Fix cash-only execution platform default to cash only when unset.

QuantPlatformKit and all equity platforms default cash_only_execution to true when the env var is missing; align console summary and effective-value logic with that behavior.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: Pigbibi

tests/strategy_switch_worker_validation.mjs

@@ -52,7 +52,8 @@ assert.ok(indexHtml.includes('class="reserve-policy-stack"'));
 assert.equal(indexHtml.match(/class="form-section dca-section"/g)?.length, 1);
 assert.ok(indexHtml.includes('qmtDryRunOnlyNote'));
 assert.ok(indexHtml.includes('optionOverlayDefaultSimple: "策略默认：开启"'));
-assert.ok(indexHtml.includes('cashOnlyExecutionDefault: "平台默认：允许融资"'));
+assert.ok(indexHtml.includes('cashOnlyExecutionDefault: "平台默认：仅用现金"'));
+assert.match(indexHtml, /function platformCashOnlyExecutionDefault\(\) \{\s+return true;/);
 assert.ok(indexHtml.includes("function effectiveOptionOverlayForAccount("));
 assert.ok(indexHtml.includes("function effectiveCashOnlyExecutionForAccount("));
 assert.ok(indexHtml.includes('cashOnlyExecutionValueYes: "允许融资：是"'));

web/strategy-switch-console/index.html

@@ -1789,7 +1789,7 @@ <h2 data-i18n="summary">切换摘要</h2>
         optionOverlayOn: "开启（策略默认）",
         optionOverlayDefaultSimple: "策略默认：开启",
         optionOverlayDefault: "策略默认：开启，{detail}",
-        cashOnlyExecutionDefault: "平台默认：允许融资",
+        cashOnlyExecutionDefault: "平台默认：仅用现金",
       },
       en: {
         appTitle: "Strategy Switch",
@@ -1955,7 +1955,7 @@ <h2 data-i18n="summary">切换摘要</h2>
         optionOverlayOn: "Enabled (strategy default)",
         optionOverlayDefaultSimple: "Strategy default: enabled",
         optionOverlayDefault: "Strategy default: enabled, {detail}",
-        cashOnlyExecutionDefault: "Platform default: margin allowed",
+        cashOnlyExecutionDefault: "Platform default: cash only",
       },
     };
 
@@ -2475,7 +2475,7 @@ <h2 data-i18n="summary">切换摘要</h2>
     }
 
     function platformCashOnlyExecutionDefault() {
-      return false;
+      return true;
     }
 
     function effectiveCashOnlyExecutionForAccount(platform, account) {