Fix language consistency in job search and match emails

1. Pass session.Language to MatchJobRequest in cv-search-job so the LLM
   uses the correct language-specific prompt for job titles and summaries.

2. Replace hardcoded "Manual job description" with a template-driven label
   (email.match.manual-job-label) seeded in English and Romanian, so the
   match email subject and Job row reflect the user's language.

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

Jobs/cv-search-job/Tasks/CvSearchJobTask.cs

@@ -198,7 +198,9 @@ public sealed class CvSearchJobTask : IJobTask
                     // Pre-fetched text passed directly so cv-matcher-api skips re-fetching the page
                     JobDescription = jobText,
                     // User already gave GDPR consent when they clicked the one-time job search link
-                    GdprConsent = true
+                    GdprConsent = true,
+                    // Propagate language so the LLM uses the correct language-specific prompt
+                    Language = session.Language
                 };
 
                 var matchResult = await _matcherApi.MatchJobAsync(matchRequest, ct);