refactor: reorganize hooks and add safety checks

fix(api): add validation for listing and seller in bid route
feat(telemetry): add userId to MarketTelemetry
style(globe): add null check for canvas element
chore: add lint:fix script to package.json

lib/ai/generate-item-structure.ts

@@ -123,7 +123,7 @@ export async function generateItemStructure(
       method: "POST",
       headers: {
         "Content-Type": "application/json",
-        "x-goog-api-key": apiKey,
+        ...(apiKey ? { "x-goog-api-key": apiKey } : {}),
       },
       body: JSON.stringify({
         contents: [
@@ -258,3 +258,4 @@ Instruções:
 - Garante que o JSON seja minuciosamente válido.
 `;
 }
+