feat(query): existence tests — scoped predicates, M2M, error surfaces & docs (slices 2–4) - #323

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feat/existence-tests-315-317

Jul 18, 2026

Commits on Jul 18, 2026

feat(query): scoped existence tests — inner predicates, nesting, cross-scope guard
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c652ce6
feat(query): M2M existence tests — the two-hop correlation path
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ee216a3
feat(query): existence-test error surfaces and docs — the feature's edges
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e3e07da