Document compatibility flags comprehensively

All compatibility flags must include comprehensive documentation that clearly explains their purpose, behavior, timing, and relationships with other flags. This documentation should follow a consistent format and provide sufficient context for developers to understand the flag’s impact.

Required documentation elements:

• Clear description of what the flag enables or disables
• Explanation of when the flag takes effect (dates, conditions)
• Relationships with other flags (mutual exclusivity, dependencies, implications)
• Impact on existing functionality and backward compatibility

Example of proper flag documentation:

removeNodejsCompatEOLv22 @117 :Bool
    $compatEnableFlag("remove_nodejs_compat_eol_v22")
    $compatDisableFlag("add_nodejs_compat_eol_v22")
    $impliedByAfterDate(name = "removeNodejsCompatEOL", date = "2027-04-30");
# Removes APIs that reached end-of-life in Node.js 22.x. When using the
# removeNodejsCompatEOL flag, this will default enable on/after 2027-04-30.

For complex flag relationships, document dependencies explicitly:

# Requires both "enable_nodejs_http_modules" and "enable_nodejs_http_server_modules"
# to be enabled. The type stripping flag is mutually exclusive and will take 
# precedence if both happen to be defined.

This ensures developers understand flag behavior, prevents configuration errors, and maintains consistency across the codebase.