Show all non-binary files in folder panel, including media files

Replace whitelist approach with binary exclusion list. All text files
regardless of extension are now visible. Video and audio files are also
shown (images already supported, video player exists in bottom panel).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ozgesolidkey

src/main/index.ts

@@ -1629,8 +1629,17 @@ ipcMain.handle(IPC.READ_FOLDER, async (_, folderPath: string) => {
 
       if (entry.isFile()) {
         const ext = path.extname(entry.name).toLowerCase();
-        // Include text-based files or files without extension
-        if (TEXT_EXTENSIONS.has(ext) || IMAGE_EXTENSIONS.has(ext) || ext === '') {
+        // Exclude known binary formats, show everything else (text + images)
+        const BINARY_EXTENSIONS = new Set([
+          '.exe', '.dll', '.so', '.dylib', '.o', '.a', '.lib',
+          '.zip', '.tar', '.gz', '.bz2', '.xz', '.7z', '.rar', '.zst',
+          '.bin', '.dat', '.db', '.sqlite', '.sqlite3',
+          '.class', '.pyc', '.pyo', '.wasm',
+          '.dmg', '.iso', '.img',
+          '.pdf', '.doc', '.docx', '.xls', '.xlsx', '.ppt', '.pptx',
+          '.ttf', '.otf', '.woff', '.woff2', '.eot',
+        ]);
+        if (!BINARY_EXTENSIONS.has(ext)) {
           try {
             const stat = await fs.promises.stat(fullPath);
             files.push({