• Rename user to username.
• Update default user to clp-user in template credentials.

Description

This PR introduces a BREAKING change: database and redis usernames must now be configured under the username fields in etc/credentials.yml within the CLP package. e.g.,

etc/credentials.yml:

# Database credentials
database:
  # OLD
  # user: "user"
  # NEW
  username: "clp-user"
  ...

# Queue credentials
queue:
  # OLD
  # user: "user"
  # NEW
  username: "clp-user"
  ...

...

The PR fixes inconsistency where credential key names and default values differed between the template file, Pydantic config objects, and auto-generated credentials. All components now consistently use username as the key name with clp-user as the default value.

Changes:

• Updated credentials.template.yml to show username: "clp-user" (instead of user: "user")
• Modified clp_config.py to read database.username and queue.username from YAML
• Updated general.py to generate credentials with username keys and clp-user as default
• Fixed Presto deployment script to read database.username and renamed variable to database_username

Checklist

• The PR satisfies the contribution guidelines.
• This is a breaking change and that has been indicated in the PR title, OR this isn't a
  breaking change.
• Necessary docs have been updated, OR no docs need to be updated.

Validation performed

• Verified all credential loading code now reads username keys
• Confirmed template default values (clp-user) match auto-generated credentials
• Checked documentation (already showed correct username: "clp-user" format)
• Searched codebase for remaining references to old user key format

task
cd build/clp-package
./sbin/start-clp.sh
./sbin/compress.sh ~/samples/postgresql.jsonl
# observed no error

Summary by CodeRabbit

Release Notes

• Bug Fixes
  • Updated credential key naming from "user" to "username" for database and queue components to ensure consistent credential handling across the system. Configuration templates and credential loading have been updated accordingly.