feat: add Super Alpha research, management and MCP workflows

backend/app/schemas.py

@@ -69,6 +69,7 @@ class PreferencesInput(Contract):
 
 
 class AlphaFilters(Contract):
+    management_scope: Literal["super", "non_super"] | None = None
     local_correlation_status: Literal["not_cached", "stale", "low", "high", "partial", "insufficient_data"] | None = None
     local_correlation_min: float | None = Field(default=None, ge=-1, le=1)
     local_correlation_max: float | None = Field(default=None, ge=-1, le=1)
@@ -237,6 +238,9 @@ class AlphaSummary(BaseModel):
     id: str
     name: str | None
     expression_preview: str
+    selection_preview: str = ""
+    combo_preview: str = ""
+    component_count: int | None = None
     alpha_type: str | None
     language: str | None
     stage: str | None