写真の日付・場所別整理

Please analyze the EXIF information of all photos in the ~/Pictures/Unsorted folder:
- Date range of captures
- Whether GPS location information is included
- Number of photos and total size
- Whether any photos are missing EXIF information

Then organize photos into ~/Pictures/Organized with this structure:
- Year/Month/Day (e.g., 2024/12/25)
- Keep original filenames
- For photos without EXIF date, use file modification date
- Generate an organization report