blog: outline pricing release post.

[thruflo]

Draft outline co-authored with @balegas using /blog-planner:

1. TLDR — pricing live, usage-based, reads free, PAYG free under $5
2. Context — battle-tested, platform maturity
3. How pricing works — model, tiers, why reads are free
4. What it costs in practice — AI chat app scenario, SaaS dashboard scenario
5. Get started — sign up, pricing page, existing user notification
6. CTAs

The commented meta footer includes: intent block, title/description/excerpt briefs, image prompt, Postgres Sync pricing page brief, asset checklist, typesetting checklist, and open questions.

Next steps: validate the scenario numbers, fill in title/description/excerpt using the briefs, create the header image (use /blog-image-brief when ready), and prose up the outline in place. When the draft is done, use /blog-review to review it.