fix(POR-22659): handle platform LineItems validation errors in notification-center

[cursor]

Changes

• Wrap /notification-center notification fetch in try/catch so platform API errors (e.g. LineItems total needs to be greater than 0.5) show a user-friendly SilentError instead of an unhandled request error in Sentry
• Return early when token payload lacks notificationId
• Use safeParse for CTA params with a friendly message when the notification is not task-linked

Testing Criteria

• ESLint on changed file — no new issues
• Verified fix matches the established defensive pattern from POR-22642/POR-22643/POR-22646 (try/catch + SilentError + safeParse)

Notes

• Linear: POR-22659 — unhandled request error: LineItems total needs to be greater than 0.5
• The error string originates from the Assembly platform billing/invoicing validation when invoice line items total ≤ $0.50 (minimum charge threshold); not from tasks-app code
• Platform team should investigate why an invoice/notification is being created with sub-minimum line item totals (manual intervention)
• Same class of issue as POR-22650/POR-22651/POR-22652 (platform errors surfacing via /notification-center)

Impact & Surface Area of Change

• /notification-center server component only — IU notification deep-link entry point
• No API route or client component changes

  

[linear-code]

POR-22659

[vercel]

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Project	Deployment	Actions	Updated (UTC)
tasks-app	Ready	Preview	Aug 22, 2026 4:34am