chore: Enable "curly" rule to avoid single-statement if confusion/errors.

src/markdown/frontmatter.ts

@@ -13,9 +13,15 @@ function stripQuotes(value: string): string {
 }
 
 function coerceFrontmatterValue(value: unknown): string | undefined {
-  if (value === null || value === undefined) return undefined;
-  if (typeof value === "string") return value.trim();
-  if (typeof value === "number" || typeof value === "boolean") return String(value);
+  if (value === null || value === undefined) {
+    return undefined;
+  }
+  if (typeof value === "string") {
+    return value.trim();
+  }
+  if (typeof value === "number" || typeof value === "boolean") {
+    return String(value);
+  }
   if (typeof value === "object") {
     try {
       return JSON.stringify(value);
@@ -29,13 +35,19 @@ function coerceFrontmatterValue(value: unknown): string | undefined {
 function parseYamlFrontmatter(block: string): ParsedFrontmatter | null {
   try {
     const parsed = YAML.parse(block) as unknown;
-    if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) return null;
+    if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) {
+      return null;
+    }
     const result: ParsedFrontmatter = {};
     for (const [rawKey, value] of Object.entries(parsed as Record<string, unknown>)) {
       const key = rawKey.trim();
-      if (!key) continue;
+      if (!key) {
+        continue;
+      }
       const coerced = coerceFrontmatterValue(value);
-      if (coerced === undefined) continue;
+      if (coerced === undefined) {
+        continue;
+      }
       result[key] = coerced;
     }
     return result;
@@ -50,7 +62,9 @@ function extractMultiLineValue(
 ): { value: string; linesConsumed: number } {
   const startLine = lines[startIndex];
   const match = startLine.match(/^([\w-]+):\s*(.*)$/);
-  if (!match) return { value: "", linesConsumed: 1 };
+  if (!match) {
+    return { value: "", linesConsumed: 1 };
+  }
 
   const inlineValue = match[2].trim();
   if (inlineValue) {
@@ -118,14 +132,20 @@ function parseLineFrontmatter(block: string): ParsedFrontmatter {
 
 export function parseFrontmatterBlock(content: string): ParsedFrontmatter {
   const normalized = content.replace(/\r\n/g, "\n").replace(/\r/g, "\n");
-  if (!normalized.startsWith("---")) return {};
+  if (!normalized.startsWith("---")) {
+    return {};
+  }
   const endIndex = normalized.indexOf("\n---", 3);
-  if (endIndex === -1) return {};
+  if (endIndex === -1) {
+    return {};
+  }
   const block = normalized.slice(4, endIndex);
 
   const lineParsed = parseLineFrontmatter(block);
   const yamlParsed = parseYamlFrontmatter(block);
-  if (yamlParsed === null) return lineParsed;
+  if (yamlParsed === null) {
+    return lineParsed;
+  }
 
   const merged: ParsedFrontmatter = { ...yamlParsed };
   for (const [key, value] of Object.entries(lineParsed)) {