docs: clean up L3 QueryExpr; add schema flow + L4 SketchExpr + system I/O - #1

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docs/l3-ir-cleanup-and-schema

May 5, 2026

Commits on May 2, 2026

docs: clean up L3 QueryExpr; add schema flow + L4 SketchExpr + system I/O

zzylol
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8983bb2
docs: spelling — artefact -> artifact

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88e48c1
docs: bring TopK back as AggIntent; small text fixes

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661ca8c
docs: tighten DAG-vs-tree framing — multiple parents share state

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2253898
docs: make per-node I/O table self-contained

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5ef19da
docs: per-node input/output spec for SketchExpr (L4 IR)

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5ef0547

Commits on May 4, 2026

docs: rename scenario→deployment model; introduce Executor type; add glossary

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4a55e0b
docs: split L3/L4 IR — intent_algebra (L3) vs sketch_algebra (L4)

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5d73f13
docs: clarify Schema.unique_keys is opt-in metadata for reuse-aware planning

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58f0af4

Commits on May 5, 2026

docs: add end-to-end example tracing one query through all five layers

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e742498