fix(ai-pick): 不足3条时表格高度自适应，去掉固定height约束

- priceColor 方法重写：undefined/0 统一走 text_primary，不再委托 riseFallColor（避免 0 走 text_grey）
- 与 biz_firstpage 对应修改保持一致

entry/src/main/ets/ai-pick/AiPickMock.ets

@@ -40,32 +40,29 @@ export const MOCK_RAW_TABS: RawPickTabItem[] = [
     },
   },
 
-  // ── Tab 2：系统周期策略（type = 'system_period'）──────────────────
+  // ── Tab 2：只有1条数据的系统策略 ──────────────────
   {
     type: 'system_period',
     system_strategy: {
       system_strategy: {
         id: 'strat_002',
         strategy_name: '黑色系超跌反弹',
-        content: '铁矿石、螺纹钢跌幅已达技术支撑位，RSI 超卖信号显现',
+        content: '铁矿石跌幅已达技术支撑位，RSI 超卖信号显现',
         strategy_type: 'system_period',
         tag_list: ['反弹', '黑色系', '超卖'],
         white_img: 'https://s.thsi.cn/js/m/upload/yyzt/1721828556_3492.png',
         black_img: 'https://s.thsi.cn/js/m/upload/yyzt/1721828547_6904.png',
       },
-      detail_count: 3,
+      detail_count: 1,
       detail_list: [
         { contract: 'RB2510', market: '70', contract_name: '螺纹钢2510', main_contract_type: '1' },
-        { contract: 'I2509',  market: '70', contract_name: '铁矿石2509', main_contract_type: '1' },
-        { contract: 'HC2510', market: '70', contract_name: '热卷2510',   main_contract_type: '0' },
       ],
-      // 系统策略无自定义 DOUBLE 字段
       field_list: [],
       origin_result_list: [],
     },
   },
 
-  // ── Tab 3：自定义策略（type = 'custom_strategy'）──────────────────
+  // ── Tab 3：只有2条数据的自定义策略 ──────────────────
   {
     type: 'custom_strategy',
     custom_strategy: {
@@ -76,12 +73,10 @@ export const MOCK_RAW_TABS: RawPickTabItem[] = [
         strategy_type: 'custom_strategy',
         tag_list: ['季节性', '农产品'],
       },
-      detail_count: 4,
+      detail_count: 2,
       detail_list: [
         { contract: 'M2509',  market: '70', contract_name: '豆粕2509', main_contract_type: '1' },
-        { contract: 'RM2509', market: '70', contract_name: '菜粕2509', main_contract_type: '1' },
-        { contract: 'Y2509',  market: '70', contract_name: '豆油2509', main_contract_type: '1' },
-        { contract: 'OI2509', market: '70', contract_name: '菜油2509', main_contract_type: '1' },
+        { contract: 'RM2509', market: '70', contract_name: '菜粕2509', main_contract_type: '0' },
       ],
       field_list: [
         { key: '成交量', type: 'DOUBLE', unit: '手' },
@@ -90,8 +85,6 @@ export const MOCK_RAW_TABS: RawPickTabItem[] = [
       origin_result_list: [
         { '成交量': 986000, '持仓量': 3102000 },
         { '成交量': 324000, '持仓量': 1258000 },
-        { '成交量': 189000, '持仓量': 683000  },
-        { '成交量': 142000, '持仓量': 521000  },
       ],
     },
   },

entry/src/main/ets/ai-pick/AiPickNodeComponent.ets

@@ -536,7 +536,6 @@ export struct AiPickNodeComponent {
                     .maxFontSize(16)
                     .minFontSize(9)
                     .fontColor($r('app.color.text_primary'))
-                    .layoutWeight(1)
                     .maxLines(1)
                     .textOverflow({ overflow: TextOverflow.Ellipsis })
                   if (item.isMain) {
@@ -599,7 +598,6 @@ export struct AiPickNodeComponent {
           )
         }
         .width('100%')
-        .height(175)
       }
 
       // ── 一句话定制策略 ──────────────────────────────────────
@@ -622,7 +620,6 @@ export struct AiPickNodeComponent {
       })
     }
     .width('100%')
-    .height(369)
   }
 
   @Builder

entry/src/main/ets/market-ranking/MarketRankingNodeComponent.ets

@@ -612,9 +612,14 @@ export struct MarketRankingNodeComponent {
   }
 
   private priceColor(item: RankItem): Resource {
-    if (item.price === undefined || item.price_chg === undefined) {
+    if (item.price_chg === undefined) {
       return $r('app.color.text_primary');
     }
-    return riseFallColor(item.price_chg);
+    if (item.price_chg > 0) {
+      return $r('app.color.color_rise');
+    } else if (item.price_chg < 0) {
+      return $r('app.color.color_fall');
+    }
+    return $r('app.color.text_primary');
   }
 }