+      ${bookingJoins(sql)}
+      where dinner_events.is_active = true
+      limit 1
+    `
+
+  return rows[0] ? mapBooking(rows[0]) : null
+}
+
 export async function listBookingSeats(bookingId: string): Promise<PublicBookingSeat[]> {
   await ensureDatabaseReady()
   const sql = getSqlClient()