feat(dotnet): migrate core formulas, deploy tools, and blazor admin web app to .NET 10

src/dotnet/QuantEngine.Core/Interfaces/IKisApiClient.cs

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+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace QuantEngine.Core.Interfaces
+{
+    public interface IKisApiClient
+    {
+        Task<string> GetCurrentPriceAsync(string code);
+        Task<string> GetAskingPrice10LevelAsync(string code);
+        Task<string> GetDailyShortSaleAsync(string code, string startDate, string endDate);
+        Task<string> GetDailyItemChartPriceAsync(string code, string startDate, string endDate, string period = "D");
+        Task<string> GetInvestorTrendAsync(string code);
+    }
+}

src/dotnet/QuantEngine.Core/Interfaces/INaverFinanceScraper.cs

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+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace QuantEngine.Core.Interfaces
+{
+    public interface INaverFinanceScraper
+    {
+        Task<string> FetchPriceHistoryAsync(string code, int pages = 3);
+        Task<string> FetchForeignInstitutionFlowAsync(string code, int pages = 2);
+    }
+}

src/dotnet/QuantEngine.Core/Interfaces/IWorkspaceRepository.cs

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+using System.Collections.Generic;
+using System.Threading.Tasks;
+using QuantEngine.Core.Models;
+
+namespace QuantEngine.Core.Interfaces
+{
+    public interface IWorkspaceRepository
+    {
+        // Settings
+        Task<IEnumerable<Setting>> GetSettingsAsync();
+        Task<Setting?> GetSettingByKeyAsync(string key);
+        Task<bool> UpsertSettingAsync(Setting setting);
+        Task<bool> DeleteSettingAsync(string key);
+
+        // AccountSnapshot
+        Task<IEnumerable<AccountSnapshot>> GetAccountSnapshotsAsync();
+        Task<bool> InsertAccountSnapshotsAsync(IEnumerable<AccountSnapshot> snapshots);
+        Task<bool> ClearAccountSnapshotsAsync();
+
+        // WorkspaceApproval
+        Task<IEnumerable<WorkspaceApproval>> GetApprovalsAsync();
+        Task<WorkspaceApproval?> GetApprovalAsync(string domain, string targetRef);
+        Task<bool> UpsertApprovalAsync(WorkspaceApproval approval);
+
+        // WorkspaceLock
+        Task<IEnumerable<WorkspaceLock>> GetLocksAsync();
+        Task<WorkspaceLock?> GetLockAsync(string domain, string targetRef);
+        Task<bool> AcquireLockAsync(WorkspaceLock @lock);
+        Task<bool> ReleaseLockAsync(string domain, string targetRef);
+    }
+}

src/dotnet/QuantEngine.Core/Interfaces/IYahooFinanceClient.cs

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+using System.Threading.Tasks;
+
+namespace QuantEngine.Core.Interfaces
+{
+    public interface IYahooFinanceClient
+    {
+        Task<string> FetchHistoricalDataAsync(string symbol, string range = "4mo", string interval = "1d");
+    }
+}