feat: add EditTools.cs to implement file manipulation functions like replace_lines, delete_range, and batch_edit, updating README.md to reflect new tools and command descriptions.

docs/ToolConsolidation.md

@@ -1,105 +0,0 @@
-# Tool Consolidation Ideas
-
-This document outlines opportunities to merge similar tools to simplify the API.
-
-## 1. File Write Operations
-
-**Current tools:** `CreateFile`, `InsertAfter`, `AppendToFile`
-
-**Proposed merge:** `WriteToFile`
-
-```csharp
-public static string WriteToFile(
-    string path,
-    string[] content,
-    string? mode = "create",
-    string? anchor = null)
-```
-
-**Behavior:**
-- `mode="create"` - Creates new file (error if exists)
-- `mode="append"` - Appends to EOF (creates if missing)
-- `mode="insert"` - Inserts after anchor (requires existing file)
-
-**Benefits:**
-- Reduces 3 tools to 1
-- Cleaner API for LLM
-- Unified error handling
-
-## 2. File Move Operations
-
-**Current tools:** `RenameFile`, `CopyFile`
-
-**Proposed merge:** `MoveFile`
-
-```csharp
-public static string MoveFile(
-    string sourcePath,
-    string destinationPath,
-    bool copy = false)
-```
-
-**Behavior:**
-- `copy=false` - Moves file (current RenameFile behavior)
-- `copy=true` - Copies file (current CopyFile behavior)
-
-**Benefits:**
-- 90% identical logic
-- Only difference is File.Move vs File.Copy
-- Both create parent directories
-- Similar error handling patterns
-
-## 4. Grep Operations ✅ DONE
-
-**Current tools:** `GrepFile`, `GrepRecursive`
-
-**Proposed merge:** `Grep`
-
-```csharp
-public static string Grep(
-    string path,
-    string pattern,
-    string mode = "recursive",
-    string? filePattern = null)
-```
-
-**Behavior:**
-- `mode="file"` - Searches single file (current GrepFile)
-- `mode="recursive"` - Searches directory recursively (current GrepRecursive)
-- `filePattern` - Optional glob to filter files when recursive
-
-**Benefits:**
-- Very similar logic
-- Reduces 2 tools to 1
-- Cleaner API for LLM
-
-## 5. Delete Operations ✅ DONE
-
-**Current tools:** `DeleteFile`, `DeleteDir`
-
-**Proposed merge:** `Delete`
-
-```csharp
-public static string Delete(
-    string path,
-    string mode = "file")
-```
-
-**Behavior:**
-- `mode="file"` - Deletes a file
-- `mode="dir"` - Deletes a directory (recursive)
-
-**Benefits:**
-- Unified interface for all deletion
-- Similar error handling patterns
-- Reduces 2 tools to 1
-
-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.
-
-**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**
-
-**All high priority merges completed!**