E2E: Fix member presence away/offline indicators (@wip cluster B)

[mjkatgithub]

Planning

• Milestone: Phase 3
• Priority: P0
• Size: S
• Estimate: 1 SP
• Epic: Re-enable @wip chat E2E scenarios quarantined for green CI lane #134

Goal

Fix own member presence indicator so away/offline states are not stuck on
bg-green-500 in E2E.

Scope

• Member presence indicator: away
• Member presence indicator: offline
• Remove @wip on outline examples when green

Branch

bug/e2e-wip-presence

Acceptance criteria

• Away and offline examples pass without @wip.
• Online example stays green.

Test checklist

E2E

• Member presence indicator reflects standard status outline

Unit

• memberPresence.spec.ts + matrixPresencePreference.spec.ts

Notes

Root cause: startClient advertised online on sync (disablePresence: false);
member list lacked presence reactivity; settings apply could read stale
presenceValue ref when Playwright changed the select.

Fix: disablePresence on all startClient calls; setPresence('online')
only on fresh login (session restore leaves server presence untouched);
resolveRawMemberPresence + localStorage preference +
useMemberPresenceVersion; settings apply reads DOM select value;
E2E waits for stored preference and Synapse rate-limit backoff.

Docs: N/A — app composable + E2E step hardening.