Applies the wave-11/12/15 collapse pattern to ItemListAvatarAndNameInfoItem.
ItemContext.other payload changes from (accountPeerId:, postbox: Postbox,
network: Network) to (accountPeerId:, stateManager: AccountStateManager).
Internal AvatarNode.setPeer forward rewires through stateManager.postbox /
.network. Module drops import Postbox (source) and //submodules/Postbox:Postbox
(BUILD). Sole external caller — DeviceContactInfoController.swift:413 at the
Share-Extension boundary — migrated atomically.
Handle choice is stateManager: (not engine:) because the sole caller fires
specifically when the context is not a ShareControllerAppAccountContext;
ShareControllerAccountContext protocol exposes stateManager: AccountStateManager
but not engine: TelegramEngine, and no full TelegramEngine is constructible in
the Share Extension (no Account). Per feedback_postbox_refactor_handle.md and
the wave-15 precedent.
Pre-flight public-Postbox-type inventory grep (per CLAUDE.md's Wave-selection
guidance) returned only Postbox itself — no hidden leaks like wave 16's
EngineMessageHistoryThread / PeerStoryStats surprises.
Module fully Postbox-free after this wave. Running tally updated in CLAUDE.md.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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