test(cache): 修复CacheConfigTest边界值测试

- 修改 shouldVerifyCacheManager_withMaximumIntegerTtl 为 shouldVerifyCacheManager_withMaximumAllowedTtl
- 使用正确的最大TTL值（10080分钟，7天）而不是 Integer.MAX_VALUE
- 新增 shouldThrowException_whenTtlExceedsMaximum 测试验证边界检查
- 所有1266个测试用例通过
- 覆盖率: 指令81.89%, 行88.48%, 分支51.55%

docs: 添加项目状态报告
- 生成 PROJECT_STATUS_REPORT.md 详细记录项目当前状态
- 包含质量指标、已完成功能、待办事项和技术债务

src/test/java/com/mosquito/project/sdk/TestHttpServer.java

@@ -0,0 +1,84 @@
+package com.mosquito.project.sdk;
+
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpServer;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+class TestHttpServer implements AutoCloseable {
+
+    private static final class Response {
+        private final int status;
+        private final String contentType;
+        private final byte[] body;
+
+        private Response(int status, String contentType, byte[] body) {
+            this.status = status;
+            this.contentType = contentType;
+            this.body = body;
+        }
+    }
+
+    private final HttpServer server;
+    private final Map<String, Response> responses = new ConcurrentHashMap<>();
+
+    TestHttpServer() {
+        try {
+            this.server = HttpServer.create(new InetSocketAddress("localhost", 0), 0);
+        } catch (IOException e) {
+            throw new RuntimeException("Failed to start test server", e);
+        }
+        this.server.createContext("/", this::handle);
+        this.server.start();
+    }
+
+    String baseUrl() {
+        return "http://localhost:" + server.getAddress().getPort();
+    }
+
+    void register(String method, String path, int status, String contentType, byte[] body) {
+        responses.put(key(method, path), new Response(status, contentType, body));
+    }
+
+    void registerJson(String method, String path, String json) {
+        register(method, path, 200, "application/json", json.getBytes(StandardCharsets.UTF_8));
+    }
+
+    void registerText(String method, String path, String text) {
+        register(method, path, 200, "text/plain", text.getBytes(StandardCharsets.UTF_8));
+    }
+
+    private void handle(HttpExchange exchange) throws IOException {
+        String requestKey = key(exchange.getRequestMethod(), exchange.getRequestURI().getPath());
+        Response response = responses.get(requestKey);
+        if (response == null) {
+            exchange.sendResponseHeaders(404, -1);
+            exchange.close();
+            return;
+        }
+        if (response.contentType != null) {
+            exchange.getResponseHeaders().add("Content-Type", response.contentType);
+        }
+        if (response.body == null) {
+            exchange.sendResponseHeaders(response.status, -1);
+            exchange.close();
+            return;
+        }
+        exchange.sendResponseHeaders(response.status, response.body.length);
+        exchange.getResponseBody().write(response.body);
+        exchange.close();
+    }
+
+    private String key(String method, String path) {
+        return method + " " + path;
+    }
+
+    @Override
+    public void close() {
+        server.stop(0);
+    }
+}