rdmsm4x-changelog-20260902-1557-tyrell-build10-macos-runtime-seams

rdmsm4x changelog — Tyrell Build 10 macOS shared-runtime seams

Time: 2026-09-02 15:57 EDT
Scope: isolated Tyrell source worktree only; no fleet host runtime changed.

Added the Build 10 compatibility checkpoint at /Users/richh/dev/_worktrees/tyrell-build10-macos-runtime-seams-20260902, commit 870d5b31067f198b226e486325a378f7947bf09f, so Tyrell can safely prove the future shared logging and read-only usage-client migration before a shared library release exists.

Files changed

Tests/E2E/Build10SharedRuntimeCandidateCompatibilityTests.swift
docs/architecture/2026-09-02-build10-macos-shared-runtime-seams.md
SESSION-STATE.md

Verification

Candidate-only injected-fake seam tests: 3/3 XCTest cases, exit 0; output archived at /Users/richh/dev/_handoff/tyrell-build10-macos-runtime-candidate-tests-20260902.log with SHA-256 fae99a596a49f106a1e2c2a2db26e723af888dac92a4858ca5b9c8bc3fd76bc0.
Normal Tyrell package test suite: 235 XCTest plus 386 Swift Testing cases, 621 total, zero failures; output archived at /Users/richh/dev/_handoff/tyrell-build10-macos-runtime-default-tests-20260902.log with SHA-256 588b42d096346b557e68959aaaf34e7fec8de76b97fc8471cd09106555961d81.
Package manifest restored and has no diff from the Build 9 base.

Boundary and undo

No canonical Tyrell or ecs0lib source, dependency pin, signing, app artifact, service, credential, network request, CloudKit state, or deployment was changed. The next consumer migration is blocked until the ecs0lib owner publishes a clean canonical revision exposing the reviewed typed APIs.

Undo is a revert of commit 870d5b31067f198b226e486325a378f7947bf09f in this isolated branch or disposal of this worktree; no running component needs rollback.