Entity E/R Diagram Generator

Generate a Mermaid E/R diagram from entity definitions found in source files and save it to a documentation file chosen by the user.

Step 1: Gather Locations

Before scanning any files, determine the two required paths. Ask the user if they are not provided upfront.

Entity source directory — where are the entity/model files?

• If not specified, search the workspace for common patterns: files named *.entity.ts, *Entity.ts, *Model.ts, *Schema.ts, or directories named entity/, entities/, models/, domain/
• Show the candidates found and ask the user to confirm which to use

Output file path — where should the diagram be saved?

• Do NOT assume or default to any path
• Ask the user explicitly: "Where would you like to save the diagram? (e.g. docs/entity-diagram.md)"
• Accept any path the user provides

Step 2: Evaluate Existing Diagram

If a file already exists at the confirmed output path: