Fixes B-3/C-3. §9.1 structural per-tenant partitioning of the derived tier
(no shared cross-tenant cache; read-time filtering as defence-in-depth;
reconciles I-2+L5 per partition); new invariant I-13. §8.1 history stays
recoverable AND bounded (gc/repack, squash-compaction of churn preserving
recoverable endpoints, per-shard offload, anti-abuse hooks).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Fixes D-2/D-3/D-4. §7.3 effective-vs-own provenance (page envelope + span
deltas, near-zero per-span cost). §8.4 projection trivial-by-default
(plain lazy replication), derivation/liveness/view-registry as extension
points only for the computational/typed tail. §11 adds policy/ + provenance/
as dependency-free leaf rails (mechanism never in a rail), tightened import rules.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Fixes D-1. ~6 independent core axes (substrate, write-granularity, opacity,
envelope, access, liveness) with the rest implied via published rules that
forbid impossible profiles; a small named axis-interaction table is the
degradation contract (proof obligation behind 'core logic written once').
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Fixes C-1/C-2. Incremental change-driven maintenance (notify->delta) is
primary; full rebuild is a rare, envelope-respecting, concurrent fallback
(not required cheap). Equivalence via blocking/LSH candidate-gen + verify +
incremental maintenance, replacing O(N^2). Index is derived, per-tenant.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Fixes bug B-2. States the guarantee (read-your-writes for journal-owned
coordination-canonical state; causal across the derived tier; eventual+
freshness-labelled for sharded inputs). Conflict detection+representation =
core mechanism, resolution = policy. Overlay-apply-under-drift semantics
(fast-forward / three-way / refuse+re-present) and journal ordering.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Fixes bug B-1: page identity is a stable assigned handle (survives edits),
not a content fingerprint; fingerprints identify versions/content for the
equivalence mechanism. Chain: identity -> placements -> equivalence. (§7.2)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Records the critical review (history/260615-...) and establishes SHARD-WP-0005
to fold its findings (A-1, B-1..B-3, C-1..C-3, D-1..D-4) into the blueprint:
correctness (state re-frame, identity/equivalence split, consistency model),
scale (incremental-first union, equivalence indexing, cache invalidation),
elegance (orthogonal spectra, layered provenance, common-case projection,
policy module), security/history scaling, and a known-open-problems section.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
