feat: add Atlas native app UX overhaul

Docs/ATTRIBUTION.md

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+# Attribution
+
+## Product Branding Rule
+
+Atlas for Mac is an independent product and does not use the Mole brand in user-facing naming.
+
+## Upstream Acknowledgement
+
+The project acknowledges the open-source project `Mole` by `tw93 and contributors` as an upstream inspiration and potential source of reused or adapted code.
+
+## User-Facing Copy
+
+Recommended acknowledgement copy:
+
+> Atlas for Mac includes software derived from the open-source project Mole by tw93 and contributors, used under the MIT License. Atlas for Mac is an independent product and is not affiliated with or endorsed by the original authors.
+
+## Placement
+
+- `Settings > Acknowledgements`
+- `About > Open Source`
+- repository-level third-party notice files
+- release bundle notice materials
+
+## Maintenance Rule
+
+If upstream-derived code is shipped, keep the copyright notice and MIT license text available in distributed materials.