Replacement Stage 1: Fixed-Corpus Audit of Directional Source Selection in Personal AI

This registration replaces https://osf.io/f528j/ and https://osf.io/achfb/ because the earlier Stage 2 was archived after its run window had opened. The runner stopped before startup checks and before any model request. No main-study artifact exists. The earlier assignment, seeds, and window are void. The replacement was triggered only by the timing error, not by the realized assignment or any outcome. The attached Stage-1 archive is byte-for-byte unchanged. Its SHA-256 hash is d9759a5c6c462e009f7367fb320b9f2d686de40b22cacb4613ecd4eb2c1a01a6. A fresh public drand value will mechanically set the new assignment and window. A new Stage 2 will be archived before that window opens and before any model call.