diff --git a/deploy/organization-rulesets/README.md b/deploy/organization-rulesets/README.md
index f328391..d4711f7 100644
--- a/deploy/organization-rulesets/README.md
+++ b/deploy/organization-rulesets/README.md
@@ -41,6 +41,7 @@ verb — e.g. `require-pull-request.yaml`). Repo-scoped rulesets live next door
 | `require-signed-commits.yaml` | **Require signed commits** (existing, retired) | Observe + Update — retain the disabled record; never create or delete |
 | `protect-release-tags.yaml` | **Protect release tags** (net-new) | Managed (Create) — block tag delete + force-move + require `v<semver>` |
 | `require-world-at-ruin-trusted-regressions.yaml` | **Require workflow - World at Ruin trusted regressions** (net-new) | Managed (Create) — target only World at Ruin and require the canonical catalogue's trusted regression workflow |
+| `require-world-at-ruin-product-regressions.yaml` | **Require workflow - World at Ruin product regressions** (net-new) | Managed (Create) — target only World at Ruin and require its product-owned trusted regression workflow from reviewed `main` |
 | `require-monorepo-ci-aggregate-contract.yaml` | **Require workflow - Monorepo CI aggregate contract** (net-new) | Managed (Create) — target only monorepo and require the aggregate-execution control from its reviewed `main` |
 | `require-dotgithub-deploy-guards.yaml` | **Require workflow - .github deploy guards** (net-new) | Managed (Create) — target only this repository and run the `deploy/` release-contract and deletion validators from its reviewed `main` |
 | `require-go-template-validation.yaml` | **Require workflow - Go template validation** (net-new) | Managed (Create) — target only go-template and require the canonical Go validation workflow from this repository's reviewed `main`, restoring the gate the property-conditioned UI ruleset stopped applying there |
@@ -113,10 +114,11 @@ gates; a team audit cannot clear the latter two.
   that file's header for the team-vs-enterprise tier caveat on the name-pattern rule and
   its fallback.
 - **Required-workflow source pins** — v0.20.0 exposes the source repository, path and a
-  branch/tag `ref`, but not GitHub's immutable workflow `sha` selector. The World at Ruin
-  rule therefore binds the external trusted source to `devantler-tech/.github` on
-  `refs/heads/main`; Actions review and merge gates own source changes until the provider
-  exposes `sha`.
+  branch/tag `ref`, but not GitHub's immutable workflow `sha` selector. The two World at
+  Ruin rules bind the established external source in `devantler-tech/.github` and the
+  product-owned replacement in `devantler-tech/world-at-ruin` independently to
+  `refs/heads/main`. Their separate rulesets preserve replacement enforcement while the
+  established rule is later disabled and retired.
 - **Actions policies** — the 2026-06-18
   [workflow execution protections](https://github.blog/changelog/2026-06-18-control-who-and-what-triggers-github-actions-workflows/)
   (actor + event allow-lists controlling who/what triggers workflows, delivered as org
diff --git a/deploy/organization-rulesets/kustomization.yaml b/deploy/organization-rulesets/kustomization.yaml
index 4df22b2..e98cb2c 100644
--- a/deploy/organization-rulesets/kustomization.yaml
+++ b/deploy/organization-rulesets/kustomization.yaml
@@ -21,6 +21,7 @@ resources:
   # Net-new, managed (Create).
   - protect-release-tags.yaml
   - require-world-at-ruin-trusted-regressions.yaml
+  - require-world-at-ruin-product-regressions.yaml
   - require-monorepo-ci-aggregate-contract.yaml
   - require-dotgithub-deploy-guards.yaml
   - require-go-template-validation.yaml
diff --git a/deploy/organization-rulesets/require-world-at-ruin-product-regressions.yaml b/deploy/organization-rulesets/require-world-at-ruin-product-regressions.yaml
new file mode 100644
index 0000000..2a73fac
--- /dev/null
+++ b/deploy/organization-rulesets/require-world-at-ruin-product-regressions.yaml
@@ -0,0 +1,39 @@
+# Require World at Ruin's product-owned regression workflow on the product's
+# default branch. This rule is separate from the established external rule so
+# the replacement remains active while that rule is disabled and retired.
+#
+# GitHub selects the workflow from World at Ruin's reviewed main branch rather
+# than from candidate bytes. provider-upjet-github v0.20.0 exposes a branch/tag
+# ref but not GitHub's workflow SHA selector, so refs/heads/main is the strongest
+# declarative source binding the deployed provider can express.
+#
+# This is net-new and managed Observe + Create + Update + LateInitialize, never
+# Delete. No bypassActors are declared.
+apiVersion: enterprise.github.m.upbound.io/v1alpha1
+kind: OrganizationRuleset
+metadata:
+  name: require-world-at-ruin-product-regressions
+spec:
+  managementPolicies:
+    - Observe
+    - Create
+    - Update
+    - LateInitialize
+  forProvider:
+    name: Require workflow - World at Ruin product regressions
+    target: branch
+    enforcement: active
+    conditions:
+      - refName:
+          - include: ["~DEFAULT_BRANCH"]
+            exclude: []
+        repositoryId: [1303188705]
+    rules:
+      - requiredWorkflows:
+          - requiredWorkflow:
+              - repositoryId: 1303188705
+                path: .github/workflows/trusted-regressions.yaml
+                ref: refs/heads/main
+  providerConfigRef:
+    kind: ProviderConfig
+    name: default
diff --git a/tests/world-at-ruin-regression-ruleset.sh b/tests/world-at-ruin-regression-ruleset.sh
index 757eea8..a077d60 100755
--- a/tests/world-at-ruin-regression-ruleset.sh
+++ b/tests/world-at-ruin-regression-ruleset.sh
@@ -57,17 +57,36 @@ assert_value "source repository" "933213756" '.spec.forProvider.rules[0].require
 assert_value "source path" ".github/workflows/world-at-ruin-required-regressions.yaml" '.spec.forProvider.rules[0].requiredWorkflows[0].requiredWorkflow[0].path'
 assert_value "source ref" "refs/heads/main" '.spec.forProvider.rules[0].requiredWorkflows[0].requiredWorkflow[0].ref'
 
+selector='select(.kind == "OrganizationRuleset" and .metadata.name == "require-world-at-ruin-product-regressions")'
+count="$(yq -N "${selector} | .metadata.name" "${render}" | grep -c . || true)"
+[[ "${count}" == "1" ]] || fail "expected exactly one rendered product-regression ruleset, got ${count}"
+
+assert_value "product ruleset name" "Require workflow - World at Ruin product regressions" '.spec.forProvider.name'
+assert_value "product ruleset target" "branch" '.spec.forProvider.target'
+assert_value "product ruleset enforcement" "active" '.spec.forProvider.enforcement'
+assert_json "product management policy" '["Observe","Create","Update","LateInitialize"]' '.spec.managementPolicies'
+assert_json "product target repository" '[1303188705]' '.spec.forProvider.conditions[0].repositoryId'
+assert_json "product target branch" '["~DEFAULT_BRANCH"]' '.spec.forProvider.conditions[0].refName[0].include'
+assert_json "product target exclusions" '[]' '.spec.forProvider.conditions[0].refName[0].exclude'
+assert_value "product bypass actor count" "0" '(.spec.forProvider.bypassActors // []) | length'
+assert_value "product rule count" "1" '.spec.forProvider.rules | length'
+assert_value "product required workflow block count" "1" '.spec.forProvider.rules[0].requiredWorkflows | length'
+assert_value "product required workflow count" "1" '.spec.forProvider.rules[0].requiredWorkflows[0].requiredWorkflow | length'
+assert_value "product source repository" "1303188705" '.spec.forProvider.rules[0].requiredWorkflows[0].requiredWorkflow[0].repositoryId'
+assert_value "product source path" ".github/workflows/trusted-regressions.yaml" '.spec.forProvider.rules[0].requiredWorkflows[0].requiredWorkflow[0].path'
+assert_value "product source ref" "refs/heads/main" '.spec.forProvider.rules[0].requiredWorkflows[0].requiredWorkflow[0].ref'
+
 inventory="${repo_root}/deploy/organization-rulesets/README.md"
 grep -Fq 'The 10 imported org rulesets' "${inventory}" ||
   fail "organization ruleset inventory must account for 10 imported rulesets"
 # The backticks are literal Markdown table cell delimiters, not command substitution.
 # shellcheck disable=SC2016
 managed_rows="$(grep -c '^| `[a-z-]*\.yaml` | .*(net-new) | Managed (Create)' "${inventory}" || true)"
-[[ "${managed_rows}" == "5" ]] ||
-  fail "organization ruleset inventory must list 5 managed rulesets, got ${managed_rows}"
+[[ "${managed_rows}" == "6" ]] ||
+  fail "organization ruleset inventory must list 6 managed rulesets, got ${managed_rows}"
 managed_rendered="$(yq -N 'select(.kind == "OrganizationRuleset" and (.spec.managementPolicies | contains(["Create"]))) | .metadata.name' "${render}" | grep -c . || true)"
-[[ "${managed_rendered}" == "5" ]] ||
-  fail "expected 5 rendered managed (Create) organization rulesets, got ${managed_rendered}"
+[[ "${managed_rendered}" == "6" ]] ||
+  fail "expected 6 rendered managed (Create) organization rulesets, got ${managed_rendered}"
 # Schema inspection is not a live census. Keep rendered ownership checks above,
 # and require the capability inventory to preserve that evidence boundary.
 if ! grep -Fq 'Schema support determines what can be declared; it does not prove adoption,' "${inventory}" ||