- Create doc/ folder for project documentation
- Add BPMN 2.0 XML diagram (torrent_streamer_business_process.bpmn)
- Add visual BPMN diagram (torrent_streamer_bpmn_diagram.png)
- Add detailed business process description (BUSINESS_PROCESS_DESCRIPTION.md)
- Add documentation index (doc/README.md)
- Document all major business processes: search, details, streaming, playback, error handling
- Include architecture comparison between main (MVC) and detailVC-mvvm (MVVM) branches
- Add visual legend and process flow explanations

Co-authored-by: openhands <openhands@all-hands.dev>

- Set minimum deployment target to iOS 12.0
- Add post_install script to enforce deployment target for all pods
- Exclude arm64 architecture for iOS simulator to prevent build issues
- Add comprehensive build instructions documentation

Co-authored-by: openhands <openhands@all-hands.dev>

- Switch from git source to official CocoaPods version (5.2.7)
- Add Swift module build settings for Kanna target
- Configure SWIFT_INSTALL_OBJC_HEADER and SWIFT_OBJC_INTERFACE_HEADER_NAME
- Set DEFINES_MODULE and SWIFT_VERSION for proper module generation
- Clean reinstall of all pods with updated configuration

This fixes the 'Could not build Objective-C module Kanna' error
and missing 'Kanna-Swift.h' header file issue.

Co-authored-by: openhands <openhands@all-hands.dev>