Retry OCR on upscaled images when nothing is read

Tiny UI text (around 7pt) reads as nothing at native size — verified
locally. When a pass returns fewer than three characters, OCR retries at
2x and 3x and keeps the fullest result. The smoke test covers a tiny-text
case so the fallback stays working.

💘 Generated with Crush

Assisted-by: Crush:deepseek-v4-flash-0731

build-app.sh

@@ -108,9 +108,9 @@ cat > "$APP/Contents/Info.plist" <<'PLIST'
     <key>CFBundleIconFile</key>
     <string>Icon</string>
     <key>CFBundleShortVersionString</key>
-    <string>1.10.1</string>
+    <string>1.10.2</string>
     <key>CFBundleVersion</key>
-    <string>101</string>
+    <string>102</string>
     <key>LSUIElement</key>
     <true/>
     <key>NSHighResolutionCapable</key>