Closing or reopening an issue did not notify project boards that carry
it as a card, so board tabs showed stale state until a manual reload.
CloseIssue/ReopenIssue only published milestone events and the issue
timeline notification — nothing project-scoped.
Add a CardStateChanged project event, published per linked project from
CloseIssue/ReopenIssue (best-effort; never fails the state change). The
board frontend flips the issue-state octicon in place and refetches the
affected column so state-filtered boards and counts stay correct. The
dispatch check precedes the CardUnlinked branch so a close/reopen is
not mistaken for a card removal.
Also switch a pre-existing String#match to RegExp#exec in the same file
to keep it lint-clean.
Closes#19
oleks
c19ecab35d