# 490d C348 — Exact phases of the598 to600 source repairs

24 September 2026. Step 5 of 10 in the C344–C353 authorization.

**Only matching inherited components realize the primary600 repairs. No existing component choice repairs the599 companion case.**

The check covers both held-endpoint choices, four C287 paths, and every assignment of the existing±1/4 components to the two inputs and target:64 controls. Eight pass—the two primary paths, two held-endpoint choices and two matching components. All companion cases fail.

For the primary path, a center-fixed300/299 affine expression changes the target component offsets by±1/1196. It expands the half-year separation between components by1/598. As with E in C341, preserving the stored pair components requires componentwise or center/phase bookkeeping; one physical-time affine dilation does not preserve the pair as given.

The companion mismatch601+1/299 remains exact. Neither seasonal reassignment nor rounding is used to turn it into the actual same-Gear close interval601. These fractions are coordinate diagnostics, not Residue Protocol quantities.

With source roles, biography effects and phases settled, the next useful step is a small map of exactly which retained endpoints each comparison expression reaches. This can expose the available partial structure without extending it to unrelated source records.

## Verification and limits

75 main checks and 15 frozen-input/predecessor authentication checks passed. A second main replay produced byte-identical DATA/RESULTS. These checks and the source interpretation were performed by the root agent; no new independent-agent review is claimed. All frozen originals and standing controls remain unchanged. Verification counts are not independent-witness counts.

No new phases or fractional source records; no rounding or calendar-physics interpretation.

Mirror/529 focus: K=529, E=25/23, P=70/69. Global paired Mirror January AD1; local junction January AD2; no civil year zero. Regular Gears are Noah/Shem/Flood only. SP minus-one person companions remain local to SP Noah/Shem; Flood close is a separate boundary. No upstream/cumulative Gear, new endpoint or phase, fitted anchor, global axis, primer reopening, canonical or graph edit. Capture now; canonize later. Source identity, context, modal binding, generated coordinates and phase ancestry stay distinct.

## Decision after this result

**C349, proposed and unexecuted:** Build the finite endpoint relation table for E and the two300/299 held-endpoint expressions, plus their inverses, on the already used primary Noah/Shem/Flood records. Record only exact source matches and identify the longest supported paths without adding endpoints.

All local numerical ambiguities are closed. A bounded relation table can now show the actual source-preserving structure and its closure limits.