In the schedule builder, when searching for a proposal to add, show a warning on the result if the proposal has already been added to the schedule

[marcoacierno]

[marcoacierno]

@claude work on this

[claude]

Claude finished @marcoacierno's task in 5m 49s —— View job • claude/issue-4586-20260217-0951 • Create PR ➔

---

Completed: Issue #4586

Task: Show a warning in the schedule builder when searching for a proposal that has already been added to the schedule.

Todo List

• Understand the schedule builder code structure
• Find the proposal search functionality
• Identify how to check if a proposal is already in the schedule
• Add hasScheduleItems field to GraphQL types (Submission and Keynote)
• Update GraphQL fragments to include hasScheduleItems
• Update ProposalPreview component to show warning
• Update KeynotePreview component to show warning
• Optimize query to prefetch schedule_items
• Commit and push changes

Summary

Added a warning banner in the schedule builder search results when a proposal or keynote has already been added to the schedule. The warning appears as a yellow banner with the text "⚠️ This proposal/keynote has already been added to the schedule".

Changes Made

File	Change
backend/api/submissions/types.py	Added has_schedule_items boolean field to Submission type
backend/api/conferences/types.py	Added has_schedule_items boolean field to Keynote type
backend/api/schedule/queries/search_events_for_schedule.py	Added schedule_items to prefetch_related for query optimization
custom_admin/src/components/fragments/submission.graphql	Added hasScheduleItems to fragment
custom_admin/src/components/fragments/keynote.graphql	Added hasScheduleItems to fragment
custom_admin/src/components/schedule-builder/add-item-modal/proposal-preview.tsx	Added yellow warning banner when hasScheduleItems is true
custom_admin/src/components/schedule-builder/add-item-modal/keynote-preview.tsx	Added yellow warning banner when hasScheduleItems is true

--- |