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.

README.md

@@ -70,6 +70,8 @@ The resulting binary is ~12 MB, has no .NET runtime dependency, and starts insta
 | `/status` | Show session token usage and cost |
 | `/compact` | Manually trigger context compaction |
 | `/reset` | Clear session and reset token tracker |
+| `/load` | Load a previous session from disk |
+| `/save` | Save current session to disk |
 ## Available Tools
 
 **File Operations:**
@@ -88,71 +90,7 @@ The resulting binary is ~12 MB, has no .NET runtime dependency, and starts insta
 - `rename_file` - Rename or move a file
 - `copy_file` - Copy a file to a new location
 - `append_to_file` - Append lines to the end of a file
-
-**Directory Operations:**
-- `list_dir` - List directory contents
-- `create_dir` - Create a new directory (with parent directories)
-- `rename_dir` - Rename or move a directory
-- `delete_dir` - Delete a directory and all its contents
-
-**Command Execution:**
-- `execute_command` - Run shell commands (with user approval)
-
-```
-AnchorCli/
-├── Program.cs              # Entry point + CLI parsing
-├── ReplLoop.cs             # Main REPL loop with streaming, spinners, and cancellation
-├── ChatSession.cs          # AI chat client wrapper with message history
-├── ToolRegistry.cs         # Centralized tool registration and dispatch
-├── AnchorConfig.cs         # JSON file-based configuration (~APPDATA~/anchor/config.json)
-├── ContextCompactor.cs     # Conversation history compression
-├── AppJsonContext.cs       # Source-generated JSON context (AOT)
-├── SetupTui.cs             # Interactive setup TUI
-├── Hashline/
-│   ├── HashlineEncoder.cs   # Adler-8 + position-seed hashing
-│   └── HashlineValidator.cs # Anchor resolution + validation
-├── Tools/
-│   ├── FileTools.cs         # read_file, grep_file, grep_recursive, find_files, get_file_info
-│   ├── EditTools.cs         # replace_lines, insert_after, delete_range, create/delete/rename/copy/append
-│   ├── DirTools.cs          # list_dir, create_dir, rename_dir, delete_dir
-│   └── CommandTool.cs       # execute_command
-├── Commands/
-│   ├── ICommand.cs          # Command interface
-│   ├── CommandRegistry.cs   # Command registration
-│   ├── CommandDispatcher.cs # Command dispatch logic
-│   ├── ExitCommand.cs       # /exit command
-│   ├── HelpCommand.cs       # /help command
-│   ├── ClearCommand.cs      # /clear command
-│   ├── StatusCommand.cs     # /status command
-│   ├── CompactCommand.cs    # /compact command
-│   ├── CompactCommand.cs    # /compact command
-│   ├── LoadCommand.cs       # /load command
-│   ├── SaveCommand.cs       # /save command
-│   └── ResetCommand.cs      # /reset command
-- `append_to_file` - Append lines to the end of a file
-- `batch_edit` - Apply multiple edits atomically in a single operation
-`/compact` | Manually trigger context compaction |
-/load` | Load a previous chat session from file |
-`/save` | Save current chat session to file |
-`/reset` | Clear session and reset token tracker |
-## Available Tools
-
-**File Operations:**
-- `read_file` - Read a file (or a window) with Hashline-tagged lines
-- `grep_file` - Search a file by regex — results are pre-tagged for immediate editing
-- `grep_recursive` - Search for a regex pattern across all files in a directory tree
-- `find_files` - Search for files matching glob patterns
-- `get_file_info` - Get detailed file information (size, permissions, etc.)
-
-**Edit Operations:**
-- `replace_lines` - Replace a range identified by `line:hash` anchors
-- `insert_after` - Insert lines after an anchor
-- `delete_range` - Delete a range between two anchors
-- `create_file` - Create a new file with optional initial content
-- `delete_file` - Delete a file permanently
-- `rename_file` - Rename or move a file
-- `copy_file` - Copy a file to a new location
-- `append_to_file` - Append lines to the end of a file
+- `batch_edit` - Apply multiple replace/delete operations atomically in a single call
 
 **Directory Operations:**
 - `list_dir` - List directory contents
@@ -191,7 +129,9 @@ AnchorCli/
 │   ├── StatusCommand.cs     # /status command
 │   ├── CompactCommand.cs    # /compact command
 │   ├── ResetCommand.cs      # /reset command
-│   └── SetupCommand.cs      # /setup command
+│   ├── SetupCommand.cs      # /setup command
+│   ├── LoadCommand.cs       # /load command
+│   └── SaveCommand.cs       # /save command
 └── OpenRouter/
     └── PricingProvider.cs   # Fetch model pricing from OpenRouter
 ```