[stefan-ernst]

Summary

• Expand WI-2126 to defer item and collection/workspace SSE-triggered view reads while hidden or offline, keeping SSE connections open and reconciling once on recovery.
• Gate SLA/public-board/Zammad polling, delayed collection reconciliation, support metrics, and board SLA ticks. Preserve initial loads, explicit actions, notification delivery, and authoritative deletion.
• Serialize refresh bursts, retain recovery behind slow requests, cancel obsolete Zammad requests, and clean up listeners/timers and stale responses on scope changes/unmount.
• Fix offline-only recovery tracking. Align the Biome schema with its pinned version.

Companion tests: https://github.com/Windshiftapp/core-tests-internal/pull/42

Validation

• 182 focused frontend tests passed under Bun across 13 files; regression failures also demonstrated against unchanged origin/main.
• cd frontend && bun run --bun typecheck — zero errors/warnings.
• cd frontend && bun run --bun check — all frontend guards passed.
• Biome checked changed non-Svelte source and test files; git diff --check passed in both repositories.
• E2E_KEEP_ARTIFACTS=1 ../core-tests/run-e2e.sh tests/view-background-sync.spec.ts tests/item-detail-sse-live.spec.ts tests/collection-board-sse-live.spec.ts tests/collection-list-tree-sse-delete.spec.ts — 8 passed, no retries/skips, including fresh frontend/server builds.

Focused unit command:

VITEST_RUNTIME=bun ../core-tests/run-overlay-script.sh . scripts/run-frontend-tests.sh \
  src/lib/composables/viewEventStreamBackground.test.js \
  src/lib/composables/useItemEventStream.test.js \
  src/lib/composables/useCollectionEventStream.test.js \
  src/lib/utils/backgroundSync.test.js \
  src/lib/utils/backgroundRefresh.test.js \
  src/lib/widgets/componentPollingBackground.test.js \
  src/lib/widgets/SupportMetricsWidget.test.js \
  src/lib/stores/collectionContext.test.js src/lib/stores/notifications.test.js \
  src/lib/features/items/ItemSLAPanel.test.js src/lib/features/sla/slaState.test.js \
  src/lib/api/integrations.test.js src/lib/pages/PublicBoard.test.js

Full frontend suite under Bun: 3,612 tests passed, but 9 files failed in unrelated OpenUI/Zod imports and Vite generated-config imports through symlinked dependencies. Those failures reproduce against unchanged origin/main; they are not suppressed. The tests PR adds an explicit Bun runtime option without changing the legacy default or installation/lockfile contract.

No Go tests or full cross-browser suite run; this is a frontend-only change. No workspace reference-scheduler redesign or notification suspension.

[github-actions]

Size Change: 0 B 🆕

Total Size: 0 B

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