- lib/sprint-conflicts.ts: drie pure/server-side helpers voor eligibility
+ cross-sprint detectie.
- isEligibleForSprint(story): sprint_id IS NULL en status != DONE
- partitionByEligibility(prisma, storyIds, excludeSprintId): split in
eligible / notEligible / crossSprint met reden per story
- getBlockingSprintMap(prisma, productId, storyIds, excludeSprintId):
map storyId → { sprintId, sprintName } voor stories in andere OPEN sprint
- Tests: __tests__/lib/sprint-conflicts.test.ts (16 cases) — alle eligibility
paden + cross-sprint scoping + CLOSED-sprint filtering.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
