Rewrite as Flutter app and rename to Quicklogmain

Drop the Go/Fyne implementation and replace it with a native Flutter app
targeting Android (primary) and Linux desktop (development). Rename
quicklogger -> quicklog throughout (project, applicationId, MethodChannel,
cache filename, AppBar title, Linux binary).

Storage on Android moves to /Android/data/org.buetow.quicklog/files/ so
MANAGE_EXTERNAL_STORAGE is no longer required. Share-intent receive is
preserved via a Kotlin ShareActivity that writes shared text to the app
cache, which Dart reads through a MethodChannel on app resume; MainActivity
also accepts SEND directly so launchers that prefer the main target work.

New since the Fyne version: an entry browser screen with read-only viewer
and long-press delete.

Cross-compiling to Android ARM from amd64 Linux no longer needs Docker /
fyne-cross / NDK -- flutter build apk emits ARM binaries directly.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

1 files changed, 34 insertions, 3 deletions

diff --git a/.gitignore b/.gitignore
index 2c12244..a9b77fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,34 @@
-fyne-cross
-quicklogger
-tmp-pkg
+# Dart / Flutter
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+build/
+.dart_tool/
+pubspec.lock.bak
+
+# IDE
+.idea/
+*.iml
+*.ipr
+*.iws
+.vscode/
+
+# Android
+android/.gradle/
+android/local.properties
+android/captures/
+android/.cxx/
+android/key.properties
+*.jks
+*.keystore
+
+# Linux
+linux/flutter/ephemeral/
+
+# Misc
+.DS_Store
+.claude/
+.serena/