Presentability: neutralize competition-meta, tidy logbook pages

retag: pages

retag: logbook.json (verbatim titles)

retag: index.html title

retag -> paper-ISNSiAC3n1 + new title

retag: drop stale pages/

Upload logbook.json with huggingface_hub

Upload pages/claim-c2-multiround/page.md with huggingface_hub

repro: publish SimulCost logbook (C1-C4, 13 simulators verified)

Initial Trackio logbook publish (SimulCost ww57OvgpP9)

initial commit