Draft release notes from a diff

Turn this changeset description into release notes humans read.

[PASTE DIFF / CHANGESET]

Rules:
- Lead with what the USER can now do, never with what changed internally
- One line per change, grouped: New / Improved / Fixed
- No jargon, no ticket numbers, no 'various improvements'
- If a change needs action from admins, flag it with ACTION:

Turns a messy changeset description into release notes humans read — grouped, jargon-free, action-flagged.

Why it works

Each rule kills one specific failure mode of AI release notes: leading with internals, wall-of-text formatting, jargon, and buried breaking changes. The ACTION: flag turns the output into a checklist.