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docs/patterns/responsive-layout.md

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+# Responsive layout
+
+## TabBar placement
+
+- mobile portrait → bottom
+- tablet/desktop landscape → right-top / right-center / right-bottom
+
+## Testing matrix
+
+Минимум:
+- iOS dark / light
+- Android dark / light
+- VK iOS / VK Android
+- TG iOS / TG Android
+- Web desktop