Implement activity log (task 22)

- activity_log table in _core/schema.ts with household+created_at index;
  migration 0008_activity_log.sql applied
- logActivity() in _core/activity.ts reads current session and inserts a row
- ActivityLogEntry type + renderActivity?(entry): string added to
  EntityTypeRegistration so modules declare human-readable labels without
  any if/else branches in the widget
- core.activity widget replaced with a real async server component that
  queries the last 20 rows and renders via the registry
- logActivity wired into every create/update/delete in calendar, lists,
  and notes server actions; getAuthorizedItem also returns text so
  toggle/delete can include item text in the payload
- pnpm typecheck, lint, build, and all 4 E2E specs pass

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/modules/lists/server/actions.ts

@@ -5,6 +5,7 @@ import { revalidatePath } from "next/cache";
 import { z } from "zod";
 import { db } from "@/lib/db";
 import { getCurrentSession } from "@/lib/session";
+import { logActivity } from "@/modules/_core/activity";
 import { listItems, lists } from "../schema";
 import { getOrCreateDefaultList } from "./defaults";
 import { canAccessList, getList } from "./queries";
@@ -46,6 +47,7 @@ export async function createList(input: z.input<typeof listInput>) {
     .returning();
 
   if (!list) throw new Error("List was not created");
+  await logActivity({ entityType: "lists.list", entityId: list.id, action: "create", payload: { name: list.name } });
   revalidatePath("/lists");
   return list;
 }
@@ -55,6 +57,7 @@ export async function renameList(input: { id: string; name: string }) {
   const { household } = await getCurrentSession();
   await assertCanAccessList(parsed.id, household.id);
   await db.update(lists).set({ name: parsed.name }).where(eq(lists.id, parsed.id));
+  await logActivity({ entityType: "lists.list", entityId: parsed.id, action: "update", payload: { name: parsed.name } });
   revalidatePath("/lists");
   revalidatePath(`/lists/${parsed.id}`);
   await notifyListChanged(parsed.id);
@@ -65,6 +68,7 @@ export async function archiveList(input: { id: string }) {
   const { household } = await getCurrentSession();
   await assertCanAccessList(parsed.id, household.id);
   await db.update(lists).set({ archived: true }).where(eq(lists.id, parsed.id));
+  await logActivity({ entityType: "lists.list", entityId: parsed.id, action: "archive" });
   revalidatePath("/lists");
   revalidatePath(`/lists/${parsed.id}`);
   await notifyListChanged(parsed.id);
@@ -94,6 +98,7 @@ export async function addItem(input: z.input<typeof itemInput>) {
     .returning();
 
   if (!item) throw new Error("List item was not created");
+  await logActivity({ entityType: "lists.item", entityId: item.id, action: "create", payload: { text: item.text } });
   revalidatePath(`/lists/${parsed.listId}`);
   await notifyListChanged(parsed.listId);
   return getList(parsed.listId);
@@ -122,6 +127,7 @@ export async function toggleItem(input: { id: string; done?: boolean }) {
     .set({ done, updatedAt: new Date() })
     .where(eq(listItems.id, parsed.id));
 
+  await logActivity({ entityType: "lists.item", entityId: parsed.id, action: "toggle", payload: { done, text: existing.text } });
   revalidatePath(`/lists/${existing.listId}`);
   await notifyListChanged(existing.listId);
   return getList(existing.listId);
@@ -144,6 +150,7 @@ export async function updateItem(input: z.input<typeof updateItemInput>) {
     })
     .where(eq(listItems.id, parsed.id));
 
+  await logActivity({ entityType: "lists.item", entityId: parsed.id, action: "update", payload: { text: parsed.text ?? existing.text } });
   revalidatePath(`/lists/${existing.listId}`);
   await notifyListChanged(existing.listId);
   return getList(existing.listId);
@@ -153,6 +160,7 @@ export async function deleteItem(input: { id: string }) {
   const parsed = z.object({ id: z.string().uuid() }).parse(input);
   const { household } = await getCurrentSession();
   const existing = await getAuthorizedItem(parsed.id, household.id);
+  await logActivity({ entityType: "lists.item", entityId: parsed.id, action: "delete", payload: { text: existing.text } });
   await db.delete(listItems).where(eq(listItems.id, parsed.id));
   revalidatePath(`/lists/${existing.listId}`);
   await notifyListChanged(existing.listId);
@@ -190,6 +198,7 @@ async function getAuthorizedItem(itemId: string, householdId: string) {
       id: listItems.id,
       listId: listItems.listId,
       done: listItems.done,
+      text: listItems.text,
     })
     .from(listItems)
     .innerJoin(lists, eq(listItems.listId, lists.id))