minor refactor, doc fixing

backend/export.py

@@ -13,23 +13,8 @@ from pathlib import Path
 from typing import Optional, Tuple
 import mimetypes
 
-
-# Media type detection
-MEDIA_EXTENSIONS = {
-    'image': {'.jpg', '.jpeg', '.png', '.gif', '.webp'},
-    'audio': {'.mp3', '.wav', '.ogg', '.m4a'},
-    'video': {'.mp4', '.webm'},
-    'document': {'.pdf'}
-}
-
-
-def get_media_type(filename: str) -> Optional[str]:
-    """Determine media type based on file extension."""
-    ext = Path(filename).suffix.lower()
-    for media_type, extensions in MEDIA_EXTENSIONS.items():
-        if ext in extensions:
-            return media_type
-    return None
+# Import shared media type definitions from utils to avoid duplication
+from backend.utils import MEDIA_EXTENSIONS, get_media_type
 
 
 def get_media_as_base64(media_path: Path) -> Optional[Tuple[str, str]]:

documentation/API.md

@@ -114,8 +114,8 @@ Upload a media file to the `_attachments` directory. Files are automatically org
 | Type | Formats | Max Size |
 |------|---------|----------|
 | Images | JPG, PNG, GIF, WebP | 10 MB |
-| Audio | MP3, WAV, OGG | 50 MB |
-| Video | MP4, WebM | 100 MB |
+| Audio | MP3, WAV, OGG, M4A | 50 MB |
+| Video | MP4, WebM, MOV, AVI | 100 MB |
 | Documents | PDF | 20 MB |
 
 **Response:**

documentation/FEATURES.md

@@ -19,10 +19,11 @@
 - **Drag & drop upload** - Drop files from your file system directly into the editor
 - **Clipboard paste** - Paste images from clipboard with Ctrl+V
 - **Images** - JPG, PNG, GIF, WebP (max 10MB)
-- **Audio** - MP3, WAV, OGG (max 50MB)
-- **Video** - MP4, WebM (max 100MB)
+- **Audio** - MP3, WAV, OGG, M4A (max 50MB)
+- **Video** - MP4, WebM, MOV, AVI (max 100MB)
 - **Documents** - PDF (max 20MB)
 - **In-app viewing** - View all media types directly in the sidebar
+- **Inline preview** - Audio/video players and PDF viewer embedded in notes
 
 ### Organization
 - **Folder hierarchy** - Organize notes in nested folders