Add package-level documentation (doc.go) to all 22 first-party packages and godoc comments to ~150 previously undocumented exported symbols across common/, network/, and server/.
handlers_guild.go was 2090 lines mixing unrelated guild subsystems. Extract handlers into focused files following the existing pattern: - handlers_guild_ops.go: OperateGuild switch + member operations - handlers_guild_info.go: InfoGuild + EnumerateGuild display - handlers_guild_mission.go: guild mission system - handlers_guild_cooking.go: meals, weekly bonus, hunt data - handlers_guild_board.go: message board system Core types, methods, and DB functions remain in handlers_guild.go (now ~1000 lines).
