debug: add raw value snippet to debug-sequences for regex diagnostics

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/api/registratura/debug-sequences/route.ts

@@ -22,17 +22,18 @@ export async function GET() {
     Array<{ company: string; year: number; type: string; lastSeq: number }>
   >`SELECT company, year, type, "lastSeq" FROM "RegistrySequence" ORDER BY company, year, type`;
 
-  // Sample: show actual number values from entries (for debugging regex issues)
+  // Sample: show raw value snippet + extracted number (for debugging regex issues)
   const samples = await prisma.$queryRawUnsafe<
-    Array<{ key: string; num: string }>
+    Array<{ key: string; num: string | null; snippet: string }>
   >(`
     SELECT key,
-           SUBSTRING(value::text FROM '"number":"([^"]+)"') AS num
+           SUBSTRING(value::text FROM '"number":"([^"]+)"') AS num,
+           SUBSTRING(value::text FROM 1 FOR 200) AS snippet
     FROM "KeyValueStore"
     WHERE namespace = 'registratura'
       AND key LIKE 'entry:%'
     ORDER BY key
-    LIMIT 20
+    LIMIT 5
   `);
 
   // Get actual max sequences from entries — current format: B-2026-00001