feat(perception): publish immutable lab session instances

experiments/perception/LAB_E21_REPORT_2026-07-23.md

@@ -185,6 +185,35 @@ short nominal run, an intentional overload/backpressure run, disconnect/reconnec
 recovery, and then a longer soak. Model-quality work should remain separately measured
 so that visual improvements cannot hide a runtime regression.
 
+## Immutable Mission Core publication
+
+E21 is published as the separate saved-session instance
+`lab-e21-d0201712`, displayed as
+`LAB E21 · Real-time 1× · RTX 4090 · d0201712`. It does not replace the
+result bound to `RAVNOVES00`, and it coexists with the comparison baseline
+`lab-e19-36964643`.
+
+| Publication item | Value |
+| --- | --- |
+| LAB source session | `20260720T065719Z_viewer_live` |
+| Visual result | `e10-integrated-perception-d0ecafd5e56f8ef132b8cb88f45ec275aa17470c682c6cce7c08f5597bfd7bd6` |
+| Visual frames | 601 |
+| Worker result frames | 594 |
+| Explicit latest-wins replacement frames | 12, 239–242, 433, 498 |
+| SHA-matched semantic masks | 121 / 121 |
+| Accepted cuboids materialized | 881 |
+| Raw source payloads copied | no |
+| Source RRD storage | same inode through hard link |
+| Base replay readiness | 0.03 s observed |
+| Initial visual overlay publication | 111.47 s observed |
+| Warm visual overlay retrieval | 0.04 s observed |
+
+The 111.47-second step is viewer-container publication from already computed
+results, not detector, semantic or fusion inference. It is completed before
+operator handoff. Warm UI openings reuse the resulting 7.88 MB Rerun overlay.
+The base source remains the full 8:55.718 recording; E21 AI output covers the
+accepted 59.994-second envelope beginning at source camera time 35.421857 s.
+
 ## Evidence
 
 - Source report: `.runtime/compute-experiments/e21/20260723T155125Z-e21-source.json`