nx_ts_slot_router.nx

nx_ts_slot_router.nx -- TS3: THE FRONT DOOR ITSELF (the thin daemon around nx_ts_slot_lib). Split from the decision core deliberately: the core is a LIBRARY so a gate can drive ts_slot_flip directly and in-process, while this file is the runnable front door. One capability, one home -- a gate that had to fork a binary just to exercise a pure decision would be testing the plumbing. See nx_ts_slot_lib.nx for the full rung rationale, the standalone-by-design fence, and the scope of the warm-up probe. license_tier: ORIGINAL No hw writes (Rule 26).