Implementation reviews and executable validation evidence live here. The storage contract lives in specs/storage.md.
- Persistence — RAM, fjall, redb, tier routing and the initial Cybergraph/Cyber integration boundary review.
- Fjall batch journal-write repair — vendored 2.11.2 error-path fix, source provenance and partial-journal regression evidence.
- Durable shard storage — implemented fallible contract, atomic backend commits, recovery and tier failure tests; remaining archive and node integration work.
- Shared application and shard database — one transaction owner, Fjall working storage, combined commits and explicit legacy redb import.
- Commit cost, launch row 43 — flat recommit vs incremental keyed-trie commitments, 10k–1M links and the pussy replay.
- Dimension version 2 — the bostrom genesis root unblocked by the trie default (eager trie: 1,790 s, 8.57 GB), the two inflations measured, the bbg-only bostrom link replay; superseded as a rule set by version 3, kept as evidence.
- Dimension version 3 — the root chain's genesis version (nonce, versioned trie leaves, no zero rows), deferred hashing, chunked Brakedown measured and rejected, both burials committed.
- Signals key, dimension version 3 rule 7 — launch row 9: signals keyed by H(neuron ‖ step), the step-0 collision and the acceptance-order dependence removed, no blessed root moved.
- Dimension version 4 — positions — the focus economy's bbg side (soft3 chain-economy §3): card record author, valence, since; reserved stake and focus keys; the axon index and epoch snapshot; every non-empty root moves.