itemmaxleveloffset.dbss
Physical layout, representation confidence, semantic evidence, and exact BSD snapshot parity for the item maximum-level pointer directory.
Investigation status
| Status | Value |
|---|---|
| Coverage | 100% |
| Iteration | 3 |
| Review state | BSD migration reconciled |
| Last reviewed | 2026-07-31 |
| Captures examined | Build 2938; pad00000.meta SHA-256 b7eefe6059818f84c0545f10020fe93bd3bd5d0647e043120caf78726ccafe8f; archive entry hash 3000209352; 350,468-byte primary SHA-256 3db73d0f878b7f4d8a1dfe0fc98a15b65e52aee84280d70d7b3d4ed1555d7841; 29,204 rows; normalized SHA-256 331c51cc343888f7fcb6cd34c803b8bab304000affe0b64f067d4eef26d567cf |
| Decoder | packages/scraper/src/tables/itemmaxleveloffset.dbss.ts |
| Remaining blockers | None |
See Decoder methodology for the confidence scale and evidence rules.
Field ledger
| Field/path | Offset and width | Representation | Claimed meaning | Physical confidence | Representation confidence | Semantic confidence | Evidence | Status |
|---|---|---|---|---|---|---|---|---|
| PABR magic | file +0, 4 |
byte signature validated and omitted with bytes(4).reserved() |
table framing | Certain | Certain | Certain | Strict schema requires PABR before the row count |
Closed |
| Table row count | file +4, 4 |
u32 count consumed by array; rows retained in directory order |
pointer-row framing | Certain | Certain | Certain | Count 29,204; twelve-byte rows end exactly at footer offset 350,456 | Closed |
rows[].itemId |
row +0, 4 |
u32 retained |
pointed item identifier | Certain | Certain | Certain | All keys resolve to the identically keyed maximum-level row | Closed |
rows[].offset |
row +4, 4 |
u32 retained |
absolute five-byte data-row start | Certain | Certain | Certain | Every value equals 8 + physicalIndex × 5 for its keyed payload row |
Closed |
rows[].reserved08 |
row +8, 4 |
bytes(4).reserved() consumed and omitted without value validation |
reserved row trailer | Certain | Certain | Unknown | Exact fixed-width position retained in the schema | Closed neutral |
footer.reserved00 |
footer +0, 4 |
bytes(4).reserved() consumed and omitted without value validation |
reserved footer capacity | Certain | Certain | Unknown | Fixed footer position after all pointers | Closed neutral |
footer.footerOffset |
footer +4, 4 |
informational u32 retained |
absolute footer start | Certain | Certain | Certain | Stored value is 350,456; production does not enforce the relationship | Closed |
footer.reserved08 |
footer +8, 4 |
bytes(4).reserved() consumed and omitted without value validation |
reserved footer trailer | Certain | Certain | Unknown | Strict decode consumes the terminal range and ends at byte 350,468 | Closed neutral |
Active assumptions
Findings
| ID | Finding | Evidence | Schema/documentation impact | Status |
|---|---|---|---|---|
| IMLO-01 | The final row word is a reserved byte range rather than a returned numeric field. | It has no required semantic role in resolving any of the 29,204 pointers. | The BSD schema consumes it with bytes(4).reserved() and makes no value claim. |
Closed |
| IMLO-02 | The migrated BSD output is exactly reference-equivalent after retaining the informational footer pointer. | Full directory-order comparison matched 29,204 rows and footer offset 350,456 with digest 331c51cc343888f7fcb6cd34c803b8bab304000affe0b64f067d4eef26d567cf. |
Footer pointer is added to the transformed oracle rather than removed from BSD output. | Closed |
| IMLO-03 | Every pointer resolves one fixed-width payload row. | Zero key or offset mismatches against all 29,204 itemmaxlevel.dbss rows. |
The directory remains useful evidence but is not a payload-decoder dependency. | Closed |