Add the Recent updates sheet behind the Home bell (Feature 21)

GET /api/v1/updates lists the last 10 distinct notification events from
the outbox, newest first and one per event key whatever its channels.
POST /api/v1/updates/seen {"through": created_at} moves
household_settings.updates_seen_at forward, so /api/v1/home's
recentUpdates.unread is true only for an event stored since. The Home
bell opens a Sheet listing the updates with relative times; a row opens
its URL, and opening the sheet marks the updates seen, clearing the
grape dot optimistically and putting it back if the mark fails.

Maestro task 96e2dc3f-1f8a-4114-bcb5-e0f93c349165.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/server/home_test.go

@@ -1,13 +1,18 @@
 package server
 
 import (
+	"database/sql"
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
+	"strings"
 	"testing"
 	"time"
 
+	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/db"
 	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/household"
+	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/notify"
+	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/store"
 )
 
 // GET /home answers the Home screen in its JSON shape; newTestHome's
@@ -67,3 +72,173 @@ func TestGetHomeNeedsSession(t *testing.T) {
 		t.Errorf("GET /api/v1/home without a session = %d, want 401", rec.Code)
 	}
 }
+
+// homeRouter returns a router whose Home reads st, and st.
+func homeRouter(t *testing.T) (http.Handler, *store.Store) {
+	t.Helper()
+	st := newTestStore(t)
+	svc := newTestHomeOn(t, st)
+	return newTestRouterWithHome(t, "dev", newTestSettings(t), newTestRunner(t), svc), st
+}
+
+// storeEvent stores event key in st's outbox at instant at for each of
+// channels, as notify stores an event, and returns at as stored.
+func storeEvent(t *testing.T, st *store.Store, typ notify.EventType, key, title string, at time.Time, channels ...notify.Channel) string {
+	t.Helper()
+	payload, err := json.Marshal(notify.Payload{Event: typ, Title: title, Body: "Body of " + key, URL: "/plan", Tag: key})
+	if err != nil {
+		t.Fatal(err)
+	}
+	ts := store.Timestamp{Time: at.UTC().Truncate(time.Millisecond)}.String()
+	for _, ch := range channels {
+		if _, err := db.New(st.Writer).InsertNotification(t.Context(), db.InsertNotificationParams{
+			ID: store.NewID(), EventKey: key, Channel: string(ch), Payload: string(payload),
+			NextAttemptAt: sql.NullString{String: ts, Valid: true}, Now: ts,
+		}); err != nil {
+			t.Fatal(err)
+		}
+	}
+	return ts
+}
+
+// unread reads recentUpdates.unread from GET /home.
+func unread(t *testing.T, h http.Handler) bool {
+	t.Helper()
+	rec, body := serve(t, h, signedIn(http.MethodGet, "/api/v1/home", nil))
+	if rec.Code != http.StatusOK {
+		t.Fatalf("GET /api/v1/home = %d: %s", rec.Code, rec.Body)
+	}
+	updates, ok := body["recentUpdates"].(map[string]any)
+	if !ok {
+		t.Fatalf("GET /api/v1/home has no recentUpdates: %s", rec.Body)
+	}
+	return updates["unread"] == true
+}
+
+// markSeen posts body to /updates/seen and returns the answer.
+func markSeen(t *testing.T, h http.Handler, body string) *httptest.ResponseRecorder {
+	t.Helper()
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, signedIn(http.MethodPost, "/api/v1/updates/seen", strings.NewReader(body)))
+	return rec
+}
+
+// GET /updates lists the last distinct events newest first, one per event
+// whatever its channels, in their JSON shape.
+func TestGetUpdates(t *testing.T) {
+	t.Parallel()
+	h, st := homeRouter(t)
+
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, signedIn(http.MethodGet, "/api/v1/updates", nil))
+	if rec.Code != http.StatusOK || rec.Body.String() != `{"updates":[]}` {
+		t.Errorf("GET /api/v1/updates with none = %d %s, want 200 {\"updates\":[]}", rec.Code, rec.Body)
+	}
+
+	now := time.Now()
+	older := storeEvent(t, st, notify.NewSuggestions, "new_suggestions:1", "New Side quests", now.Add(-2*time.Minute), notify.ChannelPush)
+	newer := storeEvent(t, st, notify.PlanReady, "plan_ready:2026-10-12", "Your week is drafted", now.Add(-time.Minute), notify.ChannelPush, notify.ChannelChat)
+
+	rec = httptest.NewRecorder()
+	h.ServeHTTP(rec, signedIn(http.MethodGet, "/api/v1/updates", nil))
+	want := `{"updates":[` +
+		`{"type":"plan_ready","title":"Your week is drafted","body":"Body of plan_ready:2026-10-12","url":"/plan","created_at":"` + newer + `"},` +
+		`{"type":"new_suggestions","title":"New Side quests","body":"Body of new_suggestions:1","url":"/plan","created_at":"` + older + `"}]}`
+	if rec.Code != http.StatusOK || rec.Body.String() != want {
+		t.Errorf("GET /api/v1/updates = %d %s, want 200 %s", rec.Code, rec.Body, want)
+	}
+}
+
+// Unread is true while an event newer than the last seen one exists,
+// clears once POST /updates/seen marks the newest seen, and returns when a
+// newer event is stored; marking an older one seen again moves nothing.
+func TestUpdatesSeen(t *testing.T) {
+	t.Parallel()
+	h, st := homeRouter(t)
+	now := time.Now()
+
+	if unread(t, h) {
+		t.Error("unread with no events")
+	}
+	first := storeEvent(t, st, notify.PlanReady, "plan_ready:1", "Drafted", now.Add(-2*time.Minute), notify.ChannelPush, notify.ChannelChat)
+	if !unread(t, h) {
+		t.Error("not unread with an event never seen")
+	}
+	if rec := markSeen(t, h, `{"through":"`+first+`"}`); rec.Code != http.StatusNoContent || rec.Body.Len() != 0 {
+		t.Fatalf("POST /api/v1/updates/seen = %d %s, want 204", rec.Code, rec.Body)
+	}
+	if unread(t, h) {
+		t.Error("unread after the newest event was marked seen")
+	}
+
+	second := storeEvent(t, st, notify.ListReady, "list_ready:2", "Supply run ready", now.Add(-time.Minute), notify.ChannelPush)
+	if !unread(t, h) {
+		t.Error("not unread with an event newer than the last seen")
+	}
+	// Already seen: marking the older event seen again is accepted and
+	// changes nothing.
+	if rec := markSeen(t, h, `{"through":"`+first+`"}`); rec.Code != http.StatusNoContent {
+		t.Fatalf("POST /api/v1/updates/seen of an older event = %d %s, want 204", rec.Code, rec.Body)
+	}
+	if !unread(t, h) {
+		t.Error("marking an older event seen hid a newer one")
+	}
+	if rec := markSeen(t, h, `{"through":"`+second+`"}`); rec.Code != http.StatusNoContent {
+		t.Fatalf("POST /api/v1/updates/seen = %d %s, want 204", rec.Code, rec.Body)
+	}
+	if unread(t, h) {
+		t.Error("unread after the newer event was marked seen")
+	}
+}
+
+// A malformed POST /updates/seen is 400 and records nothing.
+func TestUpdatesSeenRejectsMalformed(t *testing.T) {
+	t.Parallel()
+	h, st := homeRouter(t)
+	storeEvent(t, st, notify.PlanReady, "plan_ready:1", "Drafted", time.Now().Add(-time.Minute), notify.ChannelPush)
+
+	for _, body := range []string{
+		``,
+		`[]`,
+		`{}`,
+		`{"through":null}`,
+		`{"through":42}`,
+		`{"through":"yesterday"}`,
+		`{"through":"2026-10-13 12:00:00"}`,
+		`{"through":"2026-10-13T12:00:00.000Z","extra":true}`,
+		`{"through":"2026-10-13T12:00:00.000Z"} {}`,
+		`{"through":"` + time.Now().Add(time.Hour).UTC().Format(time.RFC3339Nano) + `"}`,
+	} {
+		rec := markSeen(t, h, body)
+		if rec.Code != http.StatusBadRequest || !strings.Contains(rec.Body.String(), `"invalid_request"`) {
+			t.Errorf("POST /api/v1/updates/seen %q = %d %s, want 400 invalid_request", body, rec.Code, rec.Body)
+		}
+	}
+	if !unread(t, h) {
+		t.Error("a malformed POST /updates/seen marked updates seen")
+	}
+}
+
+// Both endpoints need a session, and POST /updates/seen the CSRF token.
+func TestUpdatesNeedSessionAndCSRF(t *testing.T) {
+	t.Parallel()
+	h, _ := homeRouter(t)
+	body := `{"through":"2026-10-01T12:00:00.000Z"}`
+	for _, req := range []*http.Request{
+		httptest.NewRequest(http.MethodGet, "/api/v1/updates", nil),
+		httptest.NewRequest(http.MethodPost, "/api/v1/updates/seen", strings.NewReader(body)),
+	} {
+		rec := httptest.NewRecorder()
+		h.ServeHTTP(rec, req)
+		if rec.Code != http.StatusUnauthorized {
+			t.Errorf("%s %s without a session = %d, want 401", req.Method, req.URL.Path, rec.Code)
+		}
+	}
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/updates/seen", strings.NewReader(body))
+	req.AddCookie(validSessionCookie)
+	rec := httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != http.StatusForbidden {
+		t.Errorf("POST /api/v1/updates/seen without the CSRF token = %d, want 403", rec.Code)
+	}
+}