🐛 v1.2.1: Markdown Initial Export Bugfix + URL Normalization + GitHub Workflow Fix

## 🐛 Fixed
- Initial Markdown export: Existing notes now exported when Desktop Integration activated
- Markdown directory structure: Files now land correctly in /notes-md/
- JSON URL normalization: Smart detection for both Root-URL and /notes-URL
- GitHub release notes: Fixed language order (DE primary, EN collapsible) and emoji

## ✨ Improved
- Settings UI: Example URL shows /notes instead of /webdav
- Server config: Enter only base URL (app adds /notes/ and /notes-md/ automatically)
- Flexible URL input: Both http://server/ and http://server/notes/ work
- Changelogs: Shortened for F-Droid 500 char limit

## 🔧 Technical
- getNotesUrl() helper with smart /notes/ detection
- getMarkdownUrl() simplified to use getNotesUrl()
- All JSON operations updated to use normalized URLs
- exportAllNotesToMarkdown() with progress callback
- Workflow: Swapped CHANGELOG_DE/EN, replaced broken emoji with 🌍

versionCode: 6
versionName: 1.2.1

fastlane/metadata/android/en-US/changelogs/6.txt

@@ -0,0 +1,12 @@
+v1.2.1 - Initial Export + URL Normalization
+
+Bugfixes
+• Existing notes are now exported when Desktop Integration is enabled
+• Markdown files now correctly land in /notes-md/ folder
+• Simplified server config: Enter only base URL (e.g. http://server:8080/)
+• App automatically creates /notes/ and /notes-md/
+• Both URL variants work: with and without /notes
+
+Improvements
+• Example URL now shows /notes instead of /webdav
+• Progress dialog during export