Fuaran.Core.OpStream 0.29.0

Fuaran op-stream — type contract, canonical-JSON encoder, hash-chain primitive, and sink interface. The durable / replayable counterpart to the Fuaran.UI.Ops apply engine: every applied TreeOp surfaces as a hash-chained OpRecord against the configured IOpStreamSink. CanonicalJson.encodeNode doubles as the AI pre-emit self-check encoder (Fable-compatible). Apache-2.0 licensed.

Op-stream replay engine — folds OpRecord sequences through the Fuaran.UI.Ops apply engine to reconstruct any tree state. Companion to Fuaran.UI.OpStream.Abstractions. Apache-2.0 licensed.

Fuaran.Core.OpStream.Dag — a content-addressed branching/merging op-DAG over the same StreamWitness as the linear Fuaran.Core.OpStream: append/fork onto any node, merge two heads into a convergent node, verifyDag (parent-link integrity), and deterministic replay-to-head over a topological order. The linear op-stream is untouched (linear consumers take no new dependency). FSharp.Core only, Fable-clean.

Fuaran.Core.Lease — a generic lease/claim strand: claims over an abstract resource axis (Claim / Release / Expire) with a total apply / canApply where a conflicting claim is a typed rejection enumerating the current holder and the overlapping resources, a canonical wire codec, and a Fuaran.Core.OpStream StreamWitness — so lease history is an append-only, hash-chained, replayable, tamper-evident stream. The resource axis reuses Fuaran.Core.Tree's IdWitness (no new witness shape); expiry takes time as data (the host supplies "now"; Core reads no clock), so replay is deterministic. Generalises the coordination a multi-agent dispatcher hand-rolls. FSharp.Core only, Fable-clean.

Fuaran.Core.Column.Ops — a columnar op-algebra over Fuaran.Core.Column's Table (SetCell / SetColumn / InsertColumn / RemoveColumn / AppendRows / ApplyTransform) with a total apply / canApply, a partial invert (undo/redo), a structural Diff, a canonical wire codec, and a Fuaran.Core.OpStream StreamWitness — so table edits become an append-only, hash-chained, replayable, tamper-evident stream (the columnar analogue of the tree op-stream). No base type, no new witness field (the op DU is self-contained over Table; OpStream stays generic over its (apply, encode, decode) witness). FSharp.Core only, Fable-clean.