2026-08-31 — The ingest stage holds a write-aside MARKER, not the rendered

2026-08-31 — The ingest stage holds a write-aside MARKER, not the rendered reading records; capture.IngestReading writes them against the real ledger. Ground: that writer mints every item id under the ledger lock precisely so its collision probe sees the tree it is about to write into, and staging into a second issues root would move the probe off the real ledger. The orphan sweep rolls the run back instead, bounded by the rdi-N.md filename grammar. Rejected: staging rendered records per spc-63's first draft.