feat: p2 batch 28-31 reminders lists comments bang stats

Calendar events support multiple reminder offsets with presets and per-user defaults.

Lists index adds inline task entry and list property editing.

Generic entity comments on list detail. New bangs.stats dashboard widget.

Closes Gitea #28, #29, #30, #31. Migrations 0022 and 0023.

src/app/settings/reminder-actions.ts

@@ -0,0 +1,21 @@
+"use server";
+
+import { eq } from "drizzle-orm";
+import { revalidatePath } from "next/cache";
+import { z } from "zod";
+import { db } from "@/lib/db";
+import { getCurrentSession } from "@/lib/session";
+import { normalizeReminderOffsets } from "@/lib/reminder-offsets";
+import { users } from "@/modules/_core/schema";
+
+const offsetsSchema = z.array(z.number().int().min(0)).max(20);
+
+export async function setDefaultEventReminderOffsets(offsets: number[]) {
+  const { user } = await getCurrentSession();
+  const parsed = normalizeReminderOffsets(offsetsSchema.parse(offsets));
+
+  await db.update(users).set({ defaultEventReminderOffsets: parsed }).where(eq(users.id, user.id));
+
+  revalidatePath("/calendar");
+  revalidatePath("/settings");
+}