ArbitrumDAO Overhauls Council Elections and Constitution

ArbitrumDAO proposal updates the Security Council election process and ArbitrumDAO constitution. Council cohort duration increases from 1 year to 2 years, cutting election frequency from twice to once yearly. Nominee qualification threshold drops from 0.2% to 0.1% of votable ARB. Key rotation becomes enabled during Compliance and throughout member terms. Voting ends August 13.