fix: Configure EF Core migration history tables with schema-qualified names

Each DbContext now explicitly configures its migration history table to use
the schema-qualified name pattern [schemaName].[_Migrations]:
- [cvMatcher].[_Migrations] for CvMatcherDbContext
- [emailApi].[_Migrations] for EmailApiDbContext
- [cvSearch].[_Migrations] for CvSearchDbContext
- [rag].[_Migrations] for RagDbContext
- [myAi].[_Migrations] for MyAiDbContext

This is done via OnConfiguring() with UseSqlServer().MigrationsHistoryTable(name, schema).

Removed incorrect rename migrations that were created due to misunderstanding
of the proper EF Core configuration approach.

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

Apis/cv-matcher-data/CvMatcherDbContext.cs

@@ -16,6 +16,13 @@ public sealed class CvMatcherDbContext : DbContext
     public DbSet<CvMatcherChatCacheEntity> CvMatcherChatCache => Set<CvMatcherChatCacheEntity>();
     public DbSet<AiPromptEntity> AiPrompts => Set<AiPromptEntity>();
 
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        base.OnConfiguring(optionsBuilder);
+        // Configure migration history table to use schema-qualified name: [cvMatcher].[_Migrations]
+        optionsBuilder.UseSqlServer(x => x.MigrationsHistoryTable(MigrationTableName, SchemaName));
+    }
+
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.HasDefaultSchema(SchemaName);

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

@@ -14,6 +14,13 @@ public sealed class CvSearchDbContext : DbContext
     public DbSet<JobSearchSessionEntity> JobSearchSessions => Set<JobSearchSessionEntity>();
     public DbSet<JobSearchResultEntity> JobSearchResults => Set<JobSearchResultEntity>();
 
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        base.OnConfiguring(optionsBuilder);
+        // Configure migration history table to use schema-qualified name: [cvSearch].[_Migrations]
+        optionsBuilder.UseSqlServer(x => x.MigrationsHistoryTable(MigrationTableName, SchemaName));
+    }
+
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.HasDefaultSchema(SchemaName);

Apis/email-api-data/EmailApiDbContext.cs

@@ -12,6 +12,13 @@ public sealed class EmailApiDbContext : DbContext
 
     public DbSet<EmailTemplateEntity> EmailTemplates => Set<EmailTemplateEntity>();
 
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        base.OnConfiguring(optionsBuilder);
+        // Configure migration history table to use schema-qualified name: [emailApi].[_Migrations]
+        optionsBuilder.UseSqlServer(x => x.MigrationsHistoryTable(MigrationTableName, SchemaName));
+    }
+
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.HasDefaultSchema(SchemaName);

Apis/email-api-data/Migrations/20260528151849_RenameEFMigrationsTable.Designer.cs

@@ -1,69 +0,0 @@
-// <auto-generated />
-using System;
-using EmailApi.Data;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Metadata;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-
-#nullable disable
-
-namespace EmailApi.Data.Migrations
-{
-    [DbContext(typeof(EmailApiDbContext))]
-    [Migration("20260528151849_RenameEFMigrationsTable")]
-    partial class RenameEFMigrationsTable
-    {
-        /// <inheritdoc />
-        protected override void BuildTargetModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder
-                .HasDefaultSchema("emailApi")
-                .HasAnnotation("ProductVersion", "10.0.7")
-                .HasAnnotation("Relational:MaxIdentifierLength", 128);
-
-            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
-
-            modelBuilder.Entity("EmailApi.Data.Entities.EmailTemplateEntity", b =>
-                {
-                    b.Property<string>("Key")
-                        .HasMaxLength(128)
-                        .HasColumnType("nvarchar(128)");
-
-                    b.Property<string>("Language")
-                        .HasMaxLength(8)
-                        .HasColumnType("nvarchar(8)");
-
-                    b.Property<string>("Description")
-                        .IsRequired()
-                        .ValueGeneratedOnAdd()
-                        .HasMaxLength(500)
-                        .HasColumnType("nvarchar(500)")
-                        .HasDefaultValue("");
-
-                    b.Property<string>("OperatorCopy")
-                        .IsRequired()
-                        .ValueGeneratedOnAdd()
-                        .HasMaxLength(256)
-                        .HasColumnType("nvarchar(256)")
-                        .HasDefaultValue("");
-
-                    b.Property<DateTime>("UpdatedAt")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("datetime2")
-                        .HasDefaultValueSql("SYSUTCDATETIME()");
-
-                    b.Property<string>("Value")
-                        .IsRequired()
-                        .HasColumnType("nvarchar(max)");
-
-                    b.HasKey("Key", "Language");
-
-                    b.ToTable("EmailTemplates", "emailApi");
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}

Apis/email-api-data/Migrations/20260528151849_RenameEFMigrationsTable.cs

@@ -1,24 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace EmailApi.Data.Migrations
-{
-    /// <inheritdoc />
-    public partial class RenameEFMigrationsTable : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            // Rename the EF Core migrations history table to match naming convention
-            migrationBuilder.Sql("EXEC sp_rename '[emailApi].[_EmailApiMigrations]', '_Migrations'");
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            // Revert the rename
-            migrationBuilder.Sql("EXEC sp_rename '[emailApi].[_Migrations]', '_EmailApiMigrations'");
-        }
-    }
-}

Apis/myai-data/Data/MyAiDbContext.cs

@@ -12,6 +12,13 @@ public sealed class MyAiDbContext : DbContext
 
     public DbSet<TemplateEntity> Templates => Set<TemplateEntity>();
 
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        base.OnConfiguring(optionsBuilder);
+        // Configure migration history table to use schema-qualified name: [myAi].[_Migrations]
+        optionsBuilder.UseSqlServer(x => x.MigrationsHistoryTable(MigrationTableName, SchemaName));
+    }
+
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.HasDefaultSchema(SchemaName);

Apis/myai-data/Migrations/20260528151850_RenameEFMigrationsTable.Designer.cs

@@ -1,56 +0,0 @@
-// <auto-generated />
-using System;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using MyAi.Data;
-
-#nullable disable
-
-namespace MyAi.Data.Migrations
-{
-    [DbContext(typeof(MyAiDbContext))]
-    [Migration("20260528151850_RenameEFMigrationsTable")]
-    partial class RenameEFMigrationsTable
-    {
-        /// <inheritdoc />
-        protected override void BuildTargetModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder
-                .HasAnnotation("ProductVersion", "8.0.5")
-                .HasDefaultSchema("myAi");
-
-            modelBuilder.Entity("MyAi.Data.Entities.TemplateEntity", b =>
-                {
-                    b.Property<string>("Key")
-                        .HasMaxLength(128)
-                        .HasColumnType("nvarchar(128)");
-
-                    b.Property<string>("Language")
-                        .HasMaxLength(8)
-                        .HasColumnType("nvarchar(8)");
-
-                    b.Property<string>("Description")
-                        .IsRequired()
-                        .ValueGeneratedOnAdd()
-                        .HasMaxLength(500)
-                        .HasColumnType("nvarchar(500)")
-                        .HasDefaultValue("");
-
-                    b.Property<DateTime>("UpdatedAt")
-                        .HasColumnType("datetime2");
-
-                    b.Property<string>("Value")
-                        .IsRequired()
-                        .HasColumnType("nvarchar(max)");
-
-                    b.HasKey("Key", "Language");
-
-                    b.ToTable("Templates");
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}

Apis/myai-data/Migrations/20260528151850_RenameEFMigrationsTable.cs

@@ -1,24 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace MyAi.Data.Migrations
-{
-    /// <inheritdoc />
-    public partial class RenameEFMigrationsTable : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            // Rename the EF Core migrations history table to match naming convention
-            migrationBuilder.Sql("EXEC sp_rename '[myAi].[_MyAiMigrations]', '_Migrations'");
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            // Revert the rename
-            migrationBuilder.Sql("EXEC sp_rename '[myAi].[_Migrations]', '_MyAiMigrations'");
-        }
-    }
-}

Apis/rag-data/RagDbContext.cs

@@ -17,6 +17,13 @@ public sealed class RagDbContext : DbContext
     public DbSet<RagEmbeddingCacheEntity> RagEmbeddingCache => Set<RagEmbeddingCacheEntity>();
     public DbSet<RagChatCompletionCacheEntity> RagChatCompletionCache => Set<RagChatCompletionCacheEntity>();
 
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        base.OnConfiguring(optionsBuilder);
+        // Configure migration history table to use schema-qualified name: [rag].[_Migrations]
+        optionsBuilder.UseSqlServer(x => x.MigrationsHistoryTable(MigrationTableName, SchemaName));
+    }
+
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.HasDefaultSchema(SchemaName);