# 490d Mirror checkpoint after C294

24 September 2026. Latest completed: **C294 — Independent-source closure of the fixed reflection.**

The openings LXX ON Shem6350 and OFF Flood5290 translate by13K to527/1587. Fixed8K reflection gives admitted SP G1 companion Noah3705 and restored MT G1 Flood close2645. Both pair sums4232; source/regular side gaps1060=2K+2, matching cross-width8995=17K+2. This is not the all-K family.

## Standing context

C276: the selected cross-index alignment fixes δ=h−f=598; source transport alone does not. Absolute placement remains a separate premise. Preserve source and map roles, annual indices and ±1/4 phase ancestry. Co-located images do not identify events.

K=529; E=25/23; P=70/69. Global Mirror January AD 1; established local junction x=1, January AD 2; no civil year zero. Regular Gears Noah/Shem/Flood only. No cumulative/upstream Gears, primer reopening, canonical/graph changes or new global axis/z-law. Capture now, canonize later.

Supplement: LXX Creation 5494 BC +8464→AD 2970 versus reflected Conquest AD 1406 gives1564→1700 by25/23; Jared4534→AD3930 versus reflected Exodus1446 gives2484→2700. LXX Creation→Jared960, MT460; offsets1380/880; difference920→1000. AD3746/2300 superseded. Awareness only.

C-series reports remain distinct from original unprefixed Reports01–10 and unestablished interrupted Reports11–25. The superseded AD1905–1911 lookup remains unexecuted.

## Verification

8 mathematical/domain checks and 7 source authentication checks passed; two generated readouts replay byte identically. Author review only. File_18, File_09, C265 certificate and C127 unchanged; graph208 nodes/382 duration edges.

## Best next bounded step

C295: solve compatibility of fixed8K reflection with the all-K source subdivision, retaining the finite source domains.

Reason for selecting it after C294: Two positive but different configurations now exist; a constraint audit will prevent their properties from being combined as if they belonged to one source row.

High is sufficient unless a later dependency requires reassessment. The next step was not executed as part of C294. The authorized batch continues through C310.