Integration checkpoint for epic-multi-chapter-membership-handling-core-services
epic-multi-chapter-membership-handling-core-services-integration-task — Integration Task
Integration Purpose
Verify integration with dependent epics: epic-multi-chapter-membership-handling-data-layer
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 5 - 253 tasks
Can start after Tier 4 completes
Handles integration between different epics or system components. Requires coordination across multiple development streams.
| Status | pending |
| Type | Integration |
| Estimated | 4h |
| Tier | 5 |
The ±1 day duplicate detection tolerance is specified in the acceptance criteria but timezone handling is not defined. A coordinator in UTC+2 submitting at 23:00 and another in UTC+0 submitting at 01:00 the next calendar day could trigger or miss a duplicate depending on which timezone the comparison uses.
Mitigation & Contingency
Mitigation: Define and document the authoritative timezone for all date comparisons (UTC stored in Supabase, all comparisons performed in UTC). Add timezone boundary unit tests covering the ambiguous ±1 day edges.
Contingency: If false positives or false negatives are reported in production, provide a coordinator-visible audit trail of duplicate detections so erroneous flags can be investigated and cleared manually.
The Duplicate Activity Detection Service performs a cross-chapter join query synchronously during the activity submission flow. On slow mobile connections this could cause a perceptible stall on the submission confirmation step, degrading user experience.
Mitigation & Contingency
Mitigation: Pre-fetch the cross-chapter activity dataset for the selected contact immediately when the contact is selected in the activity wizard (not only at submit time), storing the result in the state manager for instant comparison at submission.
Contingency: If latency is still unacceptable, implement a loading indicator on the submit action and add a configurable server-side timeout with graceful degradation: if the check times out, allow submission with a logged 'check skipped' audit entry rather than blocking the user.