* ADR: Add PrimeVue fork decision record
Adds ADR-0003 documenting the decision to fork PrimeVue as a monorepo workspace package. Key rationale includes transform coordinate system conflicts and virtual canvas scroll interference that require component-level modifications.
* ADR: Reject PrimeVue fork decision
- Change status from Proposed to Rejected
- Document rationale: implementation complexity with dual monorepos,
maintenance burden, alternative solutions available
- Add specific code citations and repository links
- Include alternative approach using shadcn/ui for selective replacement
