diff --git a/src/test/java/com/codechecker/cache/RecordingTodoReplaceScenarioTest.java b/src/test/java/com/codechecker/cache/RecordingTodoReplaceScenarioTest.java
new file mode 100644
index 0000000..7d65bbe
--- /dev/null
+++ b/src/test/java/com/codechecker/cache/RecordingTodoReplaceScenarioTest.java
@@ -0,0 +1,139 @@
+package com.codechecker.cache;
+
+import com.codechecker.cache.detector.RedisWritePointDetector;
+import com.codechecker.cache.detector.WritePoint;
+import com.codechecker.cache.diff.ChangeType;
+import com.codechecker.cache.diff.SchemaChange;
+import com.codechecker.cache.report.CheckReport;
+import com.codechecker.cache.report.KeyStructureChange;
+import com.codechecker.cache.report.ReportBuilder;
+import com.codechecker.cache.schema.JavaSchemaExtractor;
+import com.codechecker.cache.schema.SkeletonJsonRenderer;
+import com.codechecker.cache.schema.SourceIndex;
+import com.codechecker.cache.schema.TypeSchema;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * 复现业务仓实跑误报（jnpf-java-cloud / RecordingTodoDomainServiceImpl#replaceText）：
+ *
+ * - Key --> recording:todo:replace:＊:＊
+ * 类型: <未解析>
+ * value 新增为： “{}”
+ * - Key --> recording:todo:replace:title:＊:＊
+ * 类型: <未解析>
+ * value 新增为： “{}”
+ *
+ * 根因：{@code stringRedisTemplate.opsForValue().set(key, String变量)} 被 W04 命中，
+ * String 无法展开 Schema → 空骨架 + WRITE_POINT_ADDED。
+ */
+class RecordingTodoReplaceScenarioTest {
+
+ private static final Set PATTERNS = new HashSet<>(Arrays.asList("W01", "W02", "W03", "W04", "W05"));
+
+ @Test
+ void reproducesUnresolvedStringCacheFalsePositiveLikeWeCom() {
+ String constants = TestSupport.fixture("fixtures/recording-todo/RecordingTodoConstants.txt");
+ String service = TestSupport.fixture("fixtures/recording-todo/RecordingTodoDomainServiceImpl.txt");
+
+ SourceIndex index = new SourceIndex();
+ index.addSource(constants);
+ index.addSource(service);
+
+ List wps = new RedisWritePointDetector(index, PATTERNS).detect("RecordingTodoDomainServiceImpl.java", service);
+ wps = wps.stream().sorted(Comparator.comparing(WritePoint::getLineNumber)).collect(Collectors.toList());
+
+ assertEquals(2, wps.size(), "应检出 content / title 两处 set");
+
+ WritePoint contentWp = wps.get(0);
+ WritePoint titleWp = wps.get(1);
+
+ // --- 检测层：与实跑一致 ---
+ assertEquals("W04", contentWp.getPattern());
+ assertEquals("W04", titleWp.getPattern());
+ assertEquals("recording:todo:replace:*:*", contentWp.getResolvedKeyPattern());
+ assertEquals("recording:todo:replace:title:*:*", titleWp.getResolvedKeyPattern());
+ assertNull(contentWp.getResolvedValueType(), "String 不在本仓 SourceIndex，FQN 应为 null");
+ assertNull(titleWp.getResolvedValueType());
+ assertTrue(contentWp.getEnclosingMethod().contains("replaceText") || "replaceText".equals(contentWp.getEnclosingMethod()));
+ assertTrue(contentWp.getEnclosingClass().endsWith("RecordingTodoDomainServiceImpl"));
+
+ // --- Schema：空结构 → "{}" ---
+ JavaSchemaExtractor extractor = new JavaSchemaExtractor(index, 8);
+ SkeletonJsonRenderer renderer = new SkeletonJsonRenderer();
+ TypeSchema contentSchema = extractor.extract(contentWp.getResolvedValueType(), contentWp.isRootArray());
+ TypeSchema titleSchema = extractor.extract(titleWp.getResolvedValueType(), titleWp.isRootArray());
+ assertTrue(contentSchema.isEmpty());
+ assertTrue(titleSchema.isEmpty());
+ assertEquals("{}", renderer.render(contentSchema));
+ assertEquals("{}", renderer.render(titleSchema));
+
+ // --- 报告层：复现企微「value 新增为 / 类型未解析」 ---
+ CheckReport report = buildAddedWritePointReport(contentWp, titleWp, extractor, renderer);
+ String md = new ReportBuilder("【序列化结构变更】").toMarkdown(report);
+
+ assertTrue(md.contains("recording:todo:replace:＊:＊") || md.contains("recording:todo:replace:*:*"), "应包含 content key（企微转义后可为全角＊），实际:\n" + md);
+ assertTrue(md.contains("recording:todo:replace:title:＊:＊") || md.contains("recording:todo:replace:title:*:*"), "应包含 title key，实际:\n" + md);
+ assertTrue(md.contains("<未解析>"), "类型应展示为 <未解析>，实际:\n" + md);
+ assertTrue(md.contains("value 新增为"), "应走新增写入文案，实际:\n" + md);
+ assertTrue(md.contains("“{}”") || md.contains("\"{}\"") || md.contains("{}"), "骨架应为空对象 {}，实际:\n" + md);
+ assertTrue(md.contains("RecordingTodoDomainServiceImpl#replaceText"), "位置应指向 replaceText，实际:\n" + md);
+ }
+
+ /**
+ * 模拟 SchemaCheckAnalyzer 对「文件新增写入点」的聚合与展示路径（无 git）。
+ */
+ private static CheckReport buildAddedWritePointReport(WritePoint contentWp, WritePoint titleWp,
+ JavaSchemaExtractor extractor,
+ SkeletonJsonRenderer renderer) {
+ CheckReport report = new CheckReport();
+ report.setRepository("jnpf-java-cloud");
+ report.setBranch("patrol/dev_patrol_2.0");
+ report.setOldSha("adbb15c6");
+ report.setNewSha("6ddc72dc");
+ report.setModifier("xgl");
+ report.setModifyTime("2026-07-29 17:57:02");
+
+ for (WritePoint wp : Arrays.asList(contentWp, titleWp)) {
+ SchemaChange added = new SchemaChange(ChangeType.WRITE_POINT_ADDED);
+ added.setKeyPattern(wp.getResolvedKeyPattern());
+ added.setKeyExpression(wp.getKeyExpression());
+ added.setWriteLocation(wp.location());
+ added.setValueType(displayType(wp));
+ added.setMessage("新增缓存写入点，value 类型: " + displayType(wp));
+ report.getChanges().add(added);
+
+ TypeSchema schema = extractor.extract(wp.getResolvedValueType(), wp.isRootArray());
+ KeyStructureChange kc = new KeyStructureChange();
+ kc.setKeyPattern(wp.getResolvedKeyPattern());
+ kc.setKeyExpression(wp.getKeyExpression());
+ kc.setWriteLocation(wp.location());
+ kc.setValueType(displayType(wp));
+ kc.setKeyUnresolved(false);
+ kc.setOldSkeletonJson("");
+ kc.setNewSkeletonJson(renderer.render(schema, Collections.emptySet(), SkeletonJsonRenderer.DEFAULT_MAX_LEN));
+ kc.getFieldDetails().add(added);
+ report.getKeyChanges().add(kc);
+ }
+ return report;
+ }
+
+ private static String displayType(WritePoint wp) {
+ String fqn = wp.getResolvedValueType();
+ if (fqn == null) {
+ return "<未解析>";
+ }
+ return fqn.contains(".") ? fqn.substring(fqn.lastIndexOf('.') + 1) : fqn;
+ }
+}
diff --git a/src/test/resources/fixtures/recording-todo/RecordingTodoConstants.txt b/src/test/resources/fixtures/recording-todo/RecordingTodoConstants.txt
new file mode 100644
index 0000000..19d52e1
--- /dev/null
+++ b/src/test/resources/fixtures/recording-todo/RecordingTodoConstants.txt
@@ -0,0 +1,13 @@
+package com.fantaibao.iot.domain.constant;
+
+/**
+ * 精简自业务仓 RecordingTodoConstants（复现非序列化 String 缓存误报）。
+ */
+public final class RecordingTodoConstants {
+
+ private RecordingTodoConstants() {
+ }
+
+ /** 待办内容替换原文缓存的 Redis key 前缀 */
+ public static final String REDIS_KEY_PREFIX = "recording:todo:replace:";
+}
diff --git a/src/test/resources/fixtures/recording-todo/RecordingTodoDomainServiceImpl.txt b/src/test/resources/fixtures/recording-todo/RecordingTodoDomainServiceImpl.txt
new file mode 100644
index 0000000..a299835
--- /dev/null
+++ b/src/test/resources/fixtures/recording-todo/RecordingTodoDomainServiceImpl.txt
@@ -0,0 +1,22 @@
+package com.fantaibao.iot.infrastructure.service.recording;
+
+import com.fantaibao.iot.domain.constant.RecordingTodoConstants;
+import org.springframework.data.redis.core.StringRedisTemplate;
+
+/**
+ * 精简自业务仓 RecordingTodoDomainServiceImpl#replaceText：
+ * 将待办原文 content/title（纯 String）写入 StringRedisTemplate，无 JSON 序列化。
+ * 对应企微误报：类型 <未解析>、value 新增为 “{}”。
+ */
+public class RecordingTodoDomainServiceImpl {
+
+ private StringRedisTemplate stringRedisTemplate;
+
+ public void replaceText(String tenantId, String todoId, String originalContent, String originalTitle) {
+ String contentRedisKey = RecordingTodoConstants.REDIS_KEY_PREFIX + todoId + ":" + tenantId;
+ stringRedisTemplate.opsForValue().set(contentRedisKey, originalContent);
+
+ String titleRedisKey = RecordingTodoConstants.REDIS_KEY_PREFIX + "title:" + todoId + ":" + tenantId;
+ stringRedisTemplate.opsForValue().set(titleRedisKey, originalTitle);
+ }
+}