feat: show the German/French drop count in the digest

Jobs rejected for German/French content never reach jobs.csv, so daily.ts
had no way to see they existed — the digest silently under-reported how
much the run actually looked at.

index.ts now counts them across both the LinkedIn and extra-source paths
and writes results/.lang-dropped.json; daily.ts reads it back, keyed on
the digest date, and appends a count-only category. Count-only because
there is no Row to list — these were dropped before ever being parsed.

index.ts

@@ -54,6 +54,7 @@ try {
 
 const date = new Date().toISOString().slice(0, 10);
 const newRows: string[] = [];
+let totalLangDropped = 0; // jobs dropped for German/French content — never reach the CSV, so daily.ts can't see them on its own
 
 function csvCell(val: string): string {
   return `"${val.replace(/"/g, '""')}"`;
@@ -111,6 +112,7 @@ async function processLinkedInSearch(config: (typeof searches)[number]): Promise
     if (!viable.ok) {
       console.log(`dropped (${viable.reason})`);
       langDropped++;
+      totalLangDropped++;
       continue;
     }
     console.log("ok");
@@ -162,6 +164,7 @@ async function processExtraSource({ label, fetch: fetchFn }: (typeof extraSource
       if (!viable.ok) {
         console.log(`dropped (${viable.reason})`);
         langDropped++;
+        totalLangDropped++;
         continue;
       }
       console.log("ok");
@@ -184,6 +187,12 @@ await Promise.all([
   runWithConcurrency(extraSources, EXTRA_SOURCE_CONCURRENCY, processExtraSource),
 ]);
 
+// Jobs dropped for German/French content never reach the CSV, so this is the
+// only record of them — daily.ts reads it back to show a count in the digest
+// without listing rejects that were never even parsed into a Row.
+const LANG_DROPPED = "./results/.lang-dropped.json";
+await Bun.write(LANG_DROPPED, JSON.stringify({ date, count: totalLangDropped }));
+
 if (newRows.length === 0) {
   console.log("\nNo new jobs.");
   process.exit(0);