docs: correct feature status for SVG and PDF

Both SVG and PDF support are prepared in code structure but
not yet functionally implemented. They currently show 1x1
placeholder images. Moved to 'Planned Features' section with
proper status documentation.

docs/features.md

@@ -14,20 +14,22 @@ This document describes the implemented and planned features of Noctua, a modern
   - Real-time transformation preview
   - EXIF metadata extraction
 
-#### Vector Graphics (Implemented)
+#### Vector Graphics (Planned)
 - **Formats**: SVG
-- **Capabilities**:
+- **Status**: Code structure prepared, but rendering not yet implemented
+- **Planned capabilities**:
   - High-quality rendering via `resvg`
   - Scalable display without quality loss
   - Metadata extraction
-  - Note: Transformations not yet implemented for vector documents
+  - Transformations (rotate, flip)
 
-#### Portable Documents (Implemented)
+#### Portable Documents (Planned)
 - **Formats**: PDF
-- **Capabilities**:
+- **Status**: Code structure prepared, but rendering not yet implemented
+- **Planned capabilities**:
   - First page rendering
-  - Basic transformations on rendered page
-  - Note: Multi-page navigation not yet implemented
+  - Multi-page navigation
+  - Basic transformations on rendered pages
 
 ### Navigation
 
@@ -140,17 +142,24 @@ Full keyboard-driven workflow:
 
 ### High Priority
 
+#### SVG Support
+- Implement proper SVG parsing and rendering
+- Integration with `resvg` library
+- Scalable vector display
+- Transformation support
+
+#### PDF Support
+- Implement PDF rendering backend
+- First page display
+- Multi-page navigation
+- Page thumbnails
+
 #### File Operations
 - File dialog integration (OpenPath message prepared)
 - Save transformed images
 - Copy/Move/Delete operations
 - Drag-and-drop support
 
-#### Multi-page Documents
-- PDF page navigation
-- Multi-page TIFF support
-- Page thumbnails
-
 #### Error Handling
 - User-friendly error messages (ShowError/ClearError prepared)
 - Graceful handling of corrupted files
@@ -158,10 +167,9 @@ Full keyboard-driven workflow:
 
 ### Medium Priority
 
-#### Vector Document Transformations
-- Rotate SVG files
-- Flip SVG files
-- Transform preservation on save
+#### Multi-format TIFF Support
+- Multi-page TIFF navigation
+- Page thumbnails
 
 #### Enhanced Navigation
 - Thumbnail strip