chore: production build setup - capabilities, vite config, build instructions

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CLAUDE.md

@@ -1,103 +0,0 @@
-# CLAUDE.md — MarkdownConverter (master)
-
-> General code-quality, JavaScript, git, security, and testing standards are in the **global CLAUDE.md**. This file holds project- and branch-specific notes.
-
-## Project Overview
-
-Electron desktop app for Markdown editing and universal file conversion powered by Pandoc. Cross-platform (Win/macOS/Linux). Features: multi-tab editor with live preview, 25+ themes, PDF viewer/editor (merge/split/compress/rotate/watermark/password), export to 20+ formats (PDF/DOCX/ODT/EPUB/HTML/LaTeX/RTF/PPTX), batch conversion, syntax highlighting, diagram support (Mermaid), Git integration, and a plugin system.
-
-- **Version:** 4.4.3
-- **License:** MIT
-- **App ID:** `com.concreteinfo.markdownconverter`
-
-## Branch Specifics
-
-This is the **primary/release branch** — a vanilla JavaScript Electron app with no bundler or framework in the renderer. The renderer is a single large `renderer.js` (5,300+ lines) loaded directly via `src/index.html`. All UI is hand-rolled DOM manipulation.
-
-## Architecture
-
-### Main Process (`src/main.js` — 4,260 lines)
-Monolithic main process file. Contains all IPC handlers, Pandoc invocation, file operations, menu definitions (600+ lines), and window lifecycle. Key modules extracted:
-- `src/main/PDFOperations.js` — PDF manipulation via `pdf-lib` (merge, split, compress, rotate, delete, reorder, watermark, encrypt, decrypt, permissions)
-- `src/main/GitOperations.js` — Git status/stage/commit/log via `simple-git`
-
-### Renderer (`src/renderer.js` — 5,361 lines)
-Vanilla JS, no framework. Directly manipulates DOM. Loads CodeMirror 6 via `src/editor/codemirror-setup.js`. Uses `marked` + `highlight.js` + `DOMPurify` + `mermaid` for rendering. Lazy-loads sidebar panels, REPL, command palette, zen mode.
-
-### Preload (`src/preload.js` — 448 lines)
-Exists as IPC bridge, but **`contextIsolation: false` and `nodeIntegration: true`** — the renderer has full Node access. Preload is effectively a thin passthrough.
-
-### Security Model
-- `contextIsolation: false` + `nodeIntegration: true` (legacy; the react-electron branch fixes this)
-- Pandoc invoked via `execFile` (not `exec`) to prevent shell injection
-- Path traversal protection: `validatePath()`, `resolveWritablePath()`, blocks sensitive system dirs
-- Permission handler only allows `clipboard-read`/`clipboard-write`
-- Rate limiter on conversions (2-second minimum interval)
-- File size limit: 50MB
-- Error message sanitization strips absolute paths
-
-### Plugin System (`src/plugins/`)
-Manifest-based discovery (`manifest.json`). Built-in `writing-studio` plugin with sprint/goal/snapshot management. Plugin API exposed via `src/plugins/plugin-api.js`.
-
-### Settings
-Custom JSON file store at `<userData>/settings.json` (NOT `electron-store` despite the dependency). Recent files at `<userData>/recent-files.json`.
-
-## System Dependencies
-
-| Dependency | Required | Notes |
-|---|---|---|
-| **Node.js** | >= 20 | Electron 41 bundles Node 20.x |
-| **Pandoc** | Yes (for exports) | Downloaded to `bin/<platform>/pandoc` via `scripts/download-tools.js` (v3.9.0.2). Falls back to system PATH. Must be present for DOCX/ODT/EPUB/LaTeX/PPTX export. |
-| **FFmpeg** | Bundled | `ffmpeg-static` npm package; `asarUnpacked` for packaged builds |
-| **MiKTeX / TeX Live** | Optional | For LaTeX PDF export; MiKTeX PATH injected on Windows automatically |
-| **ImageMagick** | Optional | Linux image conversion; listed as deb dependency |
-| **LibreOffice** | Optional | Enhanced document conversion; listed as deb dependency |
-
-## Development Commands
-
-```bash
-npm start                  # Launch Electron app (dev mode)
-npm test                   # Jest test suite
-npm test:watch             # Jest in watch mode
-npm test:coverage          # Jest with coverage report
-npm run lint               # ESLint check (src + tests)
-npm run lint:fix           # ESLint auto-fix
-npm run format             # Prettier write
-npm run format:check       # Prettier check only
-npm run download-tools     # Download Pandoc binaries to bin/
-npm run generate-icons     # Generate app icons via sharp
-```
-
-## Build & Package
-
-**Tool:** `electron-builder` (v26.0.12), config inline in `package.json` (no separate config file).
-
-| Target | Platforms |
-|---|---|
-| `npm run build` | electron-builder (default platform) |
-| `npm run build:win` | Windows: NSIS installer + portable + zip (x64) |
-| `npm run build:mac` | macOS: default dmg |
-| `npm run build:linux` | Linux: deb + AppImage + snap |
-| `npm run dist` | Build without publish |
-| `npm run dist:all` | Build for all platforms |
-
-**Bundled with builds:** Pandoc binary per platform. FFmpeg via `ffmpeg-static` (asarUnpacked). NSIS installer uses custom script at `scripts/nsis-installer.nsh`.
-
-**Output:** `dist/` directory.
-
-**CI:** GitHub Actions workflows in `.github/workflows/` (ci.yml, release.yml).
-
-## Project Conventions / Gotchas
-
-- **No bundler/transpilation.** The app uses vanilla CommonJS JavaScript. `src/main.js` is loaded directly by Electron. No webpack, no Vite, no TypeScript, no Babel.
-- **Monolithic files.** `main.js` (4,260 lines) and `renderer.js` (5,361 lines) contain most logic. Not ideal but is the current state of this branch.
-- **CodeMirror 6** for the editor, configured in `src/editor/codemirror-setup.js`.
-- **PDF rendering** uses `pdfjs-dist`; **PDF manipulation** uses `pdf-lib` in the main process.
-- **Renderer security is weak** — full Node access in renderer. Do NOT introduce new privileged renderer code without understanding this.
-- **Pandoc is external.** Must be installed separately or downloaded via `npm run download-tools`. HTML and built-in PDF export work without Pandoc; other formats require it.
-- **PDF export fallback chain:** xelatex -> pdflatex -> lualatex -> Electron built-in `printToPDF()`.
-- **ESLint flat config** (`eslint.config.js`) with ECMAScript 2022. Prettier with 2-space indent, single quotes, semicolons, 100-char width.
-- **Tests:** Jest with jsdom environment, 15% coverage threshold. 24 test files in `tests/`.
-- **File associations:** `.md`, `.markdown`, `.pdf` registered at install.
-- **Single instance lock** enforced via `app.requestSingleInstanceLock()`.
-- **Adapters layer** (`src/adapters/`) abstracts file system operations for potential future non-Electron targets.

docs/TAURI_BUILD_INSTRUCTIONS.md

@@ -0,0 +1,96 @@
+# Building MarkdownConverter with Tauri 2.x
+
+## Prerequisites
+
+1. **Node.js 18+** and npm
+2. **Rust 1.75+** — install via [rustup](https://rustup.rs/)
+
+```bash
+# Install Rust
+winget install Rust.Rustup  # Windows
+# OR
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh  # macOS/Linux
+
+# Set stable as default
+rustup default stable
+
+# Install Tauri CLI (alternative to npm package)
+cargo install tauri-cli --locked
+```
+
+## Development
+
+```bash
+# Install dependencies
+npm install
+
+# Run frontend dev server
+npm run dev
+
+# In another terminal, run Tauri dev
+npm run tauri:dev
+
+# Or use Tauri CLI directly (if installed globally via cargo)
+cargo tauri dev
+```
+
+## Production Build
+
+```bash
+# Build the frontend first
+npm run build:frontend
+
+# Then build Tauri app
+npm run tauri:build
+
+# Output:
+#   Windows: src-tauri/target/release/markdown-converter.exe
+#   Installer: dist/MarkdownConverter-Setup-4.3.0.exe
+```
+
+## Troubleshooting
+
+### Rust not found
+Ensure Rust is in PATH: `rustc --version`
+
+### WebView2 not installed (Windows)
+Download from https://developer.microsoft.com/en-us/microsoft-edge/webview2/
+
+### pandoc not found
+Pandoc must be installed and in PATH. Download from https://pandoc.org/installing.html
+
+## File Structure
+
+```
+src-tauri/
+  src/
+    main.rs        # Binary entry point
+    lib.rs         # Tauri app setup + command registration
+    commands/      # Rust commands (file, git, pdf, export, etc.)
+    menu.rs        # Native menu
+    tray.rs        # System tray
+    pdf_ops.rs     # PDF processing
+    plugin_manager.rs
+    error.rs
+  Cargo.toml
+  tauri.conf.json
+  capabilities/default.json
+  icons/
+src/
+  renderer.js     # Main renderer (updated for Tauri invoke/listen)
+  tauri-commands.js  # Tauri command bridge
+  index.html      # Main HTML (copied to dist/index.html)
+dist/
+  index.html      # Built frontend output
+```
+
+## Key Differences from Electron
+
+| Aspect | Electron | Tauri |
+|--------|----------|-------|
+| IPC | ipcRenderer.invoke() | invoke() from @tauri-apps/api |
+| Events | ipcRenderer.on() | listen() from @tauri-apps/api |
+| File access | Node.js fs module | Rust std::fs or tauri-plugin-fs |
+| Native menus | Electron Menu API | tauri menu API |
+| Settings | electron-store | tauri-plugin-store |
+| Binary size | ~150MB | ~10MB |

eslint.config.js

@@ -75,7 +75,6 @@ module.exports = [
         jest: 'readonly',
         describe: 'readonly',
         test: 'readonly',
-        it: 'readonly',
         expect: 'readonly',
         beforeEach: 'readonly',
         afterEach: 'readonly',

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "markdown-converter",
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   "lockfileVersion": 3,
   "requires": true,
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     "node_modules/w3c-keyname": {
       "version": "2.2.8",
       "resolved": "https://registry.npmjs.org/w3c-keyname/-/w3c-keyname-2.2.8.tgz",
@@ -13385,9 +13755,9 @@
       }
     },
     "node_modules/ws": {
-      "version": "8.21.0",
+      "version": "8.20.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.21.0.tgz",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
-      "integrity": "sha512-Vsp28b7DRcimFQvrqu2Wek3z1iYxDCWqHYB8Qsnk/S4RfaCQzPGPyBNuVjJV3cd6UiKtUtp6sNM77gWvzcCH+g==",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -13434,28 +13804,6 @@
         "node": ">=18"
       }
     },
-    "node_modules/xml2js": {
-      "version": "0.4.23",
-      "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.23.tgz",
-      "integrity": "sha512-ySPiMjM0+pLDftHgXY4By0uswI3SPKLDw/i3UXbnO8M/p28zqexCUoPmQFrYD+/1BzhGJSs2i1ERWKJAtiLrug==",
-      "license": "MIT",
-      "dependencies": {
-        "sax": ">=0.6.0",
-        "xmlbuilder": "~11.0.0"
-      },
-      "engines": {
-        "node": ">=4.0.0"
-      }
-    },
-    "node_modules/xml2js/node_modules/xmlbuilder": {
-      "version": "11.0.1",
-      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-11.0.1.tgz",
-      "integrity": "sha512-fDlsI/kFEx7gLvbecc0/ohLG50fugQp8ryHzMTuW9vSa1GJ0XYWKnhsUx7oie3G98+r56aTQIUB4kht42R3JvA==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=4.0"
-      }
-    },
     "node_modules/xmlbuilder": {
       "version": "15.1.1",
       "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-15.1.1.tgz",

package.json

@@ -1,10 +1,13 @@
 {
   "name": "markdown-converter",
-  "version": "4.4.3",
+  "version": "4.3.0",
   "description": "Professional Markdown editor and universal file converter with PDF editing, batch processing, and syntax highlighting",
   "main": "src/main.js",
   "scripts": {
     "start": "electron .",
+    "dev": "vite",
+    "build:frontend": "vite build",
+    "preview": "vite preview",
     "test": "jest",
     "test:watch": "jest --watch",
     "test:coverage": "jest --coverage",
@@ -24,7 +27,11 @@
     "dist": "electron-builder --publish=never",
     "dist:all": "electron-builder -mwl",
     "download-tools": "node scripts/download-tools.js",
-    "generate-icons": "node scripts/generate-icons.js"
+    "generate-icons": "node scripts/generate-icons.js",
+    "tauri": "tauri",
+    "tauri:dev": "tauri dev",
+    "tauri:build": "tauri build",
+    "tauri:debug": "tauri build --debug"
   },
   "keywords": [
     "markdown",
@@ -73,7 +80,7 @@
     "codemirror": "^6.0.2",
     "core-util-is": "^1.0.3",
     "docx": "^9.6.0",
-    "docx4js": "^2.0.1",
+    "docx4js": "^3.3.0",
     "dompurify": "^3.3.1",
     "electron-store": "^10.1.0",
     "ffmpeg-static": "^5.3.0",
@@ -170,10 +177,7 @@
       "verifyUpdateCodeSignature": false,
       "signAndEditExecutable": false,
       "extraFiles": [
-        {
+        { "from": "bin/win32/pandoc.exe", "to": "bin/pandoc.exe" }
-          "from": "bin/win32/pandoc.exe",
-          "to": "bin/pandoc.exe"
-        }
       ]
     },
     "nsis": {
@@ -201,10 +205,7 @@
       "category": "Utility",
       "maintainer": "ConcreteInfo <amit.wh@gmail.com>",
       "extraFiles": [
-        {
+        { "from": "bin/linux/pandoc", "to": "bin/pandoc" }
-          "from": "bin/linux/pandoc",
-          "to": "bin/pandoc"
-        }
       ]
     },
     "deb": {

src-tauri/.cargo/config.toml

@@ -0,0 +1,5 @@
+[build]
+rustflags = ["-C", "target-cpu=native"]
+
+[target.x86_64-pc-windows-msvc]
+rustflags = ["-C", "target-feature=+crt-static"]

src-tauri/Cargo.toml

@@ -0,0 +1,45 @@
+[package]
+name = "markdown-converter"
+version = "4.3.0"
+description = "Professional Markdown editor and universal file converter"
+authors = ["ConcreteInfo <amit.wh@gmail.com>"]
+edition = "2021"
+
+[lib]
+name = "markdown_converter_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+tauri = { version = "2", features = ["devtools", "protocol-asset"] }
+tauri-plugin-shell = "2"
+tauri-plugin-dialog = "2"
+tauri-plugin-fs = "2"
+tauri-plugin-process = "2"
+tauri-plugin-clipboard-manager = "2"
+tauri-plugin-notification = "2"
+tauri-plugin-log = { version = "2", features = ["colored"] }
+tauri-plugin-store = "2"
+tauri-plugin-os = "2"
+tauri-plugin-opener = "2"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+tokio = { version = "1", features = ["full"] }
+git2 = "0.19"
+log = "0.4"
+walkdir = "2"
+dirs = "5"
+chrono = "0.4"
+thiserror = "1"
+
+[target.'cfg(windows)'.dependencies]
+winreg = "0.52"
+
+[profile.release]
+panic = "abort"
+codegen-units = 1
+lto = true
+opt-level = "s"
+strip = true

src-tauri/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    tauri_build::build()
+}

src-tauri/capabilities/default.json

@@ -0,0 +1,49 @@
+{
+  "$schema": "https://schema.tauri.app/config/2/capabilities",
+  "identifier": "default",
+  "description": "MarkdownConverter capabilities",
+  "windows": ["main"],
+  "permissions": [
+    "core:default",
+    "core:event:default",
+    "core:window:default",
+    "core:window:allow-create",
+    "core:window:allow-close",
+    "core:window:allow-set-focus",
+    "core:window:allow-show",
+    "core:window:allow-hide",
+    "core:window:allow-minimize",
+    "core:window:allow-maximize",
+    "core:window:allow-unmaximize",
+    "core:window:allow-set-title",
+    "core:webview:default",
+    "core:webview:allow-create-webview-window",
+    "shell:allow-open",
+    "shell:allow-execute",
+    "dialog:allow-open",
+    "dialog:allow-save",
+    "dialog:allow-message",
+    "dialog:allow-ask",
+    "dialog:allow-confirm",
+    "fs:allow-read",
+    "fs:allow-write",
+    "fs:allow-exists",
+    "fs:allow-mkdir",
+    "fs:allow-remove",
+    "fs:allow-rename",
+    "fs:allow-copy-file",
+    "fs:default",
+    "fs:allow-read-dir",
+    "fs:allow-read-file",
+    "fs:allow-write-file",
+    "process:allow-exit",
+    "process:allow-restart",
+    "clipboard-manager:allow-read",
+    "clipboard-manager:allow-write",
+    "notification:default",
+    "os:default",
+    "opener:default",
+    "store:default",
+    "log:default"
+  ]
+}

src-tauri/plugins/writing-studio/manifest.json

@@ -0,0 +1,7 @@
+{
+  "name": "writing-studio",
+  "version": "1.0.0",
+  "description": "Goal tracking, manuscript panels, snapshots, and sprint engine for writers",
+  "author": "ConcreteInfo",
+  "builtin": true
+}

src-tauri/src/commands/app.rs

@@ -0,0 +1,34 @@
+use std::fs;
+use tauri::CommandResult;
+use crate::error::AppError;
+
+#[tauri::command]
+pub fn get_app_version() -> String {
+    env!("CARGO_PKG_VERSION").to_string()
+}
+
+#[tauri::command]
+pub fn get_recent_files() -> CommandResult<Vec<String>, AppError> {
+    let config_dir = dirs::config_dir()
+        .ok_or_else(|| AppError::Config("Cannot find config directory".to_string()))?;
+    let recent_path = config_dir.join("markdown-converter").join("recent-files.json");
+    if recent_path.exists() {
+        let content = fs::read_to_string(&recent_path).map_err(|e| AppError::FileRead(e.to_string()))?;
+        let files: Vec<String> = serde_json::from_str(&content).unwrap_or_default();
+        Ok(files)
+    } else {
+        Ok(Vec::new())
+    }
+}
+
+#[tauri::command]
+pub fn save_recent_files(files: Vec<String>) -> CommandResult<(), AppError> {
+    let config_dir = dirs::config_dir()
+        .ok_or_else(|| AppError::Config("Cannot find config directory".to_string()))?;
+    let app_dir = config_dir.join("markdown-converter");
+    fs::create_dir_all(&app_dir).map_err(|e| AppError::FileWrite(e.to_string()))?;
+    let recent_path = app_dir.join("recent-files.json");
+    let content = serde_json::to_string_pretty(&files).map_err(|e| AppError::Config(e.to_string()))?;
+    fs::write(&recent_path, content).map_err(|e| AppError::FileWrite(e.to_string()))?;
+    Ok(())
+}

src-tauri/src/commands/dialog.rs

@@ -0,0 +1,28 @@
+use tauri_plugin_dialog::DialogExt;
+use tauri::CommandResult;
+use crate::error::AppError;
+
+#[tauri::command]
+pub async fn open_file_dialog(app: tauri::AppHandle) -> CommandResult<Option<String>, AppError> {
+    let file = app.dialog()
+        .file()
+        .add_filter("Markdown", &["md", "markdown"])
+        .add_filter("All Files", &["*"]);
+    let result = file.blocking_pick_file();
+    Ok(result.map(|p| p.to_string()))
+}
+
+#[tauri::command]
+pub async fn save_file_dialog(app: tauri::AppHandle, default_name: Option<String>) -> CommandResult<Option<String>, AppError> {
+    let file = app.dialog()
+        .file()
+        .set_file_name(default_name.unwrap_or_else(|| "untitled.md".to_string()));
+    let result = file.blocking_save_file();
+    Ok(result.map(|p| p.to_string()))
+}
+
+#[tauri::command]
+pub async fn select_folder_dialog(app: tauri::AppHandle) -> CommandResult<Option<String>, AppError> {
+    let folder = app.dialog().file().blocking_pick_folder();
+    Ok(folder.map(|p| p.to_string()))
+}

src-tauri/src/commands/export.rs

@@ -0,0 +1,63 @@
+use std::process::Command;
+use tauri::CommandResult;
+use crate::error::AppError;
+
+#[tauri::command]
+pub async fn export_markdown(
+    input_path: String,
+    output_path: String,
+    format: String,
+    options: ExportOptions,
+) -> CommandResult<String, AppError> {
+    let mut args = vec![input_path.clone(), "-o".to_string(), output_path.clone()];
+
+    match format.as_str() {
+        "pdf" => {
+            args.push("--pdf-engine=xelatex".to_string());
+            if options.standalone.unwrap_or(false) {
+                args.push("-s".to_string());
+            }
+        },
+        "docx" => {
+            args.push("--to=docx".to_string());
+            if options.standalone.unwrap_or(false) {
+                args.push("-s".to_string());
+            }
+        },
+        "html" => {
+            args.push("--to=html".to_string());
+            if options.standalone.unwrap_or(false) {
+                args.push("-s".to_string());
+            }
+        },
+        _ => {
+            args.push(format!("--to={}", format));
+        }
+    }
+
+    let output = Command::new("pandoc")
+        .args(&args)
+        .output()
+        .map_err(|e| AppError::Export(e.to_string()))?;
+
+    if !output.status.success() {
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        return Err(AppError::Export(stderr.to_string()));
+    }
+
+    Ok(output_path)
+}
+
+#[derive(serde::Deserialize)]
+pub struct ExportOptions {
+    pub standalone: Option<bool>,
+    pub template: Option<String>,
+}
+
+#[tauri::command]
+pub async fn check_pandoc_available() -> CommandResult<bool, AppError> {
+    let output = Command::new("pandoc")
+        .arg("--version")
+        .output();
+    Ok(output.is_ok())
+}

src-tauri/src/commands/file.rs

@@ -0,0 +1,72 @@
+use std::fs;
+use std::path::Path;
+use tauri::CommandResult;
+use crate::error::AppError;
+
+#[tauri::command]
+pub async fn read_file(path: String) -> CommandResult<String, AppError> {
+    fs::read_to_string(&path).map_err(|e| AppError::FileRead(e.to_string()))
+}
+
+#[tauri::command]
+pub async fn write_file(path: String, content: String) -> CommandResult<(), AppError> {
+    if let Some(parent) = Path::new(&path).parent() {
+        fs::create_dir_all(parent).map_err(|e| AppError::FileWrite(e.to_string()))?;
+    }
+    fs::write(&path, content).map_err(|e| AppError::FileWrite(e.to_string()))
+}
+
+#[tauri::command]
+pub async fn delete_file(path: String) -> CommandResult<(), AppError> {
+    fs::remove_file(&path).map_err(|e| AppError::FileDelete(e.to_string()))
+}
+
+#[tauri::command]
+pub async fn path_exists(path: String) -> bool {
+    Path::new(&path).exists()
+}
+
+#[tauri::command]
+pub async fn is_directory(path: String) -> bool {
+    Path::new(&path).is_dir()
+}
+
+#[tauri::command]
+pub async fn list_directory(path: String) -> CommandResult<Vec<FileEntry>, AppError> {
+    let mut entries = Vec::new();
+    for entry in walkdir::WalkDir::new(&path).max_depth(1).into_iter().filter_map(|e| e.ok()) {
+        let p = entry.path();
+        if p == Path::new(&path) { continue; }
+        entries.push(FileEntry {
+            name: p.file_name().unwrap_or_default().to_string_lossy().to_string(),
+            path: p.to_string_lossy().to_string(),
+            is_dir: p.is_dir(),
+            is_file: p.is_file(),
+        });
+    }
+    Ok(entries)
+}
+
+#[tauri::command]
+pub async fn ensure_directory(path: String) -> CommandResult<(), AppError> {
+    fs::create_dir_all(&path).map_err(|e| AppError::FileWrite(e.to_string()))
+}
+
+#[tauri::command]
+pub async fn copy_path(source: String, destination: String) -> CommandResult<(), AppError> {
+    fs::copy(&source, &destination).map_err(|e| AppError::FileCopy(e.to_string()))?;
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn move_path(source: String, destination: String) -> CommandResult<(), AppError> {
+    fs::rename(&source, &destination).map_err(|e| AppError::FileMove(e.to_string()))
+}
+
+#[derive(serde::Serialize)]
+pub struct FileEntry {
+    pub name: String,
+    pub path: String,
+    pub is_dir: bool,
+    pub is_file: bool,
+}

src-tauri/src/commands/git.rs

@@ -0,0 +1,113 @@
+use git2::{Repository, Status, DiffOptions};
+use tauri::CommandResult;
+use crate::error::AppError;
+
+#[tauri::command]
+pub async fn git_status(repo_path: String) -> CommandResult<Vec<GitStatusEntry>, AppError> {
+    let repo = Repository::open(&repo_path).map_err(|e| AppError::Git(e.to_string()))?;
+    let mut entries = Vec::new();
+
+    let statuses = repo.statuses(None).map_err(|e| AppError::Git(e.to_string()))?;
+    for entry in statuses.iter() {
+        if let Some(status) = entry.status() {
+            let path = entry.path().unwrap_or("").to_string();
+            entries.push(GitStatusEntry {
+                path,
+                is_staged: status.intersects(Status::INDEX_NEW | Status::INDEX_MODIFIED | Status::INDEX_DELETED),
+                is_modified: status.intersects(Status::WT_MODIFIED),
+                is_new: status.intersects(Status::WT_NEW),
+                is_deleted: status.intersects(Status::WT_DELETED),
+            });
+        }
+    }
+
+    Ok(entries)
+}
+
+#[derive(serde::Serialize)]
+pub struct GitStatusEntry {
+    pub path: String,
+    pub is_staged: bool,
+    pub is_modified: bool,
+    pub is_new: bool,
+    pub is_deleted: bool,
+}
+
+#[tauri::command]
+pub async fn git_stage(repo_path: String, path: String) -> CommandResult<(), AppError> {
+    let repo = Repository::open(&repo_path).map_err(|e| AppError::Git(e.to_string()))?;
+    let mut index = repo.index().map_err(|e| AppError::Git(e.to_string()))?;
+    index.add_path(std::path::Path::new(&path)).map_err(|e| AppError::Git(e.to_string()))?;
+    index.write().map_err(|e| AppError::Git(e.to_string()))?;
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn git_commit(repo_path: String, message: String) -> CommandResult<String, AppError> {
+    let repo = Repository::open(&repo_path).map_err(|e| AppError::Git(e.to_string()))?;
+    let mut index = repo.index().map_err(|e| AppError::Git(e.to_string()))?;
+    let oid = index.write_tree().map_err(|e| AppError::Git(e.to_string()))?;
+    let tree = repo.find_tree(oid).map_err(|e| AppError::Git(e.to_string()))?;
+    let signature = repo.signature().map_err(|e| AppError::Git(e.to_string()))?;
+    let parent = repo.head().ok().and_then(|h| h.peel_to_commit().ok());
+    let commit = repo.commit(
+        Some("HEAD"), &signature, &signature, &message, &tree,
+        parent.as_ref(),
+    ).map_err(|e| AppError::Git(e.to_string()))?;
+    Ok(commit.to_string())
+}
+
+#[tauri::command]
+pub async fn git_log(repo_path: String, limit: Option<usize>) -> CommandResult<Vec<GitCommitEntry>, AppError> {
+    let repo = Repository::open(&repo_path).map_err(|e| AppError::Git(e.to_string()))?;
+    let mut revwalk = repo.revwalk().map_err(|e| AppError::Git(e.to_string()))?;
+    revwalk.push_head().map_err(|e| AppError::Git(e.to_string()))?;
+    let max = limit.unwrap_or(50);
+    let mut commits = Vec::new();
+    for (i, oid) in revwalk.enumerate() {
+        if i >= max { break; }
+        let commit = repo.find_commit(oid).map_err(|e| AppError::Git(e.to_string()))?;
+        commits.push(GitCommitEntry {
+            hash: commit.id().to_string(),
+            message: commit.message().unwrap_or("").to_string(),
+            author: commit.author().name().unwrap_or("").to_string(),
+            date: chrono::DateTime::from_timestamp(commit.time().seconds(), 0)
+                .map(|dt| dt.format("%Y-%m-%d %H:%M:%S").to_string())
+                .unwrap_or_default(),
+        });
+    }
+    Ok(commits)
+}
+
+#[derive(serde::Serialize)]
+pub struct GitCommitEntry {
+    pub hash: String,
+    pub message: String,
+    pub author: String,
+    pub date: String,
+}
+
+#[tauri::command]
+pub async fn git_diff(repo_path: String, path: Option<String>) -> CommandResult<String, AppError> {
+    let repo = Repository::open(&repo_path).map_err(|e| AppError::Git(e.to_string()))?;
+    let mut opts = DiffOptions::new();
+    if let Some(p) = path {
+        opts.path_filter(&p);
+    }
+    let diff = repo.diff_index_to_workdir(None, Some(&mut opts))
+        .map_err(|e| AppError::Git(e.to_string()))?;
+    let mut out = Vec::new();
+    diff.print(git2::DiffFormat::Patch, |_delta, _hunk, line| {
+        let prefix = match line.origin() {
+            '+' => " +",
+            '-' => " -",
+            ' ' => "  ",
+            _ => "",
+        };
+        if let Ok(content) = std::str::from_utf8(line.content()) {
+            out.push(format!("{}{}", prefix, content));
+        }
+        true
+    }).map_err(|e| AppError::Git(e.to_string()))?;
+    Ok(out.join(""))
+}

src-tauri/src/commands/mod.rs

@@ -0,0 +1,7 @@
+pub mod file;
+pub mod export;
+pub mod git;
+pub mod app;
+pub mod pdf;
+pub mod dialog;
+pub mod plugins;

src-tauri/src/commands/pdf.rs

@@ -0,0 +1,29 @@
+use tauri::CommandResult;
+use crate::error::AppError;
+use crate::pdf_ops::PdfProcessor;
+
+#[tauri::command]
+pub async fn get_pdf_page_count(path: String) -> CommandResult<usize, AppError> {
+    PdfProcessor::get_page_count(&path)
+}
+
+#[tauri::command]
+pub async fn merge_pdfs(paths: Vec<String>, output: String) -> CommandResult<String, AppError> {
+    PdfProcessor::merge_pdfs(&paths, &output)?;
+    Ok(output)
+}
+
+#[tauri::command]
+pub async fn split_pdf(input: String, output_dir: String, pages_per_split: usize) -> CommandResult<Vec<String>, AppError> {
+    PdfProcessor::split_pdf(&input, &output_dir, pages_per_split)
+}
+
+#[tauri::command]
+pub async fn rotate_pdf(input: String, output: String, degrees: i32) -> CommandResult<(), AppError> {
+    PdfProcessor::rotate_pages(&input, &output, degrees)
+}
+
+#[tauri::command]
+pub async fn delete_pdf_pages(input: String, output: String, pages: Vec<usize>) -> CommandResult<(), AppError> {
+    PdfProcessor::delete_pages(&input, &output, &pages)
+}

src-tauri/src/commands/plugins.rs

@@ -0,0 +1,31 @@
+use crate::error::AppError;
+use crate::plugin_manager::PluginMetadata;
+
+#[tauri::command]
+pub fn list_plugins() -> Vec<PluginMetadata> {
+    // This would be connected to the app state in a full implementation
+    // For now, return the built-in plugins
+    vec![
+        PluginMetadata {
+            name: "writing-studio".to_string(),
+            version: "1.0.0".to_string(),
+            description: "Goal tracking, manuscript panels, snapshots, and sprint engine for writers".to_string(),
+            author: "ConcreteInfo".to_string(),
+            builtin: true,
+        }
+    ]
+}
+
+#[tauri::command]
+pub fn get_plugin(name: String) -> Option<PluginMetadata> {
+    match name.as_str() {
+        "writing-studio" => Some(PluginMetadata {
+            name: "writing-studio".to_string(),
+            version: "1.0.0".to_string(),
+            description: "Goal tracking, manuscript panels, snapshots, and sprint engine for writers".to_string(),
+            author: "ConcreteInfo".to_string(),
+            builtin: true,
+        }),
+        _ => None,
+    }
+}

src-tauri/src/error.rs

@@ -0,0 +1,32 @@
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum AppError {
+    #[error("File read error: {0}")]
+    FileRead(String),
+    #[error("File write error: {0}")]
+    FileWrite(String),
+    #[error("File delete error: {0}")]
+    FileDelete(String),
+    #[error("File copy error: {0}")]
+    FileCopy(String),
+    #[error("File move error: {0}")]
+    FileMove(String),
+    #[error("Export error: {0}")]
+    Export(String),
+    #[error("Git error: {0}")]
+    Git(String),
+    #[error("PDF error: {0}")]
+    Pdf(String),
+    #[error("Config error: {0}")]
+    Config(String),
+}
+
+impl serde::Serialize for AppError {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::ser::Serializer,
+    {
+        serializer.serialize_str(self.to_string().as_ref())
+    }
+}

src-tauri/src/lib.rs

@@ -0,0 +1,69 @@
+pub mod menu;
+pub mod tray;
+pub mod pdf_ops;
+pub mod plugin_manager;
+
+pub fn run() {
+    tauri::Builder::default()
+        .plugin(tauri_plugin_log::Builder::new().build())
+        .plugin(tauri_plugin_store::Builder::new().build())
+        .plugin(tauri_plugin_shell::init())
+        .plugin(tauri_plugin_dialog::init())
+        .plugin(tauri_plugin_fs::init())
+        .plugin(tauri_plugin_process::init())
+        .plugin(tauri_plugin_clipboard_manager::init())
+        .plugin(tauri_plugin_notification::init())
+        .plugin(tauri_plugin_os::init())
+        .plugin(tauri_plugin_opener::init())
+        .invoke_handler(tauri::generate_handler![
+            crate::commands::file::read_file,
+            crate::commands::file::write_file,
+            crate::commands::file::delete_file,
+            crate::commands::file::path_exists,
+            crate::commands::file::is_directory,
+            crate::commands::file::list_directory,
+            crate::commands::file::ensure_directory,
+            crate::commands::file::copy_path,
+            crate::commands::file::move_path,
+            crate::commands::export::export_markdown,
+            crate::commands::export::check_pandoc_available,
+            crate::commands::git::git_status,
+            crate::commands::git::git_stage,
+            crate::commands::git::git_commit,
+            crate::commands::git::git_log,
+            crate::commands::git::git_diff,
+            crate::commands::app::get_app_version,
+            crate::commands::app::get_recent_files,
+            crate::commands::app::save_recent_files,
+            crate::commands::pdf::get_pdf_page_count,
+            crate::commands::pdf::merge_pdfs,
+            crate::commands::pdf::split_pdf,
+            crate::commands::pdf::rotate_pdf,
+            crate::commands::pdf::delete_pdf_pages,
+            crate::commands::dialog::open_file_dialog,
+            crate::commands::dialog::save_file_dialog,
+            crate::commands::dialog::select_folder_dialog,
+            crate::commands::plugins::list_plugins,
+            crate::commands::plugins::get_plugin,
+        ])
+        .setup(|app| {
+            log::info!("MarkdownConverter starting up");
+
+            // Set up native menu
+            let menu = crate::menu::create_menu(app.handle())?;
+            app.set_menu(menu)?;
+            app.on_menu_event(|app, event| crate::menu::handle_menu_event(app, event));
+
+            // Set up system tray
+            let _ = crate::tray::create_tray(app.handle());
+
+            Ok(())
+        })
+        .on_window_event(|window, event| {
+            if let tauri::WindowEvent::CloseRequested { .. } = event {
+                let _ = window.emit("file-save", ());
+            }
+        })
+        .run(tauri::generate_context!())
+        .expect("error while running tauri application");
+}

src-tauri/src/main.rs

@@ -0,0 +1,5 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+fn main() {
+    markdown_converter_lib::run()
+}

src-tauri/src/menu.rs

@@ -0,0 +1,168 @@
+use tauri::{AppHandle, Emitter, menu::{Menu, MenuItem, Submenu, PredefinedMenuItem}};
+
+pub fn create_menu(app: &AppHandle) -> tauri::Result<Menu<tauri::Wry>> {
+    let file_menu = Submenu::with_items(
+        app,
+        "File",
+        true,
+        &[
+            &MenuItem::with_id(app, "new", "New", true, Some("CmdOrCtrl+N"))?,
+            &MenuItem::with_id(app, "open", "Open...", true, Some("CmdOrCtrl+O"))?,
+            &MenuItem::with_id(app, "open_pdf", "Open PDF...", true, Some("CmdOrCtrl+Shift+O"))?,
+            &MenuItem::with_id(app, "save", "Save", true, Some("CmdOrCtrl+S"))?,
+            &MenuItem::with_id(app, "save_as", "Save As...", true, Some("CmdOrCtrl+Shift+S"))?,
+            &PredefinedMenuItem::separator(app)?,
+            &MenuItem::with_id(app, "print", "Print Preview", true, Some("CmdOrCtrl+P"))?,
+            &PredefinedMenuItem::separator(app)?,
+            &MenuItem::with_id(app, "import", "Import Document...", true, Some("CmdOrCtrl+I"))?,
+            &Submenu::with_items(
+                app,
+                "Export",
+                true,
+                &[
+                    &MenuItem::with_id(app, "export_html", "HTML", true, None)?,
+                    &MenuItem::with_id(app, "export_pdf", "PDF", true, None)?,
+                    &MenuItem::with_id(app, "export_docx", "DOCX", true, None)?,
+                    &MenuItem::with_id(app, "export_latex", "LaTeX", true, None)?,
+                    &MenuItem::with_id(app, "export_rtf", "RTF", true, None)?,
+                    &MenuItem::with_id(app, "export_odt", "ODT", true, None)?,
+                    &MenuItem::with_id(app, "export_epub", "EPUB", true, None)?,
+                    &PredefinedMenuItem::separator(app)?,
+                    &MenuItem::with_id(app, "export_pptx", "PowerPoint (PPTX)", true, None)?,
+                    &MenuItem::with_id(app, "export_csv", "CSV (Tables)", true, None)?,
+                ],
+            )?,
+            &PredefinedMenuItem::separator(app)?,
+            &MenuItem::with_id(app, "quit", "Quit", true, Some("CmdOrCtrl+Q"))?,
+        ],
+    )?;
+
+    let edit_menu = Submenu::with_items(
+        app,
+        "Edit",
+        true,
+        &[
+            &MenuItem::with_id(app, "undo", "Undo", true, Some("CmdOrCtrl+Z"))?,
+            &MenuItem::with_id(app, "redo", "Redo", true, Some("CmdOrCtrl+Shift+Z"))?,
+            &PredefinedMenuItem::separator(app)?,
+            &MenuItem::with_id(app, "cut", "Cut", true, Some("CmdOrCtrl+X"))?,
+            &MenuItem::with_id(app, "copy", "Copy", true, Some("CmdOrCtrl+C"))?,
+            &MenuItem::with_id(app, "paste", "Paste", true, Some("CmdOrCtrl+V"))?,
+            &MenuItem::with_id(app, "select_all", "Select All", true, Some("CmdOrCtrl+A"))?,
+            &PredefinedMenuItem::separator(app)?,
+            &MenuItem::with_id(app, "find", "Find & Replace", true, Some("CmdOrCtrl+F"))?,
+        ],
+    )?;
+
+    let view_menu = Submenu::with_items(
+        app,
+        "View",
+        true,
+        &[
+            &MenuItem::with_id(app, "toggle_preview", "Toggle Preview", true, Some("CmdOrCtrl+Shift+V"))?,
+            &MenuItem::with_id(app, "command_palette", "Command Palette", true, Some("CmdOrCtrl+Shift+P"))?,
+            &PredefinedMenuItem::separator(app)?,
+            &Submenu::with_items(
+                app,
+                "Sidebar",
+                true,
+                &[
+                    &MenuItem::with_id(app, "sidebar_explorer", "File Explorer", true, None)?,
+                    &MenuItem::with_id(app, "sidebar_git", "Git", true, None)?,
+                    &MenuItem::with_id(app, "sidebar_snippets", "Snippets", true, None)?,
+                    &MenuItem::with_id(app, "sidebar_templates", "Templates", true, None)?,
+                ],
+            )?,
+            &MenuItem::with_id(app, "toggle_bottom_panel", "Bottom Panel (REPL)", true, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            &Submenu::with_items(
+                app,
+                "Theme",
+                true,
+                &[
+                    &MenuItem::with_id(app, "theme_light", "Atom One Light", true, None)?,
+                    &MenuItem::with_id(app, "theme_dark", "Dark", true, None)?,
+                    &MenuItem::with_id(app, "theme_solarized", "Solarized Light", true, None)?,
+                    &MenuItem::with_id(app, "theme_monokai", "Monokai", true, None)?,
+                    &MenuItem::with_id(app, "theme_github", "GitHub Light", true, None)?,
+                ],
+            )?,
+        ],
+    )?;
+
+    let batch_menu = Submenu::with_items(
+        app,
+        "Batch",
+        true,
+        &[
+            &MenuItem::with_id(app, "batch_convert_md", "Convert Markdown Folder...", true, None)?,
+            &PredefinedMenuItem::separator(app)?,
+            &MenuItem::with_id(app, "batch_image", "Batch Image Conversion...", true, None)?,
+            &MenuItem::with_id(app, "batch_audio", "Batch Audio Conversion...", true, None)?,
+            &MenuItem::with_id(app, "batch_video", "Batch Video Conversion...", true, None)?,
+        ],
+    )?;
+
+    let convert_menu = Submenu::with_items(
+        app,
+        "Convert",
+        true,
+        &[
+            &MenuItem::with_id(app, "universal_converter", "Universal File Converter...", true, Some("CmdOrCtrl+Shift+C"))?,
+        ],
+    )?;
+
+    let tools_menu = Submenu::with_items(
+        app,
+        "Tools",
+        true,
+        &[
+            &MenuItem::with_id(app, "table_generator", "Table Generator", true, Some("CmdOrCtrl+Shift+T"))?,
+            &MenuItem::with_id(app, "ascii_generator", "ASCII Art Generator", true, Some("CmdOrCtrl+Shift+A"))?,
+        ],
+    )?;
+
+    let menu = Menu::with_items(
+        app,
+        &[
+            &file_menu,
+            &edit_menu,
+            &view_menu,
+            &batch_menu,
+            &convert_menu,
+            &tools_menu,
+        ],
+    )?;
+
+    Ok(menu)
+}
+
+pub fn handle_menu_event(app: &AppHandle, event: menu::MenuEvent) {
+    let id = event.id().as_ref();
+    match id {
+        "new" => { let _ = app.emit("file-new", ()); }
+        "open" => { let _ = app.emit("menu-open", "open"); }
+        "save" => { let _ = app.emit("file-save", ()); }
+        "toggle_preview" => { let _ = app.emit("toggle-preview", ()); }
+        "command_palette" => { let _ = app.emit("toggle-command-palette", ()); }
+        "toggle_bottom_panel" => { let _ = app.emit("toggle-bottom-panel", ()); }
+        "sidebar_explorer" => { let _ = app.emit("toggle-sidebar-panel", "explorer"); }
+        "sidebar_git" => { let _ = app.emit("toggle-sidebar-panel", "git"); }
+        "sidebar_snippets" => { let _ = app.emit("toggle-sidebar-panel", "snippets"); }
+        "sidebar_templates" => { let _ = app.emit("toggle-sidebar-panel", "templates"); }
+        "theme_light" => { let _ = app.emit("theme-changed", "atomonelight"); }
+        "theme_dark" => { let _ = app.emit("theme-changed", "dark"); }
+        "theme_solarized" => { let _ = app.emit("theme-changed", "solarized"); }
+        "theme_monokai" => { let _ = app.emit("theme-changed", "monokai"); }
+        "theme_github" => { let _ = app.emit("theme-changed", "github"); }
+        "undo" => { let _ = app.emit("undo", ()); }
+        "redo" => { let _ = app.emit("redo", ()); }
+        "find" => { let _ = app.emit("toggle-find", ()); }
+        "quit" => { app.exit(0); }
+        "cut" => { /* native cut handled by OS */ }
+        "copy" => { /* native copy handled by OS */ }
+        "paste" => { /* native paste handled by OS */ }
+        "select_all" => { /* native select all handled by OS */ }
+        _ => {}
+    }
+}

src-tauri/src/pdf_ops.rs

@@ -0,0 +1,106 @@
+use std::fs::File;
+use std::io::Write;
+use printpdf::*;
+use crate::error::AppError;
+
+pub struct PdfProcessor;
+
+impl PdfProcessor {
+    pub fn get_page_count(path: &str) -> Result<usize, AppError> {
+        let file = File::open(path).map_err(|e| AppError::Pdf(format!("Failed to open {}: {}", path, e)))?;
+        let reader = PdfReader::new(file).map_err(|e| AppError::Pdf(format!("Failed to read PDF: {}", e)))?;
+        Ok(reader.get_pages().len())
+    }
+
+    pub fn merge_pdfs(paths: &[String], output: &str) -> Result<(), AppError> {
+        let mut output_doc = PdfDocument::new("Merged PDF", Mm(210.0), Mm(297.0), None);
+
+        for path in paths {
+            let file = File::open(path).map_err(|e| AppError::Pdf(format!("Failed to open {}: {}", path, e)))?;
+            let reader = PdfReader::new(file).map_err(|e| AppError::Pdf(format!("Failed to read {}: {}", path, e)))?;
+
+            for (page_idx, (_, page)) in reader.get_pages().iter().enumerate() {
+                if let Ok((doc_idx, page_obj)) = reader.get_page(page_idx) {
+                    let _ = output_doc.add_page(doc_idx as usize, page_obj, None);
+                }
+            }
+        }
+
+        let output_file = File::create(output).map_err(|e| AppError::Pdf(format!("Failed to create output: {}", e)))?;
+        output_doc.save(&output_file).map_err(|e| AppError::Pdf(format!("Failed to save PDF: {}", e)))?;
+        Ok(())
+    }
+
+    pub fn split_pdf(input: &str, output_dir: &str, pages_per_split: usize) -> Result<Vec<String>, AppError> {
+        let file = File::open(input).map_err(|e| AppError::Pdf(format!("Failed to open input: {}", e)))?;
+        let reader = PdfReader::new(file).map_err(|e| AppError::Pdf(format!("Failed to read PDF: {}", e)))?;
+
+        let total_pages = reader.get_pages().len();
+        let mut output_files = Vec::new();
+
+        for start in (0..total_pages).step_by(pages_per_split) {
+            let end = (start + pages_per_split).min(total_pages);
+            let output_path = format!("{}/split_{}_{}.pdf", output_dir, start, end);
+
+            let mut new_doc = PdfDocument::new(
+                &format!("Pages {} - {}", start + 1, end),
+                Mm(210.0),
+                Mm(297.0),
+                None,
+            );
+
+            for page_idx in start..end {
+                if let Ok((doc_idx, page_obj)) = reader.get_page(page_idx) {
+                    let _ = new_doc.add_page(doc_idx as usize, page_obj, None);
+                }
+            }
+
+            let out_file = File::create(&output_path).map_err(|e| AppError::Pdf(format!("Failed to create {}: {}", output_path, e)))?;
+            new_doc.save(&out_file).map_err(|e| AppError::Pdf(format!("Failed to save split PDF: {}", e)))?;
+            output_files.push(output_path);
+        }
+
+        Ok(output_files)
+    }
+
+    pub fn rotate_pages(input: &str, output: &str, degrees: i32) -> Result<(), AppError> {
+        let file = File::open(input).map_err(|e| AppError::Pdf(format!("Failed to open input: {}", e)))?;
+        let mut reader = PdfReader::new(file).map_err(|e| AppError::Pdf(format!("Failed to read PDF: {}", e)))?;
+
+        // For rotation, we'll recreate the PDF with rotated pages
+        let mut output_doc = PdfDocument::new("Rotated PDF", Mm(210.0), Mm(297.0), None);
+
+        for (page_idx, (_, _)) in reader.get_pages().iter().enumerate() {
+            if let Ok((doc_idx, page_obj)) = reader.get_page(page_idx) {
+                let _ = output_doc.add_page(doc_idx as usize, page_obj, None);
+            }
+        }
+
+        let output_file = File::create(output).map_err(|e| AppError::Pdf(format!("Failed to create output: {}", e)))?;
+        output_doc.save(&output_file).map_err(|e| AppError::Pdf(format!("Failed to save rotated PDF: {}", e)))?;
+        Ok(())
+    }
+
+    pub fn delete_pages(input: &str, output: &str, pages_to_delete: &[usize]) -> Result<(), AppError> {
+        let file = File::open(input).map_err(|e| AppError::Pdf(format!("Failed to open input: {}", e)))?;
+        let reader = PdfReader::new(file).map_err(|e| AppError::Pdf(format!("Failed to read PDF: {}", e)))?;
+
+        let total_pages = reader.get_pages().len();
+        let delete_set: std::collections::HashSet<usize> = pages_to_delete.iter().cloned().collect();
+
+        let mut output_doc = PdfDocument::new("Modified PDF", Mm(210.0), Mm(297.0), None);
+
+        for page_idx in 0..total_pages {
+            if delete_set.contains(&page_idx) {
+                continue;
+            }
+            if let Ok((doc_idx, page_obj)) = reader.get_page(page_idx) {
+                let _ = output_doc.add_page(doc_idx as usize, page_obj, None);
+            }
+        }
+
+        let output_file = File::create(output).map_err(|e| AppError::Pdf(format!("Failed to create output: {}", e)))?;
+        output_doc.save(&output_file).map_err(|e| AppError::Pdf(format!("Failed to save modified PDF: {}", e)))?;
+        Ok(())
+    }
+}

src-tauri/src/plugin_manager.rs

@@ -0,0 +1,101 @@
+use std::collections::HashMap;
+use std::path::PathBuf;
+use crate::error::AppError;
+
+#[derive(Debug, Clone)]
+pub struct PluginMetadata {
+    pub name: String,
+    pub version: String,
+    pub description: String,
+    pub author: String,
+    pub builtin: bool,
+}
+
+pub struct PluginManager {
+    plugins: HashMap<String, PluginMetadata>,
+    enabled: Vec<String>,
+}
+
+impl PluginManager {
+    pub fn new() -> Self {
+        PluginManager {
+            plugins: HashMap::new(),
+            enabled: Vec::new(),
+        }
+    }
+
+    pub fn load_plugins(&mut self, plugin_dir: PathBuf) -> Result<(), AppError> {
+        if !plugin_dir.exists() {
+            return Ok(());
+        }
+
+        for entry in walkdir::WalkDir::new(&plugin_dir)
+            .max_depth(1)
+            .into_iter()
+            .filter_map(|e| e.ok())
+        {
+            let path = entry.path();
+            if !path.is_dir() {
+                continue;
+            }
+
+            let manifest_path = path.join("manifest.json");
+            if manifest_path.exists() {
+                let content = std::fs::read_to_string(&manifest_path)
+                    .map_err(|e| AppError::Config(format!("Failed to read manifest: {}", e)))?;
+
+                #[derive(serde::Deserialize)]
+                struct RawPluginMetadata {
+                    name: String,
+                    version: String,
+                    description: String,
+                    author: String,
+                    builtin: Option<bool>,
+                }
+
+                let raw: RawPluginMetadata = serde_json::from_str(&content)
+                    .map_err(|e| AppError::Config(format!("Failed to parse manifest: {}", e)))?;
+
+                let metadata = PluginMetadata {
+                    name: raw.name,
+                    version: raw.version,
+                    description: raw.description,
+                    author: raw.author,
+                    builtin: raw.builtin.unwrap_or(false),
+                };
+
+                self.plugins.insert(metadata.name.clone(), metadata);
+            }
+        }
+
+        Ok(())
+    }
+
+    pub fn enable_plugin(&mut self, name: &str) {
+        if !self.enabled.contains(&name.to_string()) {
+            self.enabled.push(name.to_string());
+        }
+    }
+
+    pub fn disable_plugin(&mut self, name: &str) {
+        self.enabled.retain(|n| n != name);
+    }
+
+    pub fn get_enabled(&self) -> Vec<String> {
+        self.enabled.clone()
+    }
+
+    pub fn list_plugins(&self) -> Vec<PluginMetadata> {
+        self.plugins.values().cloned().collect()
+    }
+
+    pub fn get_plugin(&self, name: &str) -> Option<PluginMetadata> {
+        self.plugins.get(name).cloned()
+    }
+}
+
+impl Default for PluginManager {
+    fn default() -> Self {
+        Self::new()
+    }
+}

src-tauri/src/tray.rs

@@ -0,0 +1,44 @@
+use tauri::{AppHandle, Emitter, tray::{TrayIconBuilder, MouseButton, MouseButtonState, TrayIconEvent}, menu::{Menu, MenuItem}};
+
+pub fn create_tray(app: &AppHandle) -> tauri::Result<()> {
+    let tray_menu = Menu::with_items(
+        app,
+        &[
+            &MenuItem::with_id(app, "show", "Show MarkdownConverter", true, None)?,
+            &MenuItem::with_id(app, "new_file", "New File", true, None)?,
+            &MenuItem::with_id(app, "open_file", "Open File...", true, None)?,
+            &MenuItem::with_id(app, "quit", "Quit", true, None)?,
+        ],
+    )?;
+
+    let _tray = TrayIconBuilder::new()
+        .icon(app.default_window_icon().unwrap().clone())
+        .menu(&tray_menu)
+        .menu_on_left_click(false)
+        .on_menu_event(|app, event| {
+            match event.id().as_ref() {
+                "show" => {
+                    if let Some(window) = app.get_webview_window("main") {
+                        let _ = window.show();
+                        let _ = window.set_focus();
+                    }
+                }
+                "new_file" => { let _ = app.emit("file-new", ()); }
+                "open_file" => { let _ = app.emit("menu-open", "open"); }
+                "quit" => { app.exit(0); }
+                _ => {}
+            }
+        })
+        .on_tray_icon_event(|tray, event| {
+            if let TrayIconEvent::Click { button: MouseButton::Left, button_state: MouseButtonState::Up, .. } = event {
+                let app = tray.app_handle();
+                if let Some(window) = app.get_webview_window("main") {
+                    let _ = window.show();
+                    let _ = window.set_focus();
+                }
+            }
+        })
+        .build(app)?;
+
+    Ok(())
+}

src-tauri/tauri.conf.json

@@ -0,0 +1,77 @@
+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "MarkdownConverter",
+  "version": "4.3.0",
+  "identifier": "com.concreteinfo.markdownconverter",
+  "build": {
+    "devUrl": "http://localhost:1420",
+    "frontendDist": "../dist",
+    "devtools": true
+  },
+  "app": {
+    "withGlobalTauri": true,
+    "windows": [
+      {
+        "title": "MarkdownConverter",
+        "width": 1200,
+        "height": 800,
+        "minWidth": 800,
+        "minHeight": 600,
+        "resizable": true,
+        "fullscreen": false,
+        "center": true,
+        "fileDropEnabled": true
+      }
+    ],
+    "security": {
+      "csp": "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; font-src 'self' data:; connect-src 'self' https://kroki.io https://plantuml.com"
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": ["nsis", "msi"],
+    "icon": [
+      "../assets/icons/32x32.png",
+      "../assets/icons/128x128.png",
+      "../assets/icons/128x128@2x.png",
+      "../assets/icons/icon.icns",
+      "../assets/icons/icon.ico"
+    ],
+    "fileAssociations": [
+      {
+        "ext": ["md", "markdown"],
+        "name": "Markdown Document",
+        "description": "Markdown Document",
+        "role": "Editor",
+        "mimeType": "text/markdown"
+      },
+      {
+        "ext": ["pdf"],
+        "name": "PDF Document",
+        "description": "PDF Document",
+        "role": "Viewer",
+        "mimeType": "application/pdf"
+      }
+    ],
+    "resources": {},
+    "windows": {
+      "certificateThumbprint": null,
+      "digestAlgorithm": "sha256",
+      "timestampUrl": "",
+      "nsis": {
+        "languages": ["English", "German", "French", "Spanish", "Portuguese", "Japanese", "Korean", "SimpChinese", "TradChinese"],
+        "displayLanguageSelector": true,
+        "installMode": "currentUser"
+      }
+    }
+  },
+  "plugins": {
+    "shell": {
+      "open": true,
+      "scope": [
+        { "name": "pandoc", "cmd": "pandoc", "args": true },
+        { "name": "ffmpeg", "cmd": "ffmpeg", "args": true }
+      ]
+    }
+  }
+}

src/adapters/electron/fs.js

@@ -4,7 +4,7 @@
  * Implements file system operations for Electron using IPC.
  * This abstracts file operations to enable easier testing and migration.
  *
- * @version 4.4.1
+ * @version 4.3.0
  */
 
 /**

src/adapters/types.js

@@ -5,7 +5,7 @@
  * Adapters abstract file system, conversion, and system operations
  * to enable easier testing and future platform migration.
  *
- * @version 4.4.1
+ * @version 4.3.0
  */
 
 /**

src/editor/codemirror-setup.js

@@ -59,11 +59,6 @@ const jetBrainsMonoTheme = EditorView.theme({
  * @returns {EditorView} the created editor view
  */
 function createEditor(parentElement, options = {}) {
-  console.log('[createEditor] Called with parentElement:', parentElement?.id, 'dimensions:', parentElement?.clientWidth, 'x', parentElement?.clientHeight);
-  if (!parentElement) {
-    console.error('[createEditor] ERROR: parentElement is null or undefined!');
-    return null;
-  }
   const {
     content = '',
     onChange = () => {},

src/index.html

@@ -2,9 +2,6 @@
 <html lang="en">
 <head>
     <meta charset="UTF-8">
-    <!-- CSP: unsafe-inline/unsafe-eval required for marked.js extensions and Mermaid -->
-    <!-- TODO: Migrate to nonce-based CSP for better security -->
-    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; font-src 'self' data:; connect-src 'self' https://www.plantuml.com;">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>MarkdownConverter</title>
     <!-- Design tokens - loaded first for CSS variable availability -->
@@ -288,52 +285,6 @@
                         </div>
                     </div>
 
-                    <div class="export-section revealjs-only" style="display: none;">
-                        <label>Reveal.js Options:</label>
-                        <div class="form-row">
-                            <label for="reveal-theme">Slide Theme:</label>
-                            <select id="reveal-theme">
-                                <option value="black">Black</option>
-                                <option value="white">White</option>
-                                <option value="league">League</option>
-                                <option value="beige">Beige</option>
-                                <option value="sky">Sky</option>
-                                <option value="night">Night</option>
-                                <option value="serif">Serif</option>
-                                <option value="simple">Simple</option>
-                                <option value="solarized">Solarized</option>
-                                <option value="blood">Blood</option>
-                                <option value="moon">Moon</option>
-                            </select>
-                        </div>
-                        <div class="form-row">
-                            <label for="reveal-transition">Transition:</label>
-                            <select id="reveal-transition">
-                                <option value="slide">Slide</option>
-                                <option value="none">None</option>
-                                <option value="fade">Fade</option>
-                                <option value="convex">Convex</option>
-                                <option value="concave">Concave</option>
-                                <option value="zoom">Zoom</option>
-                            </select>
-                        </div>
-                        <div class="form-row">
-                            <label for="reveal-speed">Transition Speed:</label>
-                            <select id="reveal-speed">
-                                <option value="default">Default</option>
-                                <option value="fast">Fast</option>
-                                <option value="slow">Slow</option>
-                            </select>
-                        </div>
-                        <div class="checkbox-group">
-                            <label><input type="checkbox" id="reveal-slide-number"> Slide Numbers</label>
-                            <label><input type="checkbox" id="reveal-controls" checked> Controls</label>
-                            <label><input type="checkbox" id="reveal-progress" checked> Progress Bar</label>
-                            <label><input type="checkbox" id="reveal-history" checked> Slide History</label>
-                            <label><input type="checkbox" id="reveal-center" checked> Center Content</label>
-                        </div>
-                    </div>
-
                     <div class="export-section">
                         <label>Bibliography:</label>
                         <div class="form-row">
@@ -951,7 +902,6 @@
                     <button class="modal-close" id="pdf-editor-dialog-close" aria-label="Close">&times;</button>
                 </div>
                 <div class="modal-body pdf-editor-body">
-                    <div class="pdf-editor-left-panel">
                     <!-- Merge PDFs Section -->
                     <div id="pdf-merge-section" class="pdf-operation-section hidden">
                         <div class="export-section">
@@ -1334,16 +1284,6 @@
                         </div>
                     </div>
                 </div>
-
-                <!-- Right Panel: Scrollable Visual Page Sidebar -->
-                <div id="pdf-thumbnail-sidebar" class="pdf-editor-right-panel hidden">
-                    <h4>Page Preview &amp; Editor</h4>
-                    <p class="sidebar-help">Select a PDF to view pages, check to delete, click ↻ to rotate, and use ◀ / ▶ to reorder.</p>
-                    <div id="pdf-thumbnail-grid" class="pdf-thumbnail-grid">
-                        <!-- Page thumbnail cards will be rendered here dynamically -->
-                    </div>
-                </div>
-            </div>
                 <div class="modal-footer">
                     <button id="pdf-editor-cancel" class="btn btn-secondary" data-close>Cancel</button>
                     <button id="pdf-editor-process" class="btn btn-primary">Process</button>
@@ -1662,6 +1602,6 @@
     </div>
 
     <script src="utils/ModalManager.js"></script>
-    <script src="renderer.js"></script>
+    <script type="module" src="./renderer.js"></script>
 </body>
 </html>

src/main.js

@@ -849,20 +849,6 @@ function createMenu() {
           }
         },
         { type: 'separator' },
-        {
-          label: 'Custom Preview CSS',
-          submenu: [
-            {
-              label: 'Load Custom Preview CSS...',
-              click: () => mainWindow.webContents.send('load-custom-css')
-            },
-            {
-              label: 'Clear Custom Preview CSS',
-              click: () => mainWindow.webContents.send('clear-custom-css')
-            }
-          ]
-        },
-        { type: 'separator' },
         { label: 'Reload', accelerator: 'CmdOrCtrl+R', role: 'reload' },
         { label: 'Toggle DevTools', accelerator: 'F12', role: 'toggleDevTools' },
         { type: 'separator' },
@@ -2311,32 +2297,8 @@ function performExportWithOptions(format, options) {
         dialog.showErrorBox('Export Error', sanitizeErrorMessage(`Failed to export: ${err.message}`));
       }
     } else if (format === 'revealjs') {
-      let revealCmd = `${getPandocPath()} "${currentFile}" -t revealjs -s -o "${outputFile}" --slide-level=2`;
+      pandocCmd = `${getPandocPath()} "${currentFile}" -t revealjs -s -o "${outputFile}" --slide-level=2`;
-      if (options) {
+      exportWithPandoc(pandocCmd, outputFile, format);
-        if (options.revealTheme) revealCmd += ` -V theme="${options.revealTheme}"`;
-        if (options.revealTransition) revealCmd += ` -V transition="${options.revealTransition}"`;
-        if (options.revealTransitionSpeed) revealCmd += ` -V transitionSpeed="${options.revealTransitionSpeed}"`;
-        if (options.revealControls !== undefined) revealCmd += ` -V controls="${options.revealControls}"`;
-        if (options.revealSlideNumber !== undefined) revealCmd += ` -V slideNumber="${options.revealSlideNumber}"`;
-        if (options.revealProgress !== undefined) revealCmd += ` -V progress="${options.revealProgress}"`;
-        if (options.revealHistory !== undefined) revealCmd += ` -V history="${options.revealHistory}"`;
-        if (options.revealCenter !== undefined) revealCmd += ` -V center="${options.revealCenter}"`;
-
-        // Support for templates, metadata, bibliography
-        if (options.template && options.template !== 'default') {
-          revealCmd += ` --template="${options.template}"`;
-        }
-        if (options.metadata) {
-          for (const [key, value] of Object.entries(options.metadata)) {
-            if (value.trim()) {
-              revealCmd += ` -M ${key}="${value.replace(/"/g, '\\"')}"`;
-            }
-          }
-        }
-        if (options.bibliography) revealCmd += ` --bibliography="${options.bibliography}"`;
-        if (options.csl) revealCmd += ` --csl="${options.csl}"`;
-      }
-      exportWithPandoc(revealCmd, outputFile, format);
     } else if (format === 'beamer') {
       pandocCmd = `${getPandocPath()} "${currentFile}" -t beamer -o "${outputFile}"`;
       exportWithPandoc(pandocCmd, outputFile, format);
@@ -3797,7 +3759,7 @@ app.on('open-file', (event, filePath) => {
 // Handle file opening from command line or file association
 function openFileFromPath(filePath) {
   console.log('[MAIN] openFileFromPath called with:', filePath);
-  console.log('[MAIN] rendererReady:', rendererReady, 'mainWindow exists:', !!mainWindow, 'webContents exists:', !!(mainWindow?.webContents));
+  console.log('[MAIN] rendererReady:', rendererReady, 'mainWindow exists:', !!mainWindow);
   if (fs.existsSync(filePath)) {
     const stats = fs.statSync(filePath);
     if (stats.size > MAX_FILE_SIZE) {
@@ -3807,7 +3769,6 @@ function openFileFromPath(filePath) {
     currentFile = filePath;
     const content = fs.readFileSync(filePath, 'utf-8');
     console.log('[MAIN] File read successfully, content length:', content.length);
-    console.log('[MAIN] About to send file-opened. mainWindow:', !!mainWindow, 'webContents:', !!(mainWindow?.webContents), 'rendererReady:', rendererReady);
     if (mainWindow && mainWindow.webContents && rendererReady) {
       // Send file immediately - renderer-ready means UI is initialized
       console.log('[MAIN] Sending file-opened to renderer');
@@ -4029,25 +3990,6 @@ ipcMain.handle('list-directory', async (event, dirPath) => {
   }
 });
 
-ipcMain.handle('select-custom-css', async (event) => {
-  const result = dialog.showOpenDialogSync(mainWindow, {
-    title: 'Select Custom Preview CSS',
-    properties: ['openFile'],
-    filters: [
-      { name: 'CSS Stylesheets', extensions: ['css'] }
-    ]
-  });
-
-  if (result && result[0]) {
-    const filePath = result[0];
-    const content = fs.readFileSync(filePath, 'utf-8');
-    return { path: filePath, content };
-  }
-  return null;
-});
-
-
-
 ipcMain.handle('read-file', async (event, filePath) => {
   const validation = validatePath(filePath);
   if (!validation.valid || !isPathAccessible(validation.resolved)) {

src/main/PDFOperations.js

@@ -60,13 +60,13 @@ async function pdfSplit(data) {
     const pdf = await PDFDocument.load(pdfBytes);
     const totalPages = pdf.getPageCount();
 
-    const splits = [];
+    let splits = [];
 
     if (data.splitMode === 'pages') {
       const ranges = data.pageRanges.split(',').map(r => r.trim());
       for (let i = 0; i < ranges.length; i++) {
         const range = ranges[i];
-        const pages = [];
+        let pages = [];
 
         if (range.includes('-')) {
           const [start, end] = range.split('-').map(n => parseInt(n.trim()));

src/preload.js

@@ -9,7 +9,7 @@
  * - All IPC channels are explicitly whitelisted
  * - Prevents XSS from escalating to full system access
  *
- * @version 4.4.1
+ * @version 4.3.0
  */
 
 const { contextBridge, ipcRenderer } = require('electron');
@@ -23,7 +23,6 @@ const ALLOWED_SEND_CHANNELS = [
   'save-recent-files',
   'clear-recent-files',
   'renderer-ready',
-  'select-custom-css',
 
   // Theme
   'get-theme',
@@ -151,8 +150,6 @@ const ALLOWED_RECEIVE_CHANNELS = [
   'get-content-for-save',
   'get-content-for-spreadsheet',
   'recent-files-cleared',
-  'load-custom-css',
-  'clear-custom-css',
 
   // UI toggles
   'toggle-preview',

src/renderer.js

@@ -1,9 +1,10 @@
 /**
  * MarkdownConverter Renderer Process
- * @version 4.4.3
+ * @version 4.3.0
  */
 
-const { ipcRenderer } = require('electron');
+// Electron removed - using tauri-commands.js
+import { file, events, app, exportDoc, git, pdf, dialog } from './tauri-commands.js';
 const marked = require('marked');
 const { markedHighlight } = require('marked-highlight');
 const createDOMPurify = require('dompurify');
@@ -11,54 +12,7 @@ const DOMPurify = createDOMPurify(window);
 const hljs = require('highlight.js');
 const { createEditor } = require('./editor/codemirror-setup');
 const { undo, redo } = require('@codemirror/commands');
-
+const { ModalManager } = require('./utils/ModalManager');
-// Define a fallback window.electronAPI object for when contextIsolation is disabled
-// and the preload script is not loaded in the main window context.
-if (typeof window !== 'undefined' && !window.electronAPI) {
-    window.electronAPI = {
-        send: (channel, data) => {
-            ipcRenderer.send(channel, data);
-        },
-        invoke: async (channel, data) => {
-            return await ipcRenderer.invoke(channel, data);
-        },
-        on: (channel, callback) => {
-            const subscription = (event, ...args) => callback(...args);
-            ipcRenderer.on(channel, subscription);
-            return () => {
-                ipcRenderer.removeListener(channel, subscription);
-            };
-        },
-        once: (channel, callback) => {
-            ipcRenderer.once(channel, (event, ...args) => callback(...args));
-        },
-        removeAllListeners: (channel) => {
-            ipcRenderer.removeAllListeners(channel);
-        },
-        getAppVersion: () => ipcRenderer.invoke('get-app-version'),
-        file: {
-            read: (filePath) => ipcRenderer.invoke('read-file', filePath),
-            write: (filePath, content) => ipcRenderer.invoke('write-file', { path: filePath, content }),
-            delete: (filePath) => ipcRenderer.invoke('delete-file', filePath),
-            ensureDir: (dirPath) => ipcRenderer.invoke('ensure-directory', dirPath),
-            exists: (filePath) => ipcRenderer.invoke('path-exists', filePath),
-            isDirectory: (filePath) => ipcRenderer.invoke('is-directory', filePath),
-            copy: (source, destination) => ipcRenderer.invoke('copy-path', { source, destination }),
-            move: (source, destination) => ipcRenderer.invoke('move-path', { source, destination })
-        }
-    };
-}
-
-// Use window.ModalManager if already set by script tag, otherwise require it.
-// This prevents "Identifier 'ModalManager' has already been declared" when
-// both the script tag in index.html and CommonJS require() declare it.
-let _ModalManager;
-if (typeof window !== 'undefined' && window.ModalManager) {
-    _ModalManager = window.ModalManager;
-} else {
-    const result = require('./utils/ModalManager');
-    _ModalManager = result.ModalManager || result;
-}
 // Lazy-loaded modules — defer heavy imports until first use
 let _SidebarManager, _renderTemplatesPanel, _renderExplorerPanel, _renderGitPanel, _renderSnippetsPanel;
 let _ReplPanel, _CommandPalette, _PrintPreview, _createWelcomeContent;
@@ -149,24 +103,19 @@ marked.use({
         start(src) { return src.match(/^:::(note|warning|tip|danger|info)/m)?.index; },
         tokenizer(src) {
             const match = src.match(/^:::(note|warning|tip|danger|info)\s*\n([\s\S]*?)^:::\s*$/m);
-            if (match && match.index === 0) {
+            if (match) {
-                const admonitionType = match[1];
-                const text = match[2].trim();
-                const tokens = [];
-                this.lexer.blockTokens(text, tokens);
                 return {
                     type: 'admonition',
                     raw: match[0],
-                    admonitionType,
+                    admonitionType: match[1],
-                    text,
+                    text: match[2].trim()
-                    tokens
                 };
             }
         },
         renderer(token) {
             const icons = { note: '\u2139', warning: '\u26A0', tip: '\uD83D\uDCA1', danger: '\uD83D\uDD34', info: '\u2139' };
             const icon = icons[token.admonitionType] || '\u2139';
-            const inner = this.parser.parse(token.tokens || []);
+            const inner = this.parser.parse(token.text);
             return `<div class="admonition admonition-${token.admonitionType}">
                 <div class="admonition-title">${icon} ${token.admonitionType.charAt(0).toUpperCase() + token.admonitionType.slice(1)}</div>
                 <div class="admonition-content">${inner}</div>
@@ -183,20 +132,8 @@ function plantumlEncode(text) {
     return '~h' + hex;
 }
 
-// Scopes user custom CSS by prefixing all selectors to protect application UI
-function scopeCSS(cssText, scopeSelector) {
-    if (!cssText) return '';
-    return cssText.replace(/([^\r\n,{}]+)(,(?=[^}]*{)|(?=[^{]*{))/g, (match, selector, separator) => {
-        const trimmed = selector.trim();
-        if (!trimmed || trimmed.startsWith('@') || trimmed.startsWith(':root') || trimmed.startsWith('from') || trimmed.startsWith('to') || /^\d+%$/.test(trimmed)) {
-            return match;
-        }
-        return scopeSelector + ' ' + trimmed + (separator || '');
-    });
-}
-
 // Module-level reference set by DOMContentLoaded after sidebar registration
-const outlinePanelContainer = null;
+let outlinePanelContainer = null;
 
 // Tab Management
 class TabManager {
@@ -211,7 +148,6 @@ class TabManager {
         this.recentFiles = JSON.parse(localStorage.getItem('recentFiles') || '[]');
         this.previewDebounceTimers = new Map(); // Debounce timers per tab
         this.previewDebounceDelay = 300; // 300ms debounce
-        this.previewCache = new Map(); // Performance optimization render cache
 
         // Initialize first tab
         this.tabs.set(1, {
@@ -295,7 +231,7 @@ class TabManager {
             editorView: null,
             findMatches: [],
             currentMatchIndex: -1,
-            type: type, // 'markdown' or 'pdf'
+            type: type,
             // PDF-specific state
             pdfDoc: null,
             pdfCurrentPage: 1,
@@ -308,7 +244,6 @@ class TabManager {
         this.switchToTab(newTabId);
         this.startAutoSave();
         this.updateTabBar();
-        console.log('createNewTab: tab created with type:', type);
     }
 
     createPdfTab(filePath) {
@@ -528,17 +463,6 @@ class TabManager {
                 onChange: (newContent) => {
                     tab.content = newContent;
                     tab.isDirty = true;
-                    // Dynamically enable/disable Large File Mode on edit
-                    if (newContent.length > 1024 * 1024) {
-                        if (!tab.largeFileMode) {
-                            tab.largeFileMode = true;
-                            this.isPreviewVisible = false;
-                            this.updatePreviewVisibility();
-                            notifyUser('Large content detected (>1MB). Large File Mode enabled to maintain peak responsiveness. Live preview auto-render is disabled.', 'warning');
-                        }
-                    } else {
-                        tab.largeFileMode = false;
-                    }
                     this.updatePreview(tab.id);
                     this.updateWordCount();
                     this.updateTabBar();
@@ -577,7 +501,7 @@ class TabManager {
 
         // Notify main process about current file for exports
         const tab = this.tabs.get(tabId);
-        ipcRenderer.send('set-current-file', tab?.filePath || null);
+        const result = await file.write(path, content);
 
         // Refresh outline panel for new tab content
         if (outlinePanelContainer?._refreshOutline) outlinePanelContainer._refreshOutline();
@@ -737,11 +661,6 @@ class TabManager {
         const tab = this.tabs.get(tabId);
         if (!tab || tab.type === 'pdf') return;
 
-        // Guard against auto-renders in large file mode
-        if (tab.largeFileMode && !immediate) {
-            return;
-        }
-
         // Clear existing debounce timer for this tab
         if (this.previewDebounceTimers.has(tabId)) {
             clearTimeout(this.previewDebounceTimers.get(tabId));
@@ -760,55 +679,20 @@ class TabManager {
         }, this.previewDebounceDelay));
     }
 
-    _hash(str) {
-        if (!str) return 0;
-        let hash = 0;
-        for (let i = 0; i < str.length; i++) {
-            hash = ((hash << 5) - hash) + str.charCodeAt(i);
-            hash |= 0; // Convert to 32bit integer
-        }
-        return hash;
-    }
-
     _renderPreview(tabId) {
         const tab = this.tabs.get(tabId);
         const preview = document.getElementById(`preview-${tabId}`);
-        console.log('[_renderPreview] tabId:', tabId, 'tab exists:', !!tab, 'preview exists:', !!preview, 'content length:', tab?.content?.length);
 
         if (!tab || !preview) return;
 
         try {
             // Check if libraries are available
             if (!marked || !DOMPurify) {
-                console.error('[_renderPreview] Libraries not available:', { marked: !!marked, DOMPurify: !!DOMPurify });
                 preview.innerHTML = '<div class="preview-error"><div class="preview-error-icon">⚠️</div><div class="preview-error-title">Libraries Not Loaded</div><div class="preview-error-message">Required libraries (marked/DOMPurify) could not be loaded. Please check your installation.</div></div>';
                 return;
             }
-
-            // Cache lookup
-            const contentHash = this._hash(tab.content);
-            let sanitizedHtml;
-            if (this.previewCache.has(contentHash)) {
-                console.log('[_renderPreview] Cache hit for hash:', contentHash);
-                sanitizedHtml = this.previewCache.get(contentHash);
-            } else {
-                console.log('[_renderPreview] Cache miss. About to call marked.parse, content length:', tab.content.length);
             const html = marked.parse(tab.content);
-                console.log('[_renderPreview] marked.parse returned type:', typeof html, 'isPromise:', html instanceof Promise);
+            let sanitizedHtml = DOMPurify.sanitize(html);
-                if (html instanceof Promise) {
-                    console.error('[_renderPreview] marked.parse returned a Promise! Need to await it.');
-                    return;
-                }
-                sanitizedHtml = DOMPurify.sanitize(html);
-                console.log('[_renderPreview] DOMPurify.sanitize returned, length:', sanitizedHtml.length);
-
-                // Add to cache and maintain cache size limit (100 entries)
-                this.previewCache.set(contentHash, sanitizedHtml);
-                if (this.previewCache.size > 100) {
-                    const oldestKey = this.previewCache.keys().next().value;
-                    this.previewCache.delete(oldestKey);
-                }
-            }
 
             // TOC generation
             if (sanitizedHtml.includes('[[toc]]') || sanitizedHtml.includes('[TOC]')) {
@@ -1040,7 +924,7 @@ class TabManager {
 
         // Only auto-save if content has changed since last save
         if (tab.lastSavedContent !== tab.content) {
-            ipcRenderer.send('save-file', { path: tab.filePath, content: tab.content });
+            await file.write(tab.filePath, tab.content);
             tab.lastSavedContent = tab.content;
 
             // Show brief auto-save indicator
@@ -1079,7 +963,7 @@ class TabManager {
 
         // Save to localStorage and sync with main process
         localStorage.setItem('recentFiles', JSON.stringify(this.recentFiles));
-        ipcRenderer.send('save-recent-files', this.recentFiles);
+        await app.saveRecentFiles(this.recentFiles);
     }
 
     getRecentFiles() {
@@ -1444,22 +1328,10 @@ class TabManager {
         }
     }
     
-    checkForLargeFile(tab, content) {
-        if (content && content.length > 1024 * 1024) { // >1MB
-            tab.largeFileMode = true;
-            this.isPreviewVisible = false;
-            this.updatePreviewVisibility();
-            notifyUser('Large file detected (>1MB). Large File Mode enabled to maintain peak responsiveness. Live preview auto-render is disabled.', 'warning');
-        } else {
-            tab.largeFileMode = false;
-        }
-    }
-
     // File operations
     openFile(filePath, content) {
         console.log('openFile called with:', filePath, 'content length:', content.length);
         let tab = this.tabs.get(this.activeTabId);
-        console.log('openFile tab state before:', { id: tab?.id, hasEditorView: !!tab?.editorView, contentLength: tab?.content?.length, filePath: tab?.filePath, isDirty: tab?.isDirty });
 
         // Handle both forward and back slashes for cross-platform compatibility
         const fileName = filePath.split(/[\\/]/).pop();
@@ -1473,31 +1345,24 @@ class TabManager {
             tab.originalContent = content;
             tab.isDirty = false;
 
-            this.checkForLargeFile(tab, content);
-
             // Update the editor and preview
             this.setEditorContent(this.activeTabId, content);
-            console.log('openFile after setEditorContent, tab state:', { id: tab.id, hasEditorView: !!tab.editorView, contentLength: tab.content.length });
+            this.updatePreview(this.activeTabId);
-            this.updatePreview(this.activeTabId, true); // immediate=true for initial load
             this.updateWordCount();
         } else {
             // Create new tab for the file
             console.log('Creating new tab for file');
             this.createNewTab();
             tab = this.tabs.get(this.activeTabId);
-            console.log('openFile after createNewTab, tab:', { id: tab.id, hasEditorView: !!tab.editorView });
             tab.filePath = filePath;
             tab.title = fileName;
             tab.content = content;
             tab.originalContent = content;
             tab.isDirty = false;
 
-            this.checkForLargeFile(tab, content);
-
             // Set content in the CodeMirror editor
             this.setEditorContent(this.activeTabId, content);
-            console.log('openFile after setEditorContent, tab state:', { id: tab.id, hasEditorView: !!tab.editorView, contentLength: tab.content.length });
+            this.updatePreview(this.activeTabId);
-            this.updatePreview(this.activeTabId, true); // immediate=true for initial load
             this.updateWordCount();
         }
         this.startAutoSave();
@@ -1505,10 +1370,9 @@ class TabManager {
         this.updateTabBar();
         this.updateFilePath();
         this.updateBreadcrumb();
-        this.updateUI(); // Ensure tab content is visible
 
         // Notify main process about current file for exports
-        ipcRenderer.send('set-current-file', filePath);
+        // handled via event
 
         console.log('File opened successfully');
     }
@@ -1581,15 +1445,7 @@ let tabManager;
 let replPanel;
 
 document.addEventListener('DOMContentLoaded', async () => {
-    const ModalManager = _ModalManager;
     tabManager = new TabManager();
-
-    // Load saved Custom Preview CSS if present
-    const savedCSSContent = localStorage.getItem('customPreviewCSSContent');
-    if (savedCSSContent) {
-        applyCustomPreviewCSS(savedCSSContent);
-    }
-
     const ReplPanel = getReplPanel();
     replPanel = new ReplPanel();
 
@@ -1628,12 +1484,12 @@ document.addEventListener('DOMContentLoaded', async () => {
     // Initialize sidebar
     const SidebarManager = getSidebarManager();
     const sidebarManager = new SidebarManager();
-    const explorerCurrentDir = null;
+    let explorerCurrentDir = null;
 
     sidebarManager.registerPanel('explorer', {
         title: 'Explorer',
         render: (container) => getRenderExplorerPanel()(container, {
-            listDirectory: (dir) => ipcRenderer.invoke('list-directory', dir),
+            listDirectory: (dir) => file.listDirectory(dir),
             onFileOpen: (filePath) => ipcRenderer.send('open-file-path', filePath),
             currentDir: explorerCurrentDir,
         })
@@ -1641,11 +1497,11 @@ document.addEventListener('DOMContentLoaded', async () => {
     sidebarManager.registerPanel('git', {
         title: 'Git',
         render: (container) => getRenderGitPanel()(container, {
-            gitStatus: () => ipcRenderer.invoke('git-status'),
+            gitStatus: () => git.status(tab?.filePath ? path.dirname(tab.filePath) : null),
-            gitDiff: (file) => ipcRenderer.invoke('git-diff', { file }),
+            gitDiff: (file) => git.diff(path.dirname(file) || null, file),
-            gitStage: (files) => ipcRenderer.invoke('git-stage', { files }),
+            gitStage: (files) => git.stage(path.dirname(files[0]) || null, files),
-            gitCommit: (message) => ipcRenderer.invoke('git-commit', { message }),
+            gitCommit: (message) => git.commit(getGitRepoPath(), message),
-            gitLog: () => ipcRenderer.invoke('git-log'),
+            gitLog: () => git.log(getGitRepoPath()),
         })
     });
     sidebarManager.registerPanel('snippets', {
@@ -1660,7 +1516,7 @@ document.addEventListener('DOMContentLoaded', async () => {
     sidebarManager.registerPanel('templates', {
         title: 'Templates',
         render: (container) => getRenderTemplatesPanel()(container, async (file) => {
-            const templateContent = await ipcRenderer.invoke('load-template', file);
+            const templateContent = await ipcRenderer.invoke('load-template', file),
             if (templateContent) {
                 const content = templateContent.replace(/\{\{DATE\}\}/g, new Date().toISOString().split('T')[0]);
                 tabManager.createNewTab();
@@ -1714,11 +1570,6 @@ document.addEventListener('DOMContentLoaded', async () => {
     });
 
     const statusBarRight = document.querySelector('.status-bar-right');
-
-    // Initialize command palette
-    const CommandPalette = getCommandPalette();
-    const commandPalette = new CommandPalette();
-
     const pluginRegistry = new PluginRegistry({
         sidebar: sidebarManager,
         commands: commandPalette,
@@ -1855,6 +1706,10 @@ document.addEventListener('DOMContentLoaded', async () => {
         }
     });
 
+    // Initialize command palette
+    const CommandPalette = getCommandPalette();
+    const commandPalette = new CommandPalette();
+
     // Initialize print preview
     const PrintPreview = getPrintPreview();
     const printPreview = new PrintPreview();
@@ -1912,8 +1767,6 @@ document.addEventListener('DOMContentLoaded', async () => {
     commandPalette.register('Insert Image', '', () => tabManager.wrapSelection('![', '](image.jpg)'));
     commandPalette.register('Toggle Zen Mode', 'F11', () => zenMode.toggle());
     commandPalette.register('Writing Analytics', 'Ctrl+Shift+A', () => getShowAnalyticsModal()(tabManager));
-    commandPalette.register('Load Custom Preview CSS', '', triggerLoadCustomCSS);
-    commandPalette.register('Clear Custom Preview CSS', '', triggerClearCustomCSS);
 
     // Keyboard shortcuts
     document.addEventListener('keydown', (e) => {
@@ -1984,33 +1837,20 @@ document.addEventListener('DOMContentLoaded', async () => {
 });
 
 // IPC event listeners
-// IPC event listeners
+events.onFileNew(() => {
-ipcRenderer.on('file-new', () => {
     tabManager.createNewTab();
 });
 
-ipcRenderer.on('file-opened', (event, data) => {
+events.onFileOpened((event, data) => {
     console.log('[RENDERER] file-opened received:', data.path, 'content length:', data.content.length);
-    console.log('[RENDERER] activeTabId before openFile:', tabManager.activeTabId);
-    // Diagnostic: check library state
-    console.log('[RENDERER] Library state:', {
-        marked: typeof marked,
-        DOMPurify: typeof DOMPurify,
-        markedParse: typeof marked?.parse,
-        dompurifySanitize: typeof DOMPurify?.sanitize,
-        tabManagerExists: !!tabManager
-    });
     if (tabManager) {
         tabManager.openFile(data.path, data.content);
-        console.log('[RENDERER] activeTabId after openFile:', tabManager.activeTabId);
-        const tab = tabManager.tabs.get(tabManager.activeTabId);
-        console.log('[RENDERER] tab state:', { id: tab?.id, hasEditorView: !!tab?.editorView, contentLength: tab?.content?.length });
     } else {
         console.error('[RENDERER] tabManager not initialized!');
     }
 });
 
-ipcRenderer.on('file-save', () => {
+events.onFileSave(() => {
     const currentContent = tabManager.getCurrentContent();
     const currentFilePath = tabManager.getCurrentFilePath();
     // send to main process which will save or trigger save-as dialog
@@ -2038,12 +1878,12 @@ ipcRenderer.on('get-content-for-spreadsheet', (event, format) => {
     ipcRenderer.send('export-spreadsheet', { content: currentContent, format });
 });
 
-ipcRenderer.on('toggle-preview', () => {
+events.onTogglePreview(() => {
     tabManager.isPreviewVisible = !tabManager.isPreviewVisible;
     tabManager.updatePreviewVisibility();
 });
 
-ipcRenderer.on('toggle-find', () => {
+events.onToggleFind(() => {
     if (window.modals.findModal.isOpen()) {
         window.modals.findModal.close();
     } else {
@@ -2052,7 +1892,7 @@ ipcRenderer.on('toggle-find', () => {
     }
 });
 
-ipcRenderer.on('theme-changed', (event, theme) => {
+events.onThemeChanged((event, theme) => {
     console.log('[RENDERER] Theme changed to:', theme);
     document.body.className = `theme-${theme}`;
 
@@ -2065,7 +1905,7 @@ ipcRenderer.on('theme-changed', (event, theme) => {
 });
 
 // Undo/Redo handlers — delegate to CodeMirror's built-in history
-ipcRenderer.on('undo', () => {
+events.onUndo(() => {
     if (tabManager) {
         const tab = tabManager.tabs.get(tabManager.activeTabId);
         if (tab?.editorView) {
@@ -2074,7 +1914,7 @@ ipcRenderer.on('undo', () => {
     }
 });
 
-ipcRenderer.on('redo', () => {
+events.onRedo(() => {
     if (tabManager) {
         const tab = tabManager.tabs.get(tabManager.activeTabId);
         if (tab?.editorView) {
@@ -2083,49 +1923,6 @@ ipcRenderer.on('redo', () => {
     }
 });
 
-// Custom Preview CSS event handlers and trigger helpers
-function applyCustomPreviewCSS(cssContent) {
-    let styleTag = document.getElementById('custom-preview-style');
-    if (!styleTag) {
-        styleTag = document.createElement('style');
-        styleTag.id = 'custom-preview-style';
-        document.head.appendChild(styleTag);
-    }
-    const scopedCSS = scopeCSS(cssContent, '.preview-content');
-    styleTag.textContent = scopedCSS;
-}
-
-async function triggerLoadCustomCSS() {
-    try {
-        const result = await window.electronAPI.invoke('select-custom-css');
-        if (result) {
-            console.log('[RENDERER] Custom CSS loaded from:', result.path);
-            localStorage.setItem('customPreviewCSSPath', result.path);
-            localStorage.setItem('customPreviewCSSContent', result.content);
-            applyCustomPreviewCSS(result.content);
-            notifyUser('Custom preview stylesheet applied successfully.', 'success');
-        }
-    } catch (err) {
-        console.error('[RENDERER] Error loading custom CSS:', err);
-        notifyUser('Failed to load custom CSS stylesheet.', 'error');
-    }
-}
-
-function triggerClearCustomCSS() {
-    localStorage.removeItem('customPreviewCSSPath');
-    localStorage.removeItem('customPreviewCSSContent');
-    const styleTag = document.getElementById('custom-preview-style');
-    if (styleTag) {
-        styleTag.remove();
-    }
-    notifyUser('Custom preview stylesheet cleared.', 'info');
-}
-
-ipcRenderer.on('load-custom-css', triggerLoadCustomCSS);
-ipcRenderer.on('clear-custom-css', triggerClearCustomCSS);
-
-
-
 // Font size adjustment
 let currentFontSize = parseInt(localStorage.getItem('fontSize')) || 15;
 
@@ -2245,39 +2042,13 @@ function initializeExportForm(format) {
     document.getElementById('export-citeproc').checked = false;
     document.getElementById('export-toc-depth').value = 3;
 
-    // Toggle and reset PDF-specific fields
+    // PDF-specific fields
-    const pdfOnly = document.querySelector('.pdf-only');
-    if (pdfOnly) {
-        pdfOnly.style.display = (format === 'pdf') ? 'block' : 'none';
-    }
     if (format === 'pdf') {
         document.getElementById('pdf-engine').value = 'xelatex';
         document.getElementById('pdf-geometry').value = 'margin=1in';
         document.getElementById('custom-geometry').style.display = 'none';
     }
 
-    // Toggle and reset Reveal.js-specific fields
-    const revealjsOnly = document.querySelector('.revealjs-only');
-    if (revealjsOnly) {
-        revealjsOnly.style.display = (format === 'revealjs') ? 'block' : 'none';
-    }
-    const revealTheme = document.getElementById('reveal-theme');
-    if (revealTheme) revealTheme.value = 'black';
-    const revealTransition = document.getElementById('reveal-transition');
-    if (revealTransition) revealTransition.value = 'slide';
-    const revealSpeed = document.getElementById('reveal-speed');
-    if (revealSpeed) revealSpeed.value = 'default';
-    const revealSlideNumber = document.getElementById('reveal-slide-number');
-    if (revealSlideNumber) revealSlideNumber.checked = false;
-    const revealControls = document.getElementById('reveal-controls');
-    if (revealControls) revealControls.checked = true;
-    const revealProgress = document.getElementById('reveal-progress');
-    if (revealProgress) revealProgress.checked = true;
-    const revealHistory = document.getElementById('reveal-history');
-    if (revealHistory) revealHistory.checked = true;
-    const revealCenter = document.getElementById('reveal-center');
-    if (revealCenter) revealCenter.checked = true;
-
     // Clear bibliography fields
     document.getElementById('bibliography-file').value = '';
     document.getElementById('csl-file').value = '';
@@ -2337,18 +2108,6 @@ function collectExportOptions() {
             }
         }
 
-        // Reveal.js-specific options
-        if (currentExportFormat === 'revealjs') {
-            options.revealTheme = document.getElementById('reveal-theme').value;
-            options.revealTransition = document.getElementById('reveal-transition').value;
-            options.revealTransitionSpeed = document.getElementById('reveal-speed').value;
-            options.revealSlideNumber = document.getElementById('reveal-slide-number').checked;
-            options.revealControls = document.getElementById('reveal-controls').checked;
-            options.revealProgress = document.getElementById('reveal-progress').checked;
-            options.revealHistory = document.getElementById('reveal-history').checked;
-            options.revealCenter = document.getElementById('reveal-center').checked;
-        }
-
         // Bibliography
         const bibFile = document.getElementById('bibliography-file').value.trim();
         const cslFile = document.getElementById('csl-file').value.trim();
@@ -2359,15 +2118,6 @@ function collectExportOptions() {
         if (currentExportFormat === 'pdf') {
             options.pdfEngine = 'xelatex';
             options.geometry = 'margin=1in';
-        } else if (currentExportFormat === 'revealjs') {
-            options.revealTheme = 'black';
-            options.revealTransition = 'slide';
-            options.revealTransitionSpeed = 'default';
-            options.revealSlideNumber = false;
-            options.revealControls = true;
-            options.revealProgress = true;
-            options.revealHistory = true;
-            options.revealCenter = true;
         }
     }
 
@@ -3285,18 +3035,6 @@ function showPDFEditorDialog(operation, openedFilePath = null) {
         section.classList.add('hidden');
     });
 
-    // Hide visual thumbnail sidebar by default
-    const sidebar = document.getElementById('pdf-thumbnail-sidebar');
-    if (sidebar) {
-        sidebar.classList.add('hidden');
-    }
-    const body = document.querySelector('.pdf-editor-body');
-    if (body) {
-        body.classList.remove('side-by-side');
-    }
-    pdfDocInstance = null;
-    pdfPreviewState = { pages: [], filePath: '' };
-
     // Show the appropriate section and set title
     let sectionId, titleText;
     switch (operation) {
@@ -3330,11 +3068,7 @@ function showPDFEditorDialog(operation, openedFilePath = null) {
             titleText = 'Rotate Pages';
             if (openedFilePath) {
                 const rotateInput = document.getElementById('rotate-input-path');
-                if (rotateInput) {
+                if (rotateInput) rotateInput.value = openedFilePath;
-                    rotateInput.value = openedFilePath;
-                    // Trigger thumbnail generation
-                    setTimeout(() => onPDFFileSelected('rotate-input-path', openedFilePath), 50);
-                }
             }
             break;
         case 'delete':
@@ -3342,11 +3076,7 @@ function showPDFEditorDialog(operation, openedFilePath = null) {
             titleText = 'Delete Pages';
             if (openedFilePath) {
                 const deleteInput = document.getElementById('delete-input-path');
-                if (deleteInput) {
+                if (deleteInput) deleteInput.value = openedFilePath;
-                    deleteInput.value = openedFilePath;
-                    // Trigger thumbnail generation
-                    setTimeout(() => onPDFFileSelected('delete-input-path', openedFilePath), 50);
-                }
             }
             break;
         case 'reorder':
@@ -3354,11 +3084,7 @@ function showPDFEditorDialog(operation, openedFilePath = null) {
             titleText = 'Reorder Pages';
             if (openedFilePath) {
                 const reorderInput = document.getElementById('reorder-input-path');
-                if (reorderInput) {
+                if (reorderInput) reorderInput.value = openedFilePath;
-                    reorderInput.value = openedFilePath;
-                    // Trigger thumbnail generation
-                    setTimeout(() => onPDFFileSelected('reorder-input-path', openedFilePath), 50);
-                }
             }
             break;
         case 'watermark':
@@ -3519,7 +3245,6 @@ document.addEventListener('DOMContentLoaded', () => {
                         const file = e.target.files[0];
                         if (file) {
                             document.getElementById(button.inputId).value = file.path;
-                            onPDFFileSelected(button.inputId, file.path);
                         }
                     };
                     input.click();
@@ -3529,7 +3254,6 @@ document.addEventListener('DOMContentLoaded', () => {
                         const file = e.target.files[0];
                         if (file) {
                             document.getElementById(button.inputId).value = file.path;
-                            onPDFFileSelected(button.inputId, file.path);
                         }
                     };
                     input.click();
@@ -3674,7 +3398,7 @@ function showPDFValidationMessage(message, focusSelector = null) {
 // Process PDF Operation
 function processPDFOperation() {
     const operation = currentPDFOperation;
-    const operationData = { operation };
+    let operationData = { operation };
 
     try {
         switch (operation) {
@@ -4464,7 +4188,7 @@ function textToASCII(text, style) {
         lines[i] = '';
     }
 
-    for (const char of upperText) {
+    for (let char of upperText) {
         const charLines = font.chars[char] || font.chars[' '];
         if (charLines) {
             for (let i = 0; i < font.height; i++) {
@@ -4502,7 +4226,7 @@ function createASCIIBox(text, style, padding) {
     }
 
     // Content lines
-    for (const line of lines) {
+    for (let line of lines) {
         const paddedLine = line.padEnd(maxLength, ' ');
         result += chars.v + ' '.repeat(padding) + paddedLine + ' '.repeat(padding) + chars.v + '\n';
     }
@@ -5138,224 +4862,3 @@ ipcRenderer.on('show-video-tool', (event, tool) => {
         { duration: 5000 }
     );
 });
-
-// ============================================
-// PDF EDITOR VISUAL PAGE SIDEBAR HANDLERS
-// ============================================
-let pdfDocInstance = null;
-let pdfPreviewState = { pages: [], filePath: '' };
-
-function onPDFFileSelected(inputId, filePath) {
-    const eligibleInputs = ['rotate-input-path', 'delete-input-path', 'reorder-input-path'];
-    if (!eligibleInputs.includes(inputId)) {
-        return;
-    }
-
-    const sidebar = document.getElementById('pdf-thumbnail-sidebar');
-    if (sidebar) {
-        sidebar.classList.remove('hidden');
-    }
-    const body = document.querySelector('.pdf-editor-body');
-    if (body) {
-        body.classList.add('side-by-side');
-    }
-
-    loadPDFThumbnails(filePath);
-}
-
-async function loadPDFThumbnails(filePath) {
-    const grid = document.getElementById('pdf-thumbnail-grid');
-    if (!grid) return;
-
-    // Reset previous inputs
-    const rotateInput = document.getElementById('rotate-pages');
-    if (rotateInput) rotateInput.value = '';
-    const deleteInput = document.getElementById('delete-pages');
-    if (deleteInput) deleteInput.value = '';
-    const reorderInput = document.getElementById('reorder-pages');
-    if (reorderInput) reorderInput.value = '';
-
-    grid.innerHTML = '<div class="loading-thumbnails">Loading page thumbnails...</div>';
-
-    try {
-        const pdfjs = getPdfjsLib();
-        const loadingTask = pdfjs.getDocument(filePath);
-        pdfDocInstance = await loadingTask.promise;
-
-        pdfPreviewState.filePath = filePath;
-        pdfPreviewState.pages = [];
-
-        for (let i = 1; i <= pdfDocInstance.numPages; i++) {
-            pdfPreviewState.pages.push({
-                originalPageNum: i,
-                rotation: 0,
-                isDeleted: false
-            });
-        }
-
-        renderThumbnailGrid();
-    } catch (err) {
-        console.error('Error loading PDF thumbnails:', err);
-        grid.innerHTML = '<div class="thumbnail-error">Failed to load PDF thumbnails.</div>';
-    }
-}
-
-function renderThumbnailGrid() {
-    const grid = document.getElementById('pdf-thumbnail-grid');
-    if (!grid || !pdfDocInstance) return;
-
-    grid.innerHTML = '';
-
-    pdfPreviewState.pages.forEach((pageInfo, index) => {
-        const card = document.createElement('div');
-        card.className = 'pdf-thumbnail-card';
-        if (pageInfo.isDeleted) {
-            card.classList.add('marked-delete');
-        }
-
-        const heading = document.createElement('div');
-        heading.className = 'pdf-thumbnail-header';
-        heading.innerHTML = `<span class="badge">Page ${pageInfo.originalPageNum}</span>`;
-
-        const canvasContainer = document.createElement('div');
-        canvasContainer.className = 'canvas-container';
-
-        const canvas = document.createElement('canvas');
-        canvas.className = 'pdf-thumbnail-canvas';
-        if (pageInfo.rotation > 0) {
-            canvas.classList.add('rot' + pageInfo.rotation);
-        }
-        canvasContainer.appendChild(canvas);
-
-        // Render thumbnail canvas
-        renderThumbnail(pdfDocInstance, pageInfo.originalPageNum, canvas, pageInfo.rotation);
-
-        const controlsRow = document.createElement('div');
-        controlsRow.className = 'pdf-thumbnail-controls';
-
-        // Rotate Button
-        const rotateBtn = document.createElement('button');
-        rotateBtn.type = 'button';
-        rotateBtn.className = 'btn-rotate-thumbnail';
-        rotateBtn.innerHTML = '↻ Rotate 90°';
-        rotateBtn.addEventListener('click', () => {
-            pageInfo.rotation = (pageInfo.rotation + 90) % 360;
-            canvas.className = 'pdf-thumbnail-canvas';
-            if (pageInfo.rotation > 0) {
-                canvas.classList.add('rot' + pageInfo.rotation);
-            }
-            renderThumbnail(pdfDocInstance, pageInfo.originalPageNum, canvas, pageInfo.rotation);
-            syncRotateInput();
-        });
-
-        // Delete Checkbox
-        const deleteLabel = document.createElement('label');
-        deleteLabel.className = 'delete-thumbnail-checkbox';
-
-        const deleteChk = document.createElement('input');
-        deleteChk.type = 'checkbox';
-        deleteChk.checked = pageInfo.isDeleted;
-        deleteChk.addEventListener('change', (e) => {
-            pageInfo.isDeleted = e.target.checked;
-            card.classList.toggle('marked-delete', pageInfo.isDeleted);
-            syncDeleteInput();
-        });
-        deleteLabel.appendChild(deleteChk);
-        deleteLabel.appendChild(document.createTextNode(' Delete'));
-
-        // Reorder buttons
-        const reorderDiv = document.createElement('div');
-        reorderDiv.className = 'pdf-thumbnail-reorder';
-
-        const leftBtn = document.createElement('button');
-        leftBtn.type = 'button';
-        leftBtn.className = 'btn-reorder-left';
-        leftBtn.innerHTML = '◀';
-        leftBtn.disabled = (index === 0);
-        leftBtn.addEventListener('click', () => {
-            const temp = pdfPreviewState.pages[index];
-            pdfPreviewState.pages[index] = pdfPreviewState.pages[index - 1];
-            pdfPreviewState.pages[index - 1] = temp;
-            renderThumbnailGrid();
-            syncReorderInput();
-        });
-
-        const rightBtn = document.createElement('button');
-        rightBtn.type = 'button';
-        rightBtn.className = 'btn-reorder-right';
-        rightBtn.innerHTML = '▶';
-        rightBtn.disabled = (index === pdfPreviewState.pages.length - 1);
-        rightBtn.addEventListener('click', () => {
-            const temp = pdfPreviewState.pages[index];
-            pdfPreviewState.pages[index] = pdfPreviewState.pages[index + 1];
-            pdfPreviewState.pages[index + 1] = temp;
-            renderThumbnailGrid();
-            syncReorderInput();
-        });
-
-        reorderDiv.appendChild(leftBtn);
-        reorderDiv.appendChild(rightBtn);
-
-        controlsRow.appendChild(rotateBtn);
-        controlsRow.appendChild(deleteLabel);
-        controlsRow.appendChild(reorderDiv);
-
-        card.appendChild(heading);
-        card.appendChild(canvasContainer);
-        card.appendChild(controlsRow);
-
-        grid.appendChild(card);
-    });
-}
-
-async function renderThumbnail(pdfDoc, originalPageNum, canvasElement, rotation) {
-    try {
-        const page = await pdfDoc.getPage(originalPageNum);
-        const ctx = canvasElement.getContext('2d');
-
-        // Render at a fixed width of 100px
-        const unscaledViewport = page.getViewport({ scale: 1, rotation: 0 });
-        const scale = 100 / unscaledViewport.width;
-        const viewport = page.getViewport({ scale: scale, rotation: 0 });
-
-        canvasElement.width = viewport.width;
-        canvasElement.height = viewport.height;
-
-        await page.render({
-            canvasContext: ctx,
-            viewport: viewport
-        }).promise;
-    } catch (err) {
-        console.error('Error rendering page canvas:', err);
-    }
-}
-
-function syncRotateInput() {
-    const rotatedPages = pdfPreviewState.pages
-        .filter(p => p.rotation > 0)
-        .map(p => p.originalPageNum);
-
-    const rotateInput = document.getElementById('rotate-pages');
-    if (rotateInput) {
-        rotateInput.value = rotatedPages.join(', ');
-    }
-}
-
-function syncDeleteInput() {
-    const deletedPages = pdfPreviewState.pages
-        .filter(p => p.isDeleted)
-        .map(p => p.originalPageNum);
-
-    const deleteInput = document.getElementById('delete-pages');
-    if (deleteInput) {
-        deleteInput.value = deletedPages.join(', ');
-    }
-}
-
-function syncReorderInput() {
-    const order = pdfPreviewState.pages.map(p => p.originalPageNum);
-    const reorderInput = document.getElementById('reorder-pages');
-    if (reorderInput) {
-        reorderInput.value = order.join(', ');
-    }
-}

src/styles-modern.css

@@ -2372,254 +2372,3 @@ body[class*="dark"] .breadcrumb-bar {
 @keyframes analyticsSlideUp { from{transform:translateY(16px);opacity:0} to{transform:translateY(0);opacity:1} }
 body[class*="dark"] .analytics-modal { background:var(--gray-800,#1f2937); }
 body[class*="dark"] .word-tag { background:var(--gray-700,#374151); }
-
-/* ========================================
-   Interactive PDF Thumbnail Sidebar Styles
-   ======================================== */
-.pdf-editor-body.side-by-side {
-  display: flex;
-  flex-direction: row;
-  gap: 16px;
-  height: 550px;
-  overflow: hidden;
-}
-
-.pdf-editor-left-panel {
-  flex: 1.2;
-  overflow-y: auto;
-  padding-right: 8px;
-  height: 100%;
-}
-
-.pdf-editor-right-panel {
-  flex: 0.8;
-  display: flex;
-  flex-direction: column;
-  border-left: 1px solid var(--border-color, #e5e7eb);
-  padding-left: 16px;
-  height: 100%;
-  overflow: hidden;
-}
-
-.pdf-editor-right-panel h4 {
-  margin: 0 0 4px 0;
-  font-size: 15px;
-  font-weight: 600;
-  color: var(--text-primary);
-}
-
-.pdf-editor-right-panel .sidebar-help {
-  margin: 0 0 12px 0;
-  font-size: 11px;
-  color: var(--text-secondary, #6b7280);
-  line-height: 1.4;
-}
-
-.pdf-thumbnail-grid {
-  flex: 1;
-  display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
-  gap: 12px;
-  overflow-y: auto;
-  padding: 4px;
-}
-
-.pdf-thumbnail-card {
-  display: flex;
-  flex-direction: column;
-  border: 1px solid var(--border-color, #e5e7eb);
-  border-radius: 8px;
-  background: var(--bg-primary, #ffffff);
-  box-shadow: var(--shadow-sm);
-  padding: 8px;
-  transition: all var(--transition-speed, 0.3s) var(--transition-ease);
-  position: relative;
-  overflow: hidden;
-}
-
-.pdf-thumbnail-card:hover {
-  transform: translateY(-2px);
-  box-shadow: var(--shadow-md);
-  border-color: var(--primary-light, #8b9aff);
-}
-
-.pdf-thumbnail-card.marked-delete {
-  border-color: var(--error, #ef4444);
-  background: rgba(239, 68, 68, 0.05);
-}
-
-.pdf-thumbnail-card.marked-delete::after {
-  content: "DELETE";
-  position: absolute;
-  top: 50%;
-  left: 50%;
-  transform: translate(-50%, -50%) rotate(-15deg);
-  background: rgba(239, 68, 68, 0.95);
-  color: #fff;
-  font-size: 10px;
-  font-weight: 700;
-  padding: 4px 8px;
-  border-radius: 4px;
-  pointer-events: none;
-  box-shadow: var(--shadow-sm);
-  letter-spacing: 0.5px;
-  white-space: nowrap;
-}
-
-.pdf-thumbnail-header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-bottom: 6px;
-}
-
-.pdf-thumbnail-header .badge {
-  font-size: 11px;
-  font-weight: 600;
-  background: var(--bg-tertiary, #f3f4f6);
-  color: var(--text-primary);
-  padding: 2px 6px;
-  border-radius: 4px;
-  font-family: var(--font-mono, monospace);
-}
-
-.canvas-container {
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  background: var(--bg-secondary, #f9fafb);
-  border: 1px solid var(--border-color, #e5e7eb);
-  border-radius: 6px;
-  padding: 6px;
-  height: 120px;
-  overflow: hidden;
-}
-
-.pdf-thumbnail-canvas {
-  max-width: 100%;
-  max-height: 100%;
-  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
-  transition: transform 0.3s ease;
-}
-
-/* CSS Rotations */
-.rot90 {
-  transform: rotate(90deg);
-}
-.rot180 {
-  transform: rotate(180deg);
-}
-.rot270 {
-  transform: rotate(270deg);
-}
-
-.pdf-thumbnail-controls {
-  display: flex;
-  flex-direction: column;
-  gap: 6px;
-  margin-top: 8px;
-}
-
-.pdf-thumbnail-controls button,
-.pdf-thumbnail-controls label {
-  font-size: 11px;
-}
-
-.btn-rotate-thumbnail {
-  background: var(--bg-tertiary, #f3f4f6);
-  border: 1px solid var(--border-color, #e5e7eb);
-  color: var(--text-primary);
-  border-radius: 4px;
-  padding: 3px 6px;
-  cursor: pointer;
-  width: 100%;
-  text-align: center;
-  transition: all 0.2s;
-  font-weight: 500;
-}
-
-.btn-rotate-thumbnail:hover {
-  background: var(--primary-light, #8b9aff);
-  color: #fff;
-  border-color: var(--primary-dark);
-}
-
-.delete-thumbnail-checkbox {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  gap: 4px;
-  cursor: pointer;
-  user-select: none;
-  font-weight: 500;
-  color: var(--text-secondary);
-}
-
-.delete-thumbnail-checkbox input {
-  margin: 0;
-  cursor: pointer;
-}
-
-.pdf-thumbnail-reorder {
-  display: flex;
-  justify-content: space-between;
-  gap: 4px;
-}
-
-.btn-reorder-left,
-.btn-reorder-right {
-  flex: 1;
-  background: var(--bg-tertiary, #f3f4f6);
-  border: 1px solid var(--border-color, #e5e7eb);
-  color: var(--text-primary);
-  border-radius: 4px;
-  padding: 2px;
-  cursor: pointer;
-  transition: all 0.2s;
-}
-
-.btn-reorder-left:hover:not(:disabled),
-.btn-reorder-right:hover:not(:disabled) {
-  background: var(--bg-secondary);
-  border-color: var(--text-muted);
-}
-
-.btn-reorder-left:disabled,
-.btn-reorder-right:disabled {
-  opacity: 0.3;
-  cursor: not-allowed;
-}
-
-.loading-thumbnails,
-.thumbnail-error {
-  grid-column: 1 / -1;
-  text-align: center;
-  padding: 40px 20px;
-  font-size: 13px;
-  color: var(--text-muted);
-}
-
-.thumbnail-error {
-  color: var(--error, #ef4444);
-}
-
-/* Dark mode adjustments */
-body[class*="dark"] .pdf-thumbnail-card {
-  background: var(--gray-800, #1f2937);
-  border-color: var(--gray-700, #374151);
-}
-body[class*="dark"] .pdf-thumbnail-header .badge {
-  background: var(--gray-700, #374151);
-  color: var(--gray-200);
-}
-body[class*="dark"] .canvas-container {
-  background: var(--gray-900, #111827);
-  border-color: var(--gray-700);
-}
-body[class*="dark"] .btn-rotate-thumbnail,
-body[class*="dark"] .btn-reorder-left,
-body[class*="dark"] .btn-reorder-right {
-  background: var(--gray-700, #374151);
-  border-color: var(--gray-600);
-  color: var(--gray-200);
-}

src/tauri-commands.js

@@ -0,0 +1,96 @@
+// Tauri Commands Bridge for MarkdownConverter
+// Replaces preload.js — uses Tauri's invoke() instead of ipcRenderer
+
+const { invoke } = window.__TAURI__.core;
+const { listen } = window.__TAURI__.event;
+
+// ============================================
+// FILE OPERATIONS
+// ============================================
+export const file = {
+  read: (path) => invoke('read_file', { path }),
+  write: (path, content) => invoke('write_file', { path, content }),
+  delete: (path) => invoke('delete_file', { path }),
+  exists: (path) => invoke('path_exists', { path }),
+  isDirectory: (path) => invoke('is_directory', { path }),
+  listDirectory: (path) => invoke('list_directory', { path }),
+  ensureDir: (path) => invoke('ensure_directory', { path }),
+  copy: (source, destination) => invoke('copy_path', { source, destination }),
+  move: (source, destination) => invoke('move_path', { source, destination }),
+};
+
+// ============================================
+// EXPORT OPERATIONS
+// ============================================
+export const exportDoc = {
+  markdown: (inputPath, outputPath, format, options) =>
+    invoke('export_markdown', { inputPath, outputPath, format, options }),
+  checkPandoc: () => invoke('check_pandoc_available', {}),
+};
+
+// ============================================
+// GIT OPERATIONS
+// ============================================
+export const git = {
+  status: (repoPath) => invoke('git_status', { repoPath }),
+  stage: (repoPath, path) => invoke('git_stage', { repoPath, path }),
+  commit: (repoPath, message) => invoke('git_commit', { repoPath, message }),
+  log: (repoPath, limit) => invoke('git_log', { repoPath, limit }),
+  diff: (repoPath, path) => invoke('git_diff', { repoPath, path }),
+};
+
+// ============================================
+// APP OPERATIONS
+// ============================================
+export const app = {
+  getVersion: () => invoke('get_app_version'),
+  getRecentFiles: () => invoke('get_recent_files'),
+  saveRecentFiles: (files) => invoke('save_recent_files', { files }),
+};
+
+// ============================================
+// PDF OPERATIONS
+// ============================================
+export const pdf = {
+  getPageCount: (path) => invoke('get_pdf_page_count', { path }),
+  merge: (paths, output) => invoke('merge_pdfs', { paths, output }),
+  split: (input, outputDir, pagesPerSplit) => invoke('split_pdf', { input, outputDir, pagesPerSplit }),
+  rotate: (input, output, degrees) => invoke('rotate_pdf', { input, output, degrees }),
+  deletePages: (input, output, pages) => invoke('delete_pdf_pages', { input, output, pages }),
+};
+
+// ============================================
+// DIALOG OPERATIONS
+// ============================================
+export const dialog = {
+  openFile: () => invoke('open_file_dialog', {}),
+  saveFile: (defaultName) => invoke('save_file_dialog', { defaultName }),
+  selectFolder: () => invoke('select_folder_dialog', {}),
+};
+
+// ============================================
+// EVENT LISTENERS
+// ============================================
+export const events = {
+  onFileNew: (callback) => listen('file-new', callback),
+  onFileOpened: (callback) => listen('file-opened', callback),
+  onFileSave: (callback) => listen('file-save', callback),
+  onTogglePreview: (callback) => listen('toggle-preview', callback),
+  onToggleFind: (callback) => listen('toggle-find', callback),
+  onUndo: (callback) => listen('undo', callback),
+  onRedo: (callback) => listen('redo', callback),
+  onThemeChanged: (callback) => listen('theme-changed', callback),
+  onToggleCommandPalette: (callback) => listen('toggle-command-palette', callback),
+  onToggleSidebarPanel: (callback) => listen('toggle-sidebar-panel', callback),
+  onToggleBottomPanel: (callback) => listen('toggle-bottom-panel', callback),
+  onConversionComplete: (callback) => listen('conversion-complete', callback),
+  onConversionStatus: (callback) => listen('conversion-status', callback),
+};
+
+// ============================================
+// PLUGIN OPERATIONS
+// ============================================
+export const plugins = {
+  list: () => invoke('list_plugins', {}),
+  get: (name) => invoke('get_plugin', { name }),
+};

src/utils/ModalManager.js

@@ -1,6 +1,6 @@
 /**
  * ModalManager - Unified modal system with accessibility support
- * @version 4.4.3
+ * @version 4.3.0
  */
 class ModalManager {
     #modal;
@@ -237,8 +237,8 @@ class ModalManager {
     }
 }
 
-// Export for use in renderer - avoid duplicate declaration
+// Export for use in renderer
-if (typeof window !== 'undefined' && !window.ModalManager) {
+if (typeof window !== 'undefined') {
     window.ModalManager = ModalManager;
 }
 

src/vite.config.js

@@ -0,0 +1,15 @@
+import { defineConfig } from 'vite';
+
+export default defineConfig({
+  root: '.',
+  base: './',
+  build: {
+    outDir: '../dist',
+    emptyOutDir: true,
+  },
+  server: {
+    port: 1420,
+    strictPort: true,
+  },
+  clearScreen: false,
+});

src/wordTemplateExporter.js

@@ -655,7 +655,7 @@ class WordTemplateExporter {
      */
     parseInlineFormatting(text) {
         let xml = '';
-        const pos = 0;
+        let pos = 0;
 
         // Patterns for inline formatting
         const patterns = [

src/zen-mode.js

@@ -117,7 +117,7 @@ class ZenMode {
     _applyTypewriterBehavior(view) {
         // We use a custom update listener that scrolls the cursor to center.
         // This is stored on the instance so we can clean it up.
-        const scrollTimeout = null;
+        let scrollTimeout = null;
 
         const scrollFn = () => {
             if (!this.active) return;

tests/git-operations.test.js

@@ -1,123 +0,0 @@
-/**
- * Git Operations Utilities Test Suite
- * Tests for async patterns and error handling
- * @version 4.3.0
- */
-
-describe('GitOperations Utilities', () => {
-  describe('error handling patterns', () => {
-    it('should handle git errors gracefully', () => {
-      const errorResponse = { error: 'Not a git repository' };
-      
-      expect(errorResponse).toHaveProperty('error');
-      expect(errorResponse.error).toContain('repository');
-    });
-
-    it('should return error object on failure', () => {
-      const failureResult = { error: 'Failed to commit' };
-      
-      expect(failureResult).toBeDefined();
-      expect(failureResult.error).toBeTruthy();
-    });
-  });
-
-  describe('async patterns', () => {
-    it('should handle async operations', async () => {
-      const asyncFn = async () => {
-        return { status: 'success' };
-      };
-
-      const result = await asyncFn();
-      expect(result).toHaveProperty('status');
-    });
-
-    it('should handle async errors', async () => {
-      const asyncFnWithError = async () => {
-        throw new Error('Git operation failed');
-      };
-
-      try {
-        await asyncFnWithError();
-        expect(true).toBe(false); // Should not reach here
-      } catch (err) {
-        expect(err.message).toContain('Git');
-      }
-    });
-  });
-
-  describe('git operations', () => {
-    it('should document expected operations', () => {
-      const gitOps = [
-        'getStatus',
-        'stage',
-        'commit',
-        'log',
-        'diff',
-        'branch',
-        'checkout',
-        'push',
-        'pull'
-      ];
-
-      expect(gitOps.length).toBeGreaterThan(0);
-      gitOps.forEach(op => {
-        expect(typeof op).toBe('string');
-        expect(op.length).toBeGreaterThan(0);
-      });
-    });
-
-    it('should handle directory paths', () => {
-      const paths = [
-        '/home/user/project',
-        './current/dir',
-        '../parent/dir'
-      ];
-
-      paths.forEach(pathStr => {
-        expect(typeof pathStr).toBe('string');
-        expect(pathStr.length).toBeGreaterThan(0);
-      });
-    });
-
-    it('should handle commit messages', () => {
-      const messages = [
-        'fix: bug in git panel',
-        'feat: add new feature',
-        'refactor: clean up code'
-      ];
-
-      messages.forEach(msg => {
-        expect(typeof msg).toBe('string');
-        expect(msg.length).toBeGreaterThan(0);
-      });
-    });
-  });
-
-  describe('response structures', () => {
-    it('should return status info', () => {
-      const statusResponse = {
-        conflicted: [],
-        created: [],
-        deleted: [],
-        modified: [],
-        renamed: [],
-        staged: ['file.md']
-      };
-
-      expect(statusResponse).toHaveProperty('staged');
-      expect(Array.isArray(statusResponse.staged)).toBe(true);
-    });
-
-    it('should return log entries', () => {
-      const logResponse = {
-        all: [
-          { hash: 'abc123', message: 'fix: something' }
-        ],
-        latest: { hash: 'abc123', message: 'fix: something' }
-      };
-
-      expect(logResponse).toHaveProperty('all');
-      expect(Array.isArray(logResponse.all)).toBe(true);
-    });
-  });
-});

tests/markdown-extensions.test.js

@@ -76,75 +76,6 @@ describe('Markdown Extensions', () => {
         });
     });
 
-    describe('Admonitions full parsing integration (mocked environment)', () => {
-        const extension = {
-            name: 'admonition',
-            level: 'block',
-            start(src) { return src.match(/^:::(note|warning|tip|danger|info)/m)?.index; },
-            tokenizer(src) {
-                const match = src.match(/^:::(note|warning|tip|danger|info)\s*\n([\s\S]*?)^:::\s*$/m);
-                if (match && match.index === 0) {
-                    const admonitionType = match[1];
-                    const text = match[2].trim();
-                    const tokens = [];
-                    this.lexer.blockTokens(text, tokens);
-                    return {
-                        type: 'admonition',
-                        raw: match[0],
-                        admonitionType,
-                        text,
-                        tokens
-                    };
-                }
-            },
-            renderer(token) {
-                const icons = { note: 'ℹ', warning: '⚠', tip: '💡', danger: '🔴', info: 'ℹ' };
-                const icon = icons[token.admonitionType] || 'ℹ';
-                const inner = this.parser.parse(token.tokens || []);
-                return `<div class="admonition admonition-${token.admonitionType}">
-                    <div class="admonition-title">${icon} ${token.admonitionType.charAt(0).toUpperCase() + token.admonitionType.slice(1)}</div>
-                    <div class="admonition-content">${inner}</div>
-                </div>`;
-            }
-        };
-
-        test('tokenizer correctly extracts tokens and calls blockTokens', () => {
-            const src = ':::note\nThis is a note.\n:::';
-            const mockLexer = {
-                blockTokens: jest.fn((text, tokens) => {
-                    tokens.push({ type: 'text', text });
-                })
-            };
-            const context = { lexer: mockLexer };
-            const result = extension.tokenizer.call(context, src);
-            
-            expect(result).toBeDefined();
-            expect(result.type).toBe('admonition');
-            expect(result.admonitionType).toBe('note');
-            expect(result.text).toBe('This is a note.');
-            expect(mockLexer.blockTokens).toHaveBeenCalledWith('This is a note.', expect.any(Array));
-            expect(result.tokens).toEqual([{ type: 'text', text: 'This is a note.' }]);
-        });
-
-        test('renderer correctly translates tokens to HTML', () => {
-            const token = {
-                type: 'admonition',
-                admonitionType: 'warning',
-                tokens: [{ type: 'text', text: 'Be careful!' }]
-            };
-            const mockParser = {
-                parse: jest.fn((tokens) => '<p>Be careful!</p>')
-            };
-            const context = { parser: mockParser };
-            const html = extension.renderer.call(context, token);
-            
-            expect(html).toContain('admonition admonition-warning');
-            expect(html).toContain('⚠ Warning');
-            expect(html).toContain('<p>Be careful!</p>');
-            expect(mockParser.parse).toHaveBeenCalledWith(token.tokens);
-        });
-    });
-
     describe('PlantUML hex encoding', () => {
         const plantumlEncode = (text) => {
             const hex = Array.from(Buffer.from(text, 'utf-8'))
@@ -196,53 +127,4 @@ describe('Markdown Extensions', () => {
             expect(slugify('simple')).toBe('simple');
         });
     });
-
-    describe('scopeCSS utility', () => {
-        const scopeCSS = (cssText, scopeSelector) => {
-            if (!cssText) return '';
-            return cssText.replace(/([^\r\n,{}]+)(,(?=[^}]*{)|(?=[^{]*{))/g, (match, selector, separator) => {
-                const trimmed = selector.trim();
-                if (!trimmed || trimmed.startsWith('@') || trimmed.startsWith(':root') || trimmed.startsWith('from') || trimmed.startsWith('to') || /^\d+%$/.test(trimmed)) {
-                    return match;
-                }
-                return scopeSelector + ' ' + trimmed + (separator || '');
-            });
-        };
-
-        test('scopes standard tag selector', () => {
-            const css = 'h1 { color: red; }';
-            const scoped = scopeCSS(css, '.preview-content');
-            expect(scoped).toBe('.preview-content h1{ color: red; }');
-        });
-
-        test('scopes multiple class selectors', () => {
-            const css = '.title, .content { font-family: sans-serif; }';
-            const scoped = scopeCSS(css, '.preview-content');
-            expect(scoped).toBe('.preview-content .title,.preview-content .content{ font-family: sans-serif; }');
-        });
-
-        test('ignores @rules like @media', () => {
-            const css = '@media (max-width: 600px) { h1 { color: blue; } }';
-            const scoped = scopeCSS(css, '.preview-content');
-            expect(scoped).toContain('@media (max-width: 600px)');
-        });
-
-        test('ignores :root selector', () => {
-            const css = ':root { --color: red; }';
-            const scoped = scopeCSS(css, '.preview-content');
-            expect(scoped).toBe(':root { --color: red; }');
-        });
-
-        test('ignores keyframe percentages', () => {
-            const css = '0% { opacity: 0; } 100% { opacity: 1; }';
-            const scoped = scopeCSS(css, '.preview-content');
-            expect(scoped).toContain('0%');
-            expect(scoped).toContain('100%');
-        });
-
-        test('handles empty input', () => {
-            expect(scopeCSS('', '.preview-content')).toBe('');
-            expect(scopeCSS(null, '.preview-content')).toBe('');
-        });
-    });
 });

tests/pdf-operations.test.js

@@ -1,95 +0,0 @@
-/**
- * PDF Operations Utilities Test Suite
- * Tests for helper functions and logic patterns
- * @version 4.3.0
- */
-
-describe('PDFOperations Utilities', () => {
-  describe('page range parsing', () => {
-    it('should parse single page numbers', () => {
-      // Test logic: parsing "1" should extract page index 0
-      const input = '1';
-      const pages = [0]; // Parsed result
-      
-      expect(pages.length).toBe(1);
-      expect(pages[0]).toBe(0);
-    });
-
-    it('should parse page ranges', () => {
-      // Test logic: parsing "1-3" should extract pages 0, 1, 2
-      const input = '1-3';
-      const pages = [0, 1, 2]; // Expected result
-      
-      expect(pages.length).toBe(3);
-      expect(pages).toEqual([0, 1, 2]);
-    });
-
-    it('should handle multiple ranges', () => {
-      // Test logic: parsing "1-2,4-5" should extract pages 0,1,3,4
-      const input = '1-2,4-5';
-      const pages = [0, 1, 3, 4]; // Expected result
-      
-      expect(pages.length).toBe(4);
-      expect(pages).toEqual([0, 1, 3, 4]);
-    });
-
-    it('should sort pages in ascending order', () => {
-      const unsorted = [2, 0, 3, 1];
-      const sorted = unsorted.sort((a, b) => a - b);
-      
-      expect(sorted).toEqual([0, 1, 2, 3]);
-    });
-  });
-
-  describe('hex color conversion', () => {
-    it('should validate hex color format', () => {
-      const validHex = '#FF5733';
-      const isValid = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.test(validHex);
-      
-      expect(isValid).toBe(true);
-    });
-
-    it('should detect invalid hex colors', () => {
-      const invalidColors = ['#GG5733', '#12345', 'notahex'];
-      
-      invalidColors.forEach(color => {
-        const isValid = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.test(color);
-        expect(isValid).toBe(false);
-      });
-    });
-  });
-
-  describe('error handling', () => {
-    it('should handle empty input', () => {
-      const input = '';
-      expect(input.length).toBe(0);
-      // Should not process empty strings
-      expect(input === '').toBe(true);
-    });
-
-    it('should handle invalid page numbers', () => {
-      const testPages = [
-        { input: '0', isValid: false },
-        { input: '-1', isValid: false },
-        { input: 'abc', isValid: false },
-        { input: '1', isValid: true },
-        { input: '5', isValid: true }
-      ];
-      
-      testPages.forEach(({ input, isValid }) => {
-        const num = parseInt(input);
-        
-        if (isNaN(num)) {
-          // Non-numeric string
-          expect(isValid).toBe(false);
-        } else if (num < 1) {
-          // Zero or negative
-          expect(isValid).toBe(false);
-        } else {
-          // Positive number
-          expect(isValid).toBe(true);
-        }
-      });
-    });
-  });
-});

tests/security-path-handling.test.js

@@ -1,114 +0,0 @@
-/**
- * Security: Path Traversal Prevention Test Suite
- * @version 4.3.0
- */
-
-const path = require('path');
-
-describe('Security: Path Handling', () => {
-  describe('path traversal prevention', () => {
-    it('should detect path traversal patterns', () => {
-      const maliciousPaths = [
-        '../etc/passwd',
-        '../../sensitive',
-        './../outside'
-      ];
-
-      maliciousPaths.forEach(pathStr => {
-        // Path traversal attempts contain .. patterns
-        expect(pathStr).toMatch(/\.\./);
-      });
-    });
-
-    it('should normalize relative paths safely', () => {
-      const safePaths = [
-        './documents/file.md',
-        'relative/path/file.txt'
-      ];
-
-      safePaths.forEach(pathStr => {
-        const normalized = path.normalize(pathStr);
-        // Safe relative paths should normalize cleanly
-        expect(normalized).toBeDefined();
-        expect(typeof normalized).toBe('string');
-      });
-    });
-
-    it('should detect absolute paths', () => {
-      const absolutePath = '/etc/passwd';
-      const isAbsolute = path.isAbsolute(absolutePath);
-      
-      // Linux/Mac: /path is absolute
-      if (process.platform !== 'win32') {
-        expect(isAbsolute).toBe(true);
-      }
-    });
-
-    it('should safely join paths with base directory', () => {
-      const baseDir = '/safe/base/directory';
-      const userInput = 'documents/file.md';
-      
-      const joined = path.join(baseDir, userInput);
-      
-      // Result should contain the safe base
-      expect(joined).toContain('base');
-      expect(joined).toContain('documents');
-    });
-  });
-
-  describe('filename safety', () => {
-    it('should identify safe filenames', () => {
-      const safeNames = [
-        'document.md',
-        'my-file.txt',
-        'file_name.pdf',
-        'report_2026_04_24.xlsx'
-      ];
-
-      safeNames.forEach(name => {
-        // Safe names should not contain path separators or null bytes
-        const isSafe = !/[\\/\0]/.test(name) && name.length > 0;
-        expect(isSafe).toBe(true);
-      });
-    });
-
-    it('should flag filenames with path separators', () => {
-      const problematicNames = [
-        'file/with/slashes.txt',
-        'file\\with\\backslashes.txt'
-      ];
-
-      problematicNames.forEach(name => {
-        // These contain path separators and should be flagged
-        const hasPathSeparators = /[\\/]/.test(name);
-        expect(hasPathSeparators).toBe(true);
-      });
-    });
-
-    it('should enforce minimum filename length', () => {
-      const emptyName = '';
-      
-      expect(emptyName.length).toBe(0);
-      expect(emptyName.length > 0).toBe(false);
-    });
-  });
-
-  describe('validation patterns', () => {
-    it('should validate path existence check pattern', () => {
-      const validationPattern = /^[a-zA-Z0-9._\-/]+$/;
-      
-      const validPaths = ['documents/file.md', 'folder_2026/data.csv'];
-      validPaths.forEach(pathStr => {
-        // These should match a reasonable filename pattern
-        expect(typeof pathStr).toBe('string');
-      });
-    });
-
-    it('should prevent null byte injection', () => {
-      const pathWithNullByte = 'file.txt\0.exe';
-      
-      const isSafe = !pathWithNullByte.includes('\0');
-      expect(isSafe).toBe(false); // Has null byte, not safe
-    });
-  });
-});