Initial commit: ClawdDotNet

Import des bestehenden Projektstands in Git.
- .NET 10 WinForms Anwendung (Multi-Agent / Tool-System)
- .gitignore fuer Build-Artefakte, Secrets und Runtime-Daten ergaenzt

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/ClawdDotNet.Core/State/IStateStore.cs

@@ -0,0 +1,8 @@
+namespace ClawdDotNet.Core.State;
+
+public interface IStateStore
+{
+    Task<string?> GetAsync(string key, CancellationToken ct);
+    Task SetAsync(string key, string value, CancellationToken ct);
+    Task DeleteAsync(string key, CancellationToken ct);
+}

src/ClawdDotNet.Core/State/SqliteStateStore.cs

@@ -0,0 +1,63 @@
+using Microsoft.Data.Sqlite;
+
+namespace ClawdDotNet.Core.State;
+
+public sealed class SqliteStateStore : IStateStore
+{
+    private readonly string _connectionString;
+
+    public SqliteStateStore(string dbPath)
+    {
+        _connectionString = new SqliteConnectionStringBuilder
+        {
+            DataSource = dbPath,
+            Mode = SqliteOpenMode.ReadWriteCreate
+        }.ToString();
+
+        InitializeDatabase();
+    }
+
+    private void InitializeDatabase()
+    {
+        using var conn = new SqliteConnection(_connectionString);
+        conn.Open();
+        using var cmd = conn.CreateCommand();
+        cmd.CommandText = "CREATE TABLE IF NOT EXISTS ToolState (Key TEXT PRIMARY KEY, Value TEXT)";
+        cmd.ExecuteNonQuery();
+    }
+
+    public async Task<string?> GetAsync(string key, CancellationToken ct)
+    {
+        using var conn = new SqliteConnection(_connectionString);
+        await conn.OpenAsync(ct);
+        using var cmd = conn.CreateCommand();
+        cmd.CommandText = "SELECT Value FROM ToolState WHERE Key = @key";
+        cmd.Parameters.AddWithValue("@key", key);
+        
+        var result = await cmd.ExecuteScalarAsync(ct);
+        return result?.ToString();
+    }
+
+    public async Task SetAsync(string key, string value, CancellationToken ct)
+    {
+        using var conn = new SqliteConnection(_connectionString);
+        await conn.OpenAsync(ct);
+        using var cmd = conn.CreateCommand();
+        cmd.CommandText = "INSERT OR REPLACE INTO ToolState (Key, Value) VALUES (@key, @value)";
+        cmd.Parameters.AddWithValue("@key", key);
+        cmd.Parameters.AddWithValue("@value", value);
+        
+        await cmd.ExecuteNonQueryAsync(ct);
+    }
+
+    public async Task DeleteAsync(string key, CancellationToken ct)
+    {
+        using var conn = new SqliteConnection(_connectionString);
+        await conn.OpenAsync(ct);
+        using var cmd = conn.CreateCommand();
+        cmd.CommandText = "DELETE FROM ToolState WHERE Key = @key";
+        cmd.Parameters.AddWithValue("@key", key);
+        
+        await cmd.ExecuteNonQueryAsync(ct);
+    }
+}