fix(strategy-switch): add default_strategy_profile fallback in resolveCurrentStrategyForAccount

When no GitHub variables are readable (token lacks repo access), fall back to
the default_strategy_profile from account options KV. This ensures platforms
like firstrade, binance, and qmt always show a default strategy.

Also updates KV account_options to include:
- IBKR 4th account u18308207 (global_etf_rotation)
- firstrade with explicit matching fields (service_name, account_scope, etc.)
- binance and qmt default account options

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Pigbibi

web/strategy-switch-console/worker.js

@@ -858,6 +858,25 @@ async function resolveCurrentStrategyForAccount({ platform, option, optionsCount
     };
   }
 
+  // Fallback: use default_strategy_profile from account options when
+  // no GitHub variables can be read (e.g. token lacks repo access).
+  const defaultProfile = cleanCurrentStrategy(option?.default_strategy_profile);
+  if (defaultProfile) {
+    return {
+      strategy_profile: defaultProfile,
+      ...reservedCashPayload,
+      ...incomeLayerPayload,
+      ...optionOverlayPayload,
+      ...runtimeTargetEnabledPayload,
+      ...dcaPayloadForProfile(defaultProfile, dcaPayload),
+      ...ibitZscoreExitPayloadForProfile(defaultProfile, ibitZscorePayload),
+      ...cashOnlyPayload,
+      source: "ACCOUNT_OPTIONS_DEFAULT",
+      variable_scope: variableScope,
+      github_environment: githubEnvironment || "",
+    };
+  }
+
   return null;
 }