fix(windows): About window content invisible due to excessive padding

The desktop About window (420px wide) had 280px horizontal padding per
side, leaving negative content width. Win32 layout clips strictly, so
only the logo was visible. Reduced to 24px and removed the mobile-only
back button from the desktop window.

Also added .gitignore entries for build artifacts, debug logs, and
screenshot files.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Ralph Kuepper

.gitignore

@@ -6,6 +6,7 @@ _perry_failed_stubs.o
 
 # Compiled binaries
 mango
+Mango.exe
 app
 app_debug
 mango-android
@@ -47,7 +48,16 @@ Mango-orig
 mango-test
 res/
 __pycache__/
+__perry_js_bundle.js
 test-screenshots/
+test_app_nodb
+test_mango_lite
+test_widgets
+
+# Debug / dev files
+mango_debug.log
+layout_debug.txt
+screenshot*.png
 
 # Internal docs
 mango-product-spec.md

src/app.ts

@@ -1619,16 +1619,19 @@ buttonSetBordered(backBtn, 0);
 buttonSetTextColor(backBtn, moR, moG, moB, 1.0);
 if (mobile) setPadding(backBtn, 8, 4, 8, 4);
 
-const backRow = HStack(8, [backBtn, Spacer()]);
-if (!mobile) widgetSetHidden(backRow, 1);
-const infoBody = VStack(12, [
-  backRow,
+const infoBodyMobile = VStack(12, [
+  HStack(8, [backBtn, Spacer()]),
   infoHeaderCard,
   settingsHeader,
   infoSettingsCard,
 ]);
-const infoPadH = mobile ? 16 : 280;
-setPadding(infoBody, mobile ? 20 : 40, infoPadH, 32, infoPadH);
+const infoBody = mobile ? infoBodyMobile : VStack(12, [
+  infoHeaderCard,
+  settingsHeader,
+  infoSettingsCard,
+]);
+const infoPadH = mobile ? 16 : 24;
+setPadding(infoBody, mobile ? 20 : 28, infoPadH, 32, infoPadH);
 widgetMatchParentWidth(infoHeaderCard);
 widgetMatchParentWidth(infoSettingsCard);