fix(performers): szukanie po aliasach i w odwrotnej kolejnosci slow

Zgloszenie 436121fb: "Takase Rina" (japonska kolejnosc) nie znajdowalo
"Rina Takase" (15 scen) i wygladalo, jakby jej nie bylo. Wyszukiwanie
patrzy teraz na podciag nazwy albo aliasu, dla dwoch slow tez w odwrotnej
kolejnosci; trafienia w nazwie ida przed trafieniami tylko w aliasie.
Obie kolumny maja indeksy trigramowe, 0,2 do 1,1 s w sandboksie.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/api/taxonomies.py

@@ -15,14 +15,14 @@ from typing import Annotated
 
 from fastapi import APIRouter, Depends, HTTPException, Query
 from pydantic import BaseModel, ConfigDict
-from sqlalchemy import and_, exists, func, select
+from sqlalchemy import and_, case, exists, func, or_, select
 from sqlalchemy.orm import Session
 
 from app.auth import require_api_key
 from app.db import get_session
 from app.models.movie import Movie, MovieTag
 from app.models.movie_playback_source import MoviePlaybackSource
-from app.models.performer import Performer
+from app.models.performer import Performer, PerformerAlias
 from app.models.playback_source import PlaybackSource
 from app.models.scene import ScenePerformer, SceneTag
 from app.models.studio import Studio
@@ -30,6 +30,37 @@ from app.models.tag import Tag
 from app.models.tag_vertical_count import TagVerticalCount
 from app.verticals import VERTICALS
 
+
+def _performer_name_patterns(q: str) -> list[str]:
+    qn = " ".join(q.lower().split())
+    pats = [f"%{qn}%"]
+    words = qn.split(" ")
+    if len(words) == 2:
+        pats.append(f"%{words[1]} {words[0]}%")
+    return pats
+
+
+def _performer_name_rank(q: str):
+    """0 = trafienie w nazwie, 1 = tylko w aliasie; sortujemy po tym przed liczba scen,
+    inaczej "anna" dawalo na gorze duze nazwiska z aliasem "Adrianna"."""
+    return case((or_(*[Performer.name_normalized.ilike(p) for p in _performer_name_patterns(q)]), 0), else_=1)
+
+
+def _performer_name_clause(q: str):
+    """Szukanie wykonawcy: podciag nazwy ALBO aliasu, a dla dwoch slow tez w odwrotnej
+    kolejnosci. Zgloszenie 436121fb: "Takase Rina" (japonska kolejnosc) nie znajdowalo
+    "Rina Takase" i wygladalo, jakby jej nie bylo. Obie kolumny maja indeksy trigramowe."""
+    pats = _performer_name_patterns(q)
+    return or_(
+        *[Performer.name_normalized.ilike(p) for p in pats],
+        exists(
+            select(1).where(
+                PerformerAlias.performer_id == Performer.id,
+                or_(*[PerformerAlias.alias_normalized.ilike(p) for p in pats]),
+            )
+        ),
+    )
+
 log = logging.getLogger(__name__)
 
 router = APIRouter(tags=["taxonomies"], dependencies=[Depends(require_api_key)])
@@ -294,14 +325,15 @@ def list_performers(
             .join(v_count, v_count.c.performer_id == Performer.id)
         )
         if q:
-            base = base.where(Performer.name_normalized.ilike(f"%{q.lower()}%"))
+            base = base.where(_performer_name_clause(q))
         total = session.execute(
             select(func.count()).select_from(base.subquery())
         ).scalar_one()
+        rank = [_performer_name_rank(q)] if q else []
         if order in ("scene_count", "popular"):
-            ordered = base.order_by(v_count.c.c.desc(), Performer.canonical_name.asc())
+            ordered = base.order_by(*rank, v_count.c.c.desc(), Performer.canonical_name.asc())
         else:
-            ordered = base.order_by(Performer.canonical_name.asc())
+            ordered = base.order_by(*rank, Performer.canonical_name.asc())
         rows = session.execute(
             ordered.offset((page - 1) * per_page).limit(per_page)
         ).all()
@@ -323,18 +355,19 @@ def list_performers(
     # 3M scene_performers + EXISTS playback per-request. Patrz migracja 0019.
     base = select(Performer)
     if q:
-        base = base.where(Performer.name_normalized.ilike(f"%{q.lower()}%"))
+        base = base.where(_performer_name_clause(q))
 
     total = session.execute(
         select(func.count()).select_from(base.subquery())
     ).scalar_one()
 
+    rank = [_performer_name_rank(q)] if q else []
     if order in ("scene_count", "popular"):
         ordered = base.order_by(
-            Performer.scene_count.desc(), Performer.canonical_name.asc()
+            *rank, Performer.scene_count.desc(), Performer.canonical_name.asc()
         )
     else:
-        ordered = base.order_by(Performer.canonical_name.asc())
+        ordered = base.order_by(*rank, Performer.canonical_name.asc())
 
     perfs_page = session.execute(
         ordered.offset((page - 1) * per_page).limit(per_page)