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 011494a0..d49d2729 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 | 287,964 B (281.21 KB) | 1,048,576 B (1024 KB) | 27.5% |
+| ER_IROM1 | 287,968 B (281.22 KB) | 1,048,576 B (1024 KB) | 27.5% |
 | RW_IRAM1 | 97,024 B (94.75 KB) | 131,072 B (128 KB) | 74.0% |
 | RW_CCM | 57,376 B (56.03 KB) | 65,280 B (64 KB) | 87.9% |
-| **Flash (ROM 合计)** | **290,044 B (283.2 KB)** | 1,048,576 B (1024 KB) | **27.7%** |
+| **Flash (ROM 合计)** | **290,048 B (283.2 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 e9b0430b..d904c77b 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) | 287,964 B | 1,048,576 B | 27.5% | 参考 |
+| ER_IROM1 (Flash) | 287,968 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 | 97,024 B | 131,072 B | 74.0% | PASS |
diff --git a/scripts/ram_baseline.tsv b/scripts/ram_baseline.tsv
index 0abfdea3..9fc1fecb 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	256200	31764	2080	152368	287964	27.5	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	256204	31764	2080	152368	287968	27.5	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
diff --git a/scripts/size_attestation.json b/scripts/size_attestation.json
index 868cf8a6..8df6f1fe 100644
--- a/scripts/size_attestation.json
+++ b/scripts/size_attestation.json
@@ -1,15 +1,15 @@
 {
-  "built_at": "2026-11-13T11:25:00+08:00",
-  "fingerprint": "39f4f69a673f97c33cc59b301e723ec8f1e03686f4556ac6abb1a5a6cd438796",
+  "built_at": "2026-11-13T16:20:25+08:00",
+  "fingerprint": "3c4a1381e6e0306968e2a4ce03a2d25fd72f65a7262234e7e15703599301a54d",
   "fingerprint_files": 1479,
   "fingerprint_source": "git-index",
   "gated_regions": [
     "RW_IRAM1",
     "RW_CCM"
   ],
-  "git_head": "7c505b2457d977adf7750abbb841b0453fd6bfb9",
+  "git_head": "40a2816a9971928d1ca6fa218921b86dae79bd63",
   "map": "MDK-ARM/STM32F407-Demo/STM32F407-Demo.map",
-  "map_mtime": 1794540294,
+  "map_mtime": 1794550493,
   "pct": {
     "ER_IROM1": 27.46,
     "RW_CCM": 87.89,
@@ -19,7 +19,7 @@
   "regions": {
     "ER_IROM1": {
       "max": 1048576,
-      "size": 287964
+      "size": 287968
     },
     "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": 256200,
+    "code": 256204,
     "ro_data": 31764,
     "rw_data": 2080,
     "zi_data": 152368