Swiping at the main gate or 2 wheeler entry instead of ODC, would it be considered a WFO count?

Manifesting from home that you’re working from ODC can also be considered as WFO

Yes. It shows 'at office'. And does not reduce the wfo index. But hours will be shown as nil. So your manager will know that you just swiped.

Yes

No, for TCS Sahyadri Park, Pune

yes its wfo