feat: the redesigned Event Clock

The new reader app replaces the old UI: Checklist with a rail (focus
pills, Next to expire, today's dailies, pinned routines), Timeline in a
new and a classic look, Routines, Archive and a Settings area, in a
Structured (default) and a Relaxed interface. It follows the approved
Round 6 B and Round 7 mockups, corrected screen by screen with the owner.

Reader data moves to a v2 store (gacha-tracker:v2:*). Existing v1 data
is migrated on first load, a recovery copy is written first, and the v1
keys are never removed, so a rollback finds them unchanged. Redeem codes
for Genshin arrive as their own feed.

Also: live's urgency ramp, editable per theme; completion and
section-complete fireworks; a returning-user tour; the design mockups,
specs, plans, reviews and handoff record.

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

test/display-time.test.ts

@@ -0,0 +1,31 @@
+import { expect, test } from "bun:test";
+import { formatInZone } from "../src/client/state/displayTime.ts";
+test("named timezones use their daylight-saving rules and invalid zones fall back", () => {
+  const winter = formatInZone(
+    "2026-01-01T12:00:00Z",
+    true,
+    "Europe/Copenhagen",
+  );
+  const summer = formatInZone(
+    "2026-07-01T12:00:00Z",
+    true,
+    "Europe/Copenhagen",
+  );
+  expect(winter).toContain("13:00");
+  expect(summer).toContain("14:00");
+  expect(() =>
+    formatInZone("2026-07-01T12:00:00Z", true, "invalid"),
+  ).not.toThrow();
+});
+import { readerInstant } from "../src/client/state/useCustom.ts";
+test("custom event entry resolves a chosen zone and rejects nonexistent daylight-saving times", () => {
+  expect(
+    readerInstant("2026-07-01", "12:00", "start", "Europe/Copenhagen"),
+  ).toBe("2026-07-01T10:00:00.000Z");
+  expect(
+    readerInstant("2026-03-29", "02:30", "start", "Europe/Copenhagen"),
+  ).toBeNull();
+  expect(
+    readerInstant("2026-02-30", "12:00", "start", "Europe/Copenhagen"),
+  ).toBeNull();
+});