Fix client company resolution for grouped notification emails

[cursor]

Changes

• Resolve recipientCompanyId before sending client-targeted grouped emails, grouped reminder emails, and reminder emails.
• Enrich replayed grouped-email individual snapshots with the row/client company before calling Copilot notifications.
• Add focused unit coverage for missing-company fallback and grouped reminder payload construction.

Testing Criteria

• yarn test src/jobs/notifications/send-grouped-email.test.ts src/jobs/notifications/send-grouped-reminder-email.test.ts src/jobs/notifications/send-reminder-email.test.ts src/jobs/notifications/flush-grouped-email.test.ts src/app/api/notification/notification.service.test.ts src/jobs/notifications/send-task-reminders.test.ts --runInBand
• TESTCONTAINERS_HOST_OVERRIDE=127.0.0.1 yarn test:integration src/jobs/notifications/flush-grouped-email.integration.test.ts --runInBand
• yarn lint:check
• yarn tsc currently fails on the pre-existing SVG module declaration errors in src/icons/index.ts; no new type errors from this change were shown before that existing failure.

Notes

• Linear/Sentry direct reads were unavailable in this automation environment: Linear MCP returned 401 and Sentry MCP requires auth. The issue title matches Copilot notification group-channel failures reached through Tasks notification jobs.
• The first integration attempt needed Docker daemon/socket setup in the VM, and then TESTCONTAINERS_HOST_OVERRIDE=127.0.0.1 because Testcontainers otherwise wrote a non-local 172.18.0.1 URL that the test guard refuses.

Impact & Surface Area of Change

• Notification jobs that send client-targeted email-only Copilot notifications: grouped activity emails, grouped reminder emails, single reminder emails, and grouped-email single-event replay.
• Copilot client lookup is only added when a caller or stored snapshot lacks recipientCompanyId; existing payloads with a company id do not perform the extra lookup.

  

[linear-code]

POR-21055

[vercel]

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Project	Deployment	Actions	Updated (UTC)
tasks-app	Ready	Preview, Comment	Jul 9, 2026 6:34pm