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Cross-Tab Synchronization Races in Single-Page Applications : Sync Schema Evolution Across Client Generations
TypeScriptWeb Locks APIBroadcastChannelZustand
Problem Breakdown
The migration defect is treating synced persistent state like request/response API traffic: synced records are read and written by every client generation simultaneously, so schema evolution is a compatibility matrix problem, not a versioned-endpoint problem. SPAs run multiple tabs against shared localStorage and Broad…
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