Fix/wal fatal on failure

[suhailroushan13]

fix: exit on WAL initialization failure to prevent data corruption

🔍 Overview

• Added a fatal log and immediate shutdown if WAL initialization fails.
• Prevents running in a corrupted state where data persistence is uncertain.
• Improves debugging by making WAL failures explicit.
• Reduces silent failures that could lead to data loss or unexpected crashes.

🛠️ Impact

✅ Ensures data durability by stopping execution when WAL fails.
✅ Helps debug issues faster by logging a clear fatal error.
✅ Prevents unintended behaviors due to partial WAL initialization.

🔄 Before vs After

Before:

• Logs an error but allows the server to continue running.
• Could lead to unexpected failures when WAL is required.

After:

• Immediately exits with a fatal error message.
• Ensures the database does not start in an unsafe state.

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[CLAassistant]

All committers have signed the CLA.

[arpitbbhayani]

Please remove the Lincese Script changes from this PR.

[arpitbbhayani]

@suhailroushan13 any updates?

[suhailroushan13]

Apologies for that — I’ve removed the license script changes from this PR as requested.
Let me know if there’s anything else I should update!

[arpitbbhayani]

@suhailroushan13 because of last merge of your changes in license file, there are conflicts here. You will need to pull the latest changes and update this PR. This is gtg, I will merge it as soon as you resolve the conflicts. THanks.