{"id": "c248", "title": "C248 — P6 gains a sourced 6875 close endpoint without repairing its 6877 gap", "filename": "490d_C248_529_Mirror_Bounded_Step_20260923.md", "role": "Research action", "step": 248, "sha256": "39a66c91f8e84824749b1c35db925c0e0b1f71aa67ab70c3dfe72fef4d3acc26", "bytes": 1871, "origins": ["C01–C479/reference/490d_C01_C265_Complete_Window_Archive_20260923.zip!/workspace/mirror_C206_C265_529_Expansion_Centers_20260923/C248/490d_C248_529_Mirror_Bounded_Step_20260923.md"], "download": "/sources/39a66c91f8e84824749b1c35db925c0e0b1f71aa67ab70c3dfe72fef4d3acc26.md", "format": "md", "derived": false, "tags": ["Regular", "Mirror / 529"], "excerpt": "C248 — P6 gains a sourced 6875 close endpoint without repairing its 6877 gap\n\n23 September 2026 · Step 43 of 60, continuing C205.\n\nP6 uses native Creation 4417t/4416n BC and Conquest mirror AD 1403t/1404n. Its twice-expanded 11-fold endpoint is AD 2459t/2460n, the ordinary MT G3 Flood close.\n\nThe original exact 13-fold", "content": "# C248 — P6 gains a sourced 6875 close endpoint without repairing its 6877 gap\n\n23 September 2026 · Step 43 of 60, continuing C205.\n\nP6 uses native Creation 4417t/4416n BC and Conquest mirror AD 1403t/1404n. Its twice-expanded 11-fold endpoint is AD 2459t/2460n, the ordinary MT G3 Flood close.\n\nThe original exact 13-fold requirement at this Creation member is AD 2461t/2462n, still absent. G3 Flood start at 2460 remains between the new 2459 close and the missing 2461 requirement. Thus the new endpoint supports a distinct 6875 interval; it does not repair the prior 6877 source failure, invent G4 or merge start and close states.\n\n## Evidence and scope\n\nK=529 and r=25/23. BC base B means (B+1)t/Bn BC; reflected AD base A means AD At/(A+1)n. Their civil span is B+A in both seasonal components, with no year zero. Signed paired centers are −B and +A; the center model uses components ±1/4 and restores this separation after dilation. An interval center is geometry, not an event or a proposed universal Mirror axis.\n\nRegular Gears are restricted to Noah/Shem/Flood. Creation and Conquest retain fixed source-field members; no fourth Gear is admitted. Generated coordinates, source-field membership and stored graph incidence are distinct. File_18/File_09 and the frozen C127 graph are unchanged. Earlier N01/N03 qualifications, the missing Shem join, closed primers and unestablished original Reports 11–25 remain unchanged. This packet selectively uses prior evidence; it does not rerun completed campaigns. Assertions and alternative placements are not independent historical witness counts.\n\n**5 step-specific checks and 19 frozen-input checks passed.** Exact inputs, results and predecessor hashes are in the accompanying JSON records; calculation code is in the evidence archive. Source dependencies are identified in the body and frozen in `sources/`.\n", "evidenceLinks": [{"id": "d-68301ab760bfbe2e", "title": "File 18"}, {"id": "d-45851004c5864229", "title": "File 09"}]}