AdvancementRow
One row of the SRD Character Advancement table: the CUMULATIVE experience needed to REACH level. The engine mirrors these thresholds as a const (advancement::ADVANCEMENT_XP) and a lock test asserts the two agree (the skills pattern — the moddable authority is this file, the rules constant is the mirror). The Proficiency Bonus column is not carried: PB DERIVES from level (data/README.md "Derivations").
| Field | Type | Required | Description |
|---|---|---|---|
| level | uint32 | required | The character level this row's threshold reaches. |
| xp | uint32 | required | Cumulative XP needed to REACH |