**Test Group Member Management:**
- Refactor member data structure from simple ID array to object array with sequence numbers
- Update member objects to include both TestSiteID and Member (sequence) fields
- Fix addMember() to assign sequential Member numbers automatically
- Fix removeMember() to re-sequence remaining members after removal
- Fix moveMember() to properly swap and re-sequence members
- Add sorting by sequence number in members list display
- Update payload builder in tests.js to use proper object structure for API
- Update TestFormModal.svelte member mapping for edit mode
**Documentation:**
- Add TypeScript Types section to AGENTS.md with TestType and TestSummary examples
- Reorganize TODO.md with new test type categories and backend notes
**Cleanup:**
- Remove deprecated OpenSpec skills from .opencode/ directory:
- opsx-apply.md, opsx-archive.md, opsx-explore.md, opsx-propose.md
- openspec-apply-change/SKILL.md, openspec-archive-change/SKILL.md
- openspec-explore/SKILL.md, openspec-propose/SKILL.md
**New Files:**
- Add .serena/memories/ for code style conventions and task tracking
