Revert "Merge pull request 'Complete Housekeeping migration and /ase cutover' (#52) from codex/housekeeping-complete into main"

This reverts commit 488b6e57c4, reversing
changes made to b506b4499a.

src/actions/watch.ts

@@ -0,0 +1,53 @@
+"use server";
+
+import { and, eq } from "drizzle-orm";
+import { revalidateTag } from "next/cache";
+import { z } from "zod";
+import { db, UserWatch } from "@/lib/db";
+import { PERMS } from "@/lib/permission-slugs";
+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 db
+			.select({ id: UserWatch.id })
+			.from(UserWatch)
+			.where(
+				and(
+					eq(UserWatch.staffId, staffId),
+					eq(UserWatch.targetUserId, targetUserId),
+				),
+			)
+			.limit(1);
+
+		if (existing) {
+			await db.delete(UserWatch).where(eq(UserWatch.id, existing.id));
+			revalidateTag(`user-watch:${staffId}`, { expire: 0 });
+			return actionOk({ watching: false });
+		}
+
+		await db.insert(UserWatch).values({
+			staffId,
+			targetUserId,
+			reason: reason ?? "",
+		});
+		revalidateTag(`user-watch:${staffId}`, { expire: 0 });
+		return actionOk({ watching: true });
+	},
+);