C53 — 6348 is the whole-year Aaron-side Shem member

22 September 2026 · Step 1 of the authorized ten-step Mirror continuation (C53–C62).

The two-year selection 6350→6348 is already present in the source's default cumulative week anatomy. It is the interval from the older envelope boundary to the ordinary whole-year Aaron-side member, not a new regular Gear assignment.

File_18 gives the native LXX cumulative Flood Moses line as 5745, with envelope 5750–5743. The retained Shem lifespan 600 gives the corresponding Shem Moses line 6345 and envelope 6350–6343. Applying File_09's controlled whole-year offsets +5,+3,0,−2 gives:

Thus 6348=12×529 is not merely an anonymous integer chosen from the eight-member field. It has a named role under an already controlled whole-year representation. This is a derived role identification from File_18's source values and File_09's generic cell; it is not a newly printed raw Shem row or a new Primary anchor.

The exact Aaron/Tishri branch remains 6348.5, obtained from 6345+3.5. File_09 explicitly retains both representations. Naming 6348 as the whole-year Aaron-side member does not round away 6348.5, identify it with a Day-4 node, or authorize using the integer Mirror width for every exact phase calculation.

The numeric reduction by two resembles the selected regular 600−2=598 comparison, but the operators remain distinct: here it is a cumulative envelope-member selection. The next step tracks their common length through actual cumulative endpoint pairs.

Validation. 7 exact arithmetic/structural checks passed. The 13 frozen dependencies passed hash verification; all three generated outputs replayed byte for byte in isolation, and the original dependencies remained unchanged. This step reads completed certificates and does not execute their campaigns.

Scope and provenance. Controlling File_18 and File_09 remain unchanged. Regular Gears apply only to Noah/Shem/Flood; SP person companions only to Noah/Shem. Creation and Conquest fields remain fixed. Native LXX ON, explicitly derived OFF, independent Flood start/close, and paired suffix inversion at January AD 1 remain in force. No civil year zero, upstream Gear transport, primers, Rounded campaign, or localized −33 is introduced. These are new continuation reports, not recovered historical Reports 11–25. Evidence is conditional on the supplied project model, not a proof of literary intention or independent historical dating.

Source locators. File_09 §0.4 rules 21–22 and the Creation Cell / Aaron Phase guard (week anatomy), §3 (paired Mirror); File_18 §§4.2 and 6A–6D (lifespans and cumulative fields); frozen C15/C16/C22 and C43/C46/C48/C50/C52 certificates (retained graph, unit, and domains).

Best next bounded step — High sufficient. Solve the cumulative OFF-Flood / ON-Shem member pairs that retain the 1058 difference.