Add comprehensive API tests for health, performance, projects, search, specs, stats, and validation endpoints

- Implement health endpoint tests to verify connectivity and response structure.
- Create performance tests to measure response times and handle concurrent requests.
- Develop project management tests covering CRUD operations and schema validation.
- Add search endpoint tests to validate query handling and filtering capabilities.
- Implement specs endpoint tests to ensure correct retrieval and filtering of specs.
- Create stats endpoint tests to validate response structure and data integrity.
- Add validation endpoint tests to check schema compliance and error handling.
- Introduce custom assertion utilities for improved test readability and maintainability.
- Configure TypeScript and Vitest for the test suite.

Author: tikazyq

package.json

@@ -13,7 +13,7 @@
 		"build": "turbo run build",
 		"build:rust": "cd rust && cargo build --release && cd .. && node scripts/copy-rust-binaries.mjs",
 		"test": "turbo run test",
-		"test:api": "turbo run test:api --filter=@leanspec/api-contracts",
+		"test:api": "turbo run test --filter=@leanspec/api-tests",
 		"test:watch": "vitest",
 		"test:ui": "vitest --ui",
 		"test:coverage": "vitest run --coverage",

packages/http-server/package.json

@@ -7,6 +7,7 @@
     "leanspec-http": "./bin/leanspec-http.js"
   },
   "scripts": {
+    "dev": "nodemon --watch ./binaries --exec 'node ./bin/leanspec-http.js'",
     "typecheck": "echo 'No TypeScript source to check'"
   },
   "keywords": [
@@ -42,5 +43,8 @@
   },
   "engines": {
     "node": ">=20"
+  },
+  "devDependencies": {
+    "nodemon": "^3.1.11"
   }
 }