chore(ledger+stubs): uibound（F3）合入回填台账；ui_sink stub 随格式钩子修净

merge 9d90e00（F3 sink 往返喂位）后 @build 0/0 重编：Code=224,860 /
ER_IROM1 249,488 / RW=1,332 / ZI=135,100，lane-f 申报（+92B、RAM 79,008）
一致；凭证重盖、内存两账回填、覆盖率基线含新 ui_sink 套（39→40 套，
AGENTS 单测计数 22→23 同步）。stub 五头的空白/末行改动为格式钩子
（trailing-whitespace / end-of-file-fixer）在合并现场落笔，非语义变化。

scripts/test_coverage_baseline.json

@@ -336,6 +336,14 @@
       "lines_covered": 52,
       "lines_valid": 65
     },
+    "Drivers/BSP/UI/ui_net_sink.c": {
+      "func_rate": 0.7692,
+      "funcs_covered": 10,
+      "funcs_valid": 13,
+      "line_rate": 0.7302,
+      "lines_covered": 157,
+      "lines_valid": 215
+    },
     "Drivers/BSP/UI/ui_w_soe.c": {
       "func_rate": 1.0,
       "funcs_covered": 6,
@@ -634,6 +642,13 @@
       "lines_total": 127,
       "ok": true
     },
+    "ui_sink": {
+      "files": {
+        "Drivers/BSP/UI/ui_net_sink.c": 215
+      },
+      "lines_total": 215,
+      "ok": true
+    },
     "vol_idle_sync": {
       "files": {
         "App/fs/vol_idle_sync.c": 21
@@ -701,20 +716,21 @@
     "Drivers/BSP/NETCFG/ftp_cfg.c",
     "Drivers/BSP/NETCFG/net_cfg.c",
     "Drivers/BSP/UI/ui_data.c",
+    "Drivers/BSP/UI/ui_net_sink.c",
     "Drivers/BSP/UI/ui_w_soe.c"
   ],
   "totals": {
     "files_generated_excluded": 5,
-    "files_tested": 43,
-    "files_untested": 136,
-    "func_rate": 0.9299,
-    "funcs_covered": 451,
-    "funcs_valid": 485,
-    "line_rate": 0.8969,
-    "lines_covered": 6222,
-    "lines_valid": 6937,
-    "modules_ok": 39,
-    "modules_total": 39
+    "files_tested": 44,
+    "files_untested": 135,
+    "func_rate": 0.9257,
+    "funcs_covered": 461,
+    "funcs_valid": 498,
+    "line_rate": 0.8919,
+    "lines_covered": 6379,
+    "lines_valid": 7152,
+    "modules_ok": 40,
+    "modules_total": 40
   },
   "untested_sources": [
     {
@@ -729,10 +745,6 @@
       "code_lines": 329,
       "path": "Drivers/BSP/UI/ui_menu_view.c"
     },
-    {
-      "code_lines": 323,
-      "path": "Drivers/BSP/UI/ui_net_sink.c"
-    },
     {
       "code_lines": 300,
       "path": "Drivers/BSP/UI/ui_content_page.c"
@@ -793,6 +805,10 @@
       "code_lines": 140,
       "path": "App/app/app_main.c"
     },
+    {
+      "code_lines": 126,
+      "path": "App/task/ui_task.c"
+    },
     {
       "code_lines": 126,
       "path": "Drivers/BSP/UI/ui_menu.c"
@@ -801,10 +817,6 @@
       "code_lines": 123,
       "path": "App/task/net_task.c"
     },
-    {
-      "code_lines": 122,
-      "path": "App/task/ui_task.c"
-    },
     {
       "code_lines": 117,
       "path": "App/task/protect_task.c"
@@ -1049,6 +1061,10 @@
       "code_lines": 20,
       "path": "App/log/console_log.h"
     },
+    {
+      "code_lines": 20,
+      "path": "Drivers/BSP/UI/ui_net_sink.h"
+    },
     {
       "code_lines": 19,
       "path": "App/app/sys_events.h"
@@ -1065,10 +1081,6 @@
       "code_lines": 18,
       "path": "Drivers/BSP/NET/net_listener.h"
     },
-    {
-      "code_lines": 18,
-      "path": "Drivers/BSP/UI/ui_net_sink.h"
-    },
     {
       "code_lines": 17,
       "path": "App/algo/sample_ring.h"