Seed all Pokemon species and add admin pagination

- Update fetch_pokeapi.py to import all 1025 Pokemon species instead of
  only those appearing in encounters
- Add paginated response for /pokemon endpoint with total count
- Add pagination controls to AdminPokemon page (First/Prev/Next/Last)
- Show current page and total count in admin UI
- Add bean for Pokemon forms support task
- Update UX improvements bean with route grouping polish item

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/src/app/api/pokemon.py

@@ -12,6 +12,7 @@ from app.schemas.pokemon import (
     BulkImportItem,
     BulkImportResult,
     EvolutionResponse,
+    PaginatedPokemonResponse,
     PokemonCreate,
     PokemonResponse,
     PokemonUpdate,
@@ -23,21 +24,35 @@ from app.schemas.pokemon import (
 router = APIRouter()
 
 
-@router.get("/pokemon", response_model=list[PokemonResponse])
+@router.get("/pokemon", response_model=PaginatedPokemonResponse)
 async def list_pokemon(
     search: str | None = Query(None),
     limit: int = Query(50, ge=1, le=500),
     offset: int = Query(0, ge=0),
     session: AsyncSession = Depends(get_session),
 ):
-    query = select(Pokemon)
+    # Build base query with optional search filter
+    base_query = select(Pokemon)
     if search:
-        query = query.where(
+        base_query = base_query.where(
             func.lower(Pokemon.name).contains(search.lower())
         )
-    query = query.order_by(Pokemon.national_dex).offset(offset).limit(limit)
-    result = await session.execute(query)
-    return result.scalars().all()
+
+    # Get total count
+    count_query = select(func.count()).select_from(base_query.subquery())
+    total = (await session.execute(count_query)).scalar() or 0
+
+    # Get paginated items
+    items_query = base_query.order_by(Pokemon.national_dex).offset(offset).limit(limit)
+    result = await session.execute(items_query)
+    items = result.scalars().all()
+
+    return PaginatedPokemonResponse(
+        items=items,
+        total=total,
+        limit=limit,
+        offset=offset,
+    )
 
 
 @router.post("/pokemon/bulk-import", response_model=BulkImportResult)