feat(blog): add Prisma Postgres on Stripe Projects post

[sampolahtinen]

Purpose of change

Adds the announcement blog post for Prisma Postgres as a provider on Stripe Projects — letting developers add a Prisma Postgres database to their Stripe project from the CLI, with spending limits via Shared Payment Tokens and plan management in the same terminal flow.

What's changed and why

• New post (apps/blog/content/blog/prisma-postgres-on-stripe-projects/index.mdx): problem-first intro (agents can build but can't provision paid infra), real init/add CLI output, repo scaffold tree, the four-plan pricing table, an SPT payment-flow sequence diagram, and the teardown flow.
• Env var names: documents PRISMA_DATABASE_URL (direct) and PRISMA_ACCELERATE_URL (Accelerate), matching the access-config rename in pdp-control-plane#4196.
• Vault explanation grounded in Stripe's docs (Secret Store canonical copy + encrypted local .projects/vault/vault.json, both gitignored).
• Prisma Compute referenced with the launch post's wording and linked to the public-beta announcement.
• Author avatar added at apps/blog/public/authors/sampo-lahtinen.png (squared 460x460, matching the existing convention).
• Mermaid.tsx: set the muted color to the theme's muted-foreground so edge/message labels stay legible on dark backgrounds (affects all blog diagrams; same dim-label issue applied to all).

The post was reviewed with the prisma-copy-review + prisma-product-messaging skills: positioning aligned, product language verified, fluff trimmed, em dashes removed, credentials masked.

Testing notes / Before-after

• Renders locally at /blog/prisma-postgres-on-stripe-projects (HTTP 200); Mermaid diagram compiles to inline SVG.
• pnpm --filter blog types:check passes.

Not ready to publish yet

• Hero + OG images are missing. Frontmatter points at imgs/hero.png / imgs/meta.png, which don't exist (blog images are managed outside git). Real hero and OG/meta images need to be created and the frontmatter pointed at them before publish.
• A few product/billing claims (SPT limit-vs-prorated-price, immediate downgrades) and the upgrade prisma-plan command syntax were confirmed by the author; flag if anything in the Stripe Projects behavior shifts before launch.

Summary by CodeRabbit

• New Features
  • Added a new blog post about provisioning Prisma Postgres through Stripe, including setup steps, day-to-day commands, spending limits, and cleanup options.
• Style
  • Improved Mermaid diagram readability by adjusting label colors for better contrast and legibility.

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Project	Deployment	Actions	Updated (UTC)
blog	Ready	Preview, Comment	Jun 26, 2026 12:30pm
docs	Ready	Preview, Comment	Jun 26, 2026 12:30pm
eclipse	Ready	Preview, Comment	Jun 26, 2026 12:30pm
site	Ready	Preview, Comment	Jun 26, 2026 12:30pm

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 1352c97c-2dc1-4585-bde6-0ba2d5fb3828

📥 Commits

Reviewing files that changed from the base of the PR and between 29f9f7b and 067e649.

⛔ Files ignored due to path filters (3)

• apps/blog/public/authors/sampo-lahtinen.png is excluded by !**/*.png
• apps/blog/public/prisma-postgres-on-stripe-projects/imgs/hero.png is excluded by !**/*.png
• apps/blog/public/prisma-postgres-on-stripe-projects/imgs/meta.png is excluded by !**/*.png

📒 Files selected for processing (2)

• apps/blog/content/blog/prisma-postgres-on-stripe-projects/index.mdx
• apps/blog/src/components/Mermaid.tsx

---

Walkthrough

Adds a blog post about provisioning Prisma Postgres through Stripe Projects, covering setup, environment handling, spending limits, plan changes, operational commands, cleanup, and a closing note. It also updates Mermaid SVG rendering to use a muted label color.

Changes

Stripe Projects announcement post

Layer / File(s)	Summary
Frontmatter and intro apps/blog/content/blog/prisma-postgres-on-stripe-projects/index.mdx	Adds the post frontmatter and opening sections introducing Stripe Projects and Prisma Postgres.
Getting started flow apps/blog/content/blog/prisma-postgres-on-stripe-projects/index.mdx	Describes initializing Stripe Projects, creating the Prisma database, and where generated environment values and secrets are stored.
Spending limits and plans apps/blog/content/blog/prisma-postgres-on-stripe-projects/index.mdx, apps/blog/src/components/Mermaid.tsx	Covers SPT spending caps, the payment-flow diagram, the plan catalog, and upgrade/downgrade commands; Mermaid SVG options now set a muted label color.
Operations and wrap-up apps/blog/content/blog/prisma-postgres-on-stripe-projects/index.mdx	Adds the status and open commands, cleanup steps, and the closing note about Prisma Compute.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• prisma/web#7844: Introduced the blog’s Mermaid rendering path that this PR updates with a muted label color.

---

_{Comment @coderabbitai help to get the list of available commands.}

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No changes detected	-	Jun 26, 2026, 12:36 PM