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-matcher-data/Migrations/20260507140442_InitialCvMatcherSchema.cs

@@ -1,5 +1,6 @@
 using System;
 using Microsoft.EntityFrameworkCore.Migrations;
+using CvMatcher.Data;
 
 #nullable disable
 
@@ -12,11 +13,11 @@ namespace CvMatcher.Data.Migrations
         protected override void Up(MigrationBuilder migrationBuilder)
         {
             migrationBuilder.EnsureSchema(
-                name: "cvMatcher");
+                name: MigrationConstants.SchemaName);
 
             migrationBuilder.CreateTable(
                 name: "ChatCache",
-                schema: "cvMatcher",
+                schema: MigrationConstants.SchemaName,
                 columns: table => new
                 {
                     CacheKey = table.Column<string>(type: "nvarchar(64)", maxLength: 64, nullable: false),
@@ -32,7 +33,7 @@ namespace CvMatcher.Data.Migrations
 
             migrationBuilder.CreateTable(
                 name: "Results",
-                schema: "cvMatcher",
+                schema: MigrationConstants.SchemaName,
                 columns: table => new
                 {
                     Id = table.Column<string>(type: "nvarchar(64)", maxLength: 64, nullable: false),
@@ -49,7 +50,7 @@ namespace CvMatcher.Data.Migrations
 
             migrationBuilder.CreateIndex(
                 name: "IX_Results_CvDocumentId_JobDocumentId",
-                schema: "cvMatcher",
+                schema: MigrationConstants.SchemaName,
                 table: "Results",
                 columns: new[] { "CvDocumentId", "JobDocumentId" },
                 unique: true);
@@ -60,11 +61,11 @@ namespace CvMatcher.Data.Migrations
         {
             migrationBuilder.DropTable(
                 name: "ChatCache",
-                schema: "cvMatcher");
+                schema: MigrationConstants.SchemaName);
 
             migrationBuilder.DropTable(
                 name: "Results",
-                schema: "cvMatcher");
+                schema: MigrationConstants.SchemaName);
         }
     }
 }

Apis/cv-matcher-data/Migrations/20260524140335_AddLanguageToCvMatchResult.cs

@@ -1,4 +1,5 @@
 using Microsoft.EntityFrameworkCore.Migrations;
+using CvMatcher.Data;
 
 #nullable disable
 
@@ -12,7 +13,7 @@ namespace CvMatcher.Data.Migrations
         {
             migrationBuilder.AddColumn<string>(
                 name: "Language",
-                schema: "cvMatcher",
+                schema: MigrationConstants.SchemaName,
                 table: "Results",
                 type: "nvarchar(max)",
                 nullable: false,
@@ -24,7 +25,7 @@ namespace CvMatcher.Data.Migrations
         {
             migrationBuilder.DropColumn(
                 name: "Language",
-                schema: "cvMatcher",
+                schema: MigrationConstants.SchemaName,
                 table: "Results");
         }
     }

Apis/cv-matcher-data/Migrations/20260528110000_AddAiPrompts.cs

@@ -1,5 +1,6 @@
 using System;
 using Microsoft.EntityFrameworkCore.Migrations;
+using CvMatcher.Data;
 
 #nullable disable
 
@@ -13,7 +14,7 @@ namespace CvMatcher.Data.Migrations
         {
             migrationBuilder.CreateTable(
                 name: "AiPrompts",
-                schema: "cvMatcher",
+                schema: MigrationConstants.SchemaName,
                 columns: table => new
                 {
                     Key = table.Column<string>(type: "nvarchar(128)", maxLength: 128, nullable: false),
@@ -28,7 +29,7 @@ namespace CvMatcher.Data.Migrations
                 });
 
             migrationBuilder.InsertData(
-                schema: "cvMatcher",
+                schema: MigrationConstants.SchemaName,
                 table: "AiPrompts",
                 columns: ["Key", "Language", "Value", "Description"],
                 values: new object[]
@@ -43,7 +44,7 @@ namespace CvMatcher.Data.Migrations
         /// <inheritdoc />
         protected override void Down(MigrationBuilder migrationBuilder)
         {
-            migrationBuilder.DropTable(name: "AiPrompts", schema: "cvMatcher");
+            migrationBuilder.DropTable(name: "AiPrompts", schema: MigrationConstants.SchemaName);
         }
     }
 }