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>

docs/made-with-netfox.md

@@ -0,0 +1,78 @@
+# Made with netfox
+
+## Bubble Battle
+
+<a href="https://store.steampowered.com/app/3180520/Bubble_Battle/" markdown>
+![Bubble Battle](./assets/showcase/bubble-battle.jpg)
+</a>
+
+Bubble Battle is a retro online/local multiplayer fighting game inspired by
+arcade classics. Players fly around with one simple objective: burst opponents’
+bubbles before they burst yours. Collect powerups and out-maneuver opponents
+for fast-paced, addictive fun!
+
+[:simple-steam: Steam](https://store.steampowered.com/app/3180520/Bubble_Battle/)
+
+## PL4no-B
+
+<a href="https://store.steampowered.com/app/3423700/PL4noB/" markdown>
+![PL4no-B](./assets/showcase/pl4nob.jpg)
+</a>
+
+The best and most modern 2D tactical shooter, inspired by Counter-Strike and
+Hotline Miami. Play online with friends or meet new ones in diverse game modes.
+Unlock a huge variety of guns and utilities, earn points to build your base,
+unlock features, and invade other players’ bases for endless fun! 
+
+[:simple-steam: Steam](https://store.steampowered.com/app/3423700/PL4noB/)
+
+## Chrome Carnage
+
+<a href="https://store.steampowered.com/app/3204000/Chrome_Carnage/">
+![Chrome Carnage](./assets/showcase/chrome-carnage.jpg)
+</a>
+
+Machines took all jobs but one - urban blood sport. Chrome Carnage is a
+multiplayer top down shooter set in vibrant chaotic cyberpunk cities. 
+
+*Chrome Carnage* is a top-down shooter drenched in the glow of cyberpunk
+dystopia, where hope is scarcer than a working vending machine. Rising sea
+levels have forced humanity into overcrowded platform cities.
+
+With everyone on basic welfare a mysterious underground app has the desperate
+masses hooked: win brutal street tournaments, score hectic amounts of crypto,
+and maybe—just maybe—eat something that doesn’t squeak.
+
+[:simple-steam: Steam](https://store.steampowered.com/app/3204000/Chrome_Carnage/)
+
+## Nitro Turtles
+
+<a href="https://store.steampowered.com/app/3952070/Nitro_Turtles/" markdown>
+![Nitro Turtles](./assets/showcase/nitro-turtles.jpg)
+</a>
+
+Nitro Turtles is a racing game about super fast turtles! Reach insane speeds
+with awesome shell-attached gadgets, compete in crazy races with friends, and
+sprint across the finish line to claim ultimate turtle victory! To be the
+fastest turtle around, you'll need to master shell gadget usage, learn every
+shortcut imaginable, and maybe even consider using performance-enhancing
+seaweed\*.
+
+!!!note
+    Performance-enhancing seaweed has not been tested for safety and likely has
+    numerous side effects
+
+[:simple-steam: Steam](https://store.steampowered.com/app/3952070/Nitro_Turtles/)
+
+## Your game here!
+
+Building something cool with *netfox*? Whether it's a game, an app, tool, or
+anything else, we'd be happy to showcase it!
+
+Reach out on [Github discussions], on [Discord], or in the comments at the
+bottom of this page.
+
+
+[Github discussions]: https://github.com/foxssake/netfox/discussions/207
+[Discord]: https://discord.gg/xWGh4GskG5
+