core-staff/docs

Staff Docs

1. 01_Overview.md - architecture and pieces
2. 02_Configuration.md - config.json + permission groups
3. 03_Commands.md - every command, syntax, behavior
4. 04_Schema.md - MySQL tables
5. 05_Cross_Server_Propagation.md - how bans/mutes propagate
6. 06_Operations.md - ops scenarios, debugging