Extract ~1300 LOC of reusable logic into dedicated modules:
- shared/utils/customFieldUtils.ts: field normalization, merge, dedup, display
- shared/utils/productDisplayUtils.ts: product resolution and display helpers
- composables/useMachineHierarchy.ts: hierarchy tree builder from links
- composables/useMachinePrint.ts: print selection and execution logic
These extractions prepare the ground for wiring [id].vue to import
from these modules instead of inlining all logic.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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