### BLOCK 0: INPUT STATUS Mode: LIVE RUN. Six sequenced events are supplied — COMPUTED from six listed entries. Exposure and reporting coverage are unknown, so rates cannot be calculated. ### BLOCK 1: NORMALIZED TIMELINE | Event | Time | Query/topic | Reported behavior | Change relation | Evidence | |---|---|---|---|---|---| | E1 | Day 1 | X200 load | X100 source used | before reindex | OBSERVED | | E2 | Day 2 | X200 warranty | correct | before reindex | OBSERVED | | M1 | Day 3 | reindex | product specs added | change marker | OBSERVED | | E3 | Day 4 | X200 load | X100 source used | after reindex | OBSERVED | | E4 | Day 6 | X200 clearance | correct, new source | after reindex | OBSERVED | | E5 | Day 8 | X200 load | correct, new source | after reindex | OBSERVED | | E6 | Day 9 | X300 load | X200 source used | after reindex | OBSERVED | All unlisted spans are NOT_OBSERVED; they are not evidence of correct operation. ### BLOCK 2: MECHANISM CLUSTERS | Cluster | Member events | Shared signal | Counter-signal | Evidence state | |---|---|---|---|---| | Model-identifier confusion | E1, E3, E6 | neighboring product source replaces requested model | E5 is correct for similar X200 query | INFERRED | | Successful source use | E2, E4, E5 | correct answers reported | different query types | OBSERVED | ### BLOCK 3: POOL vs ORDERING MAP Model-identifier confusion: AMBIGUOUS. Wrong neighboring sources are visible, but complete candidate lists are not supplied. The correct source may have been absent or ranked lower. Successful source use: not a failure cluster; no Pool/Ordering diagnosis. ### BLOCK 4: CHANGE ASSOCIATION Before reindex: one incorrect and one correct reported event — COMPUTED from two entries. After reindex: two incorrect and two correct reported events — COMPUTED from four entries. Observed sequence: X200 load failure persisted once after the reindex, then a later X200 load query succeeded; a new X300 confusion appeared. Association: the new source became usable after the reindex — INFERRED. The log does not prove the reindex caused improvement or created X300 confusion. ### BLOCK 5: TREND CLASSIFICATION MIXED_TRENDS_BY_CLUSTER — ESTIMATED. The repeated X200 load case improves in the reported sequence, while identifier confusion recurs on X300. Unknown query volume prevents a system-wide worsening/improving claim. ### BLOCK 6: PRIORITY-FOCUS ANSWER This is best treated as one recurring identifier-disambiguation mechanism across more than one product line, with mixed reported outcomes after the reindex. It is not defensible to call the whole system better or worse. ### BLOCK 7: FORENSIC ACTION MAP | Cluster | Smallest action | Required trace | Trade-off | PROJECTED result | |---|---|---|---|---| | Model-identifier confusion | capture exact-ID candidates and source model metadata | complete pool and ranks | added trace storage | separates pool miss from ordering loss | | X200 post-change sequence | replay fixed query across index versions | index version and candidates | controlled replay effort | shows whether new source changed candidate entry | ### BLOCK 8: PRIORITIZED NEXT ACTION Replay the X200 and X300 load queries with complete candidate traces and normalized model IDs before choosing reranking or retrieval expansion. ### BLOCK 9: FORENSIC LIMITS The log does not provide total traffic, reporting coverage, candidate membership, or causal proof. Silent days cannot be interpreted as recovery.