fix: skip notification validation without Copilot app id

[cursor]

Changes

• Support COPILOT_APP_ID as the notification app identifier, with the existing COPILOT_APP_API_KEY value as fallback.
• Skip client notification count validation when no app id is configured, avoiding raw ZodError crashes and preventing unsafe repair work against unfiltered notifications.
• Filter Copilot notifications using the resolved app id without parsing an undefined env value.

Testing Criteria

• yarn test src/utils/CopilotAPI.notifications.test.ts src/app/_fetchers/ValidateNotificationCountFetcher.test.tsx --runInBand covers missing app-id no-op behavior and configured app-id filtering.
• yarn lint:check exits successfully with existing warnings only.
• yarn tsc was run; it still fails on pre-existing missing SVG module declarations in src/icons/index.ts, with no diagnostics from the changed files.

Notes

• Linear and Sentry MCP access were unavailable in this automation session (auth_revoked / needsAuth), so the issue source and stack trace could not be directly re-read from Linear/Sentry. The implemented fix targets the current Tasks code path that can produce the observed ZodError: [ title when notification app-id env is absent.

Impact & Surface Area of Change

• Affects client notification count validation on /client and /api/notification/validate-count.
• If no app id is configured, validation is skipped rather than throwing or mutating notification state.
• If an app id is configured, existing validation behavior is preserved while filtering by that id.

  

[linear-code]

OUT-3903

[vercel]

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Project	Deployment	Actions	Updated (UTC)
tasks-app	Ready	Preview, Comment	Jun 24, 2026 1:06pm