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>

examples/forest-brawl/scripts/score-screen.gd

@@ -0,0 +1,56 @@
+extends Control
+class_name ScoreScreen
+
+@export var messages: PackedStringArray
+@export var message_label: Label
+@export var names_column: Control
+@export var scores_column: Control
+@export var fade_time: float = 0.2
+
+var active: bool = false
+
+func render(scores: Dictionary):
+	clear()
+	
+	if not visible:
+		message_label.text = messages[randi() % messages.size()]
+	
+	for player_name in _sort_scores(scores):
+		var points = scores[player_name]
+		names_column.add_child(_make_label(str(player_name)))
+		scores_column.add_child(_make_label(str(points)))
+
+func clear():
+	for child in names_column.get_children() + scores_column.get_children():
+		child.queue_free()
+
+func _ready():
+	modulate.a = 0
+	visible = false
+
+func _process(delta):
+	var current = modulate.a
+	var target = 1.0 if active else 0.0
+	modulate.a = move_toward(current, target, delta / fade_time)
+	
+	visible = false if modulate.a < 0.05 else true
+
+func _make_label(text: String) -> Label:
+	var label = Label.new()
+	label.text = text
+	label.size_flags_horizontal = SIZE_FILL
+	label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+	return label
+
+func _sort_scores(scores: Dictionary) -> Array[String]:
+	var result: Array[String] = []
+	var points = scores.values()
+	points.sort()
+	points.reverse()
+	
+	for score in points:
+		for player_name in scores:
+			if not result.has(player_name) and scores[player_name] == score:
+				result.push_back(player_name)
+	
+	return result