refactor: drop dead code left over from Cloudflare era

- Remove vietnamese-number.js + test: build-time Python script
  (generate-audio.py) is the sole spec for pre-baked MP3s; runtime
  no longer reads the JS module.
- Remove resetMaster() export: only ever called from tests; inline
  the two-line body at test sites.
- Update Python docstring to drop the JS-mirror reference.
- Rewrite stale "CF Pages root" comment in svelte.config.js.

web/scripts/generate-audio.py

@@ -23,7 +23,7 @@ ONES = [
 
 
 def number_to_vietnamese(n: int) -> str:
-    """Mirror of src/lib/vietnamese-number.js for build-time use."""
+    """Canonical Vietnamese number speller for build-time audio generation."""
     if n < 10:
         return ONES[n]
     if n == 10:

web/src/lib/master-store.svelte.js

@@ -91,8 +91,3 @@ export function drawNext() {
   return next;
 }
 
-/** Wipe everything — used by tests and when leaving a game permanently. */
-export function resetMaster() {
-  masterState.called = [];
-  masterState.remaining = [];
-}

web/src/lib/master-store.test.js

@@ -5,14 +5,14 @@ import {
   drawNext,
   loadMaster,
   masterState,
-  resetMaster,
   saveMaster,
   startNewGame,
 } from "./master-store.svelte.js";
 
 beforeEach(() => {
   localStorage.clear();
-  resetMaster();
+  masterState.called = [];
+  masterState.remaining = [];
 });
 
 describe("master-store", () => {
@@ -48,14 +48,6 @@ describe("master-store", () => {
     expect(masterState.remaining).toEqual([]);
   });
 
-  it("resetMaster clears both arrays", () => {
-    startNewGame();
-    drawNext();
-    resetMaster();
-    expect(masterState.called).toEqual([]);
-    expect(masterState.remaining).toEqual([]);
-  });
-
   it("save + load round-trip preserves state", () => {
     startNewGame();
     drawNext();
@@ -63,7 +55,8 @@ describe("master-store", () => {
     const calledBefore = [...masterState.called];
     const remainingBefore = [...masterState.remaining];
     saveMaster();
-    resetMaster();
+    masterState.called = [];
+    masterState.remaining = [];
     expect(masterState.called).toEqual([]);
     loadMaster();
     expect(masterState.called).toEqual(calledBefore);

web/src/lib/vietnamese-number.js

@@ -1,42 +0,0 @@
-/**
- * Vietnamese number-words for lô tô calls. Pure, no DOM, no I/O.
- * @module lib/vietnamese-number
- */
-
-const ONES = [
-  "không",
-  "một",
-  "hai",
-  "ba",
-  "bốn",
-  "năm",
-  "sáu",
-  "bảy",
-  "tám",
-  "chín",
-];
-
-/**
- * Convert an integer 0..90 to its spoken Vietnamese form, honoring the
- * tonal exceptions that show up in lô tô (15 = "mười lăm", 21 = "hai mươi
- * mốt", 25 = "hai mươi lăm", etc.). Out-of-range values fall back to a
- * plain `String(n)` so the caller never has to guard against undefined.
- * @param {number} n
- * @returns {string}
- */
-export function numberToVietnamese(n) {
-  if (!Number.isInteger(n) || n < 0 || n > 90) return String(n);
-  if (n < 10) return ONES[n];
-  if (n === 10) return "mười";
-  if (n < 20) {
-    const u = n - 10;
-    return u === 5 ? "mười lăm" : `mười ${ONES[u]}`;
-  }
-  const t = Math.floor(n / 10);
-  const u = n % 10;
-  const tens = `${ONES[t]} mươi`;
-  if (u === 0) return tens;
-  if (u === 1) return `${tens} mốt`;
-  if (u === 5) return `${tens} lăm`;
-  return `${tens} ${ONES[u]}`;
-}

web/src/lib/vietnamese-number.test.js

@@ -1,70 +0,0 @@
-import { describe, expect, it } from "vitest";
-import { numberToVietnamese } from "./vietnamese-number.js";
-
-describe("numberToVietnamese — units 0..9", () => {
-  it.each([
-    [0, "không"],
-    [1, "một"],
-    [2, "hai"],
-    [3, "ba"],
-    [4, "bốn"],
-    [5, "năm"],
-    [6, "sáu"],
-    [7, "bảy"],
-    [8, "tám"],
-    [9, "chín"],
-  ])("%i → %s", (n, expected) => {
-    expect(numberToVietnamese(n)).toBe(expected);
-  });
-});
-
-describe("numberToVietnamese — teens 10..19 (mười …, with mười lăm exception)", () => {
-  it.each([
-    [10, "mười"],
-    [11, "mười một"],
-    [12, "mười hai"],
-    [13, "mười ba"],
-    [14, "mười bốn"],
-    [15, "mười lăm"],
-    [16, "mười sáu"],
-    [17, "mười bảy"],
-    [18, "mười tám"],
-    [19, "mười chín"],
-  ])("%i → %s", (n, expected) => {
-    expect(numberToVietnamese(n)).toBe(expected);
-  });
-});
-
-describe("numberToVietnamese — 20..90 (mốt and lăm exceptions, ten-only forms)", () => {
-  it.each([
-    [20, "hai mươi"],
-    [21, "hai mươi mốt"],
-    [22, "hai mươi hai"],
-    [25, "hai mươi lăm"],
-    [29, "hai mươi chín"],
-    [30, "ba mươi"],
-    [31, "ba mươi mốt"],
-    [40, "bốn mươi"],
-    [45, "bốn mươi lăm"],
-    [55, "năm mươi lăm"],
-    [61, "sáu mươi mốt"],
-    [70, "bảy mươi"],
-    [81, "tám mươi mốt"],
-    [85, "tám mươi lăm"],
-    [90, "chín mươi"],
-  ])("%i → %s", (n, expected) => {
-    expect(numberToVietnamese(n)).toBe(expected);
-  });
-});
-
-describe("numberToVietnamese — out of range falls back to String(n)", () => {
-  it.each([
-    [-1, "-1"],
-    [91, "91"],
-    [100, "100"],
-    [0.5, "0.5"],
-    [Number.NaN, "NaN"],
-  ])("%p → %p", (n, expected) => {
-    expect(numberToVietnamese(/** @type {number} */ (n))).toBe(expected);
-  });
-});

web/svelte.config.js

@@ -13,7 +13,7 @@ const env = loadEnv(process.env.NODE_ENV ?? "development", process.cwd(), "");
 //   1. NEXT_BASE_PATH — explicit override (escape hatch)
 //   2. codeserver dev → /absproxy/{port}
 //   3. BUILD_PROFILE=gh → /loto
-//   4. default (CF Pages root, local dev) → ""
+//   4. default (local dev / generic static host) → ""
 function resolveBase() {
   if (process.env.NEXT_BASE_PATH != null) return process.env.NEXT_BASE_PATH;
   if (isCodeserver) {