make slug normalization consistent

Author: jaffrepaul

app/api/source-map/route.ts

@@ -13,8 +13,8 @@ export async function GET() {
   const sourceMap: Record<string, string | null> = {};
 
   for (const doc of docs) {
-    // Normalize slug (remove trailing slash if present)
-    const slug = doc.slug.replace(/\/$/, '');
+    // Normalize slug (remove leading and trailing slashes to match main.ts trimSlashes)
+    const slug = doc.slug.replace(/(^\/|\/$)/g, '');
     // sourcePath will be null for API-generated pages, which we want to keep
     sourceMap[slug] = doc.sourcePath ?? null;
   }

scripts/lint-404s/main.ts

@@ -49,7 +49,8 @@ async function deduplicateSlugs(
     let skippedCount = 0;
 
     for (const slug of allSlugs) {
-      const normalizedSlug = slug.replace(/\/$/, '');
+      // Use same normalization as route.ts (remove leading and trailing slashes)
+      const normalizedSlug = slug.replace(/(^\/|\/$)/g, '');
       const sourcePath = sourceMap[normalizedSlug];
 
       // Always check API-generated pages (no source file)