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/monotonic_test.c

@@ -0,0 +1,38 @@
+/* monotonic_test.c — 宿主验证 ncm_now_ms(REALTIME) 与 ncm_monotonic_ms(MONOTONIC)。
+ * 演示：用墙钟算 deadline 在「NTP 拨钟回退 Δ」时，(deadline-now) 被放大成巨大 rem；
+ * 用单调钟则不受影响（每次至多等剩余 deadline）。
+ */
+#include "ncm.h"
+#include "ncm_common.h"
+#include <stdio.h>
+#include <unistd.h>
+
+int main(void) {
+    int64_t w0 = ncm_now_ms();
+    int64_t m0 = ncm_monotonic_ms();
+    usleep(50 * 1000);
+    int64_t w1 = ncm_now_ms();
+    int64_t m1 = ncm_monotonic_ms();
+    printf("REALTIME  advance: %lld ms\n", (long long)(w1 - w0));
+    printf("MONOTONIC advance: %lld ms\n", (long long)(m1 - m0));
+    if (w1 <= w0 || m1 <= m0) { printf("FAIL: clock not advancing\n"); return 1; }
+
+    /* 模拟 NTP 把墙钟拨回 Δ=6h 后，(deadline-now) 的变化 */
+    int64_t base_w = w0;
+    int64_t base_m = m0;
+    int64_t tmo = 15000;
+    int64_t dline_w = base_w + tmo, dline_m = base_m + tmo;
+    int64_t jump = 6 * 3600 * 1000;   /* 拨回 6 小时 */
+
+    /* REALTIME：now 回退 jump → rem 巨大 */
+    int64_t now_w = base_w - jump;
+    uint32_t rem_w = (uint32_t)(dline_w - now_w);
+    /* MONOTONIC：now 不受跳变影响 */
+    int64_t now_m = base_m;
+    uint32_t rem_m = (uint32_t)(dline_m - now_m);
+    printf("REALTIME  rem after -6h jump = %u ms (%.1f h)\n", rem_w, rem_w / 3600000.0);
+    printf("MONOTONIC rem after -6h jump = %u ms (%.2f s)\n", rem_m, rem_m / 1000.0);
+    if (rem_w > rem_m) printf("OK: REALTIME overflow confirmed, MONOTONIC unaffected\n");
+    else { printf("FAIL: expected REALTIME rem to blow up\n"); return 1; }
+    return 0;
+}