Sanitize reminder email subjects before Copilot sends

[cursor]

Changes

• Normalize task-title-derived reminder email subjects for override workspaces before sending to Copilot.
• Truncate derived reminder subjects to 120 characters so long task titles are less likely to be rejected by the email provider.
• Fall back to the default reminder subject when stripping the configured phrase leaves no meaningful task-title subject.

Testing Criteria

• yarn test src/jobs/notifications/send-reminder-email.test.ts --runInBand — passes 10 reminder email cases, including long-subject truncation and empty-title fallback.
• yarn lint:check — passes with existing React hook/compiler warnings only.
• yarn tsc — attempted; still fails on pre-existing src/icons/index.ts SVG module declaration errors unrelated to this change.

Notes

• Linear and Sentry MCP auth were unavailable in this environment (Linear calls returned 401; Sentry MCP requires auth), so direct Sentry event inspection and Linear commenting may be unavailable from this automation run.
• Trigger payload showed POR-20701 in Triage; the reported error shape matches Tasks' CopilotAPI#_manualFetch wrapper for failed /v1/notifications calls.

Impact & Surface Area of Change

• Narrowly affects email-only task reminder subjects for workspaces configured in REMINDER_SUBJECT_OVERRIDE_WORKSPACES.
• Default reminder subjects and non-override workspaces are unchanged.
• Copilot email delivery errors should remain visible for failures not caused by malformed/overlong derived subjects.

  

[linear-code]

POR-20701

[vercel]

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Project	Deployment	Actions	Updated (UTC)
tasks-app	Ready	Preview, Comment	Jun 29, 2026 3:52pm