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docs(readme): disclose class-J axiom + 13/13 build posture (Refs standards#131) #43

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hyperpolymath merged 1 commit into from
May 20, 2026
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docs(readme): disclose class-J axiom + 13/13 build posture (Refs standards#131) #43

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Expand Up @@ -123,6 +123,32 @@ Gossamer is backed by formal research. The type system and its guarantees are ma

_Gossamer: A Linearly-Typed Webview Shell with Provable Resource Safety_ — link:docs/whitepapers/gossamer-arxiv-paper.tex[paper source]

== Formal verification

Gossamer's ABI is written in Idris2 with the proof obligations audited in
`PROOF-NEEDS.md`. Headline posture (as of `standards#131` close-out, 2026-05-20):

* *All 13 ABI proof modules build green.* `gossamer-abi.ipkg`
`idris2 0.8.0 --typecheck` passes 13/13 with `%default total`. Modules:
`Types`, `Layout`, `Foreign`, `Groove`, `CapabilityAuthenticity`,
`IPCDispatch`, `HandleLinearity`, `WindowStateMachine`,
`GrooveTermination`, `LayoutStability`, `IPCIntegrity`,
`PanelIsolation`, `ResourceCleanup`. Discharge ledger in `PROOF-NEEDS.md`.

* *One `believe_me` invocation*, isolated in
`src/interface/abi/PanelIsolation.idr` (`stringNotEqCommut`), class (J) —
a *principled assumption*, not unproven debt. It axiomatises the
commutativity of Idris2 0.8.0's opaque `prim__eq_String` primitive
(content-symmetric on every supported backend — Chez, Racket, Node, JS —
but not derivable in-language). Same trust posture as boj-server's
`Boj.SafetyLemmas` axioms over Char/String primitives. Reduction path:
external backend-assurance evidence (property-test harness against the
primitive), not constructive in-language proof.

* *No other unproven obligations remain in the audited surface.* The full
per-site rationale + reduce-the-trusted-base path are tracked in
`PROOF-NEEDS.md` ("Class-J axioms (trusted base)" section).

== License

PMPL-1.0-or-later — Copyright (c) 2026 Jonathan D.A. Jewell
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