feat(card): /card/create_foil_card Seer's Globe conversion (1 orb + 1 base → 1 foil)

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/Card/CardCreateFoilCardRequest.cs

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+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests.Card;
+
+/// <summary>
+/// POST /card/create_foil_card — Seer's Globe conversion (Wizard/PremiumCardConversionTask.cs).
+/// Consumes <see cref="CreateNumber"/> Orbs (Item id 1000) + <see cref="CreateNumber"/> copies of
+/// <see cref="BaseCardId"/> to grant <see cref="CreateNumber"/> copies of the foil twin (base+1).
+/// </summary>
+[MessagePackObject]
+public class CardCreateFoilCardRequest : BaseRequest
+{
+    [JsonPropertyName("base_card_id")]
+    [Key("base_card_id")]
+    public int BaseCardId { get; set; }
+
+    /// <summary>
+    /// Client's snapshot of how many normal copies it has at request time. Sanity-check only —
+    /// the actual spend is <c>create_number</c> copies, not this value.
+    /// </summary>
+    [JsonPropertyName("base_card_number")]
+    [Key("base_card_number")]
+    public int BaseCardNumber { get; set; }
+
+    /// <summary>Hardcoded to 1 by <c>PremiumCardConversionTask.SetParameter</c>.</summary>
+    [JsonPropertyName("create_number")]
+    [Key("create_number")]
+    public int CreateNumber { get; set; }
+}

SVSim.EmulatedEntrypoint/Models/Dtos/Responses/Card/CardCreateFoilCardResponse.cs

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+using MessagePack;
+using SVSim.EmulatedEntrypoint.Models.Dtos;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Responses.Card;
+
+/// <summary>
+/// /card/create_foil_card response. reward_list entries are POST-STATE TOTALS — client's
+/// <c>PlayerStaticData.UpdateHaveUserGoodsNumByJsonData</c> does direct assignment. Contains
+/// the Item (Orb) post-balance, base-card post-count, and foil-card post-count.
+/// </summary>
+[MessagePackObject]
+public class CardCreateFoilCardResponse
+{
+    [JsonPropertyName("reward_list")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.Never)]
+    [Key("reward_list")]
+    public List<RewardListEntry> RewardList { get; set; } = new();
+}