[wSedlacek]

Reopened from closed upstream PR pingdotgg#32634 as a draft for t3.1code.
Idea rank: 44 of 108. Branch is as it was upstream; it likely needs a rebase (modernize) before review.

Stacked on pingdotgg#31232. Cannot target that branch as base until it exists on pingdotgg/t3code (fork-only head today), so this opens against main and includes pingdotgg#31232’s commits. Review the tip commits only on t3/ios-inbox-mail-shelves.

Working/Snoozed/Settled headers now read like Mail date groups (semibold label, no hairline, trailing count when collapsed, chevron). Expand/collapse is unchanged.

When there are no threads at all, Chats shows a Mail-like empty inbox with a New thread CTA.

When the attention inbox is clear but Snoozed/Settled (or Working) still have threads, Chats shows an All Caught Up placeholder so inbox zero feels intentional.

Before / after — shelves (iPhone 17 Pro)

Before (pingdotgg#31232 shelf chrome)	After (Mail date-group)

Collapsed shelves:

After — zero threads

After — inbox zero (nothing needs a response)

Test plan

• Open Chats with Working + Snoozed + Settled threads
• Confirm shelf labels are semibold title-size without a hairline divider
• Confirm collapsed shelves show trailing count + chevron; expanded hide the count
• Expand/collapse still works for Snoozed and Settled
• With zero threads and a ready environment: icon + “No Threads” + New thread CTA
• Clear the attention inbox while shelves remain: All Caught Up above Snoozed/Settled
• Pending drafts or active threads hide the caught-up placeholder
• Spot-check Android (shared list builder / placeholder)
• vp run check:changed

Created with Auto (Composer) in Cursor / T3 Code.

🤖 Generated with Claude Code