feat(plex): actor filter AND/OR toggle (default OR) (S2)

Multiple selected actors now combine as OR (any) by default — click several cast
and see films featuring ANY of them — instead of the old hardcoded AND that
emptied the grid. An AND (all) toggle in the ACTIVE filter section (shown for 2+
actors, mirroring the genre match toggle) narrows to films with ALL of them.
Backend actor_mode param mirrors genre_mode. Verified: OR John Goodman|Douglas
M. Griffin = 11 films; AND = 1 (10 Cloverfield Lane). (Plex cast-explore S2)

backend/app/routes/plex.py

@@ -373,8 +373,10 @@ def _meta_filter_conds(model, p: dict) -> list:
         conds.append(model.added_at >= cutoff)
     for d in _csv(p.get("directors")):  # AND
         conds.append(model.directors.contains([d]))
-    for a in _csv(p.get("actors")):  # AND
-        conds.append(model.cast_names.contains([a]))
+    alist = _csv(p.get("actors"))
+    if alist:  # AND (all) or OR (any) — default OR, mirroring genre_mode
+        ac = [model.cast_names.contains([a]) for a in alist]
+        conds.append(and_(*ac) if p.get("actor_mode") == "all" else or_(*ac))
     stds = _csv(p.get("studios"))
     if stds:  # OR
         conds.append(model.studio.in_(stds))
@@ -405,6 +407,7 @@ class LibraryFilters:
     added_within: str | None = None
     directors: str | None = None
     actors: str | None = None
+    actor_mode: str = "any"  # how multiple actors combine: any (OR, default) | all (AND)
     studios: str | None = None
     collection: str | None = None
 
@@ -415,7 +418,8 @@ class LibraryFilters:
             "year_max": self.year_max, "rating_min": self.rating_min,
             "duration_min": self.duration_min, "duration_max": self.duration_max,
             "added_within": self.added_within, "directors": self.directors,
-            "actors": self.actors, "studios": self.studios, "collection": self.collection,
+            "actors": self.actors, "actor_mode": self.actor_mode,
+            "studios": self.studios, "collection": self.collection,
         }
 
 

frontend/src/components/PlexSidebar.tsx

@@ -211,6 +211,23 @@ export default function PlexSidebar({
                     onRemove={() => patch({ directors: filters.directors.filter((x) => x !== d) })}
                   />
                 ))}
+                {filters.actors.length > 1 && (
+                  <div className="w-full inline-flex overflow-hidden rounded-lg border border-border text-[11px]">
+                    {(["any", "all"] as const).map((m) => (
+                      <button
+                        key={m}
+                        onClick={() => patch({ actorMode: m })}
+                        className={`px-2 py-0.5 transition ${
+                          (filters.actorMode ?? "any") === m
+                            ? "bg-accent text-accent-fg"
+                            : "text-muted hover:bg-surface"
+                        }`}
+                      >
+                        {t(`plex.filter.match.${m}`)}
+                      </button>
+                    ))}
+                  </div>
+                )}
                 {filters.actors.map((a) => (
                   <RemovableChip
                     key={`a:${a}`}

frontend/src/lib/api.ts

@@ -840,7 +840,8 @@ export interface PlexFilters {
   durationMax?: number | null;
   addedWithin?: string; // "" | "24h" | "1w" | "1m" | "6m" | "1y"
   directors: string[]; // AND — titles featuring ALL selected
-  actors: string[]; // AND — titles featuring ALL selected
+  actors: string[]; // OR (any) by default, or AND (all) via actorMode
+  actorMode?: "any" | "all"; // how multiple actors combine (default any = OR)
   studios: string[]; // OR — from any selected studio
   collection?: string | null; // a single Plex collection (rating_key)
   collectionTitle?: string | null; // its title, for the active-filter chip
@@ -882,6 +883,7 @@ function appendPlexFilters(u: URLSearchParams, f: PlexFilters): void {
   if (f.addedWithin) u.set("added_within", f.addedWithin);
   if (f.directors?.length) u.set("directors", f.directors.join(","));
   if (f.actors?.length) u.set("actors", f.actors.join(","));
+  if (f.actorMode === "all") u.set("actor_mode", "all");
   if (f.studios?.length) u.set("studios", f.studios.join(","));
   if (f.collection) u.set("collection", f.collection);
 }