Added extensive logging to crypto.go to trace when the encryption key
migration code runs and when it deletes the key. This is to diagnose
a recurring bug where the encryption key mysteriously disappears.
The logs will show:
- When migration is being considered (dataDir != /etc/pulse)
- When migration is skipped (dataDir == /etc/pulse)
- CRITICAL log when key is about to be deleted
- CRITICAL log when key has been deleted
This will help identify whether it's the Go code or something external
deleting the key.
- crypto.go: Add runtime validation to Encrypt() that verifies the key file
still exists on disk before encrypting. If the key was deleted while Pulse
is running, encryption now fails with a clear error instead of creating
orphaned data that can never be decrypted.
- hot-dev.sh: Auto-generate encryption key for production data directory
(/etc/pulse) when HOT_DEV_USE_PROD_DATA=true and key is missing. This
prevents startup failures and ensures encrypted data can be created.
- Added test TestEncryptRefusesAfterKeyDeleted to verify the protection works.
