refactor(api) : remove TypeMachine skeleton system, fix ModelType serialization
- Remove TypeMachine, TypeMachineComponentRequirement, TypeMachinePieceRequirement,
TypeMachineProductRequirement entities and related repositories/state processor
- Replace MachineSkeletonController with MachineStructureController
- Link CustomField directly to Machine instead of TypeMachine
- Add migration to drop TypeMachine tables and migrate custom fields to machines
- Fix ModelType serialization: Annotation\Groups → Attribute\Groups (Symfony 8 compat)
and add product:read, composant:read, piece:read groups for embedded category display
- Fix Profile: same Annotation → Attribute import
- Fix SearchFilter: partial → ipartial on Comment and Document
- Update frontend submodule (remove skeleton pages/components, simplify machine creation)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>