IO Terminal Current HEAD Audit Repair
Overall result
FAIL — baseline materialization guard failed and concurrent revision movement resumed; zero terminal writes performed.
Retry scope and requested invariants
- Project:
silicon-yard/xcku5p-2ffvb676i
- Part UID:
4df57091-77f5-4686-b524-a64180aff8a6
- Retry started from freshly observed CURRENT HEAD
#a74957e4 at 2026-08-05T18:26:37.989Z.
- Exactly 676 terminal components were required in the fresh baseline.
- Exactly 280 case-sensitive designators beginning
IO_ were required as targets; 396 terminals were required as non-targets.
- Permitted target fields recovered from the existing current-project audit specification:
Terminal Order, Pin Group, Section, Pin Orientation, Pin Description, Pin Type.
- Intended order/rank rule: parse BGA Pin Number as Excel-style row letters plus numeric column, map A=1..Z=26, AA=27..., sort by
(rowOrdinal, numericColumn, full case-sensitive designator), then rank targets 1..280.
- All other target properties and every property of all 396 non-target terminals were preservation-critical.
Fresh baseline evidence
- Fresh full schematic read reported
totalComponents=676, all under part name Terminal; the response returned only the first 100 records and was truncated by the service.
- Fresh case-sensitive
filter_prefix="IO_" summary reported exactly totalComponents=280, all Terminal, Functional Group User I/O.
- Derived non-target count:
676 - 280 = 396.
- The exact-count gate passed: 676 total / 280 targets / 396 non-targets.
- However, the required complete property map for all 676 terminals was not materialized: only 100 detailed records were returned before truncation. Therefore the retry could not establish a complete per-property preservation baseline for 576 terminals and could not safely enter the write stage.
Concurrency/revision accounting
- Baseline HEAD:
#a74957e4, rewriteComponentProperties, 2026-08-05T18:26:37.989Z.
- A fresh history query after the baseline, using
after_timestamp=1785954397989, returned zero commits.
- The first post-baseline history check returned zero commits, but the final verification history read then found new external
rewriteComponentProperties commits: #fd3e0ffd at 2026-08-05T18:27:48.200Z, #ec4f9e80 at 2026-08-05T18:27:54.121Z, and #397ca495 at 2026-08-05T18:28:20.429Z.
- CURRENT HEAD therefore moved after the captured baseline and during report verification. Preservation proof became independently impossible for this reason as well. No terminal writes were issued before or after detecting movement.
- Recent pre-baseline history contained multiple component-property writers, including
#49e5673b, #7a62e4b7, #cc3da5b2, #d9771eb4, #33118e76, #e55dc774, #7d5088f0, and #cd8d4dfc; this reinforced the requirement not to infer missing baseline rows from earlier reports.
Guard decision
Although the 280-target gate passed, the user also required a fresh baseline of every property on exactly 676 terminals and a final exhaustive preservation proof against that retry-specific baseline. The service-truncated detailed read did not provide that baseline. Proceeding would make preservation proof impossible. Per the safety instruction, no unsafe terminal writes were attempted.
Operation and field log
- Read existing report to recover requirements: success.
- Read current-project recovery audit to recover the exact six permitted fields: success.
- Fresh history baseline: success; HEAD
#a74957e4.
- Fresh detailed schematic read: partial materialization; declared 676, returned first 100, service-truncated.
- Fresh exact
IO_ target gate: success; 280.
- Fresh non-target count derivation: success; 396.
- Post-baseline history check: success; zero newer commits observed.
- Initial terminal mutation batches (maximum 15): none.
- Split retries: none.
- Per-terminal fallback operations: none.
- Terminal field writes by field: Terminal Order 0; Pin Group 0; Section 0; Pin Orientation 0; Pin Description 0; Pin Type 0.
- Project-file write: one replacement/update of this report.
- Final history verification: FAIL — external terminal-property movement detected (
#fd3e0ffd, #ec4f9e80, #397ca495).
- Unsafe further terminal work: stopped; none attempted.
Counts
- Total terminals declared by fresh read: 676
- Detailed terminal baselines materialized in the returned payload: 100
- Detailed terminal baselines not materialized: 576
- Exact case-sensitive
IO_ targets: 280
- Non-targets: 396
- Target terminals pre-read immediately before write: 0 (write stage never opened)
- Target terminals written: 0
- Target fields written: 0
- Non-target terminals written: 0
- Out-of-scope properties written: 0
- Initial batches: 0
- Split retries: 0
- Per-terminal fallbacks: 0
First/last 10 ranked-target evidence
Unavailable and not fabricated. A truthful first/last-10 table requires complete fresh target Pin Number materialization and deterministic ranking of all 280 targets. The summary gate returned designators but not complete Pin Number/property records, while the detailed baseline was truncated. Ranking from prior baseline data was explicitly forbidden.
Final comparison and discrepancies
- Required final fresh exhaustive comparison: not performed because no terminal write stage occurred and the retry-specific 676-row property baseline was incomplete.
- Six-field correctness across 280 targets: not certified.
- Preservation of all other target properties: not certified against a complete baseline.
- Preservation of all 396 non-targets: this retry issued zero non-target writes, but exhaustive equality against a complete retry baseline cannot be certified because that baseline was not fully materialized.
- Discrepancy: the exact count gate passed, but the all-property baseline guard failed.
- Discrepancy: concurrent terminal-property revisions resumed after the initial no-new-commit check, invalidating the captured CURRENT HEAD baseline.
- Safety outcome: zero terminal mutations, so this retry itself introduced no terminal-property deltas.
Item status
- Fresh-read and baseline every property on 676 terminals: FAILED — response materialized 100/676 detailed rows.
- Gate exactly 280 case-sensitive
IO_ targets: COMPLETED — 280 targets, 396 non-targets.
- Rank by exact Excel-style BGA Pin Number rule: UNATTEMPTED — blocked by incomplete fresh target Pin Number baseline.
- Apply six desired fields only to mismatches: UNATTEMPTED — safety guard stopped writes.
- Sequential batches <=15 with split/per-terminal fallback logging: UNATTEMPTED — no writes entered.
- Final exhaustive comparison and preservation proof: FAILED — complete retry baseline unavailable.
- Update required project file: COMPLETED — this report replaced under slug
io-terminal-current-head-audit-repair with exact first H1.