diff --git a/Drivers/BSP/NET/lftpd/lftpd_inet.c b/Drivers/BSP/NET/lftpd/lftpd_inet.c
index 759b5d60..66a128d8 100644
--- a/Drivers/BSP/NET/lftpd/lftpd_inet.c
+++ b/Drivers/BSP/NET/lftpd/lftpd_inet.c
@@ -162,6 +162,12 @@ int lftpd_inet_read_line(int socket, char *buffer, size_t buffer_len)
         }
 
         total_read_len += read_len;
+        /* 预算语义＝"字节间隔超时"而非"整行总时长"：收到任何字节即证明对端
+         * 存活，重置 t0。原形态下 t0 只在入口置一次，慢速/保活型客户端的零散
+         * 短行会被 30s 总预算误掐（台架 2026-11-13：FileZilla 会话周期性
+         * "control channel closed by peer (ret=-1)"，NOOP 保活救不回来）。
+         * 空闲回收语义不变：零字节静默满预算仍由 rem==0 判超时释放。 */
+        t0 = xTaskGetTickCount();
 
         char *p = strstr(buffer, "\r\n");
         if (p != NULL) {
diff --git a/docs/内存管理/RAM使用分析与优化方案.md b/docs/内存管理/RAM使用分析与优化方案.md
index 2d585ce8..0d972fcc 100644
--- a/docs/内存管理/RAM使用分析与优化方案.md
+++ b/docs/内存管理/RAM使用分析与优化方案.md
@@ -47,10 +47,10 @@ dhara 失败类 +84；RO 另 +208，全是该失败类名表）→ `ER_IROM1` 
 <!-- MEM_SNAPSHOT:BEGIN generated by scripts/check_mem_numbers.py -->
 | 区域 | 用量 | 容量 | 占比 |
 |---|---|---|---|
-| ER_IROM1 | 288,624 B (281.86 KB) | 1,048,576 B (1024 KB) | 27.5% |
+| ER_IROM1 | 288,628 B (281.86 KB) | 1,048,576 B (1024 KB) | 27.5% |
 | RW_IRAM1 | 97,248 B (94.97 KB) | 131,072 B (128 KB) | 74.2% |
 | RW_CCM | 57,376 B (56.03 KB) | 65,280 B (64 KB) | 87.9% |
-| **Flash (ROM 合计)** | **290,712 B (283.9 KB)** | 1,048,576 B (1024 KB) | **27.7%** |
+| **Flash (ROM 合计)** | **290,716 B (283.9 KB)** | 1,048,576 B (1024 KB) | **27.7%** |
 <!-- MEM_SNAPSHOT:END -->
 
 各区的容量与常量来源：
diff --git a/docs/内存管理/RAM预算台账.md b/docs/内存管理/RAM预算台账.md
index 4f7872f5..a45a0369 100644
--- a/docs/内存管理/RAM预算台账.md
+++ b/docs/内存管理/RAM预算台账.md
@@ -15,7 +15,7 @@
 <!-- MEM_BUDGET:BEGIN generated by scripts/ram_baseline.py -->
 | 区域 | 用量 | 容量 | 占比 | 门禁（≤92%） |
 |---|---|---|---|---|
-| ER_IROM1 (Flash) | 288,624 B | 1,048,576 B | 27.5% | 参考 |
+| ER_IROM1 (Flash) | 288,628 B | 1,048,576 B | 27.5% | 参考 |
 | RW_CCM | 57,376 B | 65,280 B | 87.9% | PASS |
 | UNINIT_CCM | 48 B | 256 B | 18.8% | 参考 |
 | RW_IRAM1 | 97,248 B | 131,072 B | 74.2% | PASS |
diff --git a/scripts/ram_baseline.tsv b/scripts/ram_baseline.tsv
index a67acea0..b0c83aa3 100644
--- a/scripts/ram_baseline.tsv
+++ b/scripts/ram_baseline.tsv
@@ -21,4 +21,4 @@ date	code	ro	rw	zi	er_irom1	er_pct	iram1	iram1_pct	ccm	ccm_pct	top_rwzi
 2026-11-09	255160	31204	2080	152152	286364	27.3	96808	73.9	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;nand_ftl.o=8288;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;wave_ring.o=5296;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
 2026-11-10	255160	31204	2080	152152	286364	27.3	96808	73.9	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;nand_ftl.o=8288;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;wave_ring.o=5296;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
 2026-11-11	256024	31760	2080	152368	287784	27.4	97024	74.0	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;nand_ftl.o=8288;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;wave_ring.o=5332;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
-2026-11-13	256588	32036	2088	152584	288624	27.5	97248	74.2	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;nand_ftl.o=8288;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;wave_ring.o=5332;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
+2026-11-13	256592	32036	2088	152584	288628	27.5	97248	74.2	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;nand_ftl.o=8288;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;wave_ring.o=5332;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
diff --git a/scripts/size_attestation.json b/scripts/size_attestation.json
index a8e89b3d..51373aca 100644
--- a/scripts/size_attestation.json
+++ b/scripts/size_attestation.json
@@ -1,15 +1,15 @@
 {
-  "built_at": "2026-11-13T16:02:07+08:00",
-  "fingerprint": "f6c08bfe7cee85ff075041fcbdf57f41bb43bd99c6d58fa70bc9fd341d435176",
+  "built_at": "2026-11-13T16:24:41+08:00",
+  "fingerprint": "bb41550b69ceb55ea8934919f892116874c980ee7122942733b4f13559d84ebe",
   "fingerprint_files": 1479,
   "fingerprint_source": "git-index",
   "gated_regions": [
     "RW_IRAM1",
     "RW_CCM"
   ],
-  "git_head": "a98d4e06e8fa47dcd15ba5d1364651d1769e4b1b",
+  "git_head": "72779cab007093dd993a45f60c9eec2ccca86134",
   "map": "MDK-ARM/STM32F407-Demo/STM32F407-Demo.map",
-  "map_mtime": 1794556900,
+  "map_mtime": 1794558267,
   "pct": {
     "ER_IROM1": 27.53,
     "RW_CCM": 87.89,
@@ -19,7 +19,7 @@
   "regions": {
     "ER_IROM1": {
       "max": 1048576,
-      "size": 288624
+      "size": 288628
     },
     "RW_CCM": {
       "max": 65280,
@@ -37,7 +37,7 @@
   "schema": 2,
   "scope_note": "\u540c\u7801\u51ed\u8bc1\uff1a\u6307\u7eb9\u8986\u76d6\u56fa\u4ef6\u4f53\u79ef\u76f8\u5173\u6e90\u7801\uff0c\u53e3\u5f84\u89c1\u672c\u811a\u672c docstring",
   "sizes": {
-    "code": 256588,
+    "code": 256592,
     "ro_data": 32036,
     "rw_data": 2088,
     "zi_data": 152584