feat: add platform public question bank workspace

Tiku.Infrastructure/Persistence/Configurations/QuestionConfigurations.cs

@@ -21,6 +21,10 @@ internal sealed class QuestionBankConfiguration : IEntityTypeConfiguration<Quest
             .HasForeignKey(entity => new { entity.TenantId, entity.RegionId })
             .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
             .OnDelete(DeleteBehavior.Restrict);
+        builder.HasOne<ContentEntry>().WithMany()
+            .HasForeignKey(entity => new { entity.TenantId, entity.ContentEntryId })
+            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
+            .OnDelete(DeleteBehavior.Restrict);
     }
 }
 

Tiku.Infrastructure/Persistence/Migrations/20260730034205_AddPlatformQuestionBankWorkspace.cs

@@ -0,0 +1,80 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Tiku.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddPlatformQuestionBankWorkspace : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<Guid>(
+                name: "content_entry_id",
+                table: "question_banks",
+                type: "uuid",
+                nullable: true);
+
+            migrationBuilder.Sql("""
+                INSERT INTO content_entries (
+                    id, tenant_id, entry_key, name, entry_type, visibility,
+                    access_rules, layout_config, sort_order, is_active, created_at, updated_at)
+                SELECT
+                    qb.id,
+                    qb.tenant_id,
+                    'public-question-bank-' || replace(qb.id::text, '-', ''),
+                    qb.name,
+                    'question_practice',
+                    'public',
+                    '{}'::jsonb,
+                    '{}'::jsonb,
+                    0,
+                    true,
+                    qb.created_at,
+                    qb.updated_at
+                FROM question_banks qb
+                JOIN tenants t ON t.id = qb.tenant_id AND t.mode = 'platform_owned'
+                WHERE NOT EXISTS (SELECT 1 FROM content_entries ce WHERE ce.id = qb.id);
+
+                UPDATE question_banks qb
+                SET content_entry_id = qb.id
+                FROM tenants t
+                WHERE t.id = qb.tenant_id
+                  AND t.mode = 'platform_owned'
+                  AND qb.content_entry_id IS NULL
+                  AND EXISTS (SELECT 1 FROM content_entries ce WHERE ce.tenant_id = qb.tenant_id AND ce.id = qb.id);
+                """);
+
+            migrationBuilder.CreateIndex(
+                name: "ix_question_banks_tenant_id_content_entry_id",
+                table: "question_banks",
+                columns: new[] { "tenant_id", "content_entry_id" });
+
+            migrationBuilder.AddForeignKey(
+                name: "fk_question_banks_content_entries_tenant_id_content_entry_id",
+                table: "question_banks",
+                columns: new[] { "tenant_id", "content_entry_id" },
+                principalTable: "content_entries",
+                principalColumns: new[] { "tenant_id", "id" },
+                onDelete: ReferentialAction.Restrict);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "fk_question_banks_content_entries_tenant_id_content_entry_id",
+                table: "question_banks");
+
+            migrationBuilder.DropIndex(
+                name: "ix_question_banks_tenant_id_content_entry_id",
+                table: "question_banks");
+
+            migrationBuilder.DropColumn(
+                name: "content_entry_id",
+                table: "question_banks");
+        }
+    }
+}

Tiku.Infrastructure/Persistence/Migrations/TikuDbContextModelSnapshot.cs

@@ -14290,6 +14290,10 @@ namespace Tiku.Infrastructure.Persistence.Migrations
                         .HasColumnName("id")
                         .HasDefaultValueSql("gen_random_uuid()");
 
+                    b.Property<Guid?>("ContentEntryId")
+                        .HasColumnType("uuid")
+                        .HasColumnName("content_entry_id");
+
                     b.Property<DateTimeOffset>("CreatedAt")
                         .ValueGeneratedOnAdd()
                         .HasColumnType("timestamp with time zone")
@@ -14334,6 +14338,9 @@ namespace Tiku.Infrastructure.Persistence.Migrations
                     b.HasAlternateKey("TenantId", "Id")
                         .HasName("ak_question_banks_tenant_id_id");
 
+                    b.HasIndex("TenantId", "ContentEntryId")
+                        .HasDatabaseName("ix_question_banks_tenant_id_content_entry_id");
+
                     b.HasIndex("TenantId", "RegionId")
                         .HasDatabaseName("ix_question_banks_tenant_id_region_id");
 
@@ -19706,6 +19713,13 @@ namespace Tiku.Infrastructure.Persistence.Migrations
                         .IsRequired()
                         .HasConstraintName("fk_question_banks_tenants_tenant_id");
 
+                    b.HasOne("Tiku.Domain.Content.ContentEntry", null)
+                        .WithMany()
+                        .HasForeignKey("TenantId", "ContentEntryId")
+                        .HasPrincipalKey("TenantId", "Id")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .HasConstraintName("fk_question_banks_content_entries_tenant_id_content_entry_id");
+
                     b.HasOne("Tiku.Domain.Catalog.Region", null)
                         .WithMany()
                         .HasForeignKey("TenantId", "RegionId")