Remove SAPCONTROL_PATH and HDBSQL_PATH variables from configuration.
Update scripts to rely on the system PATH environment variable when
executing as the <sid>adm user. Remove redundant existence checks for
these commands.
- Replace state-based notifications with direct alert functions
- Remove auto-cleanup functionality from disk monitoring and configuration
- Simplify lock acquisition/release across all monitoring scripts
- Add execute_hana_sql helper functions for consistent SQL execution
- Remove state file tracking in favor of direct file operations
- Standardize error handling with exit codes on critical failures
- Clean up hana.conf by removing unused auto-delete directory settings
