refactor(data): rename email-api-data to email-data for consistent naming

- Rename project folder Apis/email-api-data → Apis/email-data
- Rename csproj file: email-api-data.csproj → email-data.csproj
- Update csproj properties: AssemblyName and RootNamespace (email-data, Email.Data)
- Update C# namespaces: EmailApi.Data → Email.Data across all email-data files
- Update project references in api.csproj and email-api.csproj
- Update migration assembly references in api/Program.cs and email-api/Program.cs
- Update cv-search-job references to use email-data project and Email.Data namespace
- Update solution file to reference new email-data project path
- Remove hardcoded schema name from SmtpEmailDispatcher, use template service instead

This maintains consistency with other data project naming convention (no service-type suffix).
All tests passing, build succeeds.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

Apis/email-api/email-api.csproj

@@ -23,7 +23,7 @@
     <ProjectReference Include="..\..\Helpers\startup-helpers\startup-helpers.csproj" />
     <ProjectReference Include="..\api-models\api-models.csproj" />
     <ProjectReference Include="..\common\common.csproj" />
-    <ProjectReference Include="..\email-api-data\email-api-data.csproj" />
+    <ProjectReference Include="..\email-data\email-data.csproj" />
     <ProjectReference Include="..\email-api-models\email-api-models.csproj" />
   </ItemGroup>
 </Project>