diff --git a/AGENTS.md b/AGENTS.md
index 556717cd..ef6e63bf 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -270,6 +270,7 @@ fail-closed and only pauses when the agent actually proposed a reviewed output.
 │           ├── executor-e2e/ # Stage 3 safe-output E2E test harness (not a bundle; runs deterministic scenarios against a real ADO project and files a GitHub issue on failure)
 │           ├── prepare-pr-base/ # create-pull-request preparer (bundled to prepare-pr-base.js): Agent mode uses ADO diff metadata + bounded dual-ref fallback to make the merge-base reachable; SafeOutputs mode fetches only the target worktree tip
 │           ├── trigger-e2e/ # Test-only gate-spec / trigger-evaluation harness (not a bundle): mirrors Rust `Fact::ALL` in `gate-spec.ts`; `fact-catalog.gen.json` is generated by `export-fact-catalog` and drift-guarded by CI
+│           ├── compiler-smoke-e2e/ # Test-only compiler smoke orchestrator (not a bundle): stages the current compiler candidate as a `supply-chain.pipeline-artifact` across the five lock-file fixtures, pushes to a mirror branch, queues the registered definitions, and asserts they all go green; ADO pipeline definition lives in `tests/compiler-smoke-e2e/`
 │           └── shared/   # Shared modules across bundles (auth, ado-client, env-facts, types.gen.ts)
 ├── tests/                # Integration tests and fixtures
 ├── docs/                 # Per-concept reference documentation (see index below)
diff --git a/docs/ado-script.md b/docs/ado-script.md
index dbcb9021..7c9aadb6 100644
--- a/docs/ado-script.md
+++ b/docs/ado-script.md
@@ -112,6 +112,18 @@ pipeline** as runtime helpers. Today it produces thirteen bundles:
 > so the `gate-spec.test.ts` test can deep-compare `FACT_META` against the
 > Rust-side `Fact::ALL` registry, catching drift at CI time.
 
+> **Test-only, not shipped: `compiler-smoke-e2e`.** The workspace also contains a
+> `src/compiler-smoke-e2e/` orchestrator that stages the compiler candidate built by
+> the current PR or nightly `main` run as a pinned `supply-chain.pipeline-artifact`
+> across the five lock-file fixtures (canary, azure-cli, noop-target, janitor,
+> smoke-failure-reporter), pushes the staged candidate to a short-lived mirror
+> branch, queues the registered "candidate lane" pipeline definitions, and asserts
+> they all go green. It is **not** a runtime bundle: it is not part of the main
+> `build` chain, is listed in `NON_BUNDLE_DIRS` in
+> `src/__tests__/bundle-coverage.test.ts`, and the compiler never references it.
+> The corresponding ADO pipeline definition (that invokes this harness) lives in
+> [`tests/compiler-smoke-e2e/`](../tests/compiler-smoke-e2e/).
+
 ## What `gate.js` does
 
 `gate.js` is a single-shot Node program that runs as a step in the
@@ -565,6 +577,7 @@ scripts/ado-script/
 │   │   ├── fact-catalog.gen.json # generated by `cargo run -- export-fact-catalog`; deep-compared by gate-spec.test.ts
 │   │   └── __tests__/           # gate-spec drift tests and trigger-evaluation scenario tests
 │   └── executor-e2e/            # test-only: Stage 3 safe-output E2E harness (not a bundle; built to test-bin/executor-e2e.js)
+│   └── compiler-smoke-e2e/      # test-only: compiler smoke orchestrator (not a bundle); ADO pipeline definition in tests/compiler-smoke-e2e/
 ├── test/                        # End-to-end smoke tests (gate, import, exec-context-pr)
 ├── gate.js                      # ncc bundle output (gitignored)
 ├── import.js                    # ncc bundle output (gitignored)