Fresh start: replace with naxIO/netfox-cs-sample foundation

Complete replacement of the tactical-shooter project with the
netfox-cs-sample (MIT) — a CS 1.6 inspired multiplayer FPS built
with Godot 4 and netfox.

## What's new
- Full CS-style gameplay: teams (T/CT), rounds, economy, buy menu
- 6 weapons: Knife, Glock, USP, AK-47, M4A1, AWP
- Bomb plant/defuse with 2 bombsites
- Flashbang & smoke grenades
- Proper netfox rollback netcode at 64 tick
- Network popup UI for host/join
- HUD, crosshair, round timer, scoreboard
- All netfox singletons registered as autoloads (works in exported builds)

## Architecture
- Listen-server (host from client, no dedicated server binary)
- Multiplayer-fps game lives at examples/multiplayer-fps/
- Netfox addons registered as autoloads for exported build compat
- Godot 4.7 with Forward+ renderer

## Removed
- Old headless-server architecture (client_main, server_main, player.gd, etc.)
- Custom netfox bootstrap with ENet fallback
- Old ChaffGames FPS template (2,420 lines, 844 KB)
- SimulationServer GDExtension stub
- Godot-jolt physics (netfox sample uses default Godot physics)
- Duplicate weapon_data.gd, anti_cheat.gd, round_manager.gd, etc.
- Server browser API Python venv (87 MB)
- test_range map and modular assets

## Preserved
- Git history
- Server config at config/default_server_config.cfg
- Windows export preset
- Build directory (gitignored)

Co-authored-by: naxIO <naxIO@users.noreply.github.com>

addons/godot_mcp/plugin.gd

@@ -0,0 +1,89 @@
+@tool
+extends EditorPlugin
+## Godot MCP Plugin
+## Connects to the godot-mcp-server via WebSocket and executes tools.
+
+const MCPClientScript = preload("res://addons/godot_mcp/mcp_client.gd")
+const ToolExecutorScript = preload("res://addons/godot_mcp/tool_executor.gd")
+
+var _mcp_client: Node  # MCPClient
+var _tool_executor: Node  # ToolExecutor
+var _status_label: Label
+
+func _enter_tree() -> void:
+	print("[Godot MCP] Plugin loading...")
+
+	# Create MCP client
+	_mcp_client = MCPClientScript.new()
+	_mcp_client.name = "MCPClient"
+	add_child(_mcp_client)
+
+	# Create tool executor
+	_tool_executor = ToolExecutorScript.new()
+	_tool_executor.name = "ToolExecutor"
+	add_child(_tool_executor)  # _ready() runs here, creating child tools
+	_tool_executor.set_editor_plugin(self)  # Now _visualizer_tools exists
+
+	# Connect signals
+	_mcp_client.connected.connect(_on_connected)
+	_mcp_client.disconnected.connect(_on_disconnected)
+	_mcp_client.tool_requested.connect(_on_tool_requested)
+
+	# Add status indicator to editor
+	_setup_status_indicator()
+
+	# Start connection
+	_mcp_client.connect_to_server()
+
+	print("[Godot MCP] Plugin loaded - connecting to MCP server...")
+
+func _exit_tree() -> void:
+	print("[Godot MCP] Plugin unloading...")
+
+	if _mcp_client:
+		_mcp_client.disconnect_from_server()
+		_mcp_client.queue_free()
+
+	if _tool_executor:
+		_tool_executor.queue_free()
+
+	if _status_label:
+		remove_control_from_container(EditorPlugin.CONTAINER_TOOLBAR, _status_label)
+		_status_label.queue_free()
+
+	print("[Godot MCP] Plugin unloaded")
+
+func _setup_status_indicator() -> void:
+	"""Add a small status label to the editor toolbar."""
+	_status_label = Label.new()
+	_status_label.text = "MCP: Connecting..."
+	_status_label.add_theme_color_override("font_color", Color.YELLOW)
+	_status_label.add_theme_font_size_override("font_size", 12)
+	add_control_to_container(EditorPlugin.CONTAINER_TOOLBAR, _status_label)
+
+func _on_connected() -> void:
+	print("[Godot MCP] Connected to MCP server")
+	if _status_label:
+		_status_label.text = "MCP: Connected"
+		_status_label.add_theme_color_override("font_color", Color.GREEN)
+
+func _on_disconnected() -> void:
+	print("[Godot MCP] Disconnected from MCP server")
+	if _status_label:
+		_status_label.text = "MCP: Disconnected"
+		_status_label.add_theme_color_override("font_color", Color.RED)
+
+func _on_tool_requested(request_id: String, tool_name: String, args: Dictionary) -> void:
+	"""Handle incoming tool request from MCP server."""
+	print("[Godot MCP] Executing tool: ", tool_name)
+
+	# Execute the tool
+	var result: Dictionary = _tool_executor.execute_tool(tool_name, args)
+
+	var success: bool = result.get(&"ok", false)
+	if success:
+		result.erase(&"ok")
+		_mcp_client.send_tool_result(request_id, true, result)
+	else:
+		var error: String = result.get(&"error", "Unknown error")
+		_mcp_client.send_tool_result(request_id, false, null, error)