feat(social): add listening activity, shared rooms and modern chat

services/recommender/pipu_rec/wave/service.py

@@ -38,6 +38,7 @@ class BatchRequest(BaseModel):
     mood: str | None = None
     seed: Seed | None = None
     exclude_ids: list[str] = Field(default_factory=list, max_length=1000)
+    friend_track_ids: list[str] = Field(default_factory=list, max_length=30)
     feedback: list[Feedback] = Field(default_factory=list, max_length=200)
     n: int = Field(default=5, ge=1, le=20)
 
@@ -93,6 +94,7 @@ class WaveService:
             n=req.n,
             exclude=set(req.exclude_ids),
             seed_ids=seeds,
+            friend_ids=req.friend_track_ids,
             rng=np.random.default_rng(),
             ranker=ranker,
             ctx=Context(has_activity=bool(req.activity), has_mood=bool(req.mood)),