diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d4f71ff..89477aa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,6 +30,8 @@ jobs:
         run: bash scripts/check-agents-md.sh
       - name: Validate Chrome sandbox CI wiring
         run: bash tests/ci-chrome-sandbox-validate.sh
+      - name: Validate canonical docs URL wiring
+        run: bash tests/ci-canonical-docs-url-validate.sh
       - name: cargo fmt --check
         run: cargo fmt --all -- --check
       - name: cargo clippy
diff --git a/.github/workflows/dogfood.yml b/.github/workflows/dogfood.yml
index 8bcc0ba..a6d3dd0 100644
--- a/.github/workflows/dogfood.yml
+++ b/.github/workflows/dogfood.yml
@@ -18,8 +18,8 @@ env:
   RUST_BACKTRACE: 1
 
 jobs:
-  lint-plumb-dev:
-    name: plumb lint https://plumb.dev
+  lint-canonical-docs:
+    name: plumb lint https://plumb.aramhammoudeh.com/
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
@@ -46,5 +46,5 @@ jobs:
         env:
           CHROME_PATH: ${{ steps.setup-chrome.outputs.chrome-path }}
         run: |
-          target/release/plumb lint https://plumb.dev \
+          target/release/plumb lint https://plumb.aramhammoudeh.com/ \
             --executable-path "$CHROME_PATH"
diff --git a/justfile b/justfile
index 25d864c..0fc34b5 100644
--- a/justfile
+++ b/justfile
@@ -49,7 +49,7 @@ fmt:
     cargo fmt --all
 
 # All static checks — fmt + clippy with zero tolerance. Matches CI preflight.
-check: check-agents ci-chrome-sandbox-validate
+check: check-agents ci-chrome-sandbox-validate ci-canonical-docs-url-validate
     cargo fmt --all -- --check
     cargo clippy --workspace --all-targets --all-features -- -D warnings
 
@@ -62,6 +62,10 @@ check-agents:
 ci-chrome-sandbox-validate:
     bash tests/ci-chrome-sandbox-validate.sh
 
+# Validate canonical docs URL usage in CI/release acceptance paths.
+ci-canonical-docs-url-validate:
+    bash tests/ci-canonical-docs-url-validate.sh
+
 # Verify the local environment required by the Phase 3 gate.
 phase3-gate-env:
     bash scripts/check-phase3-gate-env.sh
diff --git a/tests/ci-canonical-docs-url-validate.sh b/tests/ci-canonical-docs-url-validate.sh
new file mode 100755
index 0000000..927b1ec
--- /dev/null
+++ b/tests/ci-canonical-docs-url-validate.sh
@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+# ci-canonical-docs-url-validate.sh — Static validation for canonical docs URL
+# usage in CI and release acceptance paths.
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+DOGFOOD="$REPO_ROOT/.github/workflows/dogfood.yml"
+JUSTFILE="$REPO_ROOT/justfile"
+CI_WORKFLOW="$REPO_ROOT/.github/workflows/ci.yml"
+
+ACTIVE_PATHS=(
+    "$REPO_ROOT/.github/workflows"
+    "$REPO_ROOT/justfile"
+    "$REPO_ROOT/scripts"
+    "$REPO_ROOT/tests"
+    "$REPO_ROOT/docs/runbooks"
+    "$REPO_ROOT/docs/src/ci"
+)
+
+failures=0
+
+pass() { echo "  PASS: $1"; }
+fail() { echo "  FAIL: $1" >&2; failures=1; }
+
+echo "=== Canonical docs URL validation ==="
+echo ""
+
+echo "1. Dogfood workflow targets the canonical docs URL"
+if grep -Eq '^  lint-canonical-docs:$' "$DOGFOOD"; then
+    pass "dogfood job id is lint-canonical-docs"
+else
+    fail "dogfood job id is not lint-canonical-docs"
+fi
+
+if grep -Fq 'name: plumb lint https://plumb.aramhammoudeh.com/' "$DOGFOOD"; then
+    pass "dogfood job name uses canonical docs URL"
+else
+    fail "dogfood job name does not use canonical docs URL"
+fi
+
+if grep -Fq 'target/release/plumb lint https://plumb.aramhammoudeh.com/ \' "$DOGFOOD"; then
+    pass "dogfood lint command uses canonical docs URL"
+else
+    fail "dogfood lint command does not use canonical docs URL"
+fi
+
+echo "2. Maintained validation wiring"
+if grep -Eq '^ci-canonical-docs-url-validate:$' "$JUSTFILE"; then
+    pass "justfile defines ci-canonical-docs-url-validate"
+else
+    fail "justfile does not define ci-canonical-docs-url-validate"
+fi
+
+if grep -Eq '^check:.*ci-canonical-docs-url-validate' "$JUSTFILE"; then
+    pass "just check depends on ci-canonical-docs-url-validate"
+else
+    fail "just check does not depend on ci-canonical-docs-url-validate"
+fi
+
+if grep -Fq 'tests/ci-canonical-docs-url-validate.sh' "$CI_WORKFLOW"; then
+    pass "ci.yml invokes tests/ci-canonical-docs-url-validate.sh"
+else
+    fail "ci.yml does not invoke tests/ci-canonical-docs-url-validate.sh"
+fi
+
+echo "3. No plumb.dev in active CI/release acceptance paths"
+matches=()
+for path in "${ACTIVE_PATHS[@]}"; do
+    while IFS= read -r line; do
+        if [[ "$line" == *"tests/ci-canonical-docs-url-validate.sh:"* ]]; then
+            continue
+        fi
+        matches+=("$line")
+    done < <(rg -n 'plumb\.dev' "$path" || true)
+done
+
+if [ "${#matches[@]}" -eq 0 ]; then
+    pass "no active CI/release acceptance path references plumb.dev"
+else
+    fail "active CI/release acceptance paths still reference plumb.dev"
+    printf '%s\n' "${matches[@]}" >&2
+fi
+
+echo ""
+if [ "$failures" -ne 0 ]; then
+    echo "FAILED: one or more checks failed."
+    exit 1
+else
+    echo "PASSED: all checks passed."
+fi