Initial public release of PSX Adventure Engine

Browser reference stack for PSX-era third-person adventure: fixed cameras,
inventory puzzles, Box3D physics, host-authoritative P2P co-op, and a modular
character harness. Ships the Ashgrove Precinct Level 1 investigation demo with
a full cast and nine linked rooms.

client/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "jsx": "preserve",
+    "jsxImportSource": "solid-js",
+    "types": ["vite/client"]
+  },
+  "include": ["src/**/*.ts", "src/**/*.tsx", "vite.config.ts"]
+}