Update circuit-shotting artifact index for issue 43

README.md

@@ -18,6 +18,29 @@ The Git repo keeps source code, configs, lightweight reports, and current narrat
 <!-- circuit-shotting-backup-index:start -->
 ## Artifact and Backup Locations
 
+
+### Issue 43 XCOMET Destructive MLP 95% Gate - 2026-05-18
+
+- Primary backup bundle: `circuit-shotting/artifacts/xcomet_destructive_mlp_95/issue43_xcomet_destructive_mlp_95_20260518T145643Z`
+- Mirror bundle: `TokenBender/synth-data-en-pt-circuit` (`dataset`) at `issue43_xcomet_destructive_mlp_95_20260518T145643Z`
+- Source repo/branch/commit: `Occupying-Mars/circuit-shotting`, `tokenbender_experiments`, `038f04f`
+- Pod/run root: `brave-hawk-1c`, `/root/runs/issue43_xcomet_destructive_mlp_95_038f04f`
+- Model/task: `tencent/HY-MT1.5-1.8B`, EN->PT translation
+- Held-out eval: NTREX EN->PT, 1,012 rows
+- Judge: `Unbabel/XCOMET-XXL` via four local RTX 6000 Ada service workers
+- Method: restore #42 ranked 100x1%ile MLP dust damage rows; build cumulative flat percentile candidates `topN in {10,15,20,30,40,50}`; nuke each candidate inside the full HY-MT model; generate NTREX hypotheses; score each candidate with XCOMET-XXL.
+- Gate: target recovery `<= 0.05`, where recovery is `candidate_XCOMET / no_mask_XCOMET`.
+- Prior floor: #39 `final_mix_top_3`, 5,898 channels (~3%), XCOMET recovery `0.15275785974445857`, destruction `0.8472421402555415`.
+- No-mask XCOMET: `0.9281014436671856`
+- Candidate XCOMET table:
+  - `percentile_top_10`: 19,660 channels, XCOMET `0.18256553325603309`, recovery `0.19670859742946434`, destruction `0.8032914025705357`
+  - `percentile_top_15`: 29,491 channels, XCOMET `0.2529226868034234`, recovery `0.27251620879292665`, destruction `0.7274837912070733`
+  - `percentile_top_20`: 39,321 channels, XCOMET `0.19338692443559438`, recovery `0.2083683047312901`, destruction `0.7916316952687099`
+  - `percentile_top_30`: 58,982 channels, XCOMET `0.189112861187974`, recovery `0.20376313653897224`, destruction `0.7962368634610277`
+  - `percentile_top_40`: 78,643 channels, XCOMET `0.2072743144836056`, recovery `0.22333152900248426`, destruction `0.7766684709975158`
+  - `percentile_top_50`: 98,304 channels, XCOMET `0.2053742483847226`, recovery `0.2212842677770569`, destruction `0.7787157322229431`
+- Outcome: no candidate reached the 95% destructive gate, and none beat the #39 3% destructive floor. The flat whole-model percentile ranking should be treated as a negative result; the next mining frontier should recurse inside the #39 mined region instead of scaling flat percentile unions.
+
 ### Issue 42 Top-20 Destructive MLP 1%ile Proxy Search - 2026-05-18
 
 - Primary backup bundle: `circuit-shotting/artifacts/percentile_proxy/issue42_percentile_proxy_20260518T110628Z`