Move RAG repository from rag-api to rag-data — consolidate data layer ownership

- Move IRagRepository, EfRagRepository, and VectorSerializer from rag-api/Data to rag-data/Repositories
- Add rag-api-models ProjectReference to rag-data.csproj for model type availability
- Delete rag-api/Data folder (no longer needed; all data access is now in rag-data)
- This aligns RAG with email-api and other services: all data code in the data project

Pattern: rag-api (API logic) → rag-data (repository, EF entities, migrations)

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

Apis/cv-search-data/Data/CvSearchDbContext.cs

@@ -5,8 +5,8 @@ namespace CvSearch.Data;
 
 public sealed class CvSearchDbContext : DbContext
 {
-    public const string SchemaName = "cvSearch";
-    public const string MigrationTableName = "_Migrations";
+    public const string SchemaName = MigrationConstants.SchemaName;
+    public const string MigrationTableName = MigrationConstants.MigrationTableName;
 
     public CvSearchDbContext(DbContextOptions<CvSearchDbContext> options) : base(options) { }
 

Apis/cv-search-data/Data/MigrationConstants.cs

@@ -0,0 +1,11 @@
+namespace CvSearch.Data;
+
+/// <summary>
+/// Schema constants used by CvSearchDbContext and migrations.
+/// Centralized to avoid hardcoded strings and ensure consistency.
+/// </summary>
+public static class MigrationConstants
+{
+    public const string SchemaName = "cvSearch";
+    public const string MigrationTableName = "_Migrations";
+}

Apis/cv-search-data/Migrations/20260522093356_AddJobSearchTables.cs

@@ -1,5 +1,6 @@
 using System;
 using Microsoft.EntityFrameworkCore.Migrations;
+using CvSearch.Data;
 
 #nullable disable
 
@@ -12,11 +13,11 @@ namespace CvSearch.Data.Migrations
         protected override void Up(MigrationBuilder migrationBuilder)
         {
             migrationBuilder.EnsureSchema(
-                name: "cvSearch");
+                name: MigrationConstants.SchemaName);
 
             migrationBuilder.CreateTable(
                 name: "JobSearchResults",
-                schema: "cvSearch",
+                schema: MigrationConstants.SchemaName,
                 columns: table => new
                 {
                     Id = table.Column<string>(type: "nvarchar(64)", maxLength: 64, nullable: false),
@@ -36,7 +37,7 @@ namespace CvSearch.Data.Migrations
 
             migrationBuilder.CreateTable(
                 name: "JobSearchSessions",
-                schema: "cvSearch",
+                schema: MigrationConstants.SchemaName,
                 columns: table => new
                 {
                     Id = table.Column<string>(type: "nvarchar(64)", maxLength: 64, nullable: false),
@@ -55,7 +56,7 @@ namespace CvSearch.Data.Migrations
 
             migrationBuilder.CreateTable(
                 name: "JobSearchTokens",
-                schema: "cvSearch",
+                schema: MigrationConstants.SchemaName,
                 columns: table => new
                 {
                     Id = table.Column<string>(type: "nvarchar(64)", maxLength: 64, nullable: false),
@@ -88,15 +89,15 @@ namespace CvSearch.Data.Migrations
         {
             migrationBuilder.DropTable(
                 name: "JobSearchResults",
-                schema: "cvSearch");
+                schema: MigrationConstants.SchemaName);
 
             migrationBuilder.DropTable(
                 name: "JobSearchSessions",
-                schema: "cvSearch");
+                schema: MigrationConstants.SchemaName);
 
             migrationBuilder.DropTable(
                 name: "JobSearchTokens",
-                schema: "cvSearch");
+                schema: MigrationConstants.SchemaName);
         }
     }
 }

Apis/cv-search-data/Migrations/20260524145702_AddLanguageToJobSearchEntities.cs

@@ -1,4 +1,5 @@
 using Microsoft.EntityFrameworkCore.Migrations;
+using CvSearch.Data;
 
 #nullable disable
 
@@ -12,7 +13,7 @@ namespace CvSearch.Data.Migrations
         {
             migrationBuilder.AddColumn<string>(
                 name: "Language",
-                schema: "cvSearch",
+                schema: MigrationConstants.SchemaName,
                 table: "JobSearchTokens",
                 type: "nvarchar(8)",
                 maxLength: 8,
@@ -21,7 +22,7 @@ namespace CvSearch.Data.Migrations
 
             migrationBuilder.AddColumn<string>(
                 name: "Language",
-                schema: "cvSearch",
+                schema: MigrationConstants.SchemaName,
                 table: "JobSearchSessions",
                 type: "nvarchar(8)",
                 maxLength: 8,
@@ -34,12 +35,12 @@ namespace CvSearch.Data.Migrations
         {
             migrationBuilder.DropColumn(
                 name: "Language",
-                schema: "cvSearch",
+                schema: MigrationConstants.SchemaName,
                 table: "JobSearchTokens");
 
             migrationBuilder.DropColumn(
                 name: "Language",
-                schema: "cvSearch",
+                schema: MigrationConstants.SchemaName,
                 table: "JobSearchSessions");
         }
     }