Each model row now has a Clone button that duplicates the model with all
its ports, flags, and images, appending '(copy)' to the name. Saves
re-creating 48 ports when making a sibling switch model.
Added Connect Mode toggle button on rack and device views. When active,
clicking a port selects it (glowing accent border), clicking a second
port opens a mini form to choose connection type/color/labels and
create the cable in one flow. Escape or re-clicking deselects. Port
elements now use onclick JS instead of HTMX triggers to support both
normal inspection mode and connect mode.
Device view now has a 'Rename Ports' section with inline inputs for
every port. Port names are no longer immutable after device creation.
Added PortUpdateName to DB layer and POST /devices/{id}/ports/rename.
Joca