fix str(Port)

[sebastian-goeldi]

Summary by Sourcery

Bug Fixes:

• Fix the string representation of the Port class to correctly display layer information.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

The PR fixes the string representation of Port objects by replacing the layer name logic with the layer_info property, simplifying the code and making it more consistent.

Updated class diagram for Port class

classDiagram
    class Port {
        - name: String
        - dwidth: Float
        - dcplx_trans: Transformation
        - layer_info: LayerInfo
        - port_type: PortType
        + hash() bytes
        + __repr__() str
        + print(type: Literal["dbu", "um", None]) void
    }
    note for Port "Updated __repr__ method to use layer_info instead of layer name logic"

File-Level Changes

Change	Details	Files
Updated Port.repr() method to use layer_info property	Removed custom layer name handling logic Replaced layer name logic with direct layer_info property access	src/kfactory/kcell.py

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