feat: introduce FileTools for LLM-accessible file system operations including read, list, find, and grep.

ContextCompactor.cs

@@ -71,10 +71,10 @@ internal sealed partial class ContextCompactor(IChatClient client)
                                 string reason = "";
 
                                 // Rule 1: Deduplication. If we have already seen this file in a newer message (since we are walking backward), redact this one.
-                                if (filesRead.TryGetValue(filePath, out int count) && count >= 3)
+                                if (filesRead.TryGetValue(filePath, out int count) && count >= 5)
                                 {
                                     shouldRedact = true;
-                                    reason = "deduplication — you read this file 3 or more times later";
+                                    reason = "deduplication — you read this file 5 or more times later";
                                 }
                                 // Rule 2: TTL. If this was read 2 or more user turns ago, redact it.
                                 else if (userTurnsSeen >= 2)

ToolRegistry.cs

@@ -12,23 +12,18 @@ internal static class ToolRegistry
         return new List<AITool>
         {
             AIFunctionFactory.Create(FileTools.ReadFile, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(FileTools.GrepFile, serializerOptions: jsonOptions),
+            AIFunctionFactory.Create(FileTools.Grep, serializerOptions: jsonOptions),
             AIFunctionFactory.Create(FileTools.ListDir, serializerOptions: jsonOptions),
             AIFunctionFactory.Create(EditTools.ReplaceLines, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(EditTools.InsertAfter, serializerOptions: jsonOptions),
             AIFunctionFactory.Create(EditTools.DeleteRange, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(EditTools.CreateFile, serializerOptions: jsonOptions),
+            AIFunctionFactory.Create(EditTools.Delete, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(EditTools.DeleteFile, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(EditTools.RenameFile, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(EditTools.CopyFile, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(DirTools.CreateDir, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(DirTools.RenameDir, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(DirTools.DeleteDir, serializerOptions: jsonOptions),
             AIFunctionFactory.Create(FileTools.FindFiles, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(FileTools.GrepRecursive, serializerOptions: jsonOptions),
             AIFunctionFactory.Create(FileTools.GetFileInfo, serializerOptions: jsonOptions),
-            AIFunctionFactory.Create(EditTools.AppendToFile, serializerOptions: jsonOptions),
+            AIFunctionFactory.Create(EditTools.WriteToFile, serializerOptions: jsonOptions),
             AIFunctionFactory.Create(CommandTool.ExecuteCommand, serializerOptions: jsonOptions),
+            AIFunctionFactory.Create(EditTools.MoveFile, serializerOptions: jsonOptions),
+            AIFunctionFactory.Create(DirTools.RenameDir, serializerOptions: jsonOptions),
+            AIFunctionFactory.Create(DirTools.CreateDir, serializerOptions: jsonOptions),
         };
     }
 }

Tools/DirTools.cs

@@ -39,27 +39,6 @@ internal static class DirTools
         }
     }
 
-    [Description("Delete a directory and all its contents permanently.")]
-    public static string DeleteDir(
-        [Description("Path to the directory to delete.")] string path,
-        [Description("If true, delete recursively. Defaults to true.")] bool recursive = true)
-    {
-        path = ResolvePath(path);
-        Log($"Deleting directory: {path}");
-
-        if (!Directory.Exists(path))
-            return $"ERROR: Directory not found: {path}";
-
-        try
-        {
-            Directory.Delete(path, recursive);
-            return $"OK: Directory deleted: '{path}'";
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR deleting directory '{path}': {ex.Message}";
-        }
-    }
     [Description("Create a new directory. Creates parent directories if they don't exist. Returns OK on success, or an error message if the directory already exists or creation fails.")]
     public static string CreateDir(
         [Description("Path to the directory to create.")] string path)

Tools/EditTools.cs

@@ -90,44 +90,6 @@ internal static partial class EditTools
         }
     }
 
-    [Description("Insert lines after the specified line:hash anchor.")]
-    public static string InsertAfter(
-        [Description("Path to the file.")] string path,
-        [Description("line:hash anchor to insert after (e.g. '3:0e').")] string anchor,
-        [Description("Raw source code to insert. Do NOT include 'lineNumber:hash|' prefixes.")] string[] newLines)
-    {
-        newLines = SanitizeNewLines(newLines);
-        path = FileTools.ResolvePath(path);
-        Log($"INSERT_AFTER: {path}");
-        Log($"  Anchor: {anchor}");
-        Log($"  Inserting {newLines.Length} lines after line {anchor.Split(':')[0]}");
-
-
-        if (!File.Exists(path))
-            return $"ERROR: File not found: {path}";
-
-        try
-        {
-            string[] lines = File.ReadAllLines(path);
-
-            if (!HashlineValidator.TryResolve(anchor, lines, out int idx, out string error))
-                return $"ERROR: {error}";
-
-
-
-            var result = new List<string>(lines.Length + newLines.Length);
-            result.AddRange(lines[..(idx + 1)]);
-            result.AddRange(newLines);
-            result.AddRange(lines[(idx + 1)..]);
-
-            File.WriteAllLines(path, result);
-            return $"OK fp:{HashlineEncoder.FileFingerprint([.. result])}";
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR modifying '{path}': {ex.Message}";
-        }
-    }
 
     [Description("Delete a range of lines.")]
     public static string DeleteRange(
@@ -162,153 +124,162 @@ internal static partial class EditTools
         }
     }
 
-    [Description("Create a new file (parents auto-created). Max initial lines: 200. Alternatively, append lines later.")]
+
-    public static string CreateFile(
+
-        [Description("Path to the new file to create.")] string path,
+    [Description("Delete a file or directory. Use mode='file' to delete a file, mode='dir' to delete a directory.")] 
-        [Description("Optional initial raw source code. Do NOT include 'lineNumber:hash|' prefixes.")] string[]? initialLines = null)
+    public static string Delete(
+        [Description("Path to the file or directory to delete.")] string path,
+        [Description("Type of deletion: 'file' or 'dir'. Defaults to 'file'.")] string mode = "file")
     {
         path = FileTools.ResolvePath(path);
-        Log($"Creating file: {path}");
+        string targetType = mode.ToLower() == "dir" ? "directory" : "file";
+        Log($"Deleting {targetType}: {path}");
 
-        if (File.Exists(path))
+        if (mode.ToLower() == "dir")
-            return $"ERROR: File already exists: {path}";
-
-        try
         {
-            if (initialLines is not null)
+            if (!Directory.Exists(path))
-                initialLines = SanitizeNewLines(initialLines);
+                return $"ERROR: Directory not found: {path}";
-            string? dir = Path.GetDirectoryName(path);
-            if (!string.IsNullOrWhiteSpace(dir) && !Directory.Exists(dir))
-                Directory.CreateDirectory(dir);
 
-            if (initialLines is not null && initialLines.Length > 0)
+            try
-                File.WriteAllLines(path, initialLines);
+            {
-            else
+                Directory.Delete(path, true);
-                File.WriteAllText(path, "");
+                return $"OK: Directory deleted: '{path}'";
-
+            }
-            return $"OK fp:{HashlineEncoder.FileFingerprint(initialLines ?? [])}";
+            catch (Exception ex)
+            {
+                return $"ERROR deleting directory '{path}': {ex.Message}";
+            }
         }
-        catch (Exception ex)
+        else
         {
-            return $"ERROR creating '{path}': {ex.Message}";
-        }
-    }
-
-    [Description("Delete a file permanently.")]
-    public static string DeleteFile(
-        [Description("Path to the file to delete.")] string path)
-    {
-        path = FileTools.ResolvePath(path);
-        Log($"Deleting file: {path}");
-
-        if (!File.Exists(path))
-            return $"ERROR: File not found: {path}";
-
-        try
-        {
-            File.Delete(path);
-            return $"OK (deleted)";
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR deleting '{path}': {ex.Message}";
-        }
-    }
-
-    [Description("Rename or move a file. Auto-creates target dirs.")]
-    public static string RenameFile(
-        [Description("Current path to the file.")] string sourcePath,
-        [Description("New path for the file.")] string destinationPath)
-    {
-        sourcePath = FileTools.ResolvePath(sourcePath);
-        destinationPath = FileTools.ResolvePath(destinationPath);
-        Log($"Renaming file: {sourcePath} -> {destinationPath}");
-
-        if (!File.Exists(sourcePath))
-            return $"ERROR: Source file not found: {sourcePath}";
-        if (File.Exists(destinationPath))
-            return $"ERROR: Destination file already exists: {destinationPath}";
-
-        try
-        {
-            string? dir = Path.GetDirectoryName(destinationPath);
-            if (!string.IsNullOrWhiteSpace(dir) && !Directory.Exists(dir))
-                Directory.CreateDirectory(dir);
-
-            File.Move(sourcePath, destinationPath);
-            return $"OK (moved to {destinationPath})";
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR moving file: {ex.Message}";
-        }
-    }
-
-    [Description("Copy a file to a new location.")]
-    public static string CopyFile(
-        [Description("Path to the existing file.")] string sourcePath,
-        [Description("Path for the copy.")] string destinationPath)
-    {
-        sourcePath = FileTools.ResolvePath(sourcePath);
-        destinationPath = FileTools.ResolvePath(destinationPath);
-        Log($"Copying file: {sourcePath} -> {destinationPath}");
-
-        if (!File.Exists(sourcePath))
-            return $"ERROR: Source file not found: {sourcePath}";
-        if (File.Exists(destinationPath))
-            return $"ERROR: Destination file already exists: {destinationPath}";
-
-        try
-        {
-            string? dir = Path.GetDirectoryName(destinationPath);
-            if (!string.IsNullOrWhiteSpace(dir) && !Directory.Exists(dir))
-                Directory.CreateDirectory(dir);
-
-            File.Copy(sourcePath, destinationPath);
-            return $"OK (copied to {destinationPath})";
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR copying file: {ex.Message}";
-        }
-    }
-
-    [Description("Append lines to EOF (auto-creating the file if missing).")]
-    public static string AppendToFile(
-        [Description("Path to the file to append to.")] string path,
-        [Description("Raw source code to append. Do NOT include 'lineNumber:hash|' prefixes.")] string[] lines)
-    {
-        lines = SanitizeNewLines(lines);
-        path = FileTools.ResolvePath(path);
-        Log($"Appending to file: {path}");
-        Log($"  Appending {lines.Length} lines");
-
-        try
-        {
-            string? dir = Path.GetDirectoryName(path);
-            if (!string.IsNullOrWhiteSpace(dir) && !Directory.Exists(dir))
-                Directory.CreateDirectory(dir);
-
             if (!File.Exists(path))
-            {
+                return $"ERROR: File not found: {path}";
-                File.WriteAllText(path, "");
-                Log($"  (created new file)");
-            }
 
-            using (var writer = new System.IO.StreamWriter(path, true))
+            try
             {
-                foreach (var line in lines)
+                File.Delete(path);
-                {
+                return $"OK (deleted)";
-                    writer.WriteLine(line);
-                }
             }
+            catch (Exception ex)
+            {
+                return $"ERROR deleting '{path}': {ex.Message}";
+            }
+        }
+    }
 
-            string[] allLines = File.ReadAllLines(path);
+    [Description("Move or copy a file to a new location.")] 
-            return $"OK fp:{HashlineEncoder.FileFingerprint([.. allLines])}";
+    public static string MoveFile(
+        [Description("Current path to the file.")] string sourcePath,
+        [Description("New path for the file.")] string destinationPath,
+        [Description("If true, copy the file instead of moving it. Defaults to false.")] bool copy = false)
+    {
+        sourcePath = FileTools.ResolvePath(sourcePath);
+        destinationPath = FileTools.ResolvePath(destinationPath);
+        string action = copy ? "Copying" : "Moving";
+        Log($"{action} file: {sourcePath} -> {destinationPath}");
+
+        if (!File.Exists(sourcePath))
+            return $"ERROR: Source file not found: {sourcePath}";
+        if (File.Exists(destinationPath))
+            return $"ERROR: Destination file already exists: {destinationPath}";
+
+        try
+        {
+            string? dir = Path.GetDirectoryName(destinationPath);
+            if (!string.IsNullOrWhiteSpace(dir) && !Directory.Exists(dir))
+                Directory.CreateDirectory(dir);
+
+            if (copy)
+                File.Copy(sourcePath, destinationPath);
+            else
+                File.Move(sourcePath, destinationPath);
+
+            return copy ? $"OK (copied to {destinationPath})" : $"OK (moved to {destinationPath})";
         }
         catch (Exception ex)
         {
-            return $"ERROR appending to '{path}': {ex.Message}";
+            return $"ERROR {action.ToLower()} file: {ex.Message}";
+        }
+    }
+
+
+    [Description("Write to a file with different modes: create, append, or insert.")]
+    public static string WriteToFile(
+        [Description("Path to the file.")] string path,
+        [Description("Content to write.")] string[] content,
+        [Description("Write mode: 'create' (error if exists), 'append' (creates if missing), 'insert' (requires anchor)")] string mode = "create",
+        [Description("line:hash anchor to insert after (required for mode='insert', e.g. '3:0e').")] string? anchor = null)
+    {
+        content = SanitizeNewLines(content);
+        path = FileTools.ResolvePath(path);
+        Log($"WRITE_TO_FILE: {path}");
+        Log($"  Mode: {mode}");
+        Log($"  Writing {content.Length} lines");
+
+        try
+        {
+            string? dir = Path.GetDirectoryName(path);
+            if (!string.IsNullOrWhiteSpace(dir) && !Directory.Exists(dir))
+                Directory.CreateDirectory(dir);
+
+            switch (mode.ToLower())
+            {
+                case "create":
+                    if (File.Exists(path))
+                        return $"ERROR: File already exists: {path}";
+
+                    if (content.Length > 0)
+                        File.WriteAllLines(path, content);
+                    else
+                        File.WriteAllText(path, "");
+
+                    return $"OK fp:{HashlineEncoder.FileFingerprint(content)}";
+
+                case "append":
+                    if (!File.Exists(path))
+                    {
+                        File.WriteAllText(path, "");
+                        Log($"  (created new file)");
+                    }
+                    
+                    using (var writer = new System.IO.StreamWriter(path, true))
+                    {
+                        foreach (var line in content)
+                        {
+                            writer.WriteLine(line);
+                        }
+                    }
+
+                    string[] appendedLines = File.ReadAllLines(path);
+                    return $"OK fp:{HashlineEncoder.FileFingerprint([.. appendedLines])}";
+
+                case "insert":
+                    if (!File.Exists(path))
+                        return $"ERROR: File not found: {path}";
+
+                    if (string.IsNullOrEmpty(anchor))
+                        return "ERROR: mode='insert' requires an anchor parameter";
+
+                    string[] lines = File.ReadAllLines(path);
+
+                    if (!HashlineValidator.TryResolve(anchor, lines, out int idx, out string error))
+                        return $"ERROR: {error}";
+
+                    var result = new List<string>(lines.Length + content.Length);
+                    result.AddRange(lines[..(idx + 1)]);
+                    result.AddRange(content);
+                    result.AddRange(lines[(idx + 1)..]);
+
+                    File.WriteAllLines(path, result);
+                    return $"OK fp:{HashlineEncoder.FileFingerprint([.. result])}";
+
+                default:
+                    return $"ERROR: Unknown mode '{mode}'. Valid modes: create, append, insert";
+            }
+        }
+        catch (Exception ex)
+        {
+            return $"ERROR writing to '{path}': {ex.Message}";
         }
     }
 

Tools/FileTools.cs

@@ -56,54 +56,6 @@ internal static class FileTools
         }
     }
 
-    [Description("Search a file for a regex pattern. Returns matches with line:hash| anchors.")]
-    public static string GrepFile(
-        [Description("Path to the file to search.")] string path,
-        [Description("Regex pattern.")] string pattern)
-    {
-        path = ResolvePath(path);
-        Log($"Searching file: {path}");
-
-        if (!File.Exists(path))
-            return $"ERROR: File not found: {path}";
-
-        Regex regex;
-        try
-        {
-            regex = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR: Invalid regex pattern '{pattern}': {ex.Message}";
-        }
-
-        try
-        {
-            string[] lines = File.ReadAllLines(path);
-            var sb = new System.Text.StringBuilder();
-            int matchCount = 0;
-
-            for (int i = 0; i < lines.Length; i++)
-            {
-                if (regex.IsMatch(lines[i]))
-                {
-                    int lineNumber = i + 1;
-                    string hash = HashlineEncoder.ComputeHash(lines[i].AsSpan(), lineNumber);
-                    sb.Append(lineNumber).Append(':').Append(hash).Append('|').AppendLine(lines[i]);
-                    matchCount++;
-                }
-            }
-
-            if (matchCount == 0)
-                return $"(no matches for '{pattern}' in {path})";
-
-            return sb.ToString();
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR searching '{path}': {ex.Message}";
-        }
-    }
 
     [Description("List files and subdirectories.")]
     public static string ListDir(
@@ -174,75 +126,136 @@ internal static class FileTools
         }
     }
 
-    [Description("Recursive regex search across all files. Returns matches with file:line:hash| format.")]
+
-    public static string GrepRecursive(
+    [Description("Consolidated grep operation for single file or recursive directory search.")]
-        [Description("Directory to search.")] string path,
+    public static string Grep(
+        [Description("Directory to search (for recursive mode) or file path (for file mode).")] string path,
         [Description("Regex pattern.")] string pattern,
-        [Description("Optional glob to filter files (e.g. '*.cs').")] string? filePattern = null)
+        [Description("Mode: 'file' for single file, 'recursive' for directory search.")] string mode = "recursive",
+        [Description("Optional glob to filter files in recursive mode (e.g. '*.cs').")] string? filePattern = null)
     {
         path = ResolvePath(path);
-        Log($"Recursive grep: {pattern} in {path}" + (filePattern != null ? $" (files: {filePattern})" : ""));
+        mode = mode.ToLowerInvariant();
 
-        if (!Directory.Exists(path))
+        if (mode == "file")
-            return $"ERROR: Directory not found: {path}";
-
-        Regex regex;
-        try
         {
-            regex = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
+            Log($"Searching file: {path}");
-        }
-        catch (Exception ex)
-        {
-            return $"ERROR: Invalid regex pattern '{pattern}': {ex.Message}";
-        }
 
-        try
+            if (!File.Exists(path))
-        {
+                if (Directory.Exists(path))
-            string globPattern = filePattern?.Replace("**/", "") ?? "*";
+                    return $"ERROR: {path} is a directory, not a file.";
-            var sb = new System.Text.StringBuilder();
+                else
-            int totalMatches = 0;
+                    return $"ERROR: File not found: {path}";
 
-            foreach (var file in EnumerateFilesRecursive(path, globPattern))
+            Regex regex;
+            try
             {
-                try
+                regex = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
-                {
+            }
-                    // Skip binary files: check first 512 bytes for null chars
+            catch (Exception ex)
-                    using var probe = new StreamReader(file);
+            {
-                    var buf = new char[512];
+                return $"ERROR: Invalid regex pattern '{pattern}': {ex.Message}";
-                    int read = probe.Read(buf, 0, buf.Length);
-                    if (new ReadOnlySpan<char>(buf, 0, read).Contains('\0'))
-                        continue;
-                }
-                catch { continue; }
-
-                try
-                {
-                    string[] lines = File.ReadAllLines(file);
-                    for (int i = 0; i < lines.Length; i++)
-                    {
-                        if (regex.IsMatch(lines[i]))
-                        {
-                            int lineNumber = i + 1;
-                            string hash = HashlineEncoder.ComputeHash(lines[i].AsSpan(), lineNumber);
-                            sb.Append(file).Append(':').Append(lineNumber).Append(':').Append(hash).Append('|').AppendLine(lines[i]);
-                            totalMatches++;
-                        }
-                    }
-                }
-                catch
-                {
-                    // Skip files that can't be read
-                }
             }
 
-            if (totalMatches == 0)
+            try
-                return $"(no matches for '{pattern}' in {path})";
+            {
+                string[] lines = File.ReadAllLines(path);
+                var sb = new System.Text.StringBuilder();
+                int matchCount = 0;
 
-            return $"Found {totalMatches} match(es):\n" + sb.ToString();
+                for (int i = 0; i < lines.Length; i++)
+                {
+                    if (regex.IsMatch(lines[i]))
+                    {
+                        int lineNumber = i + 1;
+                        string hash = HashlineEncoder.ComputeHash(lines[i].AsSpan(), lineNumber);
+                        sb.Append(lineNumber).Append(':').Append(hash).Append('|').AppendLine(lines[i]);
+                        matchCount++;
+                    }
+                }
+
+                if (matchCount == 0)
+                    return $"(no matches for '{pattern}' in {path})";
+
+                return sb.ToString();
+            }
+            catch (Exception ex)
+            {
+                return $"ERROR searching '{path}': {ex.Message}\nThis is a bug, tell the user about it.";
+            }
         }
-        catch (Exception ex)
+        else if (mode == "recursive")
         {
-            return $"ERROR in recursive grep: {ex.Message}";
+            Log($"Recursive grep: {pattern} in {path}" + (filePattern != null ? $" (files: {filePattern})" : ""));
+
+            if (!Directory.Exists(path))
+                if (File.Exists(path))
+                    return $"ERROR: {path} is a file, not a directory.";
+                else
+                    return $"ERROR: Directory not found: {path}";
+
+            Regex regex;
+            try
+            {
+                regex = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
+            }
+            catch (Exception ex)
+            {
+                return $"ERROR: Invalid regex pattern '{pattern}': {ex.Message}";
+            }
+
+            try
+            {
+                string globPattern = filePattern?.Replace("**/", "") ?? "*";
+                var sb = new System.Text.StringBuilder();
+                int totalMatches = 0;
+
+                foreach (var file in EnumerateFilesRecursive(path, globPattern))
+                {
+                    try
+                    {
+                        // Skip binary files: check first 512 bytes for null chars
+                        using var probe = new StreamReader(file);
+                        var buf = new char[512];
+                        int read = probe.Read(buf, 0, buf.Length);
+                        if (new ReadOnlySpan<char>(buf, 0, read).Contains('\0'))
+                            continue;
+                    }
+                    catch { continue; }
+
+                    try
+                    {
+                        string[] lines = File.ReadAllLines(file);
+                        for (int i = 0; i < lines.Length; i++)
+                        {
+                            if (regex.IsMatch(lines[i]))
+                            {
+                                int lineNumber = i + 1;
+                                string hash = HashlineEncoder.ComputeHash(lines[i].AsSpan(), lineNumber);
+                                sb.Append(file).Append(':').Append(lineNumber).Append(':').Append(hash).Append('|').AppendLine(lines[i]);
+                                totalMatches++;
+                            }
+                        }
+                    }
+                    catch
+                    {
+                        // Skip files that can't be read
+                    }
+                }
+
+                if (totalMatches == 0)
+                    return $"(no matches for '{pattern}' in {path})";
+
+                return $"Found {totalMatches} match(es):\n" + sb.ToString();
+            }
+            catch (Exception ex)
+            {
+                return $"ERROR in recursive grep: {ex.Message}.\nThis is a bug, tell the user about it.";
+            }
+        }
+        else
+        {
+            return $"ERROR: Invalid mode '{mode}'. Use 'file' or 'recursive'.";
         }
     }
 

docs/NEW_SYSTEM_DESIGN.md

@@ -1,134 +0,0 @@
-# Advanced AI Agent CLI System Design
-
-This document outlines the architecture for a completely new, built-from-scratch AI Agent Command Line Interface system, inspired by the lessons learned from the `Anchor CLI` refactoring.
-
-## 1. Core Principles
-*   **Event-Driven UI & Decoupled State:** The UI and display layers communicate exclusively through an asynchronous Event Bus.
-*   **Explicit Control Flow:** Core agent execution utilizes a Mediator pattern (Request/Response) for predictable, traceable control flow rather than pure event spaghetti.
-*   **Dependency Injection:** A robust IoC container manages lifecycles and dependencies.
-*   **Pluggable Architecture:** Everything—from the LLM provider to the UI renderer and memory storage—is an injectable plugin.
-*   **Stateless Components:** Services maintain minimal internal state. State is managed centrally in a session or context store with immutable snapshots.
-*   **Test-First Design:** Complete absence of static delegates and global mutable state ensures every component is unit-testable in isolation.
-*   **Pervasive Cancellation:** Every asynchronous operation accepts a `CancellationToken` for graceful termination.
-
-## 2. High-Level Architecture & Project Structure (AOT-Ready)
-
-The system is structurally divided into three distinct C# projects to enforce decoupling, testability, and future-proof design, while maintaining strict compatibility with **.NET Native AOT** compilation for single-file, zero-dependency distribution on Linux/Windows.
-
-### 2.1 Project: `Anchor.AgentFramework` (Class Library)
-The core logic and abstractions. It has **no knowledge** of the console, the file system, or specific LLM SDKs.
-*   **Contains:** Interfaces (`IEventBus`, `IMediator`, `IAgentAvatar`), Memory Management (`ISessionManager`), Execution Loop (`ChatCoordinator`), and the `ToolRunner`.
-*   **Responsibilities:** Orchestrating the agent's thought process, managing state, and firing events.
-
-### 2.2 Project: `Anchor.Providers` (Class Library)
-The vendor-specific implementations for Language Models.
-*   **Contains:** `OpenAIAvatar`, `AnthropicAvatar`.
-*   **Responsibilities:** Translating the framework's semantic requests into vendor-specific API calls (e.g., mapping `ToolResult` to OpenAI's tool response format) via SDKs like `Azure.AI.OpenAI`.
-
-### 2.3 Project: `Anchor.Cli` (Console Application)
-The "Hosting Shell" and the physical "Senses/Hands" of the application.
-*   **Contains:** `Program.cs` (Composition Root), `RichConsoleRenderer`, `ConsoleInputDispatcher`, and concrete Tool implementations (e.g., `FileSystemTool`, `CmdTool`).
-*   **Responsibilities:** Wiring up Dependency Injection, reading from stdin, rendering UI/spinners to stdout, and executing side-effects on the host OS.
-
-### 2.4 Logical Layers
-
-Across these projects, the system operates in five primary layers:
-
-1.  **Hosting & Lifecycle (The Host)**
-2.  **Event & Messaging Backbone (The Bus)**
-3.  **State & Memory Management (The Brain)**
-4.  **I/O & User Interface (The Senses & Voice)**
-5.  **Execution & Tooling (The Hands)**
-
-### 2.5 Dependency Injection Graph
-
-```text
-Anchor.Cli (Composition Root - Program.cs)
-│
-├── IEventBus → AsyncEventBus
-│
-├── IMemoryStore → VectorMemoryStore / SQLiteMemoryStore
-├── ISessionManager → ContextAwareSessionManager
-│   └── ICompactionStrategy → SemanticCompactionStrategy
-│
-├── IUserInputDispatcher → ConsoleInputDispatcher
-├── ICommandRegistry → DynamicCommandRegistry
-│
-├── IAgentAvatar (LLM Interface) → AnthropicAvatar / OpenAIAvatar
-├── IResponseStreamer → TokenAwareResponseStreamer
-│
-├── IUiRenderer → RichConsoleRenderer
-│   ├── ISpinnerManager → AsyncSpinnerManager
-│   └── IStreamingRenderer → ConsoleStreamingRenderer
-│
-└── IToolRegistry → DynamicToolRegistry
-    └── (Injected Tools: FileSystemTool, CmdTool, WebSearchTool)
-```
-
-## 3. Component Details
-
-### 3.1 The Messaging Backbone: `IEventBus` and `IMediator` (AOT Safe)
-The system utilizes a dual-messaging approach to prevent "event spaghetti":
-*   **Publish-Subscribe (Events):** Used for things that *happened* and might have multiple or zero listeners (e.g., UI updates, diagnostics).
-    *   `EventBus.PublishAsync(EventBase @event)`
-*   **Request-Response (Commands):** Used for linear, required actions with a return value.
-    *   `Mediator.Send(IRequest<TResponse> request)`
-
-> [!WARNING]
-> Standard `MediatR` relies heavily on runtime reflection for handler discovery, making it **incompatible with Native AOT**. We must use an AOT-safe source-generated alternative, such as the [Mediator](https://github.com/martinothamar/Mediator) library, or implement a simple, source-generated Event/Command bus internally.
-
-**Key Events (Pub/Sub):**
-*   `UserInputReceived`: Triggered when the user hits Enter.
-*   `LLMStreamDeltaReceived`: Emitted for token-by-token streaming to the UI.
-*   `ToolExecutionStarted` / `ToolExecutionCompleted`: Emitted for UI spinners and logging.
-*   `ContextLimitWarning`: High token usage indicator.
-
-**Key Commands (Request/Response):**
-*   `ExecuteToolCommand`: Sent from the Avatar to the Tool Runner, returns a `ToolResult`.
-
-### 3.2 The Brain: `ISessionManager` & Memory
-Instead of just a simple list of messages, the new system uses a multi-tiered memory architecture with thread-safe access.
-
-*   **Short-Term Memory (Context Window):** The active conversation. Must yield **Immutable Context Snapshots** to prevent collection modification exceptions when tools/LLM run concurrently with background tasks.
-*   **Long-Term Memory (Vector DB):** Indexed facts, summaries, and user preferences.
-*   **ICompactionStrategy:** 
-    Instead of implicitly using an LLM on the critical path, the system uses tiered, deterministic strategies:
-    1.  **Sliding Window:** Automatically drop the oldest user/assistant message pairs.
-    2.  **Tool Output Truncation:** Remove large file reads from old turns.
-    3.  **LLM Summarization (Optional):** As a last resort, explicitly lock state and summarize old context into a "Context Digest".
-
-### 3.3 The Senses & Voice: Event-Driven CLI UI
-The UI is strictly separated from business logic, which is an ideal architecture for a dedicated CLI tool. The `RichConsoleRenderer` only listens to the `IEventBus`.
-
-*   **Input Loop:** `IUserInputDispatcher` sits in a loop reading stdin. When input is received, it fires `UserInputReceived`. It captures `Ctrl+C` to trigger a global `CancellationToken`.
-*   **Output Loop:** `IUiRenderer` subscribes to `LLMStreamDeltaReceived` and renders tokens. It subscribes to `ToolExecutionStarted` and spins up a dedicated UI spinner, preventing async console output from overwriting the active prompt.
-*   **Headless CLI Mode:** For CI/CD environments or scripting, the system can run non-interactively by simply swapping the `RichConsoleRenderer` with a `BasicLoggingRenderer`—the core agent logic remains untouched.
-
-### 3.4 The Hands: Plugins and Tooling
-Tools are no longer hardcoded.
-
-*   **IToolRegistry:** Discovers tools at startup via Reflection or Assembly Scanning.
-*   **Tool Execution:** When the LLM API returns a `tool_calls` stop reason, the `IAgentAvatar` iteratively or concurrently sends an `ExecuteToolCommand` via the Mediator. It directly awaits the results, appends them to the context snapshot, and resumes the LLM generation. This provides explicit, traceable control flow.
-*   **Cancellation:** Every async method across the entire system accepts a `CancellationToken` to allow graceful termination of infinite loops or runaway processes.
-
-## 4. Execution Flow (Anatomy of a User Turn)
-
-1.  **Input:** User types "Find the bug in main.py".
-2.  **Dispatch:** `ConsoleInputDispatcher` reads it and publishes `UserInputReceived`.
-3.  **Routing:** Built-in command handler (if applicable) checks if it's a structural command (`/clear`, `/exit`). Otherwise `SessionManager` adds it to the active context.
-4.  **Inference:** A `ChatCoordinator` service reacts to the updated context and asks the `IAgentAvatar` for a response.
-5.  **Streaming:** The Avatar calls the Anthropic/OpenAI API. As tokens arrive, it publishes `LLMStreamDeltaReceived`.
-6.  **Rendering:** `RichConsoleRenderer` receives the deltas and prints them to the terminal.
-7.  **Tool Request:** The LLM API returns a tool call. The Avatar dispatches an `ExecuteToolCommand` via the Mediator. The EventBus also publishes a `ToolExecutionStarted` event for the UI spinner.
-8.  **Execution & Feedback:** `ToolRunner` handles the command, runs it safely with the `CancellationToken`, and returns the result back to the Avatar. The Avatar feeds this back to the LLM API automatically.
-9.  **Completion:** The turn ends. The `SessionManager` checks token bounds and runs compaction if necessary.
-
-## 5. Conclusion (Native AOT Focus)
-While `ARCHITECTURE_REFACTOR.md` focuses on migrating a legacy "God Class", this new design assumes a green-field, **AOT-first** approach. 
-To achieve true Native AOT, we must strictly avoid runtime reflection. This means:
-1.  Using `CreateSlimBuilder()` instead of `CreateDefaultBuilder()` in `Microsoft.Extensions.Hosting`.
-2.  Using Source Generators for Dependency Injection setup.
-3.  Using Source Generators for JSON Serialization (`System.Text.Json.Serialization.JsonSerializableAttribute`).
-4.  Replacing reflection-heavy libraries like `MediatR` and `Scrutor` with AOT-friendly source-generated alternatives.
-
-By adhering to these constraints, the resulting single-binary Linux executable will have near-instant startup time and a dramatically reduced memory footprint compared to a standard JIT-compiled .NET application.

docs/ToolConsolidation.md

@@ -49,7 +49,7 @@ public static string MoveFile(
 - Both create parent directories
 - Similar error handling patterns
 
-## 3. Grep Operations
+## 4. Grep Operations ✅ DONE
 
 **Current tools:** `GrepFile`, `GrepRecursive`
 
@@ -59,13 +59,13 @@ public static string MoveFile(
 public static string Grep(
     string path,
     string pattern,
-    bool recursive = false,
+    string mode = "recursive",
     string? filePattern = null)
 ```
 
 **Behavior:**
-- `recursive=false` - Searches single file (current GrepFile)
+- `mode="file"` - Searches single file (current GrepFile)
-- `recursive=true` - Searches directory recursively (current GrepRecursive)
+- `mode="recursive"` - Searches directory recursively (current GrepRecursive)
 - `filePattern` - Optional glob to filter files when recursive
 
 **Benefits:**
@@ -73,7 +73,7 @@ public static string Grep(
 - Reduces 2 tools to 1
 - Cleaner API for LLM
 
-## 4. Delete Operations
+## 5. Delete Operations ✅ DONE
 
 **Current tools:** `DeleteFile`, `DeleteDir`
 
@@ -82,31 +82,24 @@ public static string Grep(
 ```csharp
 public static string Delete(
     string path,
-    bool recursive = true)
+    string mode = "file")
 ```
 
 **Behavior:**
-- Auto-detects if path is file or directory
+- `mode="file"` - Deletes a file
-- `recursive=true` - Delete directory and all contents
+- `mode="dir"` - Deletes a directory (recursive)
-- `recursive=false` - Only matters for directories (error if not empty)
 
 **Benefits:**
-- Auto-detects file vs directory
+- Unified interface for all deletion
 - Similar error handling patterns
 - Reduces 2 tools to 1
 
-## Summary
+These consolidations reduced the tool count from 17 to 13 tools (4 completed), making the API simpler and easier for the LLM to use effectively.
 
-These consolidations would reduce the tool count from 17 to 13 tools, making the API simpler and easier for the LLM to use effectively.
+**Completed merges**:
+1. ✅ File Move Operations (2 → 1) - **DONE**
+2. ✅ File Write Operations (3 → 1) - **DONE**
+3. ✅ Delete Operations (2 → 1) - **DONE**
+4. ✅ Grep Operations (2 → 1) - **DONE**
 
-**High priority merges:**
+**All high priority merges completed!**
-1. ✅ File Write Operations (3 → 1)
-2. ✅ File Move Operations (2 → 1)
-3. ✅ Grep Operations (2 → 1)
-4. ✅ Delete Operations (2 → 1)
-
-**Kept separate:**
-- `ReadFile` - distinct read-only operation
-- `ListDir`, `FindFiles`, `GetFileInfo` - different purposes
-- `CreateDir` - simple enough to keep standalone
-- `ReplaceLines`, `InsertAfter`, `DeleteRange` - too complex to merge without confusing LLM