Jig + FLOW

Suspended experiment recovery index

This non-normative file records only deleted work that may inform a future vertical. It is not a roadmap, a compatibility promise, or a source of current interfaces. Git is the archive: inspect old invariants and tests, then reimplement the smallest needed behavior against the current specifications. Never restore or cherry-pick a former subsystem wholesale.

6aa93e1 is the last common tree containing the Jig-side experiments below; 06eac5d removed them from the direct alpha. A commit:path reference can be read with git show commit:path.

Evidence worth reconsidering

AreaRecovery landmarksWhy suspendedReconsider only when
Exact child flow/callImplementations 80e8113, 132285d, 2469eb8, and fb52409; reviews 6aa93e1:docs/design-review/143-deterministic-child-flow-slice.md and 6aa93e1:docs/design-review/144-deterministic-child-flow-closure.mdIts private lifecycle, persistence, and catalogue machinery had no public routing consumer.One approved closed-routing vertical needs one exact admitted child call.
Journal and admitted HooksImplementations 2fb9578, 3d87b0a, 1d74f86, and 9d6efdc; reviews 6aa93e1:docs/design-review/146-private-journal-effect-closure.md, 6aa93e1:docs/design-review/147-private-hook-authoring-boundary.md, and 6aa93e1:docs/design-review/148-private-hook-runtime-frontier.mdDurable facts and Hook-derived Runs enlarged admission and storage before an Event Source existed.One real external fact must activate one admitted Run durably. Start from that outcome, not from the former Journal schema.
Durable ServicesImplementations 0fcf403, 28b719d, 3f84952, and 1586625; reviews 6aa93e1:docs/design-review/149-private-service-hosting-frontier.md, 6aa93e1:docs/design-review/151-private-service-hosting-checkpoint.md, 6aa93e1:docs/design-review/155-private-mixed-composition-checkpoint.md, and 6aa93e1:docs/design-review/162-private-mixed-loss-checkpoint.mdOne private stateful provider proved lifecycle semantics, but no alpha application needed a long-lived Mount and portable conformance remained incomplete.A concrete application requires process-local state across calls, and the portable profile has independent conformance evidence.
Agent skill projectionImplementation 66821ba; reviews 6aa93e1:docs/design-review/157-private-agent-projection-checkpoint.md and 6aa93e1:docs/design-review/158-agent-provider-boundary.md; source 6aa93e1:packages/jig/src/internal/private-agent-run-projection.tsThe logical projection proof had no retained, authenticated, contained Agent provider.One operator-owned exact provider can perform a contained one-shot call with durable no-redispatch semantics.
Semantic Choice and changing Run candidatesImplementations 8337350 and 60725c1; reviews 6aa93e1:docs/design-review/159-private-semantic-choice-checkpoint.md and 6aa93e1:docs/design-review/160-changing-run-universe-disposition.mdPure allowlisted selection had neither a durable Agent owner nor a shipped routing consumer.Exact Agent invocation and one deterministic admitted candidate set meet inside a closed router.
Python direct executionPlanner 8a9014d, containment sequence through 820b2d4, and source 6aa93e1:packages/jig/src/internal/python-direct-run.tsThe alpha deliberately selected one runtime and one execution path.A real Python FLOW package justifies a second exact recipe after the Bun path is stable.

Negative boundaries to preserve

  • Jig Graph over Sley: review 6aa93e1:docs/design-review/161-private-jig-route-lowering.md records the successful negative result. The deleted candidate needed 478 implementation and 343 test lines to wrap roughly 45 lines of direct Sley, with no stored graph consumer. Retry only when a real independently stored graph contains meaningful non-router or nested behavior that direct Sley cannot express clearly.
  • Privileged cgroup backend: the proof starts at 4ab1caf; its last source and review are b9f9473^:packages/jig/src/internal/linux-cgroup-backend.ts and 6aa93e1:docs/design-review/105-phase-2-linux-cgroup-proof.md. b9f9473 replaced it with the canonical rootless path. Reuse hostile-test lessons, but never restore its host authority as a fallback.
  • Nix runtime retention: the lab branch is experiments/nix-runtime-retention at d34ccb6; quarantine and correction commits are d6a0ad2 and 7ebd25f; disposition is 6aa93e1:docs/design-review/130-nix-experiment-disposition-and-next-slice.md. Nix may be reconsidered only as an explicitly selected project-environment integration. It must not become Jig runtime retention, dependency locking, package-manager lifecycle, or FLOW vocabulary.
  • Compiled-Bun distribution: review 6aa93e1:docs/design-review/199-compiled-bun-runtime-feasibility.md proves the runtime mechanism; cb5b343, f75fb56, and 7aa66d8 record the later installed candidate and its licensing blocker, visible together at 47ad9f6:packages/jig/THIRD_PARTY_NOTICES. Runtime feasibility is not lawful distribution. Reconsider embedding Bun only if a reviewed, reproducible source-and-relinking solution satisfies every applicable license obligation and remains simpler than consuming one exact release-owned runtime package.