Rewrite DEC-003 and DEC-010 rows in the Key Decisions table to reflect
the Phase 01 amendments (getDisplayMedia + long-lived port keepalive),
each citing the .planning/intel/decisions.md amendment block as the
canonical source. Swap the two Constraints bullets that cited
chrome.alarms keepalive and tabCapture binding for replacement
bullets bound to CON-display-capture-binding.
