Log a debug message with category and optional data.
Format: [opencarl:debug] {timestamp} [{category}] {message} If data provided, appended as JSON on next line.
Zero overhead when debug disabled (early return).
Optional
Log a debug message with category and optional data.
Format: [opencarl:debug] {timestamp} [{category}] {message} If data provided, appended as JSON on next line.
Zero overhead when debug disabled (early return).