erdify 0.11.4 — ternary & composite-PK link tables

[FabianClemenz]

erdify 0.11.4 is out 🎉

This patch fixes link-table detection for composite-primary-key association tables. Previously only two-FK join tables got the link stereotype; now any table whose primary key is made up entirely of foreign keys — with no payload columns — is detected as a link table, regardless of its name or how many entities it joins.

• Ternary and higher-order joins (3+ FKs) are recognized and drawn as a star of edges from each parent to the link entity.
• The rule is now shared across all parser backends — Python AST, Core Table(...) synthesis, and the SQL DDL frontend — so behavior is consistent no matter how you feed erdify your schema.

pip install --upgrade erdify   # 0.11.4
erdify path/to/models -o erd.puml

A composite-PK join table like the following is now stereotyped correctly:

class ProjectMembership(SQLModel, table=True):
    __tablename__ = "project_membership"
    project_id: UUID = Field(foreign_key="project.id", primary_key=True)
    user_id: UUID    = Field(foreign_key="user.id", primary_key=True)
    role_id: UUID    = Field(foreign_key="role.id", primary_key=True)

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