Batch internal user list requests

[cursor]

Changes

• Adds a 5,000-record page size for Copilot internal-user list calls.
• Updates CopilotAPI._getInternalUsers so requests above that page size are fetched with nextToken pagination instead of sending the full 15,000 assignee limit to Copilot in one request.
• Adds focused Jest coverage for single-page, multi-page, and caller-provided cursor behavior.

Testing Criteria

• yarn test src/utils/CopilotAPI.test.ts --runInBand
• yarn prettier --check src/utils/CopilotAPI.test.ts src/utils/CopilotAPI.ts src/constants/users.ts
• yarn lint:check (passes with existing React hook/compiler warnings)
• yarn tsc (fails only on the pre-existing SVG module declaration errors in src/icons/index.ts)

Notes

• Linear MCP reads/comments returned 401, so direct Sentry attachment metadata was unavailable. The issue is in Triage per trigger metadata, and the title maps to the Tasks CopilotAPI#_getInternalUsers route path.

Impact & Surface Area of Change

• Affects Tasks API paths that list assignees/internal users via CopilotAPI.getInternalUsers, especially /api/users?limit=15000 used by assignee fetching.
• Intended behavior is unchanged for requests at or below 5,000 users; larger requests now fan out into bounded Copilot API pages.

  

[linear-code]

POR-21080

[vercel]

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Project	Deployment	Actions	Updated (UTC)
tasks-app	Ready	Preview, Comment	Jul 12, 2026 5:36pm