Multiple minor changes and improvements

src/lib/backup.test.js

@@ -49,7 +49,7 @@ describe('buildBackup', () => {
   });
 
   it('names the file by date', () => {
-    expect(backupFilename(at('2026-09-06', '12:00'))).toBe('timelog-2026-09-06.json');
+    expect(backupFilename(at('2026-09-06', '12:00'))).toBe('pardis-2026-09-06.json');
   });
 });
 
@@ -78,7 +78,7 @@ describe('parseBackup rejects what it should', () => {
   });
 
   it('refuses a JSON file that is not ours', () => {
-    expect(() => parseBackup('{"hello":"world"}')).toThrow(/pas un export TimeLog/);
+    expect(() => parseBackup('{"hello":"world"}')).toThrow(/pas un export Pardis/);
   });
 
   it('refuses a bare array', () => {