Add content-level language filter, recheck command, expanded keywords

- isEnglishContent() fetches each job page and drops descriptions with ≥6 German or French indicator words; called for every new job in index.ts before writing to CSV
- New `bun recheck` command (recheck.ts) runs searches in raw mode, lists filtered-out jobs, and prints word-frequency suggestions for SOFTWARE_TITLE_RE
- Expanded KEYWORDS and SOFTWARE_TITLE_RE to cover ML/AI, system/applications engineer, director, informatics, and more title variants
- Added `raw` flag to fetchJobs() to bypass the software-role filter
- Add CLAUDE.md with project workflow docs; add CV files and city temp scripts

index.ts

@@ -1,6 +1,6 @@
 #!/usr/bin/env bun
 import { searches } from "./config.ts";
-import { fetchJobs } from "./fetch.ts";
+import { fetchJobs, isEnglishContent } from "./fetch.ts";
 
 const CSV = "./jobs.csv";
 const HEADER = "date_found,posted_at,search,title,company,link";
@@ -34,8 +34,17 @@ for (const config of searches) {
   }
 
   let added = 0;
+  let langDropped = 0;
   for (const job of jobs) {
     if (!existingIds.has(job.id)) {
+      process.stdout.write(`  checking content: ${job.title} … `);
+      const english = await isEnglishContent(job.id);
+      if (!english) {
+        console.log("dropped (non-English)");
+        langDropped++;
+        continue;
+      }
+      console.log("ok");
       existingIds.add(job.id);
       newRows.push(
         [date, job.postedAt, config.label, job.title, job.company, job.link]
@@ -45,7 +54,7 @@ for (const config of searches) {
       added++;
     }
   }
-  console.log(`  ${jobs.length} found, ${added} new`);
+  console.log(`  ${jobs.length} found, ${added} new, ${langDropped} non-English dropped`);
 }
 
 if (newRows.length === 0) {