AC#3 verification trace consolidated; G-A2600-002 acceptance criteria all addressed

Docs-only consolidation closing G-A2600-002 AC#3. A "Collision Latch Verification Trace" subsection now sits directly under the TIA collision-detection spec (after the REFORGE implementation note), cross-referencing each spec contract (sticky-until-CXCLR, mid-scanline recompute-on-read, D6/D7-only bus) against the F118-F124 runtime evidence and recording the full latch->consumption->death->DEC chain with its permanent mechanical assertions.

Raw traces, ROM material, local paths, and personal data are not part of this public record.