Refresh screenshot galleries and repair portal upgrades

Use the September 30 hero on the website and README, add a shared screenshot gallery, and remove the old showcase images. Build image links locally and clean generated site output. Back up the known development portal override during installation and report custom overrides before building. Keep source selections clear while letting blur show through unselected rows.
2026-09-30 13:50:06 +01:00
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+# Screenshots
+
+Captured on September 30, 2026. Select an image to view it at full size.
+
+## Ferese Blue
+
+Settings and Control Center with the default wallpaper.
+
+[![Settings and Control Center with the default wallpaper.](images/screenshots/ferese-main-hero.png)](images/screenshots/ferese-main-hero.png)
+
+## Rosé Pine
+
+Theme previews, Control Center and the desktop clock.
+
+[![Theme previews, Control Center and the desktop clock.](images/screenshots/rose-pine-desktop.png)](images/screenshots/rose-pine-desktop.png)
+
+## Workspace overview
+
+Windows and workspaces over a custom wallpaper.
+
+[![Windows and workspaces over a custom wallpaper.](images/screenshots/rose-pine-overview.png)](images/screenshots/rose-pine-overview.png)
+
+## Power controls
+
+Power profiles and restart, power off and suspend actions.
+
+[![Power profiles and restart, power off and suspend actions.](images/screenshots/power-controls.png)](images/screenshots/power-controls.png)
+
+## Ferese Blue overview
+
+Application previews and workspace selection.
+
+[![Application previews and workspace selection.](images/screenshots/ferese-blue-overview.png)](images/screenshots/ferese-blue-overview.png)
+
+## Shortcut guide
+
+The login guide shows the configured keyboard shortcuts.
+
+[![The login guide shows the configured keyboard shortcuts.](images/screenshots/shortcut-guide.png)](images/screenshots/shortcut-guide.png)
+
+## Power confirmation
+
+A centered confirmation dialog with background blur.
+
+[![A centered confirmation dialog with background blur.](images/screenshots/power-confirmation.png)](images/screenshots/power-confirmation.png)