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session-title already registers a title projection unit; /resume now reads it instead of scanning logs: live rows from the registry snapshot, persisted rows from the durable checkpoint row (cachedSnapshot, zero I/O), and only rows without a usable checkpoint pay a coldSnapshot — checkpoint plus readFrom tail, written back so the next scan is metadata-only. Cold reads are bounded by the new resumeScanConcurrency config; compositions without the cache fall back to the bounded readTitleSnapshots batch. The TUI overlay mounts the projection registry, storage, and projection-cache rows over the same storages root the web surface uses, so checkpoints serve both.