diff --git a/.replit b/.replit
index d50c78fd..12fbdc2c 100644
--- a/.replit
+++ b/.replit
@@ -3,6 +3,8 @@ modules = ["java", "java-17"]
 [nix]
 channel = "stable-24_05"
 
+# Zipkin is intentionally not bootstrapped by Replit. Use the repository's Docker Compose
+# topology for the supported, reviewable observability runtime.
 [workflows]
 runButton = "Project"
 
@@ -23,18 +25,6 @@ args = "Java Version Check"
 task = "workflow.run"
 args = "Build Project"
 
-[[workflows.workflow.tasks]]
-task = "workflow.run"
-args = "Run Zipkin Server"
-
-[[workflows.workflow.tasks]]
-task = "workflow.run"
-args = "Run Zipkin"
-
-[[workflows.workflow.tasks]]
-task = "workflow.run"
-args = "Run Eureka Server"
-
 [[workflows.workflow.tasks]]
 task = "workflow.run"
 args = "Run All Tests"
@@ -43,10 +33,6 @@ args = "Run All Tests"
 task = "workflow.run"
 args = "Check Test Status"
 
-[[workflows.workflow.tasks]]
-task = "workflow.run"
-args = "Build and Run Microservices"
-
 [[workflows.workflow]]
 name = "Run Microservices"
 author = "agent"
@@ -56,8 +42,8 @@ agentRequireRestartOnSave = false
 
 [[workflows.workflow.tasks]]
 task = "shell.exec"
-args = "mvn clean install && java -jar eureka-server/target/eureka-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar config-server/target/config-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar zipkin.jar & sleep 30 && java -jar etl-service/target/etl-service-1.0-SNAPSHOT.jar & java -jar cdc-service/target/cdc-service-1.0-SNAPSHOT.jar & java -jar zuul-gateway/target/zuul-gateway-1.0-SNAPSHOT.jar"
-waitForPort = 9411
+args = "mvn clean install && java -jar eureka-server/target/eureka-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar config-server/target/config-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar etl-service/target/etl-service-1.0-SNAPSHOT.jar & java -jar cdc-service/target/cdc-service-1.0-SNAPSHOT.jar & java -jar zuul-gateway/target/zuul-gateway-1.0-SNAPSHOT.jar"
+waitForPort = 8761
 
 [[workflows.workflow]]
 name = "Java Version Check"
@@ -81,30 +67,6 @@ agentRequireRestartOnSave = false
 task = "shell.exec"
 args = "mvn clean install"
 
-[[workflows.workflow]]
-name = "Run Zipkin Server"
-author = "agent"
-
-[workflows.workflow.metadata]
-agentRequireRestartOnSave = false
-
-[[workflows.workflow.tasks]]
-task = "shell.exec"
-args = "curl -sSL https://zipkin.io/quickstart.sh | bash -s && java -jar zipkin.jar"
-waitForPort = 9411
-
-[[workflows.workflow]]
-name = "Run Zipkin"
-author = "agent"
-
-[workflows.workflow.metadata]
-agentRequireRestartOnSave = false
-
-[[workflows.workflow.tasks]]
-task = "shell.exec"
-args = "java -jar zipkin.jar --server.port=9412"
-waitForPort = 9412
-
 [[workflows.workflow]]
 name = "Run Eureka Server"
 author = "agent"
@@ -152,16 +114,8 @@ args = "mvn clean install && java -jar eureka-server/target/eureka-server-1.0-SN
 waitForPort = 8761
 
 [deployment]
-run = ["sh", "-c", "mvn clean install && java -jar eureka-server/target/eureka-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar config-server/target/config-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar zipkin.jar & sleep 30 && java -jar etl-service/target/etl-service-1.0-SNAPSHOT.jar & java -jar cdc-service/target/cdc-service-1.0-SNAPSHOT.jar & java -jar zuul-gateway/target/zuul-gateway-1.0-SNAPSHOT.jar"]
+run = ["sh", "-c", "mvn clean install && java -jar eureka-server/target/eureka-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar config-server/target/config-server-1.0-SNAPSHOT.jar & sleep 30 && java -jar etl-service/target/etl-service-1.0-SNAPSHOT.jar & java -jar cdc-service/target/cdc-service-1.0-SNAPSHOT.jar & java -jar zuul-gateway/target/zuul-gateway-1.0-SNAPSHOT.jar"]
 
 [[ports]]
 localPort = 8761
 externalPort = 3001
-
-[[ports]]
-localPort = 9411
-externalPort = 80
-
-[[ports]]
-localPort = 9412
-externalPort = 3000
diff --git a/etl-service/src/test/java/com/xtrmetl/etl/security/RepositoryRuntimeSupplyChainTest.java b/etl-service/src/test/java/com/xtrmetl/etl/security/RepositoryRuntimeSupplyChainTest.java
new file mode 100644
index 00000000..5cad7938
--- /dev/null
+++ b/etl-service/src/test/java/com/xtrmetl/etl/security/RepositoryRuntimeSupplyChainTest.java
@@ -0,0 +1,99 @@
+package com.xtrmetl.etl.security;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.regex.Pattern;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * Guards repository-owned developer launch configuration against unsafe or conflicting
+ * developer-runtime authority paths.
+ */
+class RepositoryRuntimeSupplyChainTest {
+
+    private static final Path PROJECT_ROOT = projectRoot();
+    private static final Pattern REMOTE_SHELL_PIPE = Pattern.compile(
+            "(?im)\\bcurl\\b[^\\r\\n|]*\\|\\s*(?:bash|sh)\\b"
+    );
+
+    @Test
+    void replitDoesNotExecuteTrackedZipkinJar() throws IOException {
+        String replit = readReplit();
+        assertFalse(
+                replit.contains("java -jar zipkin.jar"),
+                "Replit launch configuration must not execute the repository-tracked opaque Zipkin JAR"
+        );
+    }
+
+    @Test
+    void replitDoesNotPipeMutableRemoteContentIntoAShell() throws IOException {
+        String replit = readReplit();
+        assertFalse(
+                REMOTE_SHELL_PIPE.matcher(replit).find(),
+                "Replit launch configuration must not pipe mutable remote content directly into a shell"
+        );
+    }
+
+    @Test
+    void projectRunButtonDelegatesToOneMicroserviceTopology() throws IOException {
+        String projectWorkflow = workflowBlock(readReplit(), "Project");
+        int serviceTopologyDelegates = countOccurrences(projectWorkflow, "args = \"Run Microservices\"")
+                + countOccurrences(projectWorkflow, "args = \"Run Eureka Server\"")
+                + countOccurrences(projectWorkflow, "args = \"Build and Run Microservices\"");
+
+        assertEquals(
+                1,
+                serviceTopologyDelegates,
+                "The Replit run button must not launch overlapping copies of the same microservice topology"
+        );
+        assertTrue(
+                projectWorkflow.contains("args = \"Run Microservices\""),
+                "The Replit run button must delegate service startup to the canonical Run Microservices workflow"
+        );
+    }
+
+    private static String readReplit() throws IOException {
+        return Files.readString(PROJECT_ROOT.resolve(".replit"), StandardCharsets.UTF_8);
+    }
+
+    private static String workflowBlock(String replit, String workflowName) {
+        String normalizedReplit = replit.replace("\r\n", "\n").replace('\r', '\n');
+        String marker = "[[workflows.workflow]]\nname = \"" + workflowName + "\"";
+        int start = normalizedReplit.indexOf(marker);
+        if (start < 0) {
+            throw new AssertionError("Missing Replit workflow: " + workflowName);
+        }
+        int end = normalizedReplit.indexOf("[[workflows.workflow]]", start + marker.length());
+        return end < 0 ? normalizedReplit.substring(start) : normalizedReplit.substring(start, end);
+    }
+
+    private static int countOccurrences(String text, String needle) {
+        int count = 0;
+        int cursor = 0;
+        while ((cursor = text.indexOf(needle, cursor)) >= 0) {
+            count++;
+            cursor += needle.length();
+        }
+        return count;
+    }
+
+    private static Path projectRoot() {
+        Path current = Paths.get(System.getProperty("user.dir")).toAbsolutePath();
+        while (current != null) {
+            if (Files.isRegularFile(current.resolve("pom.xml"))
+                    && Files.isRegularFile(current.resolve(".replit"))) {
+                return current;
+            }
+            current = current.getParent();
+        }
+        throw new IllegalStateException("Could not locate mightyETL repository root");
+    }
+}