docs(PROGRESS): 2026-05-27 — asapedge mvp validation + whole-system review/fix

[zzylol]

Updates PROGRESS.md with today's two work streams:

1. asapedge mvp-multinode validation — drove the fused asap_edge stack from 2/6 → 6/6 warm query families; 5 root-caused bugs fixed (HLL sparse decode, KLL k=0, item_label projection, TopK aggregate_by, CMS query surface); merged tune: fake-exporter cardinality down (5K aggregate target, was 25K+) #352/asapedge sketch stack: CountSketch heap/topk + wire-tag fix + mvp-multinode config #463/delta transmission of octosketch #64.
2. Whole-system code review + 5-agent parallel fix — 4-agent review → fixed all findings via 5 parallel agents → integrated + re-validated 6/6 (caught + fixed the TopK with_heap regression); merged feat(delta): implement delta transmission over time windows and series #65/edge: CountSketch dim-validation + nil-guards, drop counters, warm-lateness, cache pruning, hot-path scratch (review follow-ups) #464/fix: static agent placeholder uses 5-sketch routing-connector pipeline (was single ddsketch) #353.

Docs-only change.

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