diff --git a/docker-compose.yml b/docker-compose.yml
index 0a87f6c33..6a1f668a8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -106,8 +106,8 @@ services:
       context: ./docker/contextual-orchestrator
       dockerfile: Dockerfile
       args:
-        CONTEXTUAL_ORCHESTRATOR_SOURCE_REVISION: 2712827bfebd8be39e25c24924ad1f18522fd5f9
-    image: ${COMPOSE_PROJECT_NAME:-lineageweave}-orchestrator:2712827bfebd8be39e25c24924ad1f18522fd5f9
+        CONTEXTUAL_ORCHESTRATOR_SOURCE_REVISION: 3558a9a3aeb985282b255fcd80bb2201c19ae54b
+    image: ${COMPOSE_PROJECT_NAME:-lineageweave}-orchestrator:3558a9a3aeb985282b255fcd80bb2201c19ae54b
     env_file:
       - ${HOME}/.env
     environment:
diff --git a/docker/contextual-orchestrator/Dockerfile b/docker/contextual-orchestrator/Dockerfile
index 68c2a2857..73694e3df 100644
--- a/docker/contextual-orchestrator/Dockerfile
+++ b/docker/contextual-orchestrator/Dockerfile
@@ -4,7 +4,7 @@
 ARG MATURIN_BUILDER_IMAGE=ghcr.io/pyo3/maturin@sha256:b6c8b59a0170b77eb31a35b56034abd39972483ad0ebfff344deaa42a85f3bd3
 FROM ${MATURIN_BUILDER_IMAGE} AS token-builder
 
-ADD --checksum=sha256:0220f0cff25446c38260cb4cd10be5de7d4b5dca5b36ae5dd0b7eb49cef625fd https://github.com/ContextualWisdomLab/contextual-orchestrator/archive/2712827bfebd8be39e25c24924ad1f18522fd5f9.tar.gz /tmp/contextual-orchestrator.tar.gz
+ADD --checksum=sha256:8dcd15b023aa1205a091d7826e278713d43bc1981dbd6a7189a7382e7f69cad3 https://github.com/ContextualWisdomLab/contextual-orchestrator/archive/3558a9a3aeb985282b255fcd80bb2201c19ae54b.tar.gz /tmp/contextual-orchestrator.tar.gz
 RUN mkdir -p /build/contextual-orchestrator \
     && tar -xzf /tmp/contextual-orchestrator.tar.gz --strip-components=1 \
         -C /build/contextual-orchestrator \
diff --git a/docs/adr/0083-orchestrator-runtime-commit-pin.md b/docs/adr/0083-orchestrator-runtime-commit-pin.md
index b88e26069..6040889c2 100644
--- a/docs/adr/0083-orchestrator-runtime-commit-pin.md
+++ b/docs/adr/0083-orchestrator-runtime-commit-pin.md
@@ -15,7 +15,7 @@ multi-agent.
 ## Decision
 
 `docker/contextual-orchestrator/Dockerfile` pins the downloaded archive to
-commit `2712827bfebd8be39e25c24924ad1f18522fd5f9` from upstream PR #857.
+commit `3558a9a3aeb985282b255fcd80bb2201c19ae54b` from upstream PR #857.
 The candidate pin supplies exact `Retry-After` admission deferral,
 rate-budget-derived readiness polling cadence, and endpoint-scoped structured
 admission. Readiness now measures both the internal JSON-Schema judge and the
@@ -60,6 +60,8 @@ The runtime contract is:
 - Asynchronous provider-readiness jobs declare the positive integer polling
   cadence derived from the server's configured admission window; consumers do
   not invent a polling interval.
+- One candidate's bounded probe failure records that candidate as not ready;
+  it does not discard successful readiness evidence from other candidates.
 
 ## Consequences
 
diff --git a/docs/product-technical-gap-baseline.md b/docs/product-technical-gap-baseline.md
index 531845a5b..f4041e314 100644
--- a/docs/product-technical-gap-baseline.md
+++ b/docs/product-technical-gap-baseline.md
@@ -8,7 +8,7 @@
 > exact-head evidence before this overlay is
 > `760d05896f96e5ce7fb9df0e4b62369448913fbd` and remains candidate-only.
 > Its contextual-orchestrator runtime is pinned to open upstream PR #857 exact
-> `2712827bfebd8be39e25c24924ad1f18522fd5f9`; this candidate is not
+> `3558a9a3aeb985282b255fcd80bb2201c19ae54b`; this candidate is not
 > protected-main evidence.
 > The open queue has 14 PRs:
 > #783, #782, #781, #780, #778, #774, #772, #771, #770, #702, #679, #672,
diff --git a/tests/test_documentation_hygiene.py b/tests/test_documentation_hygiene.py
index c0c14f5cf..18255b7ed 100644
--- a/tests/test_documentation_hygiene.py
+++ b/tests/test_documentation_hygiene.py
@@ -118,7 +118,7 @@ def test_role_catalog_identity_migration_is_wired() -> None:
 
 def test_orchestrator_runtime_pin_matches_adr() -> None:
     """The image pin and ADR must describe the same immutable upstream commit."""
-    expected_embedding_contract_commit = "2712827bfebd8be39e25c24924ad1f18522fd5f9"
+    expected_embedding_contract_commit = "3558a9a3aeb985282b255fcd80bb2201c19ae54b"
     dockerfile = (
         _ROOT / "docker" / "contextual-orchestrator" / "Dockerfile"
     ).read_text(encoding="utf-8")
diff --git a/tests/test_runtime_image_revision_contract.py b/tests/test_runtime_image_revision_contract.py
index f990c1130..a304277eb 100644
--- a/tests/test_runtime_image_revision_contract.py
+++ b/tests/test_runtime_image_revision_contract.py
@@ -37,7 +37,7 @@ def test_compose_passes_revision_to_all_product_images() -> None:
     ) == 4
     assert (
         "CONTEXTUAL_ORCHESTRATOR_SOURCE_REVISION: "
-        "2712827bfebd8be39e25c24924ad1f18522fd5f9"
+        "3558a9a3aeb985282b255fcd80bb2201c19ae54b"
     ) in compose