OP#1 (shard migration write safety): chaos-test scope documented; anti-entropy
as the mitigation is complete. Bead miroir-zc2.1 closed.
OP#2 (Raft vs Redis): full crate survey + prototype + benchmark. Decision:
Redis wins, revisit before v2.0. Bead miroir-zc2.2 closed; docs in
docs/research/raft-task-store.md.
OP#3 (resharding 2× load): benchmark confirms 2.00× amplification across all
corpus sizes; CLI schedule-window guard implemented. Bead miroir-zc2.3 closed;
docs in docs/benchmarks/resharding-load.md.
OP#4 (score normalization): Kendall τ validation; score-based merge fails (τ=0.79),
RRF fails (τ=0.14), DFS preflight passes (τ=0.98). Bead miroir-zc2.4 closed;
DFS implementation tracked in miroir-yio; docs in
docs/research/score-normalization-at-scale.md.
OP#5 (dump import variants): compatibility matrix published at
docs/dump-import/compatibility-matrix.md. Bead miroir-zc2.5 closed.
OP#6 (arm64): deferred to v1.x+. Implementation roadmap expanded in
docs/plan/plan.md (commit 7f03fe6). Bead miroir-zc2.6 remains open as a
standing placeholder — to be closed only when arm64 is a live deliverable.
Also: minor unused-variable warning fixes in task_registry.rs, redis.rs,
sqlite.rs; add k8s/openbao-policy.hcl (ESO least-privilege policy for §9);
proptest regression baseline for sqlite task_store.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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