refactor(auth-demo): modernize functions to v2 API

[inlined]

Security Audit & Remediation: auth-demo-functions

A. Previous CVEs

• None (modernization task)

B. Changes Made

• Migrated checkIfAuthenticated from Cloud Functions v1 to v2 API via require('firebase-functions/https')
• Updated database config initialization to admin.initializeApp()

C. Remaining CVEs

• 11 vulnerabilities (2 low, 9 moderate) caused transitively by uuid and @tootallnate/once.

D. Introduced CVEs

• None

E. Testing Strategy

• Ran node --check validation on the updated function file - 100% passing.

[changeset-bot]

⚠️ No Changeset found

Latest commit: f9d2af7

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[gemini-code-assist]

Code Review

This pull request updates the Firebase Cloud Functions in the auth demo to use the newer HTTPS trigger syntax and simplifies the initialization of the admin SDK. The reviewer identified an invalid import path for the onRequest trigger, which will cause a module resolution error and should be corrected to import from firebase-functions/v2/https.

[gemini-code-assist]

In Cloud Functions for Firebase v2, the correct import path for HTTPS triggers is firebase-functions/v2/https. Importing from firebase-functions/https is invalid and will result in a module resolution error (Cannot find module 'firebase-functions/https').

Suggested change

	const { onRequest } = require('firebase-functions/https');
	const { onRequest } = require('firebase-functions/v2/https');