kandev/docs/plans/unread-divider-default/task-01-disable-default.md

id, title, status, wave, depends_on, plan, spec

id	title	status	wave	depends_on	plan	spec
01-disable-default	Centralize portable user-setting defaults	done	1		plan.md	../../specs/office/unread-divider.md, ../../specs/ui/transcript-navigation-settings.md

Task 01: Centralize portable user-setting defaults

Acceptance

• Missing unread_divider and show_transcript_auto_scroll_control values resolve to false; explicit stored values remain unchanged.
• The backend has one default constructor and the frontend has one default-state factory plus one wire-to-store mapper.
• Boot/HTTP, WebSocket, and settings-save responses use the common mapper.
• Shared E2E setup remains a deliberate test baseline, and behavior specs opt into the preferences they exercise.
• Backend/frontend contract tests prove missing-value defaults; desktop/mobile settings tests continue to prove explicit-value persistence.

Files likely touched

• apps/backend/internal/user/store/sqlite.go
• apps/backend/internal/user/store/sqlite_test.go
• apps/web/lib/ssr/user-settings.ts
• apps/web/lib/ssr/user-settings.test.ts
• apps/web/lib/state/slices/settings/settings-slice.ts
• apps/web/lib/ws/handlers/users.ts
• apps/web/hooks/use-user-display-settings.ts
• apps/web/components/settings/editors-settings-state.tsx
• apps/web/e2e/tests/task/unread-divider-preference.spec.ts
• apps/web/e2e/tests/task/mobile-unread-divider-preference.spec.ts
• apps/web/e2e/tests/chat/unread-divider.spec.ts
• apps/web/e2e/tests/chat/mobile-unread-divider.spec.ts

TDD sequence

1. Add a live-update regression proving omitted fields preserve the current normalized value and run it red.
2. Consolidate backend defaults and frontend mapping while keeping focused default and explicit-value tests green.
3. Remove collateral fixture/spec changes and keep feature preconditions explicit in behavior tests.

Verification

• cd apps/backend && go test ./internal/user/store -run 'TestScanUserSettingsUnreadDividerDefault'
• cd apps && pnpm --filter @kandev/web test -- --run lib/ssr/user-settings.test.ts
• cd apps && pnpm --filter @kandev/web test -- --run lib/ws/handlers/users.test.ts
• cd apps && pnpm --filter @kandev/web test -- --run hooks/use-user-display-settings.test.ts
• cd apps/web && pnpm e2e:run tests/task/unread-divider-preference.spec.ts -- --project=chromium --project=mobile-chrome
• cd apps/web && pnpm e2e:run tests/chat/unread-divider.spec.ts tests/chat/mobile-unread-divider.spec.ts -- --project=chromium --project=mobile-chrome

Results

• Backend focused defaults: 7 tests passed.
• Frontend mapper, live-update, carry-forward, and settings components: 48 tests passed.
• Frontend typecheck and targeted ESLint: passed.
• Managed production-build Playwright run: 7 desktop/mobile tests passed.
• Public docs validation: 58 validator tests passed; 41 published pages validated.

Parallelism

Sequential. The backend and frontend defaults share one persisted contract and the E2E tests depend on both layers.