v0.1.7

Bug fix release addressing export issues, search navigation, and file picker styling.

Bug Fixes

Export fixes:
- Combined exports (--combined) now properly add cases to the manifest
- Filter metadata is now correctly persisted in the export manifest
- Attachments are now downloaded in combined export mode
- Progress counter uses atomic operations for accurate counts
Search navigation: Fixed Ctrl-f search scrolling to wrong positions
- Now tracks actual viewport line offsets instead of synthetic line numbers
- Correctly handles headers, metadata, and separator lines in position calculations
API client cleanup: Added Close() method to properly release resources
- Debug file descriptor is now closed on application exit

File picker styling: Redesigned for better readability
- Dark background with proper contrast
- Right-aligned file sizes for consistent alignment
- Full-width highlight on selected row
- Styled text input for path entry
Debug mode: Debug files are now only created when --debug flag is used
- Removed unconditional debug file creation in TUI components