remove plan.md from repo

Merge pull request MSC72m#10 from MSC72m/feature/complete-media-downl…

…oader-enhancement

Media Downloader v1.0.0 — Complete release

Fix button state management in download coordinator

- Always call buttons callback with correct state (True/False) instead of only when enabling
- Fixes test failures where buttons callback wasn't called when downloads were still active
- Ensures buttons stay disabled during multiple downloads and are enabled only when all complete

Minor fixes:

updated README.md and added guide to install the app on windows with out installer.
removed unnessery dirs(guide dir moved to another branch to be used at a later time)
all tests were success full

Merge pull request MSC72m#3 from MSC72m/development

Development