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isaac
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Wave 103 (original): ChatRecentActionsControllerNode.peer Peer -> EnginePeer migration ABANDONED after pre-flight discovered a 75-site ADD-bridge cascade through chatRecentActionsHistoryPreparedTransition into Message.peers SimpleDictionary<PeerId, Peer> store sites. Lessons captured in docs/superpowers/postbox-refactor-log.md "Wave 103 ABANDONED" section + ~/.claude/projects/-Users-isaac-build-telegram -telegram-ios/memory/feedback_wave71_shadow_risk.md (4-layer pre-flight checklist for stored-Peer-field migrations). Wave 103 (retry, 92230b0691): drained 5 accountManager.mediaBox .storeResourceData Shape-A sites against the wave-94 facade. 2 files / 3 Edit calls (1 single + 2 replace_all) / 1-iter / 29.5s build. Closes the storeResourceData accountManager-side drain entirely. Wave 104 (08fc3f721e): drained 3 of 8 accountManager.mediaBox.resourceData Shape-A sites against the wave-32/wave-94 AccountManagerResources.data (resource:) facade + 3 consumer-side .complete -> .isComplete renames (EngineMediaResource.ResourceData field rename). 1 file / 6 Edit calls / 1-iter / 11.7s build. 5 of 8 candidates deferred behind Postbox-typed -function-parameter barriers (fetchCachedScaled*Representation cascade, combineLatest typed-tuple coupling). Established the "Postbox-typed -function-parameter barrier registry" pattern. Wave 105 (0c76724409): DeviceContactInfoSubject enum 3 case Peer? payloads + 2 callback signatures + 1 computed property migrate to EnginePeer?. 5 files / 17 edits / 1-iter / 203s build (foundational AccountContext touch). Net wrap delta -8 (10 drops, 2 ADD bridges, 1 downcast->case-let). First wave-71-shadow-style migration after the wave-103 abandonment forced a discipline reset; first-pass-clean via thorough pre-flight inventory (~15 min). Net session progress: -16 wraps across 4 wave attempts plus durable scaffolding (feedback memory, barrier registry, 4-layer pre-flight checklist). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>