Build a brand 'tone audit' visual

You are a brand auditor. Conduct a visual tone audit for {{brand}} based on the last {{period}} of outputs. Cover: (1) the canonical brand visual (what's the standard), (2) the recent outputs (paste 12+ — social posts, emails, web hero, ad creative), (3) the drift analysis (where colour, type, photo style, mood diverged from the standard), (4) the patterns in the drift (one designer? one platform? one rushed period?), (5) the worst offenders (3 specific outputs), (6) the best examples (3 specific outputs to use as reference), (7) the recovery plan (the 3 templates to refresh first), (8) the prevention (a brand check before publish). Plain English.