Quorum, proxies and how a valid vote fails
Most challenged board decisions are not challenged on the merits. They are challenged on notice, quorum or an invalid proxy, and those three are entirely a records problem.
What makes a board vote invalid?
Typically one of four things: notice that did not meet the period or the form the constitution requires, quorum that was not present at the moment of the vote, a member voting despite a disqualifying interest, or a proxy that was not validly appointed or was not permitted for that class of decision. None of these is about whether the decision was wise.
Notice
Notice has a period and a form, both set by the entity's constitution, and both are checkable facts rather than matters of judgement. The period runs from when notice was given, which is not the date on the letter, and a system that timestamps issue rather than drafting removes the ambiguity entirely.
Short notice is usually permitted with consent, and consent has to be recorded from the people entitled to give it. A meeting held on short notice with consent evidenced is safe. The same meeting with consent assumed is a decision waiting to be unwound.
Quorum is a moving number
Boards treat quorum as a gate at the start of a meeting. It is not. It is a condition on every decision taken during it. Directors join late, leave early, take a call, and recuse themselves for a single item, and each of those events changes the denominator.
Recusal is the case people forget. If the constitution says an interested director is not counted in the quorum for that item, then a board of seven with a quorum of four, where two directors are conflicted on item six, may have no quorum for item six alone while having quorum for everything else in the same meeting.
Proxies and written resolutions
Whether a director may appoint a proxy at all is a constitutional question, and in many entities the answer is no, because a directorship is a personal office. Where proxies are permitted, the appointment usually has a form, a deadline and a scope, and it can be limited to specified business.
Written resolutions, decisions taken by circulation without a meeting, are the other route and they carry their own trap: they usually require unanimity rather than a majority, and the record has to show every eligible director signed, not that nobody objected. Silence is not assent unless the constitution says it is.
How Mithaq handles it
Attendance in Mithaq is recorded per meeting and decisions are recorded per item, so the record shows what was decided and by whom rather than presenting a single attendance line for a three-hour sitting. Motions and polls capture each member's position individually, and the audit log timestamps issue of the notice.