How secure is the hashing salting and stretching process in this diagram

Question

Looking at this diagram, I want to evaluate whether the approach used for hashing, salting, and stretching passwords is secure against modern attack methods.

• Is the salt generated correctly and stored securely?
• Does the stretching process (iterations) provide enough resistance to brute force attacks?
• Are there any vulnerabilities in this specific implementation that could weaken the security?

Would love to hear thoughts on best practices or potential improvements.