Document log source profiling and logstat workflow
Document crash logging and fatal path separation
Document fatal handling and glog compatibility
document file backend lifecycle in wiki
add CollapseEvery / CollapseIgnoreEvery
document environment control and fix control API wiki gaps
Clarify Collapse behavior and non-consecutive repeat handling in wiki
Document Collapse logging macros and missing backend features in wiki
add new backends description
Improve feature discoverability documentation and add capability mapping