itemimprovementsourceoffset.dbss
Physical layout, representation confidence, semantic evidence, and exact BSD snapshot parity for the improvement-source pointer directory.
Investigation status
| Status | Value |
|---|---|
| Coverage | 100% |
| Iteration | 2 |
| Review state | BSD migration reconciled |
| Last reviewed | 2026-07-31 |
| Captures examined | Build 2938; pad00000.meta SHA-256 b7eefe6059818f84c0545f10020fe93bd3bd5d0647e043120caf78726ccafe8f; archive entry hash 3292372340; 1,216-byte primary SHA-256 a0de22a3874e20b30d1d0836746165ea962d05a4a02d8e399d60c9e17b766af6; 101 rows; normalized SHA-256 1b4f986a9315ff99a0f5c0dea6dda9dbb4f71cc40f3d52c6e6b3353ba6ac474b |
| Decoder | packages/scraper/src/tables/itemimprovementsourceoffset.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 |
|---|---|---|---|---|---|---|---|---|
| Table row count | file +0, 4 |
u32 count consumed by array; rows retained in directory order |
pointer-row framing | Certain | Certain | Certain | Count 101 and fixed 12-byte rows close byte 1,216 | Closed |
rows[].sourceItemId |
row +0, 4 |
positive u32 retained |
pointed source-item identifier | Certain | Certain | High | Exhaustively matches the key immediately before each payload | Closed |
rows[].offset |
row +4, 4 |
u32 retained |
absolute payload start after the outer key | Certain | Certain | Certain | Every value equals the physical row start plus four | Closed |
rows[].byteLength |
row +8, 4 |
u32 retained |
payload width excluding outer key | Certain | Certain | Certain | Every current value is 38 and equals 18 + resultCount × 4 |
Closed |
Active assumptions
Findings
| ID | Finding | Evidence | Schema/documentation impact | Status |
|---|---|---|---|---|
| IISO-01 | Directory spans exclude exactly the four-byte outer source-item key. | All 101 spans align with the corresponding primary row and close byte 4,246. | Pointer semantics remain explicit, but the payload decoder does not depend on this table. | Closed |
| IISO-02 | The migrated BSD output is exactly reference-equivalent. | Full directory-order comparison matched 101 rows with digest 1b4f986a9315ff99a0f5c0dea6dda9dbb4f71cc40f3d52c6e6b3353ba6ac474b. |
Physical and representation confidence are Certain. | Closed |