feat(harness): add evidence and semantic guards

src/main/java/com/superbiz/agent/harness/release/EvidenceRepairPrompt.java

@@ -0,0 +1,24 @@
+package com.superbiz.agent.harness.release;
+
+import org.springframework.core.io.ClassPathResource;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+
+final class EvidenceRepairPrompt {
+
+    private static final String RESOURCE_PATH = "prompts/evidence-repair-prompt.md";
+
+    private EvidenceRepairPrompt() {
+    }
+
+    static String load() {
+        ClassPathResource resource = new ClassPathResource(RESOURCE_PATH);
+        try (InputStream input = resource.getInputStream()) {
+            return new String(input.readAllBytes(), StandardCharsets.UTF_8);
+        } catch (IOException exception) {
+            throw new IllegalStateException("Failed to load evidence repair prompt", exception);
+        }
+    }
+}