<Cir-2026-793 >, hint

Let O be the center of circle , M be the midpoint of PQ.

Since <OMT=90, <ODT=<OBT=90, ODTBM are cyclic. Let <TOD=TOB=X

<TMD=<TOD=<CMP=X ( MC and MD are symmetric wrt MO)

<TMB=<TOB=X. <CMP=<BMT=X.  Hence C, M,B are collinear