fix(ncm): weapi挂死根因修复 (agent-207, 6缺陷叠加) — ①超时改CLOCK_MONOTONIC(墙钟NTP回拨致poll超长阻塞) ②响应头解析隔行跳行漏Content-Length ③请求头缓冲1KB→8KB ④cookie值截断192B致MUSIC_U不完整被当游客(改ptr+len不截断+按名去重) ⑤split处NUL覆盖body首字节 ⑥Content-Length:0直接DONE; status_check硬上限6s; 803后worker线程取uid/nick落盘(修uid恒空)

ncm→bf6d2a79 已部署; 真机1次验证(风控合规): status_check 721ms rc=0 uid=408996274; user_playlist 2.5s rc=0 count=64

patch_v2/ncm_app/bench/dev_repro.c

@@ -0,0 +1,29 @@
+/* dev_repro.c — 真机复现 login_status_check（weapi）挂死
+ * 用与 App 相同的 core 库：ncm_ctx_init 载入 deviceId/cookie，然后 ncm_login_status_check。
+ * 观察返回码与耗时；若 >10min 即复现挂死。
+ * 用法: ./dev_repro [data_dir] [cacert]
+ */
+#include "ncm.h"
+#include "ncm_http.h"
+#include "ncm_common.h"
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+    const char *data_dir = argc > 1 ? argv[1] : "/usr/data/mnt/sd_0/MeowData/os.meow.ncm/data";
+    const char *cacert   = argc > 2 ? argv[2] : "/usr/data/mnt/sd_0/MeowAPPs/os.meow.ncm/cacert.pem";
+
+    ncm_ctx_t ctx;
+    ncm_ctx_init(&ctx, data_dir);
+    printf("device_id=%s\n", ctx.device_id);
+    printf("cookie_len=%zu cookie=%s\n", strlen(ctx.cookie), ctx.cookie);
+    ncm_http_set_verify_default(1, cacert);
+
+    char uid[32], nick[128];
+    long t0 = (long)ncm_now_ms();
+    printf("status_check start...\n");
+    int rc = ncm_login_status_check(ctx.device_id, ctx.cookie, uid, sizeof uid, nick, sizeof nick);
+    long dt = (long)ncm_now_ms() - t0;
+    printf("status_check rc=%d elapsed_ms=%ld uid=%s nick=%s\n", rc, dt, uid, nick);
+    return rc == 0 ? 0 : 1;
+}