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.

tests/stock-db.spec.ts

@@ -13,6 +13,12 @@ test.describe("Stock Database", () => {
     const listRes = await page.request.get("/api/stocks");
     const stocks = await listRes.json();
     expect(stocks).toContainEqual(expect.objectContaining({ ticker: uniqueTicker }));
+    
+    // Cleanup: delete the test ticker
+    await page.request.post("/api/stocks", {
+      data: new URLSearchParams({ ticker: uniqueTicker, _method: "DELETE" }).toString(),
+      headers: { "Content-Type": "application/x-www-form-urlencoded" },
+    });
   });
 
   test("should delete stock from database", async ({ page }) => {