feat(feed): the card menu carries the card's own actions

Right-click, long-press or Shift+F10 on a feed card offered only the
comfort-shelf pin; watched, saved, hidden and the progress reset were
reachable only by hovering or Tabbing through every card.

frontend/src/i18n/locales/en/card.json

@@ -19,5 +19,15 @@
   "stream": "stream",
   "views": "views",
   "info": "Details",
-  "noDescription": "No description"
+  "noDescription": "No description",
+  "menu": {
+    "label": "Video",
+    "markWatched": "Mark watched",
+    "unmarkWatched": "Mark unwatched",
+    "save": "Save for later",
+    "unsave": "Remove from saved",
+    "hide": "Hide",
+    "unhide": "Unhide",
+    "reset": "Clear watch progress"
+  }
 }

frontend/src/i18n/locales/hu/card.json

@@ -19,5 +19,15 @@
   "stream": "stream",
   "views": "megtekintés",
   "info": "Részletek",
-  "noDescription": "Nincs leírás"
+  "noDescription": "Nincs leírás",
+  "menu": {
+    "label": "Videó",
+    "markWatched": "Megnézettnek jelöl",
+    "unmarkWatched": "Megnézés visszavonása",
+    "save": "Mentés későbbre",
+    "unsave": "Törlés a mentettek közül",
+    "hide": "Elrejtés",
+    "unhide": "Megjelenítés",
+    "reset": "Nézési előzmény törlése"
+  }
 }