Summary

Unblocks the staging → main deploy PR (#2872), whose Typecheck (tsc) check fails on staging:

modules/onboarding/setup/steps/AgentConfigStep.tsx(281,17): error TS2322: Type '"idle" | "thinking"' is not assignable to type 'AgentAvatarMood | undefined'.
modules/onboarding/setup/steps/DataLayerTimelineStep.tsx(387,11): error TS2322: Type '"thinking"' is not assignable to type 'AgentAvatarMood | undefined'.

be36c9dcc renamed AgentAvatarMood 'thinking' → 'working'. The onboarding steps that landed alongside it still passed 'thinking'. This swaps both call sites to 'working', which is the same animation under its new name.

Test plan

• pnpm --filter @zero/mail run types passes locally
• Typecheck (tsc) CI check passes on this PR
• Re-run #2872 checks after merge

🤖 Generated with Claude Code

Confidence Score: 5/5

The PR appears safe to merge and correctly applies the avatar mood rename at both affected onboarding call sites.

Summary

This PR updates two onboarding avatar call sites to use the renamed working mood, restoring compatibility with the current AgentAvatarMood type.

• Updates the agent configuration chat avatar while work is in progress.
• Updates the data-layer timeline reader avatar.
• Preserves the animation previously represented by thinking.

_{Reviews (1) · Last reviewed commit: "fix(onboarding): use the renamed 'workin..."}