feat: initial project structure and generate API types

Initialized `package.json`, add tsup build config (CJS/ESM/DTS), wire up
full Makefile targets (lint/test/check/build), add missing BadRequest
response component to OpenAPI spec, generate TypeScript types from spec,
configure biome to exclude generated files, and add `@types/ws`

package.json

@@ -0,0 +1,44 @@
+{
+	"name": "js-sdk",
+	"version": "0.1.0",
+	"description": "Wrenn JavaScript SDK — a client library for the Wrenn microVM platform.",
+	"type": "module",
+	"main": "./dist/cjs/index.js",
+	"module": "./dist/esm/index.js",
+	"types": "./dist/dts/index.d.ts",
+	"exports": {
+		".": {
+			"types": "./dist/dts/index.d.ts",
+			"import": "./dist/esm/index.js",
+			"require": "./dist/cjs/index.js"
+		}
+	},
+	"scripts": {
+		"build": "tsup",
+		"check": "make lint && make test",
+		"test": "vitest run",
+		"lint": "make lint",
+		"test:watch": "vitest",
+		"test:integration": "vitest run --config vitest.integration.config.ts",
+		"generate": "openapi-typescript api/openapi.yaml --output src/models/generated.ts",
+		"format": "biome format --write ."
+	},
+	"keywords": [],
+	"author": "",
+	"license": "ISC",
+	"packageManager": "pnpm@10.26.1",
+	"devDependencies": {
+		"@biomejs/biome": "^2.4.14",
+		"@types/node": "^25.6.0",
+		"@types/ws": "^8.18.1",
+		"msw": "^2.14.3",
+		"openapi-typescript": "^7.13.0",
+		"tsup": "^8.5.1",
+		"typescript": "^6.0.3",
+		"vitest": "^4.1.5"
+	},
+	"dependencies": {
+		"ws": "^8.20.0",
+		"zod": "^4.4.3"
+	}
+}