feat(cv-matcher): add AiPrompts table; remove MyAiDbContext dependency

cv-matcher-data:
- Add AiPromptEntity (Key, Language, Value, Description, UpdatedAt)
- Add AiPrompts DbSet to CvMatcherDbContext with composite PK
- Migration AddAiPrompts: create cvMatcher.AiPrompts table and seed
  ai.cv-match.system-prompt (language "*") with the current prompt value

cv-matcher-api:
- Add IAiPromptsRepository / EfAiPromptsRepository under Data/Repositories/
- CvMatcherService: inject IAiPromptsRepository; replace _templates.Render(...)
  with async DB lookup + simple string replacement
- Program.cs: register IAiPromptsRepository (scoped); remove MyAiDbContext,
  ITemplateService/DbTemplateService registrations and MyAiDbContext migration call
- Remove myai-data ProjectReference

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

Apis/cv-matcher-api/Data/Repositories/Contracts/IAiPromptsRepository.cs

@@ -0,0 +1,6 @@
+namespace CvMatcher.Data.Repositories.Contracts;
+
+public interface IAiPromptsRepository
+{
+    Task<string?> GetAsync(string key, string language, CancellationToken ct);
+}

Apis/cv-matcher-api/Data/Repositories/EfAiPromptsRepository.cs

@@ -0,0 +1,24 @@
+using CvMatcher.Data;
+using CvMatcher.Data.Repositories.Contracts;
+using Microsoft.EntityFrameworkCore;
+
+namespace CvMatcher.Data.Repositories;
+
+public sealed class EfAiPromptsRepository : IAiPromptsRepository
+{
+    private readonly CvMatcherDbContext _db;
+
+    public EfAiPromptsRepository(CvMatcherDbContext db)
+    {
+        _db = db;
+    }
+
+    public async Task<string?> GetAsync(string key, string language, CancellationToken ct)
+    {
+        return await _db.AiPrompts
+            .AsNoTracking()
+            .Where(x => x.Key == key && x.Language == language)
+            .Select(x => x.Value)
+            .FirstOrDefaultAsync(ct);
+    }
+}

Apis/cv-matcher-api/Program.cs

@@ -10,8 +10,6 @@ using Api.Services.Contracts;
 using CvMatcher.Models.Settings;
 using CvSearch.Data;
 using Microsoft.EntityFrameworkCore;
-using MyAi.Data;
-using MyAi.Data.Services;
 using Refit;
 using Serilog;
 using Common.Settings;
@@ -76,18 +74,8 @@ try
         });
     });
 
-    builder.Services.AddDbContext<MyAiDbContext>(options =>
-    {
-        var connectionString = builder.Services.GetConfiguredDbConnectionString(builder.Configuration);
-        options.UseSqlServer(connectionString, sql =>
-        {
-            sql.MigrationsAssembly("myai-data");
-            sql.MigrationsHistoryTable(MyAiDbContext.MigrationTableName, MyAiDbContext.SchemaName);
-        });
-    });
-    builder.Services.AddSingleton<ITemplateService, DbTemplateService>();
-
     builder.Services.AddScoped<IMatcherRepository, EfMatcherRepository>();
+    builder.Services.AddScoped<IAiPromptsRepository, EfAiPromptsRepository>();
     builder.Services.AddScoped<ICvMatcherService, CvMatcherService>();
     builder.Services.AddScoped<IJobTokenService, JobTokenService>();
 
@@ -122,11 +110,6 @@ try
         var db = scope.ServiceProvider.GetRequiredService<CvSearchDbContext>();
         db.Database.Migrate();
     }
-    using (var scope = app.Services.CreateScope())
-    {
-        var db = scope.ServiceProvider.GetRequiredService<MyAiDbContext>();
-        db.Database.Migrate();
-    }
 
     Log.Information("{Service} startup complete", ServiceName);
     app.Run();

Apis/cv-matcher-api/Services/CvMatcherService.cs

@@ -7,7 +7,6 @@ using CvMatcher.Models.Responses;
 using CvMatcher.Models.Settings;
 using Api.Services.Contracts;
 using Microsoft.Extensions.Options;
-using MyAi.Data.Services;
 
 namespace Api.Services;
 
@@ -17,23 +16,23 @@ public sealed class CvMatcherService : ICvMatcherService
     private readonly IJobTextExtractor _jobTextExtractor;
     private readonly IMatcherAiClient _ai;
     private readonly IMatcherRepository _repository;
+    private readonly IAiPromptsRepository _aiPrompts;
     private readonly MatcherSettings _settings;
-    private readonly ITemplateService _templates;
 
     public CvMatcherService(
         IRagApiClient rag,
         IJobTextExtractor jobTextExtractor,
         IMatcherAiClient ai,
         IMatcherRepository repository,
-        IOptions<MatcherSettings> options,
+        IAiPromptsRepository aiPrompts,
-        ITemplateService templates)
+        IOptions<MatcherSettings> options)
     {
         _rag = rag;
         _jobTextExtractor = jobTextExtractor;
         _ai = ai;
         _repository = repository;
+        _aiPrompts = aiPrompts;
         _settings = options.Value;
-        _templates = templates;
     }
 
     public async Task<CvUploadResponse> UploadCvAsync(IFormFile file, CancellationToken ct)
@@ -115,8 +114,9 @@ public sealed class CvMatcherService : ICvMatcherService
         var evidence = evidenceChunks.Count > 0 ? string.Join("\n\n", evidenceChunks.Take(4)) : Limit(job.Text, 4000);
         var languageName = LanguageName(language);
 
-        var systemPrompt = _templates.Render("ai.cv-match.system-prompt", "*",
+        var promptTemplate = await _aiPrompts.GetAsync("ai.cv-match.system-prompt", "*", ct)
-            ("languageName", languageName));
+            ?? "You are a strict CV-to-job matching engine. Return JSON only.";
+        var systemPrompt = promptTemplate.Replace("{{languageName}}", languageName, StringComparison.OrdinalIgnoreCase);
 
         var userPrompt = $"""
             CV:

Apis/cv-matcher-api/cv-matcher-api.csproj

@@ -83,6 +83,5 @@
     <ProjectReference Include="..\cv-matcher-data\cv-matcher-data.csproj" />
     <ProjectReference Include="..\common\common.csproj" />
     <ProjectReference Include="..\..\Helpers\startup-helpers\startup-helpers.csproj" />
-    <ProjectReference Include="..\myai-data\myai-data.csproj" />
   </ItemGroup>
 </Project>

Apis/cv-matcher-data/CvMatcherDbContext.cs

@@ -14,6 +14,7 @@ public sealed class CvMatcherDbContext : DbContext
 
     public DbSet<CvMatchResultEntity> CvMatchResults => Set<CvMatchResultEntity>();
     public DbSet<CvMatcherChatCacheEntity> CvMatcherChatCache => Set<CvMatcherChatCacheEntity>();
+    public DbSet<AiPromptEntity> AiPrompts => Set<AiPromptEntity>();
 
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
@@ -41,5 +42,16 @@ public sealed class CvMatcherDbContext : DbContext
             entity.Property(x => x.ResponseText).IsRequired();
             entity.Property(x => x.CreatedAt).HasDefaultValueSql("SYSUTCDATETIME()");
         });
+
+        modelBuilder.Entity<AiPromptEntity>(entity =>
+        {
+            entity.ToTable("AiPrompts");
+            entity.HasKey(x => new { x.Key, x.Language });
+            entity.Property(x => x.Key).HasMaxLength(128);
+            entity.Property(x => x.Language).HasMaxLength(8);
+            entity.Property(x => x.Value).IsRequired();
+            entity.Property(x => x.Description).HasMaxLength(500).HasDefaultValue(string.Empty);
+            entity.Property(x => x.UpdatedAt).HasDefaultValueSql("SYSUTCDATETIME()");
+        });
     }
 }

Apis/cv-matcher-data/Entities/AiPromptEntity.cs

@@ -0,0 +1,10 @@
+namespace CvMatcher.Data.Entities;
+
+public sealed class AiPromptEntity
+{
+    public string Key { get; set; } = string.Empty;
+    public string Language { get; set; } = string.Empty;
+    public string Value { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public DateTime UpdatedAt { get; set; }
+}

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

@@ -0,0 +1,130 @@
+// <auto-generated />
+using System;
+using CvMatcher.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace CvMatcher.Data.Migrations
+{
+    [DbContext(typeof(CvMatcherDbContext))]
+    [Migration("20260528110000_AddAiPrompts")]
+    partial class AddAiPrompts
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasDefaultSchema("cvMatcher")
+                .HasAnnotation("ProductVersion", "10.0.7")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
+
+            modelBuilder.Entity("CvMatcher.Data.Entities.AiPromptEntity", 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")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("datetime2")
+                        .HasDefaultValueSql("SYSUTCDATETIME()");
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Key", "Language");
+
+                    b.ToTable("AiPrompts", "cvMatcher");
+                });
+
+            modelBuilder.Entity("CvMatcher.Data.Entities.CvMatchResultEntity", b =>
+                {
+                    b.Property<string>("Id")
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("datetime2")
+                        .HasDefaultValueSql("SYSUTCDATETIME()");
+
+                    b.Property<string>("CvDocumentId")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<string>("JobDocumentId")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<string>("Language")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("ResultJson")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("Score")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CvDocumentId", "JobDocumentId")
+                        .IsUnique();
+
+                    b.ToTable("Results", "cvMatcher");
+                });
+
+            modelBuilder.Entity("CvMatcher.Data.Entities.CvMatcherChatCacheEntity", b =>
+                {
+                    b.Property<string>("CacheKey")
+                        .HasMaxLength(64)
+                        .HasColumnType("nvarchar(64)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("datetime2")
+                        .HasDefaultValueSql("SYSUTCDATETIME()");
+
+                    b.Property<string>("Model")
+                        .IsRequired()
+                        .HasMaxLength(120)
+                        .HasColumnType("nvarchar(120)");
+
+                    b.Property<string>("ResponseText")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<decimal>("Temperature")
+                        .HasColumnType("decimal(4,2)");
+
+                    b.HasKey("CacheKey");
+
+                    b.ToTable("ChatCache", "cvMatcher");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

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

@@ -0,0 +1,49 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CvMatcher.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddAiPrompts : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "AiPrompts",
+                schema: "cvMatcher",
+                columns: table => new
+                {
+                    Key = table.Column<string>(type: "nvarchar(128)", maxLength: 128, nullable: false),
+                    Language = table.Column<string>(type: "nvarchar(8)", maxLength: 8, nullable: false),
+                    Value = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Description = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: false, defaultValue: ""),
+                    UpdatedAt = table.Column<DateTime>(type: "datetime2", nullable: false, defaultValueSql: "SYSUTCDATETIME()")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AiPrompts", x => new { x.Key, x.Language });
+                });
+
+            migrationBuilder.InsertData(
+                schema: "cvMatcher",
+                table: "AiPrompts",
+                columns: ["Key", "Language", "Value", "Description"],
+                values: new object[]
+                {
+                    "ai.cv-match.system-prompt",
+                    "*",
+                    "You are a strict CV-to-job matching engine. Return JSON only. Score realistically from 0 to 100.\nPenalize missing required skills. Do not invent experience. Use concise business language.\nRespond entirely in {{languageName}} — all text fields in the JSON must be in {{languageName}}.\nJSON shape: {\"score\":number,\"summary\":\"...\",\"strengths\":[\"...\"],\"gaps\":[\"...\"],\"recommendations\":[\"...\"],\"evidence\":[\"...\"]}",
+                    "System prompt template for the CV-to-job LLM matching call. {{languageName}} is substituted at runtime."
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(name: "AiPrompts", schema: "cvMatcher");
+        }
+    }
+}

Apis/cv-matcher-data/Migrations/CvMatcherDbContextModelSnapshot.cs

@@ -23,6 +23,37 @@ namespace CvMatcher.Data.Migrations
 
             SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
 
+            modelBuilder.Entity("CvMatcher.Data.Entities.AiPromptEntity", 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")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("datetime2")
+                        .HasDefaultValueSql("SYSUTCDATETIME()");
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Key", "Language");
+
+                    b.ToTable("AiPrompts", "cvMatcher");
+                });
+
             modelBuilder.Entity("CvMatcher.Data.Entities.CvMatchResultEntity", b =>
                 {
                     b.Property<string>("Id")