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.

package.json

@@ -0,0 +1,27 @@
+{
+  "name": "psxbase",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "license": "MIT",
+  "description": "PSX Adventure Engine — browser reference engine for PSX-era third-person adventure (fixed cameras, inventory, P2P co-op)",
+  "engines": {
+    "node": ">=20"
+  },
+  "packageManager": "pnpm@10.14.0",
+  "scripts": {
+    "dev": "pnpm --filter @psx/client dev",
+    "dev:server": "pnpm --filter @psx/server dev",
+    "build": "pnpm -r build",
+    "test": "pnpm -r test",
+    "typecheck": "pnpm -r typecheck",
+    "preview": "pnpm --filter @psx/tools preview",
+    "harness": "pnpm --filter @psx/tools harness",
+    "cast": "pnpm --filter @psx/tools cast",
+    "creator": "pnpm --filter @psx/tools creator",
+    "creator:ui": "pnpm --filter @psx/tools creator:ui"
+  },
+  "devDependencies": {
+    "typescript": "^5.9.3"
+  }
+}