Fuaran.Core.Column 0.3.0

Fuaran.Core.DataFrame — the declarative-compute layer over Fuaran.Core.Column: a serializable dataframe-transform algebra (Transform + ColExpr, full v1 verb set — filter/project/derive/groupBy/join/window/pivot/unpivot/sort/distinct/limit/union), a pure reference evaluator with pinned null/coercion/order/float semantics (the cross-host parity contract), and a canonical wire codec. transformLaws (in Fuaran.Core.Conformance) certifies any host evaluator byte-identical to the reference. Also carries the typed delta representation for the column layer (TableDelta: rows added/changed/removed addressed by a caller-supplied identity witness, column invalidation, and full-refresh as the top element) with an associative composition and a canonical wire codec, and the incremental evaluation seam over it: a pipeline evaluated against a delta rather than from scratch, with per-step incrementality declared as data (propagate / maintain-state / typed fall-back), a measured recompute footprint, and certified equality with the reference evaluator for every (base, delta) pair. FSharp.Core only, Fable-clean.

Fuaran.Core.Validator — the rule-family framework: defect record, severity, family registration, walker scaffolding, the PackRule (pack, ruleId) content-pack extension point, and the cross-host defect-code byte-parity discipline. All rule content stays domain-side. FSharp.Core only.

Fuaran – AI-emittable F# UI language. An emission is bounded data over a closed vocabulary rather than code or markup, so a malformed tree is a typed refusal with a stable code and a path rather than a plausible-looking render. Fuaran.UI.WireLimits expresses the wire format's normative resource limits (node depth, JSON depth, string and array length, total node count) that keep a decode of untrusted input bounded. Apache-2.0 licensed.

Fuaran tree-op apply engine — the pure type contract (the TreeOp DU + ErrorPayload + ApplyHint, §4g). FSharp.Core-only and Fable-portable: the shared types every op-stream / telemetry / renderer consumer needs WITHOUT pulling in the apply engine + JSON decoder (which are themselves Fable-portable, but belong at the host seam rather than in every consumer's graph). Apache-2.0 licensed.

Fuaran tree-op apply engine — §4g op vocabulary + Result-returning apply against typed Node<'Msg> trees, with §4d AI-recovery-shaped error payloads. The JSON decoder is default-deny by shape: an undeclared or malformed emission is refused with a typed DecodeError carrying a stable code and a path, and a payload breaching the wire format's §21 resource limits is refused as LIMIT_EXCEEDED before the recursion that would breach them. Apache-2.0 licensed.