refactor(selection): drop residual concept-sector surface from sub-industry path

- remove the sector_type parameter from the selection port, adapter, and
  use case; the adapter now passes SectorType.INDUSTRY directly, deleting
  the dead concept vocabulary mapping
- stop parsing concepts/concept_total/concept_limit from the sector-radar
  membership response in the web API layer and narrow the response type to
  industries only
- update tests and the task PRD accordingly; backend pyright errors drop
  from the 16 baseline to 14

zhixing-server/src/zhixing_server/modules/selection/application/run.py

@@ -646,11 +646,7 @@ class RunZhixingB1:
 
         if self.sector_reader is None:
             return None
-        return self.sector_reader.sector_member_codes(
-            target_trade_date,
-            sector_code,
-            sector_type="industry",
-        )
+        return self.sector_reader.sector_member_codes(target_trade_date, sector_code)
 
     def list_sector_counts(
         self,
@@ -684,11 +680,7 @@ class RunZhixingB1:
 
         if self.sector_reader is None or not stock_codes:
             return SelectionSectorMembership(snapshot_trade_date=None, sector_counts=())
-        return self.sector_reader.sector_counts(
-            stock_codes,
-            target_trade_date,
-            sector_type="industry",
-        )
+        return self.sector_reader.sector_counts(stock_codes, target_trade_date)
 
 
 def _to_item(

zhixing-server/src/zhixing_server/modules/selection/domain/runs.py

@@ -66,16 +66,12 @@ class SelectionSectorReader(Protocol):
         self,
         stock_codes: Sequence[str],
         target_trade_date: date,
-        *,
-        sector_type: str = "industry",
     ) -> SelectionSectorMembership: ...
 
     def sector_member_codes(
         self,
         target_trade_date: date,
         sector_code: str,
-        *,
-        sector_type: str = "industry",
     ) -> tuple[str, ...]: ...
 
 

zhixing-server/src/zhixing_server/modules/selection/infrastructure/sector_membership.py

@@ -2,7 +2,8 @@
 
 The selection context owns no sector-membership storage. This adapter keeps
 the port contract local to selection while delegating point-in-time reads to
-the sector-radar application service in the composition root.
+the sector-radar application service in the composition root. Selection only
+speaks the sub-industry vocabulary, so the radar sector type is fixed here.
 """
 
 from __future__ import annotations
@@ -17,20 +18,6 @@ from zhixing_server.modules.selection.domain.runs import (
     SelectionSectorMembership,
 )
 
-SELECTION_SECTOR_TYPES: dict[str, SectorType] = {
-    "concept": SectorType.CONCEPT,
-    "industry": SectorType.INDUSTRY,
-}
-
-
-def _sector_type(value: str) -> SectorType:
-    """Map the public sector-type vocabulary onto the radar domain enum."""
-
-    try:
-        return SELECTION_SECTOR_TYPES[value]
-    except KeyError:
-        raise ValueError(f"unsupported sector type: {value}") from None
-
 
 class SectorRadarSelectionReader:
     """Resolve selection sector aggregates through the sector-radar context."""
@@ -42,15 +29,13 @@ class SectorRadarSelectionReader:
         self,
         stock_codes: Sequence[str],
         target_trade_date: date,
-        *,
-        sector_type: str = "industry",
     ) -> SelectionSectorMembership:
         """Return per-sector stock counts for one run's selected stocks."""
 
         snapshot = self._reader.sector_counts(
             stock_codes,
             target_trade_date,
-            sector_type=_sector_type(sector_type),
+            sector_type=SectorType.INDUSTRY,
         )
         return SelectionSectorMembership(
             snapshot_trade_date=snapshot.trade_date,
@@ -68,17 +53,15 @@ class SectorRadarSelectionReader:
         self,
         target_trade_date: date,
         sector_code: str,
-        *,
-        sector_type: str = "industry",
     ) -> tuple[str, ...]:
         """Return one sector's member stock codes on the aligned snapshot."""
 
         snapshot = self._reader.sector_member_codes(
             target_trade_date,
             sector_code,
-            sector_type=_sector_type(sector_type),
+            sector_type=SectorType.INDUSTRY,
         )
         return snapshot.stock_codes
 
 
-__all__ = ["SELECTION_SECTOR_TYPES", "SectorRadarSelectionReader"]
+__all__ = ["SectorRadarSelectionReader"]