Initial commit to new repository

src/AxCopilot/Services/Agent/GlobTool.cs

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+using System.IO;
+using System.Text.Json;
+
+namespace AxCopilot.Services.Agent;
+
+/// <summary>파일 패턴 검색 도구. glob 패턴으로 파일 목록을 반환합니다.</summary>
+public class GlobTool : IAgentTool
+{
+    public string Name => "glob";
+    public string Description => "Find files matching a glob pattern (e.g. '**/*.cs', 'src/**/*.json'). Returns matching file paths.";
+
+    public ToolParameterSchema Parameters => new()
+    {
+        Properties = new()
+        {
+            ["pattern"] = new() { Type = "string", Description = "Glob pattern to match files (e.g. '**/*.cs', '*.txt')" },
+            ["path"] = new() { Type = "string", Description = "Directory to search in. Optional, defaults to work folder." },
+        },
+        Required = ["pattern"]
+    };
+
+    public Task<ToolResult> ExecuteAsync(JsonElement args, AgentContext context, CancellationToken ct)
+    {
+        var pattern = args.GetProperty("pattern").GetString() ?? "";
+        var searchPath = args.TryGetProperty("path", out var p) ? p.GetString() ?? "" : "";
+
+        var baseDir = string.IsNullOrEmpty(searchPath)
+            ? context.WorkFolder
+            : FileReadTool.ResolvePath(searchPath, context.WorkFolder);
+
+        if (string.IsNullOrEmpty(baseDir) || !Directory.Exists(baseDir))
+            return Task.FromResult(ToolResult.Fail($"디렉토리가 존재하지 않습니다: {baseDir}"));
+
+        if (!context.IsPathAllowed(baseDir))
+            return Task.FromResult(ToolResult.Fail($"경로 접근 차단: {baseDir}"));
+
+        try
+        {
+            // glob 패턴을 Directory.EnumerateFiles용으로 변환
+            var searchPattern = ExtractSearchPattern(pattern);
+            var recursive = pattern.Contains("**") || pattern.Contains('/') || pattern.Contains('\\');
+            var option = recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly;
+
+            var files = Directory.EnumerateFiles(baseDir, searchPattern, option)
+                .Where(f => context.IsPathAllowed(f))
+                .OrderBy(f => f)
+                .Take(200)
+                .ToList();
+
+            if (files.Count == 0)
+                return Task.FromResult(ToolResult.Ok($"패턴 '{pattern}'에 일치하는 파일이 없습니다."));
+
+            var result = string.Join("\n", files.Select(f => Path.GetRelativePath(baseDir, f)));
+            return Task.FromResult(ToolResult.Ok($"{files.Count}개 파일 발견:\n{result}"));
+        }
+        catch (Exception ex)
+        {
+            return Task.FromResult(ToolResult.Fail($"검색 실패: {ex.Message}"));
+        }
+    }
+
+    private static string ExtractSearchPattern(string globPattern)
+    {
+        // **/*.cs → *.cs, src/**/*.json → *.json
+        var parts = globPattern.Replace('/', '\\').Split('\\');
+        var last = parts[^1];
+        return string.IsNullOrEmpty(last) || last == "**" ? "*" : last;
+    }
+}