fix context sentences in YAML to ensure vocab emphasis

docs/.vitepress/theme/components/VocabQuiz.vue

@@ -146,7 +146,7 @@ import {
 import yaml from "yaml";
 import SentenceAudio from "./SentenceAudio.vue";
 import { supabase } from "../supabase.ts";
-import { IVoc, Voc } from "../types.ts";
+import { fmValueParser, IVoc, Voc } from "../types.ts";
 import { LLMstream } from "../llm.ts";
 import MarkdownIt from "markdown-it";
 
@@ -263,7 +263,7 @@ watch(sent_ko, () => {
 const vocabulary: Record<string, IVoc[]> = {};
 
 for (const [k, vs] of Object.entries(
-  frontmatter.value[fmKey] as Record<string, IVoc[]>,
+  fmValueParser.parse(frontmatter.value[fmKey]),
 )) {
   vocabulary[k] = [...(vocabulary[k] || []), ...vs];
 

docs/.vitepress/theme/types.ts

@@ -1,17 +1,40 @@
 import * as z from "zod";
 
-export const Voc = z.object({
-  ko: z.string(),
-  ko_text: z.string().optional(),
-  audio: z.string().optional(),
-  en: z.string(),
-  get usage() {
-    return z.array(Voc).optional();
-  },
-  notes: z.union([z.string(), z.array(z.string())]).optional(),
-  get examples() {
-    return z.array(Voc).optional();
-  },
-});
+// 1. Define the interface manually (do not use z.infer here)
+export interface IVoc {
+  ko: string;
+  ko_text?: string;
+  audio?: string;
+  en: string;
+  usage?: IVoc[];
+  notes?: string | string[];
+  examples?: IVoc[];
+}
 
-export type IVoc = z.infer<typeof Voc>;
+// 2. Annotate the schema with the manually defined interface
+export const Voc: z.ZodType<IVoc> = z.lazy(() =>
+  z.object({
+    ko: z.string(),
+    ko_text: z.string().optional(),
+    audio: z.string().optional(),
+    en: z.string(),
+    usage: z.array(Voc).optional(),
+    notes: z.union([z.string(), z.array(z.string())]).optional(),
+    examples: z
+      .array(Voc)
+      .superRefine((val, ctx) => {
+        for (const x of val) {
+          if (!isEmp(x.ko)) {
+            ctx.addIssue(`${JSON.stringify(x)} must contain **emp** text`);
+          }
+        }
+      })
+      .optional(),
+  }),
+);
+
+export const fmValueParser = z.record(z.string(), z.array(Voc));
+
+function isEmp(s: string) {
+  return /\*\*.+\*\*/.test(s);
+}