abf8c5ae9c84a5a0e180e79f2a78c452c51a0035
ADR-010 (new): the Backend trait's I/O seams pinned before any code — 'get' returns a crate-internal read cursor (kv engines materialize; 'local' pread loop; pg-lo lo_get windows), 'put' has two named forms (whole-value kv / staged-put large); GC state is store-core-owned via a crate-internal contract-tested engine-state seam on the SQL-backed engines (backends never learn liveness — ADR-005 verbatim); the store core holds the joint entry+pin transaction (corrects ADR-009 §2's ownership statement); kv-tier fleet-validity rule added (mirror of ADR-008 §3); ops pin-token TTL race resolved (the token IS the pin; renewal rides have/re-put; pause-past-TTL falls to delete-then-recover); feature graph pinned (pg-lo does not imply postgres). ADR-011 (new): vocabulary pinned — tier (contract, exactly two) vs engine (concrete impl, exactly five); store instance / node / fleet split (fleet = pool-sharing, not node count — fixes requirements.md's self-contradiction with REQ-2); mem demoted from 'backend'/'testing tier' to the kv tier's third engine (contract-reference engine); fs tier renamed 'large' including the feature name (last free moment before code exists); constructor modes pinned (dual-tier default, kv-only, mem-only) plus the composite fleet-validity predicate. Consistency round across all specs and ADR-003/004/007/008/009: stale pg-lo passages resolved per ADR-009's supersession; ADR-008 owner 'node id' → store-instance id; threshold wording corrected (conservative edge, not midpoint, of the 128-256 KiB crossover zone); SweepReport shape specced; mem classification unified; 008/009 ADR files renamed to match the tier rename; README deferral-policy recap aligned (third category = decided-but-sequenced work, not a parking kind); POC crate list completed. Verification: two independent architecture review rounds (the first found 4 criticals — unpinned trait I/O shapes, missing fleet-state seam, node/fleet self-contradiction, pin-token/TTL conflict — all resolved; final round: zero criticals); all markdown links resolve; ADR tables complete (11 ADRs).
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