fix: restore complete admin feature dependencies

src/actions/watch.ts

@@ -0,0 +1,44 @@
+'use server'
+
+import { revalidateTag } from 'next/cache'
+import { z } from 'zod'
+import { PERMS } from '@/lib/permission-slugs'
+import { prisma } from '@/lib/prisma'
+import { adminAction } from '@/lib/safe-action'
+import { actionOk } from '@/lib/safe-action-shared'
+
+const toggleWatchSchema = z.object({
+  targetUserId: z.coerce.number().int().positive(),
+  reason: z.string().max(255).optional(),
+})
+
+/**
+ * Toggle a watch entry for the calling staff on the given target user.
+ * If a row already exists it's removed; otherwise it's created with the
+ * provided reason (defaulting to empty). Returns the resulting state so
+ * the UI can flip the badge without re-fetching.
+ */
+export const toggleUserWatch = adminAction(
+  { permission: PERMS.USERS_VIEW, schema: toggleWatchSchema },
+  async (ctx) => {
+    const staffId = ctx.session.user.id
+    const { targetUserId, reason } = ctx.data
+
+    const existing = await prisma.userWatch.findUnique({
+      where: { staffId_targetUserId: { staffId, targetUserId } },
+    })
+
+    if (existing) {
+      await prisma.userWatch.delete({ where: { id: existing.id } })
+      revalidateTag(`user-watch:${staffId}`, { expire: 0 })
+      return actionOk({ watching: false })
+    }
+
+    await prisma.userWatch.create({
+      data: { staffId, targetUserId, reason: reason ?? '' },
+    })
+    revalidateTag(`user-watch:${staffId}`, { expire: 0 })
+    return actionOk({ watching: true })
+  },
+)
+