Voice extraction

PurposeDerive a style profile from real sent mail and chat rather than describing a tone.

Read my sent mail from the last 90 days and my last 200 Slack messages.
Do not summarise them. Build me a style profile:

 · sentence length distribution, and where I use fragments
 · how I open and how I close, by relationship type
 · words and constructions I actually use
 · a "never" list: words, punctuation and moves I never use
 · three verbatim examples of me at my best in this channel

Save it to /workspace/voice/profile.md. Then rewrite this draft
using it, and show me both versions.