[ThorFuchs]

This draft preserves the exact native composition checkpoint combined with the admitted developer kit on starting main e0a41854.

Frozen head: 1bf495354ce5f22b195ac8a9920a270cbc63e501; tree: 16eae54a8a00ca79469ec6682f05fabe52f299d5. All22 kit paths match starting main; runtime, root tests, fixtures, manifest and workflows match PR #58/R1. The only additional edit corrects the documentary fence-preservation wording. PR #36 and frozen PR #58 remain preserved.

Qualification of this exact tree:

• All9 product contexts passed: Native39115830594 and Linux39115830559. Synthetic execution 6ec50afd has the identical tree and1270-file manifest.
• All7 local lanes passed: composition/proof, full Native, safety, docs, archive and WASI. Native/Linux/WASI roots remain722/706/618 with325/325/288 parameter invocations. The Git-free archive replays all40 Native commands; its deterministic SHA256 is 78e79634e700f09093fa4ec74e08046024b9b57b8666ba6101856ba0f3858e5d.
• Public Debug/Release proofs verify native completion50 work/424 logical bytes, per-document577+152→729, adapter197/664, typed terminal errors/cancellation, all49 metrics, two causal mutants and restoration. No RSS or arbitrary caller-instruction cap is claimed.
• Nine DocC catalogs cover1122/1122 authored declarations. The exact guide fence compiles/runs separately. Both installed Swift6.4 distributions reproduce16 ordinary object diagnostics,12 compiler aborts and2 valid objects from30 probes. Tested explicit-borrow synchronous helpers/direct calls are the limited supported surface; universal U02 remains unqualified.

Acceptance holds:

• Performance39115830586 stopped after the first baseline process: post-idle98.56/82.20/59.67% failed the unchanged90% requirement. No candidate comparison, retry or exception.
• Main independently advanced to 0cb8ca40 via Complete Navigation V1 snapshots and public tree/sparse-table projections #59 during qualification. Its66-path NAV8 delta changes APIs/tests/CI/source inventory and causes this PR to conflict. The frozen evidence remains valid for16eae only. A separate bounded reconciliation is needed; this draft was not silently rebased.

Provisional engineering checkpoint only: no acceptable/adopted upstreamSHA, ready conversion, protected merge, tag, release or downstream pin change is requested. Private evidence remains outside Git.