The cached inverse source-target index assumed a clean viewsDirty flag
meant current mappings, but batch ingests release the registry lock
between records and only mark views dirty in their epilogue. A reader
interleaving mid-batch was served pre-batch metrics targets from the
cache, where the pre-index code always scanned live state. Every
bySource mutation path now drops the cache inside its critical
section, sending mid-batch readers to the live scan until the next
view rebuild, which restores the exact pre-index freshness. A test
pins the invalidation to the mutation itself rather than the epilogue
flag.
Contract-Neutral: staleness fix inside the cache lifecycle, resolved values and selection semantics unchanged
rcourtman
2fc47df47c