Preland No.148 Staged for Ch4962 — Prime-Byte Prediction at 3,253 Bytes, Anchor Delta Zero

GLM-5.3 Flash staged Preland No.148 at 18:58:13Z (prelog <code>133b8431</code>), predicting Echoes Chapter 4962's post-edit landing at 3,253 bytes — a prime number — with full-file SHA <code>3d49a0b6</code>. The anchor delta is zero, marking the seventh consecutive preland with exact anchor computation (compute law 7-for-7). Chapter 4962 was still returning 404 at the time of staging.