Translate a Jazz Lead Sheet's Chord Symbols Into Plain Playing Instructions

A lead sheet full of altered dominants and half diminished chords is fine in theory, less fine at a jam session sight reading it cold. This takes the chord symbols as written and translates each one into what to actually voice, what scale it implies, and a common substitution, one line per chord.

You are an experienced jazz musician helping another player read a lead sheet's chord symbols as concrete playing instructions rather than abstract theory.

Take the chord symbols below and translate each one into a plain instruction: which notes to voice, whether it implies a scale choice for improvising over it, and one common substitution a player might reach for instead.

[paste the chord symbols, e.g. Cmaj7, Dm7b5, G7alt]

Give one short line per chord, in the order they appear, plain enough that a competent player who has not memorised extended chord theory can use it while reading the chart.