fix(jobdanmark): narrow soft-404 detection to avoid rejecting real postings (#206)

The jobdanmark detail parser flagged a soft-404 by testing whether the page title contained the substring '404' anywhere, so a legitimate posting titled e.g. 'Room 404 Cleaner' was wrongly rejected as NOT_FOUND. Narrows title matching to startsWith('404') plus specific error phrases ('page not found', Danish 'siden blev ikke fundet'), keeping the existing body-text backstop. Verified: strictly reduces false-positives, the real 404-page title ('404 | Jobdanmark') still detected, tests pass network-free.

By @oscarbol09.

.agents/skills/jobdanmark-search/cli/tests/detail-parsing.test.ts

@@ -49,4 +49,23 @@ describe("parseJobPostingFromHtml", () => {
     expect(parsed.description).toContain("identificere relevante datasæt");
     expect(parsed.applyUrl).toBe("https://jfm.career.emply.com/da/apply/example");
   });
+
+  test("does not reject titles containing '404' mid-phrase", () => {
+    const htmlWith404InTitle = HTML_WITHOUT_JSON_LD.replace(
+      "<title>Journalistisk udvikler s&#xF8;ges | jobdanmark</title>",
+      "<title>HTTP 404 Page Designer | jobdanmark</title>",
+    ).replace(
+      '<h3 class="title">Journalistisk udvikler s&#xF8;ges</h3>',
+      '<h3 class="title">HTTP 404 Page Designer</h3>',
+    );
+
+    const parsed = parseJobPostingFromHtml(
+      htmlWith404InTitle,
+      "http-404-designer",
+      "https://jobdanmark.dk/job/http-404-designer",
+    );
+
+    expect(parsed.title).toBe("HTTP 404 Page Designer");
+    expect(parsed.hiringOrganization.name).toBe("JFM");
+  });
 });