完成官方管线全量逆向与 demo3 v5 复刻，清理仓库

- 逆向：Ghidra/IDA 全量反编译 CoreSDKLib.dll/ThermalSDK.dll/libthermalSDK.so/
  libcoresdk.so(ARM64)/libmagcore.so，导出 analysis/ida/export/
- 解码官方渲染管线：DDT 校准表加载->快门端点选择->Q12 插值->ref(4x type1 帧
  均值)->NUC 查表->盲元补偿->窗口->LUT1024 重建->2x 升采样->调色板
- 逐像素验证：NUC+盲元 0/19200、插值 0 误差、2x 0/76800、窗口一致
- demo3 v5：完整复刻官方管线（含 DDT 解析、FFC 状态机、快门温度驱动），
  修复 load_ddt 表错位导致的零像素问题
- 鬼影根因分析写入 analysis/reverse_20260813_full.md
- 心跳/恢复机制：analysis/session_state.md + tools/resume_rev.ps1
- 新增 tsdk_pair3 增强采集工具；历史工具归档 csdk/tools/legacy/；
  根目录抓帧残留删除，历史文档归档 analysis/history/
- csdk/README.md 完整使用文档；.gitignore/.gitattributes 补 LFS 规则

csdk/tools/legacy/tsdk_core_raw.c

@@ -0,0 +1,79 @@
+/* Official CoreSDKLib harness v2: use ThermalSDK high-level (which works),
+ * but ALSO read raw temperature via CoreSDKLib MAG_GetTemperatureData_Raw
+ * using the channel that ThermalSDK created.  To find the channel, we
+ * brute-force 0..4 after ThermalSDK Start().
+ */
+#define _WIN32_WINNT 0x0601
+#include <windows.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+
+typedef void (CALLBACK *INewIRFrame)(const unsigned char *, int, int, int);
+typedef bool (CALLBACK *fn_Start_t)(void);
+typedef void (CALLBACK *fn_Stop_t)(void);
+typedef void (CALLBACK *fn_SetNewIRFrameDelegate_t)(INewIRFrame);
+typedef int (CALLBACK *MAG_GetTemperatureDataRaw_t)(int, int *, int, int);
+typedef int (CALLBACK *MAG_GetOutputBMPdataRGB24_t)(int, unsigned char *, int, int);
+typedef int (CALLBACK *MAG_GetFilteredRaw_t)(int, unsigned short *, int);
+typedef int (CALLBACK *MAG_GetFrameStatisticalData_t)(int, void *);
+
+static volatile int g_frames;
+static void CALLBACK onIR(const unsigned char *buf, int w, int h, int ch) {
+    (void)buf; (void)w; (void)h; (void)ch;
+    g_frames++;
+}
+
+int main(void) {
+    const char *dir = "C:\\Project\\MAG160C\\IR_Camera_SDK-1.0.1\\windows\\windows\\app";
+    SetDllDirectoryA(dir);
+    HMODULE t = LoadLibraryA("ThermalSDK.dll");
+    HMODULE c = LoadLibraryA("CoreSDKLib.dll");
+    printf("ThermalSDK=%p CoreSDKLib=%p\n", (void*)t, (void*)c);
+    if (!t || !c) return 1;
+
+    fn_Start_t T_Start = (fn_Start_t)GetProcAddress(t, "Start");
+    fn_Stop_t T_Stop = (fn_Stop_t)GetProcAddress(t, "Stop");
+    fn_SetNewIRFrameDelegate_t T_Set = (fn_SetNewIRFrameDelegate_t)GetProcAddress(t, "SetNewIRFrameDelegate");
+    MAG_GetTemperatureDataRaw_t G_TempRaw = (MAG_GetTemperatureDataRaw_t)GetProcAddress(c, "MAG_GetTemperatureData_Raw");
+    MAG_GetOutputBMPdataRGB24_t G_BMP = (MAG_GetOutputBMPdataRGB24_t)GetProcAddress(c, "MAG_GetOutputBMPdataRGB24");
+    MAG_GetFilteredRaw_t G_FRaw = (MAG_GetFilteredRaw_t)GetProcAddress(c, "MAG_GetFilteredRaw");
+    printf("Start=%p TempRaw=%p BMP24=%p FilteredRaw=%p\n",
+           (void*)T_Start, (void*)G_TempRaw, (void*)G_BMP, (void*)G_FRaw);
+
+    T_Set(onIR);
+    printf("Start()...\n"); fflush(stdout);
+    BOOL ok = T_Start();
+    printf("Start=%d\n", ok); fflush(stdout);
+    Sleep(3000);
+    printf("frames=%d\n", g_frames);
+
+    /* try channels 0..4 for TempRaw */
+    static int tempdata[20000];
+    static unsigned short fraw[20000];
+    for (int chan = 0; chan < 5; ++chan) {
+        memset(tempdata, 0, sizeof(tempdata));
+        int rc = G_TempRaw(chan, tempdata, 1, 1);
+        printf("chan %d: TempRaw rc=%d t[0]=%d t[500]=%d t[9600]=%d\n",
+               chan, rc, tempdata[0], tempdata[500], tempdata[9600]);
+        if (rc && tempdata[0] != 0) {
+            /* save */
+            FILE *f = fopen("official_tempraw.bin", "wb");
+            if (f) { fwrite(tempdata, 4, 19200, f); fclose(f); }
+            printf("  saved official_tempraw.bin\n");
+            break;
+        }
+        memset(fraw, 0, sizeof(fraw));
+        int rc2 = G_FRaw(chan, fraw, 19200);
+        printf("  FilteredRaw rc=%d f[0]=%d f[500]=%d\n", rc2, fraw[0], fraw[500]);
+        if (rc2 && fraw[0] != 0) {
+            FILE *f = fopen("official_fraw.bin", "wb");
+            if (f) { fwrite(fraw, 2, 19200, f); fclose(f); }
+            printf("  saved official_fraw.bin\n");
+            break;
+        }
+    }
+    T_Stop();
+    printf("done\n");
+    return 0;
+}