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/vest/mocks/vest-mock-generator.gd

@@ -0,0 +1,48 @@
+extends RefCounted
+class_name VestMockGenerator
+
+## Generates mocks for existing scripts
+##
+## @tutorial(Mocks): https://foxssake.github.io/vest/latest/user-guide/mocks/
+
+# TODO: Support getters and setters?
+
+## Generate a mocked version of a script
+func generate_mock_script(script: Script) -> Script:
+	var dummy_script := preload("res://addons/vest/mocks/vest-mock-dummy.gd") as Script
+	var mock_script := dummy_script.duplicate() as Script
+	mock_script.source_code = generate_mock_source(script)
+	mock_script.reload()
+
+	return mock_script
+
+## Generate the source code for mocking a script
+func generate_mock_source(script: Script) -> String:
+	var mock_source := PackedStringArray()
+
+	mock_source.append("extends \"%s\"\n\n" % [script.resource_path])
+	mock_source.append("var __vest_mock_handler: VestMockHandler\n\n")
+
+	for method in script.get_script_method_list():
+		var method_name := method["name"] as String
+		var method_args = method["args"]
+
+		if method_name.begins_with("@"):
+			# Getter or setter, don't generate as method
+			continue
+
+		var arg_defs := []
+
+		for arg in method_args:
+			var arg_name = arg["name"]
+			arg_defs.append(arg_name)
+
+		var arg_def_string := ", ".join(arg_defs)
+
+		mock_source.append(
+			("func %s(%s):\n" +
+			"\treturn __vest_mock_handler._handle(self.%s, [%s])\n\n") %
+			[method_name, arg_def_string, method_name, arg_def_string]
+		)
+
+	return "".join(mock_source)