Fix realtime payload equality stack overflow

[cursor]

Changes

• Replaced recursive deep-equal comparison for task realtime payloads with bounded comparisons over Tasks table fields.
• Added regression tests for no-op task updates, changed task fields, and cyclic payload values so RangeError: Maximum call stack size exceeded is not thrown.

Testing Criteria

• yarn test src/utils/isRealtimePayloadEqual.test.ts --runInBand — passes; covers the cyclic payload regression and task-field equality behavior.
• yarn lint:check — passes with existing warnings only.
• yarn tsc — still blocked by the repo's existing SVG module declaration errors in src/icons/index.ts; no errors remain from the touched realtime equality files.

Notes

• Linear issue: OUT-3959.
• Sentry MCP was not authenticated, so investigation used the Linear trigger metadata, Tasks app Sentry configuration, and in-repo stack-overflow candidates.

Impact & Surface Area of Change

• Affects Supabase realtime task update de-duplication on the client. Regression focus should be task board/detail live updates for no-op updates, title/body/status/archive/reassignment changes, and association/share changes.

  

[linear-code]

OUT-3959

[vercel]

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Project	Deployment	Actions	Updated (UTC)
tasks-app	Ready	Preview, Comment	Jul 8, 2026 12:11pm