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-web/src/features/sector-radar/api/sector-radar.api.test.ts

@@ -290,12 +290,6 @@ describe("stock sector membership adapter", () => {
     requested_trade_date: "2026-08-28",
     trade_date: "2026-08-28",
     industries: [{ code: "BK0901.DC", name: "银行" }],
-    concepts: [
-      { code: "BK0001.DC", name: "机器人" },
-      { code: "BK0002.DC", name: "人工智能" },
-    ],
-    concept_total: 2,
-    concept_limit: 20,
   }
 
   it("requests the snake-case endpoint and validates the payload", async () => {
@@ -316,8 +310,6 @@ describe("stock sector membership adapter", () => {
       status: "no_data",
       trade_date: null,
       industries: [],
-      concepts: [],
-      concept_total: 0,
     })
 
     const result = await getStockSectorMembership("000001.SZ", "2026-08-28")

zhixing-web/src/features/sector-radar/api/sector-radar.api.ts

@@ -153,7 +153,7 @@ export function parseRadarRankingsResponse(
 }
 
 /**
- * Fetch one stock's industries and concepts from the last-good build snapshot.
+ * Fetch one stock's sub-industries from the last-good build snapshot.
  *
  * @param tsCode - Stock code such as `000001.SZ`.
  * @param tradeDate - Requested trade date; the backend answers with the
@@ -193,19 +193,6 @@ export function parseStockSectorMembershipResponse(
     ),
     trade_date: readNullableDate(record.trade_date, "membership.trade_date"),
     industries: readSectorRefs(record.industries, "membership.industries"),
-    concepts: readSectorRefs(record.concepts, "membership.concepts"),
-    concept_total: readIntegerInRange(
-      record.concept_total,
-      0,
-      Number.MAX_SAFE_INTEGER,
-      "membership.concept_total",
-    ),
-    concept_limit: readIntegerInRange(
-      record.concept_limit,
-      1,
-      100,
-      "membership.concept_limit",
-    ),
   }
 }
 

zhixing-web/src/features/sector-radar/api/sector-radar.query.ts

@@ -31,7 +31,7 @@ export const stockSectorMembershipQueryKey = (
   ] as const
 
 /**
- * Read one stock's point-in-time industries and concepts for a detail view.
+ * Read one stock's point-in-time sub-industries for a detail view.
  *
  * Disabled until both the stock code and target trade date are known; the
  * query stays cached per code-date pair so switching selections refetches

zhixing-web/src/features/sector-radar/api/sector-radar.types.ts

@@ -128,9 +128,6 @@ export interface StockSectorMembershipResponse {
   requested_trade_date: string
   trade_date: string | null
   industries: StockSectorRef[]
-  concepts: StockSectorRef[]
-  concept_total: number
-  concept_limit: number
 }
 
 export interface RadarSectorQuery {