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, 57 insertions, 0 deletions

diff --git a/lib/services/shared_text_handler.dart b/lib/services/shared_text_handler.dart
new file mode 100644
index 0000000..c8e99a4
--- /dev/null
+++ b/lib/services/shared_text_handler.dart
@@ -0,0 +1,57 @@
+enum SharedTextLoadMode { prefill, autoLog }
+
+class SharedTextDecision {
+  const SharedTextDecision({required this.mode, required this.text, required this.proceed});
+  final SharedTextLoadMode mode;
+  final String text;
+  final bool proceed;
+}
+
+SharedTextDecision prepareSharedTextLoad(String text, bool autoLog) {
+  if (text.trim().isEmpty) {
+    return const SharedTextDecision(mode: SharedTextLoadMode.prefill, text: '', proceed: false);
+  }
+  return SharedTextDecision(
+    mode: autoLog ? SharedTextLoadMode.autoLog : SharedTextLoadMode.prefill,
+    text: text,
+    proceed: true,
+  );
+}
+
+typedef LogFn = Future<void> Function(String dir, String text);
+typedef ShowInfo = void Function(String title, String message);
+typedef ShowError = void Function(Object error);
+
+Future<void> handleSharedTextLoad({
+  required String text,
+  required bool autoLog,
+  required String dir,
+  required void Function(String) prefill,
+  required void Function() focus,
+  required void Function() resetInput,
+  required Future<void> Function() clearCache,
+  required LogFn logFn,
+  required ShowInfo showInfo,
+  required ShowError showError,
+}) async {
+  final decision = prepareSharedTextLoad(text, autoLog);
+  if (!decision.proceed) {
+    await clearCache();
+    return;
+  }
+  if (decision.mode == SharedTextLoadMode.autoLog) {
+    try {
+      await logFn(dir, decision.text);
+    } catch (e) {
+      showError(e);
+      return;
+    }
+    showInfo('Logged', 'Shared text has been logged.');
+    resetInput();
+    await clearCache();
+    return;
+  }
+  prefill(decision.text);
+  focus();
+  await clearCache();
+}