Merge origin/master into agent/stalker-smart-discovery

.changes/playback-external-launch-feedback.md

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+---
+type: fix
+area: playback
+---
+
+MPV and VLC recovery actions now stay available, show precise opening, started, playing, and failure feedback, and prevent overlapping launches. The dock keeps Stop available when teardown is still needed and lets terminal errors be dismissed.

.changes/ui-live-row-vertical-actions.md

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+---
+type: feature
+area: ui
+issues: [1128]
+---
+
+Live channel rows now stack their action buttons vertically — favorite on
+top, programme info below — so the extra button costs no horizontal space.
+The programme-info button is now also available in the Xtream and Stalker
+channel sidebars, and its slot stays reserved while EPG data loads, so
+buttons never jump.

.changes/xtream-catchup-indicator.md

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+---
+type: feature
+area: xtream
+issues: [1128]
+---
+
+Live channels with provider catch-up now show a small archive badge — in the
+channel sidebar next to the channel name, on the "all channels" grid cards,
+and in the favorites and recently-viewed lists (including global favorites).
+Hovering it shows the catch-up window in days.

.changes/xtream-infinite-scroll-catalog.md

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+---
+type: feature
+area: xtream
+---
+
+Xtream movie, series, and live catalogs now load continuously as you scroll
+instead of flipping through pages — more items appear automatically as you near
+the bottom, and taller windows fill themselves on open. Opening a title and
+going back returns you to the exact spot in the list. In-category search and
+the in-portal search results follow the same continuous style.