Campaign_Tracker/Campaign_Tracker.Server/LegacyData/Schema/LegacySchemaBaseline.cs

namespace Campaign_Tracker.Server.LegacyData.Schema;

/// <summary>
/// The approved snapshot of the legacy Access schema captured at initialization
/// (Story 1.7 AC #1). The compatibility check compares the live schema against
/// this baseline and reports any structural drift.
///
/// Sourced from <c>Initial Documents/Access_Schema.txt</c> at application startup
/// via <see cref="LegacySchemaBaselineParser"/>.
/// </summary>
public sealed record LegacySchemaBaseline(
    IReadOnlyList<LegacyTableDefinition> Tables,
    string Source,
    DateTimeOffset CapturedAt);