Proposal: v3 metadata storage redesign#842

Merged

termoshtt merged 13 commits intomainfrom

proposal/metadata-storage-v3

Apr 27, 2026

Commits on Apr 27, 2026

Draft metadata storage proposal for v3

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Address Codex review and clarify ordering vs. proto

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Restructure proposal around Series-based collections, drop stages

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Adopt back-reference design: keep wrapper getters, route through SoA

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Adopt Literal+overload kind dispatch and address cross-ID JOIN safety

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Self-review pass: fix naming, fill gaps in scope and semantics

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Adopt include= parameter and v2-compatible default on *_df

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Resolve Q2 (removed_reason) and Q5 (subscripts long format)

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Resolve Q1, Q4, Q6, Q8; split into Resolved decisions and Open questions

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Resolve Q7: no API to remove constraints from a collection in v3

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Drop ConstraintMetadataView; collapse to two types in metadata layer

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Resolve Q3 (insert_with) and reorder by original numbering

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Final-review pass: parse normalization exception + Evaluate/Sampled task

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