Refactor PK page and add Trellis setup

app/pk/constants.ts

@@ -0,0 +1,16 @@
+import type { AppSettings, Grade } from "./types";
+
+export const grades: Grade[] = ["小班", "中班", "大班"];
+
+export const pkPageCursorClass = "cursor-hammer";
+
+export const defaultSettings: AppSettings = {
+  ttsVoice: "en-US-EmmaMultilingualNeural",
+  ttsRate: "-10%",
+  scorePerCorrect: 10,
+  scorePerWrong: 0,
+  autoSpeak: true,
+  wordDisplayMode: "uppercase",
+  pkWordCount: 0,
+  pkOptionCount: 4,
+};