feat(tests): update Alpaca API tests to include range parameters and improve stock database cleanup

- Modified Alpaca Historical Bars tests to include range parameters in API requests.
- Updated test descriptions for clarity.
- Added cleanup step to delete test ticker after verification in stock database tests.
- Adjusted Vitest configuration to exclude test files from coverage.

package.json

@@ -7,6 +7,8 @@
     "dev": "react-router dev",
     "start": "react-router-serve ./build/server/index.js",
     "test:e2e": "playwright test",
+    "test": "vitest run",
+    "test:watch": "vitest",
     "typecheck": "react-router typegen && tsc",
     "mcp:dev": "npx tsx mcp-server/index.ts",
     "mcp:build": "tsc -p mcp-server/tsconfig.json"