chore(台账): 恒剥修正让 Code 少 4 B，机器回填内存台账与同码凭证（#73）

剥头判据简化（去掉一次形态判断与一次比较）之后，产品构型 `Code` 从 249,124 变到
249,120，`ER_IROM1` 278,960 → 278,956、ROM 合计 281,012 → 281,008；`RW` / `ZI`
一字未动。台账里那些数字是受管区，按仓库约定不手改：

- `python scripts/check_mem_numbers.py --write` 回填 `docs/内存管理/RAM使用分析与优化方案.md`，
  `--scan` 复跑 exit 0；
- `python scripts/ram_baseline.py --write` 回填 `docs/内存管理/RAM预算台账.md`，
  `--gate` 现在 **PASS：RW_IRAM1 72.2 % / RW_CCM 87.9 %（阈值 92 %）**；
- `python scripts/ram_baseline.py --update` 追加 2026-11-04 趋势行，并写出本轮
  体积同码凭证 `scripts/size_attestation.json`（索引指纹 2f112c1679d6…，1468 个文件）。

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 | 278,960 B (272.42 KB) | 1,048,576 B (1024 KB) | 26.6% |
+| ER_IROM1 | 278,956 B (272.42 KB) | 1,048,576 B (1024 KB) | 26.6% |
 | RW_IRAM1 | 94,624 B (92.41 KB) | 131,072 B (128 KB) | 72.2% |
 | RW_CCM | 57,376 B (56.03 KB) | 65,280 B (64 KB) | 87.9% |
-| **Flash (ROM 合计)** | **281,012 B (274.4 KB)** | 1,048,576 B (1024 KB) | **26.8%** |
+| **Flash (ROM 合计)** | **281,008 B (274.4 KB)** | 1,048,576 B (1024 KB) | **26.8%** |
 <!-- MEM_SNAPSHOT:END -->
 
 各区的容量与常量来源：

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) | 278,960 B | 1,048,576 B | 26.6% | 参考 |
+| ER_IROM1 (Flash) | 278,956 B | 1,048,576 B | 26.6% | 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 | 94,624 B | 131,072 B | 72.2% | PASS |

scripts/ram_baseline.tsv

@@ -16,3 +16,4 @@ date	code	ro	rw	zi	er_irom1	er_pct	iram1	iram1_pct	ccm	ccm_pct	top_rwzi
 2026-10-30	246720	29836	2052	149708	276556	26.4	94336	72.0	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;lftpd.o=7884;ui_net_sink.o=6770;ui_port.o=6432;nand_ftl.o=6216;wave_ring.o=5296;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
 2026-11-02	247548	29836	2052	149740	277384	26.5	94368	72.0	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;nand_ftl.o=6216;wave_ring.o=5296;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
 2026-11-03	249112	29836	2052	149996	278948	26.6	94624	72.2	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;nand_ftl.o=6216;wave_ring.o=5296;sb_link.o=4376;ch395f.o=4162;console_log.o=4132
+2026-11-04	249120	29836	2052	149996	278956	26.6	94624	72.2	57376	87.9	heap_4.o=57376;lv_mem_core_builtin.o=16384;lftpd.o=7884;ui_net_sink.o=6802;ui_port.o=6432;nand_ftl.o=6216;wave_ring.o=5296;sb_link.o=4376;ch395f.o=4162;console_log.o=4132

scripts/size_attestation.json

@@ -1,25 +1,25 @@
 {
-  "built_at": "2026-11-02T22:19:57+08:00",
+  "built_at": "2026-11-04T09:25:23+08:00",
-  "fingerprint": "19f80087a70f1c74afb1d71fb6d754b4b647321da90b312068144a8f31a9a935",
+  "fingerprint": "2f112c1679d6145a49f70f6f208ade9a1e4fa573aad3cacdaa98b0ed2aac6855",
-  "fingerprint_files": 1466,
+  "fingerprint_files": 1468,
   "fingerprint_source": "git-index",
   "gated_regions": [
     "RW_IRAM1",
     "RW_CCM"
   ],
-  "git_head": "b8e1de5f2e2515b528b0af21bcb8b423a406b8f2",
+  "git_head": "f10bb8df659e201efbacf04978c7442493fe94df",
   "map": "MDK-ARM/STM32F407-Demo/STM32F407-Demo.map",
-  "map_mtime": 1793629184,
+  "map_mtime": 1793753528,
   "pct": {
-    "ER_IROM1": 26.45,
+    "ER_IROM1": 26.6,
     "RW_CCM": 87.89,
-    "RW_IRAM1": 72.0,
+    "RW_IRAM1": 72.19,
     "UNINIT_CCM": 18.75
   },
   "regions": {
     "ER_IROM1": {
       "max": 1048576,
-      "size": 277384
+      "size": 278956
     },
     "RW_CCM": {
       "max": 65280,
@@ -27,7 +27,7 @@
     },
     "RW_IRAM1": {
       "max": 131072,
-      "size": 94368
+      "size": 94624
     },
     "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": 247548,
+    "code": 249120,
     "ro_data": 29836,
     "rw_data": 2052,
-    "zi_data": 149740
+    "zi_data": 149996
   },
   "threshold_pct": 92.0,
   "worktree_dirt_at_stamp": 0,