feat(feed): add the small-card, compact-row and tile views

Tiles answer the row view's wasted space: the actions move under the meta
into vertical slack the thumbnail already reserves, which frees ~168px of
width, so the block survives in a narrow column and the list can go
multi-column. Rows stay single-column on purpose — reading down one edge
is why that view exists.

The column count now comes from a per-view minimum width, so every
multi-column view reflows on the mechanism the card grid already used.

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

@@ -22,7 +22,10 @@
   "viewLabel": "View",
   "view": {
     "cards": "Large cards",
-    "rows": "Rows"
+    "cardsSmall": "Small cards",
+    "rows": "Rows",
+    "rowsCompact": "Compact rows",
+    "tiles": "Tiles"
   },
   "dirAsc": "Ascending",
   "dirDesc": "Descending",

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

@@ -22,7 +22,10 @@
   "viewLabel": "Nézet",
   "view": {
     "cards": "Nagy kártya",
-    "rows": "Sor"
+    "cardsSmall": "Kis kártya",
+    "rows": "Sor",
+    "rowsCompact": "Tömör sor",
+    "tiles": "Csempe"
   },
   "dirAsc": "Növekvő",
   "dirDesc": "Csökkenő",