feat(plex): classify collection-strip source (franchise/imdb/tmdb/smart)

Derive a `source` bucket per collection from the already-synced title + smart
flag (no schema change, no re-sync): external list providers (IMDb/TMDb/TVDb/
Trakt) by leading token, Plex smart lists via the smart flag, everything else a
genuine "collection". Returned on each info-page collection strip so the client
can show/hide each type independently. Adds the stripSource labels (en/hu/de).

backend/app/routes/plex.py

@@ -684,6 +684,22 @@ def person_image(u: str, _: User = Depends(current_user)) -> Response:
     return _img_response(r.content, ct)
 
 
+# Known external list providers that seed Plex collections (via plextraktsync et al). A collection's
+# "source" buckets the info-page strips so the user can show/hide each type independently (e.g. hide
+# the noisy 'IMDb Popular'/'TMDb Trending' auto-lists but keep genuine franchise collections). Derived
+# from the already-synced title/smart — no schema change, no re-sync. Unknown providers stay "collection".
+_STRIP_PROVIDERS = ("imdb", "tmdb", "tvdb", "trakt")
+
+
+def _collection_source(col: PlexCollection) -> str:
+    first = (col.title or "").strip().split(" ", 1)[0].lower()
+    if first in _STRIP_PROVIDERS:
+        return first
+    if col.smart:
+        return "smart"
+    return "collection"
+
+
 def _collection_strips(db: Session, it: PlexItem, user_id: int) -> list[dict]:
     """The collections this movie belongs to, each with its member titles (playable cards) — the
     'Avatar Collection' strip on the info page. Pure local lookup (no Plex call)."""
@@ -714,7 +730,14 @@ def _collection_strips(db: Session, it: PlexItem, user_id: int) -> list[dict]:
                 PlexState.user_id == user_id, PlexState.item_id.in_(ids or [0])
             )
         }
-        out.append({"id": rk, "title": col.title, "items": [_movie_card(m, states.get(m.id)) for m in members]})
+        out.append(
+            {
+                "id": rk,
+                "title": col.title,
+                "source": _collection_source(col),
+                "items": [_movie_card(m, states.get(m.id)) for m in members],
+            }
+        )
     return out
 
 

frontend/src/i18n/locales/de/plex.json

@@ -98,6 +98,14 @@
     "customize": "Ansicht anpassen",
     "prefArtBg": "Dezenter Hintergrund",
     "prefCast": "Besetzung",
+    "stripSource": {
+      "collection": "Sammlungen",
+      "imdb": "IMDb",
+      "tmdb": "TMDb",
+      "tvdb": "TVDb",
+      "trakt": "Trakt",
+      "smart": "Smart-Listen"
+    },
     "openImdb": "Bei IMDb öffnen",
     "director": "Regie",
     "cast": "Besetzung & Crew",

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

@@ -98,6 +98,14 @@
     "customize": "Customize view",
     "prefArtBg": "Faint backdrop",
     "prefCast": "Cast & crew",
+    "stripSource": {
+      "collection": "Collections",
+      "imdb": "IMDb",
+      "tmdb": "TMDb",
+      "tvdb": "TVDb",
+      "trakt": "Trakt",
+      "smart": "Smart lists"
+    },
     "openImdb": "Open on IMDb",
     "director": "Director",
     "cast": "Cast & crew",

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

@@ -98,6 +98,14 @@
     "customize": "Nézet testreszabása",
     "prefArtBg": "Halvány háttér",
     "prefCast": "Szereplők",
+    "stripSource": {
+      "collection": "Kollekciók",
+      "imdb": "IMDb",
+      "tmdb": "TMDb",
+      "tvdb": "TVDb",
+      "trakt": "Trakt",
+      "smart": "Smart listák"
+    },
     "openImdb": "Megnyitás az IMDb-n",
     "director": "Rendező",
     "cast": "Szereplők & stáb",

frontend/src/lib/api.ts

@@ -714,7 +714,9 @@ export interface PlexItemDetail {
   episode_number?: number | null;
   prev_id?: string | null;
   next_id?: string | null;
-  collections?: { id: string; title: string; items: PlexCard[] }[];
+  // `source` buckets the strip so each type can be shown/hidden independently on the info page:
+  // "collection" (genuine franchise), "imdb"/"tmdb"/"tvdb"/"trakt" (external auto-lists), "smart".
+  collections?: { id: string; title: string; source: string; items: PlexCard[] }[];
 }
 export interface PlexCollection {
   id: string;