feat: interchangeability gate (run-parity, 8/8 on both providers) + first CI workflow (codex-parity slice 4) - #150
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…ows per provider + the mixed cases) Codex-parity slice 4a. The Codex integration was validated with only Codex registered; the first mixed run broke. This gate spins an isolated daemon (own RELAY_DIR/port, real gate/consent/broker MCP/models) and runs, once per signed-in provider with the app's grant restricted to that provider: a plain completion (implicit model must stay in grant), an agentic read through a broker MCP tool (tools ARE portable via the broker), and write consent approve-then-deny. Then the two mixed cases: a Claude-only app with the global default on Codex must stay in its grant (the 2026-09-07 Brandbrain bug), and a dual-granted app with a Claude-only tool must route its agentic turn to Claude, honour the Codex default for plain turns, and refuse an explicit Codex request by name. Routing is asserted from the daemon's own `done` result (`result.model` is the resolved model) — not inferred. A provider that isn't online is a SKIP, never a silent pass. `npm run try-parity`. First real run: 8 PASS / 0 FAIL on claude-code + codex. Also fixes the shared harness client: `stream()` used an async Promise executor, so a daemon-time refusal of the claude_stream REQUEST (before any stream existed) was an unhandled rejection that killed the whole harness process instead of rejecting the promise the caller could assert on. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…ss Swift tests (no sign-in needed) Codex-parity slice 4b. There was no CI. A hosted runner has no Claude Code or Codex account, so this runs the half that needs none: protocol/sidekick/sdk builds, workspace typecheck, the fixture-backed daemon suites (routing incl. the mixed-provider and tool pre-flight cases, the Codex App Server contract, storage) on ubuntu, and the LauncherRouting + ConsentRouting headless tests on macos. The real-provider matrix is `npm run try-parity` on a signed-in Mac, now a P0 line in docs/GO-LIVE.md. Motivation on record: a red `tsc` shipped past a tests-only gate earlier today. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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What
Codex-parity slice 4.
examples/harness/run-parity.mjs— the interchangeability gate. Isolated daemon, real gate/consent/broker MCP/models. Per signed-in provider (grant restricted to it): plain completion, agentic read via a broker MCP tool, write approve→deny. Then the mixed cases: Claude-only app with a Codex global default stays in grant; dual-granted app + WebSearch routes agentic turns to Claude, plain turns to the Codex default, and refuses an explicit Codex request by name. Routing asserted fromresult.model. SKIP is reported, never silent.npm run try-parity.dev-extension.mjsfix — a daemon-time refusal ofclaude_streamcrashed every harness (async Promise executor swallowed the rejection)..github/workflows/ci.yml— first CI: builds, typecheck, fixture daemon suites (ubuntu), headless Swift tests (macos). No provider sign-in needed.docs/GO-LIVE.md— P0: parity gate green before release.Evidence
dual.parityplain →gpt-6-astra, agentic →sonnet).🤖 Generated with Claude Code