update notes import and export file type to jsonl

Changes the file type of notes exports to .jsonl (JSON Lines), which
is a more common format used by compatible wallets as specified in
BIP-329.

For example, exporting labels with Sparrow Wallet creates a .jsonl,
which would previously have to be renamed manually in order to allow
importing it in the BitBoxApp.

The supported import file types are updated accordingly, still allowing
.txt imports for exports created prior to this change.

Author: sutterseba

CHANGELOG.md

@@ -8,6 +8,7 @@
 - Introduce full screen selector for mobile in place of dropdown
 - Fix wrong estimated confirmation time for ERC20 tokens.
 - Enable unlock test wallet in testnet
+- Change notes export file type to JSON Lines
 
 # v4.47.2
 - Linux: fix compatiblity with some versions of Mesa that are incompatible with the bundled wayland libraries

backend/notes.go

@@ -158,7 +158,7 @@ func (backend *Backend) ExportNotes() error {
 	if err != nil {
 		return err
 	}
-	name := fmt.Sprintf("%s-notes.txt", time.Now().Format("2006-01-02-at-15-04-05"))
+	name := fmt.Sprintf("%s-notes.jsonl", time.Now().Format("2006-01-02-at-15-04-05"))
 	suggestedPath := filepath.Join(exportsDir, name)
 	path := backend.Environment().GetSaveFilename(suggestedPath)
 	if path == "" {

frontends/android/BitBoxApp/app/src/main/java/ch/shiftcrypto/bitboxapp/MainActivity.java

@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -352,13 +353,8 @@ public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathC
                 MainActivity.this.filePathCallback = filePathCallback;
                 String[] mimeTypes = fileChooserParams.getAcceptTypes();
                 String fileType = "*/*";
-                if (mimeTypes.length == 1) {
-                    // import notes form uses .txt file type, but is not supported here.
-                    if (".txt".equals(mimeTypes[0])) {
-                        fileType = "text/plain";
-                    } else if (MimeTypeMap.getSingleton().hasMimeType(mimeTypes[0])) {
-                        fileType = mimeTypes[0];
-                    }
+                if (mimeTypes.length == 1 && MimeTypeMap.getSingleton().hasMimeType(mimeTypes[0])) {
+                    fileType = mimeTypes[0];
                 }
                 mGetContent.launch(fileType);
                 return true;

frontends/web/src/routes/settings/components/appearance/notesImport.tsx

@@ -32,7 +32,7 @@ export const NotesImport = () => {
         type="file"
         className={style.fileInput}
         ref={fileInputRef}
-        accept=".txt"
+        accept=".jsonl,.txt"
         onChange={async (e: React.ChangeEvent<HTMLInputElement>) => {
           setImportDisabled(e.target.files === null || e.target.files.length === 0);
           if (fileInputRef.current === null) {