An interactive ERD viewer/editor — as a separate erdify-studio package

[FabianClemenz]

Inspired by tools like https://sqltoerdiagram.com/: a localhost app that renders the ERD, lets you manually reposition entities, and exports PNG/SVG.

I'd love this — but I think it belongs in a separate package, not erdify core. Curious what you all think.

Why keep it out of core

erdify's whole identity is a stdlib-ast-only, zero-runtime-dependency parser+emitter that outputs diagram source (no DB connection, no code execution, pipeable, CI-friendly).

• PNG export needs a renderer (headless Chromium / Playwright / native lib) — the exact heavy dependency erdify avoids.
• Manual repositioning isn't a flag: PlantUML/Mermaid are auto-layout, so drag-and-drop means owning a layout/position state + persistence — a stateful product of its own.
• Different lifecycle & audience: a web UI vs. a focused CLI in CI.

Clean split: erdify = generator; studio = a consumer of it.

Proposed shape

• erdify-studio depends on erdify, consumes its model (ideally a --format json output — tracked separately), and adds the server + editor + export.
• --format html already covers cheap static "view in browser"; interactive editing is studio territory.

Open questions

• Separate repo or monorepo?
• Minimal MVP scope — view-only first, editing later?
• Render/export stack: headless Chromium, or lean on @mermaid-js/mermaid-cli / PlantUML?

👉 Thoughts, prior art, volunteers all welcome.