[ThorFuchs]

Experimental — not released

Add package-private structural-set and exact numeric-matrix views to existing JSONInspection. Set representatives are original first-occurrence array indices; equality delegates to core JSONComparison under N1's original cumulative ledger. Matrix validation checks every row/cell, retains exact source numbers and uses orientation metadata for transpose, including 2×0 → 0×2.

No public declaration/product/dependency additions, graph/store engines or release actions. Constructors remain fileprivate. Existing Navigation56/Inspection95, ten products, 49 core caps, 126 maintenance identities and original ownership proofs are preserved. Graph/store ADRs and data-premise fixtures are design only. Branch A owns G4; this PR makes no performance claim.

Actual qualification

• Frozen implementation aad4a35: all eight hosted Native/Linux jobs passed (Native39125856096, Linux39125856156), including Git-free reproduction, full825 native/809 Linux functions,325 parameter invocations, ASan and53/52 sharing functions under TSan.
• New46 acceptance identities (SSET18/MAT18/CORE10) plus existing76 Inspection functions passed Debug/Release/ASan; strict-memory passed. Original2-positive/20-negative ownership codegen remains; D0 adds2-positive/10-negative and7 runtime cases/configuration. Private P2 consumer6 cases/configuration and12 ordinary isolation/immutability rejections passed.
• WASI Debug721/Release721 functions with288 parameters passed, with49 caps, Node independent suites and targeted WasmKit122 Inspection functions plus public consumers. Debug is explicitly reused from an unchanged-source attempt whose later Release build hit ENOSPC. Malformed incremental outputs were preserved, discarded and Release rebuilt clean. The original failed full invocation is not relabeled; three runtime benchmark diagnostic samples were not run in this semantic track.
• Nine-library iPhoneOS/iPhoneSimulator SDK27.2 strict Release compile/link passed; no physical/runtime claim.
• Compiler public graphs unchanged; all1172 authored declarations documented. Independent20-file fixture oracle and19 rejecting-harness cases passed.

Current-main reconciliation

Current head6aa5fab incorporates already-merged main1a0306d documentation only. All Package/Sources/Tests/Scripts/AGENTS bytes are identical to the fully qualified predecessor; only README and AgentDeveloperKit documentation changed. Fresh current-head DocC/privacy, byte-equal Git-free source reconstruction and compiled public16-case consumer passed. Refreshed Native39129720128/Linux39129720063 passed all eight jobs at head6aa5fab. Their actual artifacts are materialized and audited against the reconciled1305-file source snapshot; all raw failures/retries remain separate. The PR stays draft.

Current actual source archive SHA256: aed956274bd91457180218751fac30ab911023b61f326000948bc6ae4e2e8629. Predecessor59d045... archive/receipts are retained immutably. The private manifest-backed return contains actual source bytes and materialized receipts/logs; large raw provider/cache bytes are separately indexed with digests. Qualification contract: Documentation/Architecture/StructuralIntelligence/NAV9/PrototypeQualification.md.

No merge/ready/tag/publication is authorized by NAV9. Preserve the separate composition/developer-kit/performance worktrees and stable1.6.1.