Add ProofLine criteria documentation and Strategy Catalog v1 implementation

- Add acceptance criteria documentation (AC-0013 through AC-0023)
- Add Line-0003 discovery documentation
- Implement Strategy Catalog v1 with new database migration
- Update portfolio API endpoints and schemas
- Refactor strategy and portfolio services
- Add strategy management CLI commands
- Update domain models with strategy catalog support
- Add comprehensive tests for v1 strategies
- Update design documentation (data model, interfaces, runtime flows)

app/api/portfolios.py

@@ -25,12 +25,17 @@ from app.schemas.portfolio import (
     UpdatePortfolioRequest,
 )
 from app.services.portfolio_service import PortfolioService
+from app.services.strategy_set_service import StrategyInactiveError, StrategyNotFoundError
 
 router = APIRouter(prefix="/portfolios", tags=["portfolios"])
 
 
-def _raise_portfolio_error(exc: ValueError) -> None:
+def _raise_portfolio_error(exc: ValueError) -> NoReturn:
     detail = str(exc)
+    if isinstance(exc, StrategyNotFoundError):
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=detail) from exc
+    if isinstance(exc, StrategyInactiveError):
+        raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail=detail) from exc
     if "이미 연결된 태그입니다" in detail:
         raise HTTPException(status_code=status.HTTP_409_CONFLICT, detail=detail) from exc
     if "찾을 수 없습니다" in detail:
@@ -151,6 +156,8 @@ def create_portfolio(
         if _ownership_required(settings):
             owner_user_id = _require_owner_context(auth_context)
         return service.create_portfolio(payload, owner_user_id=owner_user_id)
+    except ValueError as exc:
+        _raise_portfolio_error(exc)
     finally:
         _close_repository(repository)
 
@@ -169,6 +176,8 @@ def update_portfolio(
         if _ownership_required(settings):
             _ensure_portfolio_owned(repository, portfolio_id, auth_context)
         return service.update_portfolio(portfolio_id, payload)
+    except ValueError as exc:
+        _raise_portfolio_error(exc)
     finally:
         _close_repository(repository)