Integration checkpoint for epic-contact-list-management-business-logic
epic-contact-list-management-business-logic-integration-task — Integration Task
Integration Purpose
Verify integration with dependent epics: epic-contact-list-management-foundation, epic-contact-list-management-ui-components
This integration checkpoint ensures proper coordination and compatibility between different epics. It verifies that all interfaces, data flows, and dependencies are correctly implemented before proceeding.
Integrates With Epics
Execution Context
Tier 4 - 323 tasks
Can start after Tier 3 completes
Handles integration between different epics or system components. Requires coordination across multiple development streams.
| Status | pending |
| Type | Integration |
| Estimated | 4h |
| Tier | 4 |
For organizations with large contact lists (NHF has 1,400 local chapters and potentially thousands of contacts), local in-memory filtering may be too slow and Supabase ILIKE queries without supporting indexes may exceed acceptable response times or accumulate excessive read costs, degrading search usability for power users.
Mitigation & Contingency
Mitigation: Define and document the list-size threshold in ContactSearchService before implementation. Confirm that indexes on name and notes columns exist in the Supabase schema before enabling server-side search. Profile ContactSearchService against realistic data volumes in the staging environment using the largest expected org.
Contingency: If response times are unacceptable in staging, introduce result-count pagination in ContactListService and add a user-visible 'showing top N results — refine your search' indicator, deferring full pagination to a follow-up task.
In NHF's multi-chapter context, when a user switches organization, Riverpod providers may emit a brief window of stale contact data scoped to the previous organization before the invalidation cycle completes, transiently exposing contacts from the wrong chapter.
Mitigation & Contingency
Mitigation: Model organization context as a Riverpod provider dependency so that any context change immediately marks contact providers as stale. Render a loading skeleton instead of the stale list during the re-fetch transition. Cover this scenario in integration tests with explicit org-switch sequences.
Contingency: If race conditions are observed during QA, add an explicit organization_id equality check in ContactListService that compares each fetched record's scope to the active session org, discarding any mismatched batch before returning results to the provider.