Add debug and log functions to ANSLIB

.claude/scheduled_tasks.lock

@@ -0,0 +1 @@
+{"sessionId":"b4ba6a5c-5267-4098-8e7c-152012d3df22","pid":5176,"acquiredAt":1776991716766}

.claude/settings.local.json

@@ -110,7 +110,13 @@
       "Bash(tasklist //FI \"IMAGENAME eq ANSLPR-UnitTest.exe\")",
       "Bash(taskkill //PID 41856 //F)",
       "PowerShell(Stop-Process -Id 41856 -Force)",
-      "PowerShell(Start-Process -FilePath \"taskkill.exe\" -ArgumentList \"/PID\",\"41856\",\"/F\" -Verb RunAs -Wait)"
+      "PowerShell(Start-Process -FilePath \"taskkill.exe\" -ArgumentList \"/PID\",\"41856\",\"/F\" -Verb RunAs -Wait)",
+      "Bash(npm root *)",
+      "Bash(npm list *)",
+      "Bash(npm install *)",
+      "Bash(NODE_PATH=\"C:/home/alex/.npm-global/node_modules\" node build_anslib_logging_guide.js)",
+      "Bash(python \"C:/Users/nghia/AppData/Roaming/Claude/local-agent-mode-sessions/skills-plugin/d8e35aa4-a14e-4e20-b921-ba1b9a3cce86/cdda7cc8-a1c7-42ff-98b4-473ec3e8b9fb/skills/docx/scripts/office/validate.py\" \"C:/Projects/CLionProjects/ANSCORE/docs/ANSLIB_Logging_Guide.docx\")",
+      "Bash(python \"C:/Users/nghia/AppData/Roaming/Claude/local-agent-mode-sessions/skills-plugin/d8e35aa4-a14e-4e20-b921-ba1b9a3cce86/cdda7cc8-a1c7-42ff-98b4-473ec3e8b9fb/skills/docx/scripts/office/soffice.py\" --headless --convert-to pdf --outdir \"C:/Projects/CLionProjects/ANSCORE/docs\" \"C:/Projects/CLionProjects/ANSCORE/docs/ANSLIB_Logging_Guide.docx\")"
     ]
   }
 }

ANSLIB/ANSLIB.cpp

@@ -1,16 +1,31 @@
 #include "ANSLIB.h"
 #include "ANSLibsLoader.h"
 #include <memory>
+#include <mutex>
 #define LOAD_FUNC(name) \
     name##Func = (name##FuncT)GetProcAddress(dllHandle, #name); \
     if (!name##Func) { success = false; }
 namespace ANSCENTER
 {
-    ANSLIB::ANSLIB() {
+    namespace {
+        // Function-pointer typedefs for the ANSLicensingSystem C-facade exports.
+        // Resolved exactly once during PreloadSharedDllsOnce(); after that the
+        // pointers are write-once globals — concurrent reads are race-free.
+        using ANSLogger_LogFnT      = void(*)(const char*, const char*, const char*, int);
+        using ANSCENTER_IsDbgEnFnT  = int (*)(void);
+        ANSLogger_LogFnT     g_ANSLogger_LogInfo            = nullptr;
+        ANSLogger_LogFnT     g_ANSLogger_LogError           = nullptr;
+        ANSLogger_LogFnT     g_ANSLogger_LogFatal           = nullptr;
+        ANSCENTER_IsDbgEnFnT g_ANSCENTER_IsDebugViewEnabled = nullptr;
+
         // Pre-load all ANSCORE DLLs from the Shared folder using full paths.
         // This ensures the correct versions are loaded regardless of PATH order
         // (e.g., DLHUB_Runtime_Engine may contain older copies on some machines).
-        // Once loaded, Windows reuses them for all subsequent implicit dependencies.
+        // Run exactly once per process so LoadLibrary refcounts don't grow per
+        // ANSLIB instance. The DLLs are intentionally pinned for process lifetime.
+        void PreloadSharedDllsOnce() {
+            static std::once_flag s_preloadFlag;
+            std::call_once(s_preloadFlag, []() {
                 const char* sharedDir = "C:\\ProgramData\\ANSCENTER\\Shared\\";
                 const char* preloadDlls[] = {
                     "ANSLicensingSystem.dll",
@@ -23,10 +38,25 @@ namespace ANSCENTER
                     std::string fullPath = std::string(sharedDir) + preloadDlls[i];
                     LoadLibraryA(fullPath.c_str());
                 }
-
                 // Ensure all shared DLLs (OpenCV, OpenVINO, TRT, ORT) are pre-loaded
                 ANSCENTER::ANSLibsLoader::Initialize();
 
+                // Resolve logging C-facade symbols from the (now-pinned) licensing DLL.
+                // Use GetModuleHandleA — the DLL is already in this process's module
+                // list courtesy of the LoadLibraryA above, so refcount is unchanged.
+                if (HMODULE lic = GetModuleHandleA("ANSLicensingSystem.dll")) {
+                    g_ANSLogger_LogInfo            = (ANSLogger_LogFnT)    GetProcAddress(lic, "ANSLogger_LogInfo");
+                    g_ANSLogger_LogError           = (ANSLogger_LogFnT)    GetProcAddress(lic, "ANSLogger_LogError");
+                    g_ANSLogger_LogFatal           = (ANSLogger_LogFnT)    GetProcAddress(lic, "ANSLogger_LogFatal");
+                    g_ANSCENTER_IsDebugViewEnabled = (ANSCENTER_IsDbgEnFnT)GetProcAddress(lic, "ANSCENTER_IsDebugViewEnabled");
+                }
+            });
+        }
+    }
+
+    ANSLIB::ANSLIB() {
+        PreloadSharedDllsOnce();
+
         const char* dllPath = "C:\\ProgramData\\ANSCENTER\\Shared\\ANSODEngine.dll";
         dllHandle = LoadLibraryA(dllPath);
         if (!dllHandle) {
@@ -99,6 +129,10 @@ namespace ANSCENTER
             return -1;
         }
         if (CreateANSODHandle_CSFunc) {
+            if (ANSHandle && ReleaseANSODHandleFunc) {
+                ReleaseANSODHandleFunc(&ANSHandle);
+                ANSHandle = nullptr;
+            }
             const char* result = CreateANSODHandle_CSFunc(&ANSHandle, licenseKey, modelFilePath, modelFileZipPassword,
                 modelThreshold, modelConfThreshold, modelNMSThreshold,
                 1, modelType, detectionType, loadEngineOnCreation);
@@ -118,9 +152,8 @@ namespace ANSCENTER
             return -1;
         }
         if (RunInference_CPPFunc) {
-            auto imagePtr = std::make_unique<cv::Mat>(cvImage);
             try {
-                cv::Mat* rawPtr = imagePtr.get();
+                cv::Mat* rawPtr = &cvImage;
                 int result = RunInference_CPPFunc(&ANSHandle, &rawPtr, cameraId, detectionResult);
                 return result;
             }
@@ -135,9 +168,8 @@ namespace ANSCENTER
             return -1;
         }
         if (RunInferenceComplete_CPPFunc) {
-            auto imagePtr = std::make_unique<cv::Mat>(cvImage);
             try {
-                cv::Mat* rawPtr = imagePtr.get();
+                cv::Mat* rawPtr = &cvImage;
                 int result = RunInferenceComplete_CPPFunc(&ANSHandle, &rawPtr, cameraId, activeROIMode,detectionResult);
                 return result;
             }
@@ -193,6 +225,10 @@ namespace ANSCENTER
         int autoDetectEngine, int modelType, int detectionType, int loadEngineOnCreation, const char* modelFolder,std::string& labelMap)
     {
         if (!loaded || !LoadModelFromFolderFunc) return -1;
+        if (ANSHandle && ReleaseANSODHandleFunc) {
+            ReleaseANSODHandleFunc(&ANSHandle);
+            ANSHandle = nullptr;
+        }
         return LoadModelFromFolderFunc(&ANSHandle, licenseKey, modelName, className,
             detectionScoreThreshold, modelConfThreshold, modelMNSThreshold,
             autoDetectEngine, modelType, detectionType, loadEngineOnCreation,modelFolder, labelMap);
@@ -241,4 +277,27 @@ namespace ANSCENTER
         if (!loaded || !SetTrackerParametersFunc) return -1;
         return SetTrackerParametersFunc(&ANSHandle, trackerParams);
     }
+
+    // ------------------------------------------------------------------------
+    // Static logging API. Each call ensures the DLL/symbols are resolved (cheap
+    // after the first call — std::call_once degenerates to an atomic load) then
+    // forwards to the C facade. Null-pointer guard makes missing symbols a
+    // silent no-op rather than a crash.
+    // ------------------------------------------------------------------------
+    int ANSLIB::IsDebugViewEnabled() {
+        PreloadSharedDllsOnce();
+        return g_ANSCENTER_IsDebugViewEnabled ? g_ANSCENTER_IsDebugViewEnabled() : 0;
+    }
+    void ANSLIB::LogInfo(const char* src, const char* msg, const char* file, int line) {
+        PreloadSharedDllsOnce();
+        if (g_ANSLogger_LogInfo) g_ANSLogger_LogInfo(src, msg, file, line);
+    }
+    void ANSLIB::LogError(const char* src, const char* msg, const char* file, int line) {
+        PreloadSharedDllsOnce();
+        if (g_ANSLogger_LogError) g_ANSLogger_LogError(src, msg, file, line);
+    }
+    void ANSLIB::LogFatal(const char* src, const char* msg, const char* file, int line) {
+        PreloadSharedDllsOnce();
+        if (g_ANSLogger_LogFatal) g_ANSLogger_LogFatal(src, msg, file, line);
+    }
 }

ANSLIB/ANSLIB.h

@@ -6,6 +6,7 @@
 #include <windows.h>
 #include <opencv2/opencv.hpp>
 #include <opencv2/core/cuda.hpp>
+#include <cstdio>
 enum DetectionType {
 	CLASSIFICATION = 0,
 	DETECTION = 1,
@@ -263,6 +264,10 @@ namespace ANSCENTER {
     public:
         ANSLIB();
         ~ANSLIB() noexcept;
+        ANSLIB(const ANSLIB&) = delete;
+        ANSLIB& operator=(const ANSLIB&) = delete;
+        ANSLIB(ANSLIB&&) = delete;
+        ANSLIB& operator=(ANSLIB&&) = delete;
 		[[nodiscard]] static ANSLIB* Create();
 		static void Destroy(ANSLIB* instance);
 		[[nodiscard]] int Initialize(const char* licenseKey,
@@ -286,6 +291,20 @@ namespace ANSCENTER {
 		[[nodiscard]] int SetPrompt(const char* text);
 		[[nodiscard]] int SetTracker(int trackerType, int enableTracker);
 		[[nodiscard]] int SetTrackerParameters(const char* trackerParams);
+
+        // Logging — process-wide, thread-safe, no instance required.
+        // Routes to SPDLogger inside ANSLicensingSystem.dll via dynamically-resolved
+        // C exports. Silently no-ops if the DLL or symbols are unavailable.
+        static void LogInfo (const char* src, const char* msg, const char* file = "", int line = 0);
+        static void LogError(const char* src, const char* msg, const char* file = "", int line = 0);
+        static void LogFatal(const char* src, const char* msg, const char* file = "", int line = 0);
+
+        // DebugView gate. Wraps ANSCENTER_IsDebugViewEnabled() — non-zero when
+        // logging should be emitted (env var ANSCENTER_DBGVIEW or sentinel file
+        // C:\ProgramData\ANSCENTER\ansvisdebugview.txt). Cheap on the hot path.
+        // Used by the ANSLIB_DBG macro below; can also be called directly to
+        // gate expensive log-prep work.
+        static int IsDebugViewEnabled();
     private:
         HMODULE dllHandle = nullptr;
         bool loaded = false;
@@ -436,4 +455,31 @@ public:
     }
 };
 
+// ANSLIB_DBG: DebugView logging macro mirroring ANS_DBG, but the gate function
+// is dynamic-loaded inside ANSLIB.dll — consumers don't need to link or even
+// know about ANSLicensingSystem.dll. Output goes to BOTH OutputDebugStringA
+// (DebugView) and stderr, identical format to ANS_DBG: "[tag] formatted\n".
+//
+// Usage: ANSLIB_DBG("MyModule", "value=%d ptr=%p", val, ptr);
+//
+// Hot-path cost when gate is OFF: one indirect call (atomic load + branch
+// inside ANSLicensingSystem). When gate is ON: snprintf to a 1024-byte stack
+// buffer + OutputDebugStringA + fputs. No heap, no per-call allocation.
+#ifndef ANSCORE_DEBUGVIEW
+#define ANSCORE_DEBUGVIEW 1   // 1 = runtime-gated (default), 0 = hard-off (stripped)
+#endif
+#if ANSCORE_DEBUGVIEW
+#define ANSLIB_DBG(tag, fmt, ...) do { \
+    if (::ANSCENTER::ANSLIB::IsDebugViewEnabled()) { \
+        char _ansl_dbg_buf[1024]; \
+        snprintf(_ansl_dbg_buf, sizeof(_ansl_dbg_buf), "[" tag "] " fmt "\n", ##__VA_ARGS__); \
+        OutputDebugStringA(_ansl_dbg_buf); \
+        fputs(_ansl_dbg_buf, stderr); \
+        fflush(stderr); \
+    } \
+} while(0)
+#else
+#define ANSLIB_DBG(tag, fmt, ...) ((void)0)
+#endif
+
 #endif

core/ANSLicensingSystem/ANSLicense.cpp

@@ -327,6 +327,35 @@ namespace ANSCENTER
 			std::cerr << "SPDLogger::LogFatal - Exception: " << e.what() << std::endl;
 		}
 	}
+}
+
+// C facade — exported with stable C linkage so ANSLIB (and any other consumer)
+// can resolve via GetProcAddress without coupling to the C++ class ABI.
+// Each call delegates to the process-wide SPDLogger singleton; the magic-static
+// inside GetInstance handles thread-safe one-time initialisation.
+extern "C" {
+    ANSLICENSE_API void ANSLogger_LogInfo(const char* src, const char* msg, const char* file, int line) {
+        try {
+            ANSCENTER::SPDLogger::GetInstance("ANSLIB").LogInfo(
+                src ? src : "", msg ? msg : "", file ? file : "", line);
+        } catch (...) {}
+    }
+    ANSLICENSE_API void ANSLogger_LogError(const char* src, const char* msg, const char* file, int line) {
+        try {
+            ANSCENTER::SPDLogger::GetInstance("ANSLIB").LogError(
+                src ? src : "", msg ? msg : "", file ? file : "", line);
+        } catch (...) {}
+    }
+    ANSLICENSE_API void ANSLogger_LogFatal(const char* src, const char* msg, const char* file, int line) {
+        try {
+            ANSCENTER::SPDLogger::GetInstance("ANSLIB").LogFatal(
+                src ? src : "", msg ? msg : "", file ? file : "", line);
+        } catch (...) {}
+    }
+}
+
+namespace ANSCENTER
+{
 
 	EngineType ANSCENTER::ANSLicenseHelper::CheckHardwareInformation()
 	{

core/ANSLicensingSystem/ANSLicense.h

@@ -32,6 +32,15 @@
 // filesystem check runs at most once per ~2 s.
 extern "C" ANSLICENSE_API int ANSCENTER_IsDebugViewEnabled(void);
 
+// C-linkage facade over SPDLogger so consumers can dynamic-load these via
+// GetProcAddress without depending on the C++ class ABI. Each call routes to
+// the process-wide SPDLogger singleton (thread-safe magic-static init).
+extern "C" {
+    ANSLICENSE_API void ANSLogger_LogInfo (const char* src, const char* msg, const char* file, int line);
+    ANSLICENSE_API void ANSLogger_LogError(const char* src, const char* msg, const char* file, int line);
+    ANSLICENSE_API void ANSLogger_LogFatal(const char* src, const char* msg, const char* file, int line);
+}
+
 // ANS_DBG: Debug logging macro for DebugView (OutputDebugStringA on Windows).
 // Usage: ANS_DBG("MyModule", "value=%d ptr=%p", val, ptr);
 // Output: [MyModule] value=42 ptr=0x1234

docs/build_anslib_logging_guide.js

@@ -0,0 +1,412 @@
+// Build ANSLIB Logging Guide.docx — examples document for developers.
+// Run: node build_anslib_logging_guide.js
+
+const fs = require('fs');
+const path = require('path');
+const {
+  Document, Packer, Paragraph, TextRun, Table, TableRow, TableCell,
+  AlignmentType, LevelFormat, HeadingLevel, BorderStyle, WidthType,
+  ShadingType, PageOrientation
+} = require('docx');
+
+// -------- helpers ----------------------------------------------------------
+const FONT_BODY = "Calibri";
+const FONT_CODE = "Consolas";
+
+function p(text, opts = {}) {
+  return new Paragraph({
+    spacing: { after: 120 },
+    ...opts,
+    children: [new TextRun({ text, font: FONT_BODY, size: 22, ...(opts.run || {}) })],
+  });
+}
+
+function h1(text) {
+  return new Paragraph({
+    heading: HeadingLevel.HEADING_1,
+    spacing: { before: 360, after: 200 },
+    children: [new TextRun({ text, font: FONT_BODY, size: 36, bold: true, color: "1F3864" })],
+  });
+}
+
+function h2(text) {
+  return new Paragraph({
+    heading: HeadingLevel.HEADING_2,
+    spacing: { before: 280, after: 160 },
+    children: [new TextRun({ text, font: FONT_BODY, size: 28, bold: true, color: "2E74B5" })],
+  });
+}
+
+function h3(text) {
+  return new Paragraph({
+    heading: HeadingLevel.HEADING_3,
+    spacing: { before: 200, after: 100 },
+    children: [new TextRun({ text, font: FONT_BODY, size: 24, bold: true, color: "404040" })],
+  });
+}
+
+// Single-line inline-code style (uses gray-ish background via shading isn't applied to runs;
+// we just use a monospace font + light shading via a wrapping single-cell table when block).
+function codeLine(text) {
+  return new TextRun({ text, font: FONT_CODE, size: 20 });
+}
+
+// Multi-line code block — render as a one-cell table with light-gray fill,
+// each source line becomes a paragraph inside the cell.
+function codeBlock(source) {
+  const lines = source.replace(/\r\n/g, "\n").split("\n");
+  const paras = lines.map(line =>
+    new Paragraph({
+      spacing: { after: 0, line: 260 },
+      children: [new TextRun({ text: line || " ", font: FONT_CODE, size: 20 })],
+    })
+  );
+  return new Table({
+    width: { size: 9360, type: WidthType.DXA },
+    columnWidths: [9360],
+    rows: [
+      new TableRow({
+        children: [
+          new TableCell({
+            width: { size: 9360, type: WidthType.DXA },
+            shading: { fill: "F4F4F4", type: ShadingType.CLEAR },
+            margins: { top: 120, bottom: 120, left: 180, right: 180 },
+            borders: {
+              top:    { style: BorderStyle.SINGLE, size: 4, color: "DDDDDD" },
+              bottom: { style: BorderStyle.SINGLE, size: 4, color: "DDDDDD" },
+              left:   { style: BorderStyle.SINGLE, size: 4, color: "DDDDDD" },
+              right:  { style: BorderStyle.SINGLE, size: 4, color: "DDDDDD" },
+            },
+            children: paras,
+          }),
+        ],
+      }),
+    ],
+  });
+}
+
+function bullet(text, runs = null) {
+  return new Paragraph({
+    numbering: { reference: "bullets", level: 0 },
+    spacing: { after: 80 },
+    children: runs || [new TextRun({ text, font: FONT_BODY, size: 22 })],
+  });
+}
+
+function spacer() {
+  return new Paragraph({ spacing: { after: 120 }, children: [new TextRun(" ")] });
+}
+
+// ---- table builder for the cheat sheets -----------------------------------
+const CELL_BORDER = { style: BorderStyle.SINGLE, size: 4, color: "BFBFBF" };
+const CELL_BORDERS = { top: CELL_BORDER, bottom: CELL_BORDER, left: CELL_BORDER, right: CELL_BORDER };
+
+function headerCell(text, width) {
+  return new TableCell({
+    width: { size: width, type: WidthType.DXA },
+    borders: CELL_BORDERS,
+    shading: { fill: "1F3864", type: ShadingType.CLEAR },
+    margins: { top: 100, bottom: 100, left: 140, right: 140 },
+    children: [new Paragraph({
+      children: [new TextRun({ text, font: FONT_BODY, size: 22, bold: true, color: "FFFFFF" })],
+    })],
+  });
+}
+
+function bodyCell(text, width, opts = {}) {
+  const runs = Array.isArray(text)
+    ? text
+    : [new TextRun({ text, font: opts.code ? FONT_CODE : FONT_BODY, size: 20 })];
+  return new TableCell({
+    width: { size: width, type: WidthType.DXA },
+    borders: CELL_BORDERS,
+    shading: opts.shade ? { fill: opts.shade, type: ShadingType.CLEAR } : undefined,
+    margins: { top: 80, bottom: 80, left: 140, right: 140 },
+    children: [new Paragraph({ children: runs })],
+  });
+}
+
+function sheetTable(columnWidths, headers, rows) {
+  const total = columnWidths.reduce((a, b) => a + b, 0);
+  return new Table({
+    width: { size: total, type: WidthType.DXA },
+    columnWidths,
+    rows: [
+      new TableRow({
+        tableHeader: true,
+        children: headers.map((h, i) => headerCell(h, columnWidths[i])),
+      }),
+      ...rows.map(row =>
+        new TableRow({
+          children: row.map((c, i) => {
+            if (c && typeof c === 'object' && c.runs) {
+              return bodyCell(c.runs, columnWidths[i], c.opts || {});
+            }
+            return bodyCell(c, columnWidths[i]);
+          }),
+        })
+      ),
+    ],
+  });
+}
+
+// =========================================================================
+// Document content
+// =========================================================================
+const children = [];
+
+// ---------- Title ----------
+children.push(new Paragraph({
+  spacing: { after: 80 },
+  alignment: AlignmentType.LEFT,
+  children: [new TextRun({ text: "ANSLIB Logging API", font: FONT_BODY, size: 48, bold: true, color: "1F3864" })],
+}));
+children.push(new Paragraph({
+  spacing: { after: 360 },
+  children: [new TextRun({ text: "Developer guide — usage examples for ANSLIB_DBG, LogInfo, LogError, LogFatal", font: FONT_BODY, size: 24, italics: true, color: "595959" })],
+}));
+
+// ---------- Overview ----------
+children.push(h1("Overview"));
+children.push(p("ANSLIB exposes a small logging API that consumers can use without linking against ANSLicensingSystem.dll or any spdlog headers. All symbols are dynamically loaded inside ANSLIB; users only need to include ANSLIB.h and link ANSLIB.lib."));
+children.push(p("Two flavours are provided:"));
+children.push(bullet("ANSLIB_DBG — a printf-style macro for trace breadcrumbs that can be turned on or off remotely (DebugView-style logging)."));
+children.push(bullet("ANSCENTER::ANSLIB::LogInfo / LogError / LogFatal — leveled logging that writes through SPDLogger to the rolling log file."));
+
+// ---------- Setup ----------
+children.push(h1("Setup"));
+children.push(p("Same prerequisites for every example below. Add this to any consumer translation unit:"));
+children.push(codeBlock(
+`#include "ANSLIB.h"   // brings everything: static methods + ANSLIB_DBG macro
+
+// Optional alias to shorten call sites:
+using LOG = ANSCENTER::ANSLIB;`));
+children.push(p("No other includes, no extra .lib to link beyond ANSLIB.lib."));
+
+// ---------- Example 1 ----------
+children.push(h1("Example 1 — Function entry/exit (ANSLIB_DBG, the workhorse)"));
+children.push(codeBlock(
+`int LoadConfig(const std::string& path) {
+    ANSLIB_DBG("Config", "LoadConfig entry path=%s", path.c_str());
+
+    if (path.empty()) {
+        ANSLIB_DBG("Config", "empty path, bailing");
+        return -1;
+    }
+
+    int rc = ParseFile(path);
+    ANSLIB_DBG("Config", "ParseFile returned rc=%d", rc);
+    return rc;
+}`));
+children.push(p("DebugView output (only when the gate is on):"));
+children.push(codeBlock(
+`[Config] LoadConfig entry path=C:\\models\\car.cfg
+[Config] ParseFile returned rc=0`));
+children.push(p("This is the drop-in replacement for ANS_DBG. Use it for breadcrumb logging that you want to be able to flip on/off remotely."));
+
+// ---------- Example 2 ----------
+children.push(h1("Example 2 — Error path (LogError, persisted to spdlog file)"));
+children.push(p("When something goes wrong and you want it in the rolling log file (not just DebugView), use LogError:"));
+children.push(codeBlock(
+`int InitEngine(const std::string& modelPath) {
+    auto* engine = ANSCENTER::ANSLIB::Create();
+    if (!engine) {
+        LOG::LogError("InitEngine", "ANSLIB::Create returned null", __FILE__, __LINE__);
+        return -1;
+    }
+
+    std::string labels;
+    int rc = engine->Initialize("license-key", modelPath.c_str(), "",
+                                0.5f, 0.5f, 0.4f, 8, 5, 1, labels);
+    if (rc < 0) {
+        char detail[256];
+        snprintf(detail, sizeof(detail),
+                 "Initialize failed rc=%d model=%s", rc, modelPath.c_str());
+        LOG::LogError("InitEngine", detail, __FILE__, __LINE__);
+        ANSCENTER::ANSLIB::Destroy(engine);
+        return rc;
+    }
+
+    LOG::LogInfo("InitEngine", "engine ready", __FILE__, __LINE__);
+    return 0;
+}`));
+children.push(p("Rolling log file output (ANSLIB.log or whichever name spdlog has):"));
+children.push(codeBlock(
+`[2026-04-26 14:32:11.483] [error] [foo.cpp] [42] InitEngine: Initialize failed rc=-1 model=C:\\models\\car.zip
+[2026-04-26 14:32:11.484] [info]  [foo.cpp] [50] InitEngine: engine ready`));
+
+// ---------- Example 3 ----------
+children.push(h1("Example 3 — Fatal / unrecoverable (LogFatal)"));
+children.push(p("Use when the process can't continue — e.g. license check failed, GPU lost, mandatory model missing:"));
+children.push(codeBlock(
+`void OnGpuDeviceLost() {
+    LOG::LogFatal("Engine",
+                  "CUDA device lost, cannot continue inference",
+                  __FILE__, __LINE__);
+    std::abort();   // or whatever your shutdown path is
+}`));
+
+// ---------- Example 4 ----------
+children.push(h1("Example 4 — Mixing both (recommended pattern)"));
+children.push(p("Use ANSLIB_DBG for the chatty trace breadcrumbs and LogInfo / LogError / LogFatal for things you want preserved in the file:"));
+children.push(codeBlock(
+`int RunBatch(const std::vector<cv::Mat>& frames) {
+    ANSLIB_DBG("Batch", "RunBatch entry frames=%zu", frames.size());
+
+    if (frames.empty()) {
+        LOG::LogError("Batch", "called with empty frame list", __FILE__, __LINE__);
+        return -1;
+    }
+
+    int processed = 0;
+    for (const auto& f : frames) {
+        ANSLIB_DBG("Batch", "processing frame %d (%dx%d)", processed, f.cols, f.rows);
+        // ...inference...
+        ++processed;
+    }
+
+    char summary[128];
+    snprintf(summary, sizeof(summary), "RunBatch OK processed=%d", processed);
+    LOG::LogInfo("Batch", summary, __FILE__, __LINE__);
+
+    ANSLIB_DBG("Batch", "RunBatch exit");
+    return processed;
+}`));
+children.push(p("DebugView shows the full trace; the log file keeps just the entry/exit summary. This keeps the file small but lets you toggle full tracing remotely when something goes wrong."));
+
+// ---------- Example 5 ----------
+children.push(h1("Example 5 — Gating expensive log preparation"));
+children.push(p("ANSLIB_DBG already gates the snprintf for you. But if preparing the message itself is expensive (serializing a struct, dumping a Mat, walking a tree), check the gate first manually:"));
+children.push(codeBlock(
+`void DumpDetections(const std::vector<ANSCENTER::Object>& dets) {
+    if (!ANSCENTER::ANSLIB::IsDebugViewEnabled()) return;   // skip the whole prep
+
+    std::string dump;
+    for (const auto& d : dets) {
+        dump += d.className + "(" + std::to_string(d.confidence) + ") ";
+    }
+    ANSLIB_DBG("Detections", "%zu objects: %s", dets.size(), dump.c_str());
+}`));
+children.push(p("This skips the entire string-building loop when the gate is off."));
+
+// ---------- Example 6 ----------
+children.push(h1("Example 6 — Logging from a class method"));
+children.push(p("The __FILE__ / __LINE__ defaults make instance methods cleaner if you don't need them:"));
+children.push(codeBlock(
+`class MyDetector {
+public:
+    void Process(const cv::Mat& img) {
+        ANSLIB_DBG("MyDetector", "Process %dx%d", img.cols, img.rows);
+
+        if (img.empty()) {
+            // No file/line — defaults to "" / 0
+            LOG::LogError("MyDetector", "empty image input");
+            return;
+        }
+        // ...
+    }
+};`));
+
+// ---------- Example 7 ----------
+children.push(h1("Example 7 — Macro for \"log everywhere with caller info\" (optional)"));
+children.push(p("If you want every LogInfo call to auto-include __FILE__ / __LINE__, define a one-liner in your own code:"));
+children.push(codeBlock(
+`#define MYAPP_INFO(tag, msg)  ::ANSCENTER::ANSLIB::LogInfo (tag, msg, __FILE__, __LINE__)
+#define MYAPP_ERROR(tag, msg) ::ANSCENTER::ANSLIB::LogError(tag, msg, __FILE__, __LINE__)
+
+// Usage:
+MYAPP_INFO ("Boot", "starting up");
+MYAPP_ERROR("Net",  "connection refused");`));
+children.push(p("This keeps call sites short while preserving file/line tracking in the rolling log."));
+
+// ---------- Cheat sheet 1 ----------
+children.push(h1("Cheat sheet — pick the right call"));
+children.push(sheetTable(
+  [3000, 3360, 3000],
+  ["Want to log…", "Use", "Goes to"],
+  [
+    ["Trace / breadcrumb that's toggled per-incident",
+     { runs: [codeLine('ANSLIB_DBG("Tag", "fmt %d", x)')] },
+     "DebugView + stderr (when gate is on)"],
+    ["Notable event (started, finished, config loaded)",
+     { runs: [codeLine('LOG::LogInfo("Tag", "msg", __FILE__, __LINE__)')] },
+     "spdlog file + console"],
+    ["Recoverable error (will retry, will skip, etc.)",
+     { runs: [codeLine('LOG::LogError("Tag", "msg", __FILE__, __LINE__)')] },
+     "spdlog file + console"],
+    ["Unrecoverable (about to crash / abort)",
+     { runs: [codeLine('LOG::LogFatal("Tag", "msg", __FILE__, __LINE__)')] },
+     "spdlog file + console (critical level)"],
+  ]
+));
+children.push(spacer());
+
+// ---------- Cheat sheet 2 ----------
+children.push(h1("Toggling the DebugView gate at runtime"));
+children.push(p("LogInfo / LogError / LogFatal are not gated — they always go to the spdlog file. Only ANSLIB_DBG is gated by the mechanism below."));
+children.push(spacer());
+children.push(sheetTable(
+  [4680, 4680],
+  ["Action", "Effect"],
+  [
+    [{ runs: [new TextRun({ text: "Drop file ", font: FONT_BODY, size: 20 }),
+              codeLine("C:\\ProgramData\\ANSCENTER\\ansvisdebugview.txt")] },
+     { runs: [new TextRun({ text: "Turns ", font: FONT_BODY, size: 20 }),
+              codeLine("ANSLIB_DBG"), new TextRun({ text: " (and ", font: FONT_BODY, size: 20 }),
+              codeLine("ANS_DBG"), new TextRun({ text: ") ON within ~2s", font: FONT_BODY, size: 20 })] }],
+    ["Delete that file", "Turns them OFF within ~2s"],
+    [{ runs: [codeLine("set ANSCENTER_DBGVIEW=1"), new TextRun({ text: " (or ", font: FONT_BODY, size: 20 }),
+              codeLine("=0"), new TextRun({ text: ")", font: FONT_BODY, size: 20 })] },
+     "Forces ON or OFF — overrides the file"],
+  ]
+));
+
+// ---------- Operational notes ----------
+children.push(h1("Operational notes"));
+children.push(bullet("All four entry points (ANSLIB_DBG, LogInfo, LogError, LogFatal) are thread-safe and require no instance — they're static methods that lazy-resolve their underlying DLL symbols on first call."));
+children.push(bullet("If ANSLicensingSystem.dll is missing on the target machine, every logging call silently no-ops (no crash, no exception). The application keeps running."));
+children.push(bullet("ANSLIB_DBG output format is identical to the original ANS_DBG: \"[tag] formatted\\n\" emitted to both OutputDebugStringA and stderr."));
+children.push(bullet("Don't log from static destructors. DLL unload order during process shutdown is undefined on Windows — calling into the licensing DLL after it has been unmapped will crash."));
+children.push(bullet("To strip ANSLIB_DBG entirely at compile time (for performance-critical builds), define -DANSCORE_DEBUGVIEW=0 when compiling the consumer translation unit. The macro becomes ((void)0)."));
+
+// =========================================================================
+// Document assembly
+// =========================================================================
+const doc = new Document({
+  styles: {
+    default: { document: { run: { font: FONT_BODY, size: 22 } } },
+    paragraphStyles: [
+      { id: "Heading1", name: "Heading 1", basedOn: "Normal", next: "Normal", quickFormat: true,
+        run: { size: 36, bold: true, font: FONT_BODY, color: "1F3864" },
+        paragraph: { spacing: { before: 360, after: 200 }, outlineLevel: 0 } },
+      { id: "Heading2", name: "Heading 2", basedOn: "Normal", next: "Normal", quickFormat: true,
+        run: { size: 28, bold: true, font: FONT_BODY, color: "2E74B5" },
+        paragraph: { spacing: { before: 280, after: 160 }, outlineLevel: 1 } },
+      { id: "Heading3", name: "Heading 3", basedOn: "Normal", next: "Normal", quickFormat: true,
+        run: { size: 24, bold: true, font: FONT_BODY, color: "404040" },
+        paragraph: { spacing: { before: 200, after: 100 }, outlineLevel: 2 } },
+    ],
+  },
+  numbering: {
+    config: [
+      { reference: "bullets",
+        levels: [{ level: 0, format: LevelFormat.BULLET, text: "•", alignment: AlignmentType.LEFT,
+          style: { paragraph: { indent: { left: 720, hanging: 360 } } } }] },
+    ],
+  },
+  sections: [{
+    properties: {
+      page: {
+        size: { width: 12240, height: 15840 },
+        margin: { top: 1440, right: 1440, bottom: 1440, left: 1440 },
+      },
+    },
+    children,
+  }],
+});
+
+const outPath = path.join(__dirname, "ANSLIB_Logging_Guide.docx");
+Packer.toBuffer(doc).then(buf => {
+  fs.writeFileSync(outPath, buf);
+  console.log("Wrote", outPath, "(" + buf.length + " bytes)");
+});