Port the introduction's naming and clock screens

A new game now runs NewGame's InitGender and OakSpeech natively before
the bedroom: Boy or Girl, InitClock's hour and minute steppers with
their YES/NO confirmations, Oak's speech with Wooper, and NamePlayer's
preset names or naming field (a blank name takes CHRIS or KRIS). Texts,
menus and time strings come from a new INTRO profile table verified by
check:reference; Oak's and the player's pictures decode from
TrainerPicPointers, ChrisPic/KrisPic and TrainerPalettes.

The chosen time is kept as a minute offset from the device clock, which
time of day, the weekday, NPC hours and the daily reset now read. The
intro runs only when nothing is saved; a save made during it starts it
again. Saves gain intro and clock.minuteOffset, migrated by absence. The
shell's name and character fields are gone. Intentional change: the
steppers start at the device time rather than 10:00.

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

tests/mart-browser.spec.ts

@@ -13,7 +13,9 @@ async function start(page: Page) {
     const source = await response.text();
     const needle = "const world = new GameWorld(assets);";
     expect(source).toContain(needle);
-    await route.fulfill({ response, body: source.replace(needle,
+    // Fixture worlds stand in for a saved session, so no introduction runs.
+    expect(source).toContain("this.world?.beginIntro();");
+    await route.fulfill({ response, body: source.replace("this.world?.beginIntro();", "").replace(needle,
       `const { martFixtureWorld } = await import('/tests/mart-fixture.ts');
        const world = martFixtureWorld(assets);`) });
   });