Initial MVP: drivable RX-7 vertical slice + server-authoritative systems

- Rojo + Wally project; ProfileStore (loleris) for safe saves
- Shared: GameConfig, Cars (RX-7 free starter), ProfileTemplate, Remotes
- Server: DataManager, Economy, CarManager, RaceManager, MapBuilder, AntiCheat
- Client: neon HUD + Garage/Dealership UI (buy/equip/upgrade), race/daily
- Procedural Tokyo expressway (spawn pad, finish line, neon pylons, kill walls)
- CI workflow (Gitea/GitHub), Makefile, selene+stylua clean, rojo builds
- Docs: README, GDD, realistic solo ROADMAP

src/shared/GameConfig.luau

@@ -0,0 +1,37 @@
+--!strict
+--[[
+	GameConfig.luau
+	Central tunable constants. Anything you might want to balance later lives here,
+	NOT hard-coded in systems. Single source of truth for numbers.
+]]
+
+local GameConfig = {}
+
+-- Economy -------------------------------------------------------------------
+GameConfig.StartingCash = 1500 -- enough to feel, not enough to skip the RX-7
+GameConfig.StartingRep = 0
+GameConfig.StartingCarId = "rx7_fc" -- the player's real 1993 Mazda RX-7
+
+-- Race rewards (flat MVP model; tune per-race later) -------------------------
+GameConfig.RaceBaseReward = 250
+GameConfig.RaceWinBonus = 400
+GameConfig.RaceRepReward = 15
+
+-- Daily login ----------------------------------------------------------------
+GameConfig.DailyRewardCash = 300
+GameConfig.DailyRewardRep = 10
+GameConfig.DailyCooldownSeconds = 20 * 60 * 60 -- 20h so a "daily" is reliably claimable each day
+
+-- Anti-cheat sanity bounds (server-side validation) --------------------------
+-- Max believable straight-line speed in studs/sec for the FASTEST car + boosts.
+-- Anything sustained above this => flagged. Generous to avoid false positives in MVP.
+GameConfig.MaxPlausibleSpeed = 400
+
+-- DataStore ------------------------------------------------------------------
+GameConfig.ProfileStoreName = "PlayerData_v1" -- bump the _vN to wipe/migrate in dev
+GameConfig.UseMockInStudio = true -- ProfileStore mock store when testing in Studio (no live DataStore)
+
+-- Autosave interval handled by ProfileStore internally; kept here for reference.
+GameConfig.SessionTag = "fnf-sim-mvp"
+
+return GameConfig