ABI: make Idris2 proofs genuinely compile + add machine-checked theorems#27
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The governance/licence-consistency check requires an SPDX-License-Identifier header on the LICENSE file and a `license` field in the manifest. The LICENSE body is MPL-2.0 text, so stamp `SPDX-License-Identifier: MPL-2.0` (matching the actual body) and set `license = "MPL-2.0"` (replacing `license-file`). Verified with standards/scripts/check-licence-consistency.sh (passes). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DF9CcCuL4YJoqs26eHsYiA
Make the repo's licensing single and consistent, matching the wokelangiser reference policy and the merged iseriser pattern: - Remove contradictory PMPL-1.0-or-later / Palimpsest self-claims from README badges/footers, QUICKSTART, RSR_OUTLINE, STATE-VISUALIZER, and machine-readable governance (META, stapeln, deny.toml allow-list, copilot/AGENTIC SPDX directives, Trust/Must LICENSE-content checks, per-project CLAUDE.md). - Encode the docs split in REUSE dep5: *.adoc/*.md/docs/** -> CC-BY-SA-4.0, everything else -> MPL-2.0. - READMEs show MPL-2.0 (code) + CC-BY-SA-4.0 (docs) badges; full texts live in LICENSES/; root LICENSE stays MPL-2.0 for GitHub's licence chip. Preserves legitimate non-self references: cargo-deny's AGPL deny-list, the "never use AGPL" estate policy, and the Contributor Covenant CoC. Verified: standards/scripts/check-licence-consistency.sh passes; no residual PMPL/Palimpsest self-claims remain. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DF9CcCuL4YJoqs26eHsYiA
The src/interface/abi/{Types,Layout,Foreign}.idr scaffold was never
compiler-checked. This makes the oblibeniser ABI proofs typecheck cleanly
(zero errors, zero warnings) under Idris2 0.7.0 with genuine proofs — no
believe_me/postulate/holes.
Types.idr:
- DecEq Result: replace uncompilable `decEq _ _ = No absurd` with all 56
explicit off-diagonal `No (\case Refl impossible)` cases (8 constructors).
- thisPlatform: drop the `%runElab` stub (needs ElabReflection) for `Linux`.
- createHandle: solve the `So (ptr /= 0)` auto-proof via `choose` instead of
leaving `Just (MkHandle ptr)` unsolved.
- Remove the non-compiling CPtr (`Bits (ptrSize p)`) and the vacuous
HasSize/HasAlignment/cSizeOf/cAlignOf block (it pattern-matched on Type and
proved nothing); the real size/alignment guarantees live in Layout/Proofs.
- Remove the duplicate `namespace Foreign` that collided with Foreign.idr.
Layout.idr:
- paddingFor: `minus` instead of Nat subtraction `-` (no Neg for Nat).
- Add sound `decDivides`/`decFieldsAligned`; replace `alignUpCorrect`'s bogus
`DivideBy ... Refl` with decidable `alignUpDivides`.
- checkCABI: build a real CABICompliant witness via decFieldsAligned instead
of the `?fieldsAlignedProof` hole.
- offsetInBounds: honest `Maybe (So ...)` via `choose` (the universal `So`
return type was unsound).
- Concrete StructLayout values supply explicit `{sizeCorrect = Oh}` and
`{aligned = DivideBy k Refl}` erased proofs.
- *LayoutValid proofs: discharge the holes with explicit DivideBy witnesses;
qualify layout names as `Layout.x` in types to avoid implicit-binding.
Proofs.idr (new): machine-checked theorems —
auditEntryCompliant / stateSnapshotCompliant / undoStackCompliant (built
directly from per-field DivideBy witnesses), plus result-code pins
okIsZero / notReversibleIsFive / inverseProofFailedIsSeven.
Build layout: move flat files to src/interface/abi/Oblibeniser/ABI/ and add
oblibeniser-abi.ipkg. `idris2 --build oblibeniser-abi.ipkg` exits 0 cleanly.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DF9CcCuL4YJoqs26eHsYiA
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Idris2 ABI proofs — genuinely compile + machine-checked theorems
Part of the family-wide ABI-proofs review. The hand-written ABI did not typecheck under Idris2 0.7.0; this makes it real and verified, following the merged iseriser reference.
Systemic fixes:
decEq _ _ = No absurd→ explicit off-diagonal cases;{auto 0 nonNull}smart constructors →choose-based;paddingFor-→minus; realdecDivides/decFieldsAlignedreplacing?fieldsAlignedProof; honestoffsetInBounds;thisPlatformde-%runElab'd; buildable nested layout + ipkg; newProofs.idrwith real theorems.Verified:
idris2 --buildclean (0/0); adversarial re-verify found nobelieve_me/postulate/holes.🤖 Generated with Claude Code
Generated by Claude Code