Initial commit to new repository

src/AxCopilot/Services/Agent/ClipboardTool.cs

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+using System.Text.Json;
+using System.Windows;
+
+namespace AxCopilot.Services.Agent;
+
+/// <summary>
+/// Windows 클립보드 읽기·쓰기 도구.
+/// 에이전트가 클립보드를 통해 데이터를 주고받을 수 있게 합니다.
+/// </summary>
+public class ClipboardTool : IAgentTool
+{
+    public string Name => "clipboard_tool";
+    public string Description =>
+        "Read or write the Windows clipboard. Actions: " +
+        "'read' — get current clipboard text content; " +
+        "'write' — set clipboard text content; " +
+        "'has_text' — check if clipboard contains text; " +
+        "'has_image' — check if clipboard contains an image.";
+
+    public ToolParameterSchema Parameters => new()
+    {
+        Properties = new()
+        {
+            ["action"] = new()
+            {
+                Type = "string",
+                Description = "Action to perform",
+                Enum = ["read", "write", "has_text", "has_image"],
+            },
+            ["text"] = new()
+            {
+                Type = "string",
+                Description = "Text to write to clipboard (required for 'write' action)",
+            },
+        },
+        Required = ["action"],
+    };
+
+    public Task<ToolResult> ExecuteAsync(JsonElement args, AgentContext context, CancellationToken ct = default)
+    {
+        var action = args.GetProperty("action").GetString() ?? "";
+
+        try
+        {
+            // 클립보드는 STA 스레드에서만 접근 가능
+            ToolResult? result = null;
+            Application.Current.Dispatcher.Invoke(() =>
+            {
+                result = action switch
+                {
+                    "read"      => ReadClipboard(),
+                    "write"     => WriteClipboard(args),
+                    "has_text"  => ToolResult.Ok(Clipboard.ContainsText() ? "true" : "false"),
+                    "has_image" => ToolResult.Ok(Clipboard.ContainsImage() ? "true" : "false"),
+                    _           => ToolResult.Fail($"Unknown action: {action}"),
+                };
+            });
+            return Task.FromResult(result ?? ToolResult.Fail("클립보드 접근 실패"));
+        }
+        catch (Exception ex)
+        {
+            return Task.FromResult(ToolResult.Fail($"클립보드 오류: {ex.Message}"));
+        }
+    }
+
+    private static ToolResult ReadClipboard()
+    {
+        if (!Clipboard.ContainsText())
+            return ToolResult.Ok("(clipboard is empty or contains non-text data)");
+
+        var text = Clipboard.GetText();
+        if (string.IsNullOrEmpty(text))
+            return ToolResult.Ok("(empty)");
+
+        if (text.Length > 10000)
+            return ToolResult.Ok(text[..10000] + $"\n\n... (truncated, total {text.Length} chars)");
+
+        return ToolResult.Ok(text);
+    }
+
+    private static ToolResult WriteClipboard(JsonElement args)
+    {
+        if (!args.TryGetProperty("text", out var textProp))
+            return ToolResult.Fail("'text' parameter is required for write action");
+
+        var text = textProp.GetString() ?? "";
+        Clipboard.SetText(text);
+        return ToolResult.Ok($"✓ Clipboard updated ({text.Length} chars)");
+    }
+}