feat: DB-backed localized templates + language-aware emails

- New Apis/myai-models project: MyAiDbContext (schema myAi), TemplateEntity,
  ITemplateService, DbTemplateService with 10-min in-memory cache
- Seeds EN+RO variants for all user-facing templates (match email, job search
  results email, HTML status pages, AI system prompt)
- Match result email now sent in user's UI language (en/ro)
- Job search results email now respects session language
- Language propagates: MatchJobRequest -> token -> session -> email
- Add Language column to JobSearchTokens and JobSearchSessions (default 'en')
- All three Dockerfiles updated to include myai-models in build context

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

Jobs/cv-search-job/Services/CvSearchEmailSender.cs

@@ -5,17 +5,20 @@ using MailKit.Security;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using MimeKit;
+using MyAi.Models.Services;
 
 namespace CvSearchJob.Services;
 
 public sealed class CvSearchEmailSender
 {
     private readonly IConfiguration _config;
+    private readonly ITemplateService _templates;
     private readonly ILogger<CvSearchEmailSender> _logger;
 
-    public CvSearchEmailSender(IConfiguration config, ILogger<CvSearchEmailSender> logger)
+    public CvSearchEmailSender(IConfiguration config, ITemplateService templates, ILogger<CvSearchEmailSender> logger)
     {
         _config = config;
+        _templates = templates;
         _logger = logger;
     }
 
@@ -23,6 +26,7 @@ public sealed class CvSearchEmailSender
         string toEmail,
         string? attachmentPath,
         IReadOnlyList<JobSearchResultEntity> results,
+        string language,
         CancellationToken ct)
     {
         var smtpHost = _config["Smtp:Host"];
@@ -42,8 +46,9 @@ public sealed class CvSearchEmailSender
 
         if (recipients.Count == 0) return;
 
-        var body = BuildBody(results);
-        var subject = $"MyAi.ro: {results.Count} joburi potrivite CV-ului tau";
+        var body = BuildBody(results, language);
+        var subject = _templates.Render("email.search-results.subject", language,
+            ("count", results.Count.ToString()));
         var environmentName = Environment.GetEnvironmentVariable("APP_ENVIRONMENT_NAME") ?? "Development";
 
         foreach (var recipient in recipients)
@@ -77,27 +82,26 @@ public sealed class CvSearchEmailSender
         }
     }
 
-    private static string BuildBody(IReadOnlyList<JobSearchResultEntity> results)
+    private string BuildBody(IReadOnlyList<JobSearchResultEntity> results, string language)
     {
         if (results.Count == 0)
-            return "MyAi.ro nu a gasit joburi care sa corespunda CV-ului tau. Incercati mai tarziu sau ajustati CV-ul.";
-
-        var lines = new System.Text.StringBuilder();
-        lines.AppendLine($"MyAi.ro a gasit {results.Count} joburi potrivite CV-ului tau:");
-        lines.AppendLine();
+            return _templates.Get("email.search-results.empty", language);
 
+        var items = new System.Text.StringBuilder();
         for (int i = 0; i < results.Count; i++)
         {
             var r = results[i];
             var matchResp = TryParseResult(r.ResultJson);
-            lines.AppendLine($"{i + 1}. {r.JobTitle} ({r.Score}% match) [{r.ProviderName}]");
-            lines.AppendLine($"   {r.JobUrl}");
+            items.AppendLine($"{i + 1}. {r.JobTitle} ({r.Score}% match) [{r.ProviderName}]");
+            items.AppendLine($"   {r.JobUrl}");
             if (matchResp is not null && !string.IsNullOrWhiteSpace(matchResp.Summary))
-                lines.AppendLine($"   {matchResp.Summary}");
-            lines.AppendLine();
+                items.AppendLine($"   {matchResp.Summary}");
+            items.AppendLine();
         }
 
-        return lines.ToString();
+        return _templates.Render("email.search-results.body", language,
+            ("count", results.Count.ToString()),
+            ("items", items.ToString()));
     }
 
     private static JobMatchResponse? TryParseResult(string json)