UI 待机显示页接入 UA/UB/UC/IA/IB/IC 六路实时值（v1.1）

- ui_standby.c：v1 占位（6 行恒 0.00A）→ ui_data 通道一按 seq 门控取帧，
  yc 语义下标 {0,1,2,4,5,6}（跳 UN/IN）；无首帧/坏质显 --；定点格式化复用
  ui_w_editor_fmt_scaled；单位随 eng（引脚档不挂），口径逐字对齐 ui_page_ac.c
- ui_standby.h：头注与修改记录同步
- 文档 §5.2 按新口径改写；§1 R2 改为新需求口径（不再引 mockup）；§9 对应
  开放问题销项删行；版本 v1.4

验证：模拟器 0 错 0 警 + 菜单行/内容页/编码规范门禁 PASS + Keil 0 错 0 警；
--standby 截图双分支实证（UA/IA 显值、UB/UC/IB/IC 显 --）。

scripts/size_attestation.json

@@ -1,25 +1,25 @@
 {
-  "built_at": "2026-11-13T11:25:00+08:00",
-  "fingerprint": "39f4f69a673f97c33cc59b301e723ec8f1e03686f4556ac6abb1a5a6cd438796",
+  "built_at": "2026-11-13T13:11:29+08:00",
+  "fingerprint": "eb152c8e20a33b63da91fd3b5e32877b83b581c43d0c4956375ed13b6531db3f",
   "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": 1794542035,
   "pct": {
-    "ER_IROM1": 27.46,
+    "ER_IROM1": 27.48,
     "RW_CCM": 87.89,
-    "RW_IRAM1": 74.02,
+    "RW_IRAM1": 74.19,
     "UNINIT_CCM": 18.75
   },
   "regions": {
     "ER_IROM1": {
       "max": 1048576,
-      "size": 287964
+      "size": 288148
     },
     "RW_CCM": {
       "max": 65280,
@@ -27,7 +27,7 @@
     },
     "RW_IRAM1": {
       "max": 131072,
-      "size": 97024
+      "size": 97240
     },
     "UNINIT_CCM": {
       "max": 256,
@@ -37,10 +37,10 @@
   "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,
-    "ro_data": 31764,
+    "code": 256428,
+    "ro_data": 31720,
     "rw_data": 2080,
-    "zi_data": 152368
+    "zi_data": 152584
   },
   "threshold_pct": 92.0,
   "worktree_dirt_at_stamp": 0,