use public ticker for bot

Author: Haehnchen

src/profile/profile_service.ts

@@ -141,13 +141,22 @@ export class ProfileService {
   }
 
   /**
-   * Fetch ticker/market data for a pair
+   * Fetch ticker/market data for a pair using authenticated exchange
    */
   async fetchTicker(profileId: string, pair: string): Promise<MarketData> {
     const exchange = await this.getExchangeForProfile(profileId);
     return fetchMarketData(exchange, pair);
   }
 
+  /**
+   * Fetch ticker/market data using public (unauthenticated) exchange.
+   * Use this for watch mode bots that don't need authentication.
+   */
+  async fetchTickerPublic(exchangeName: string, pair: string): Promise<MarketData> {
+    const exchange = await this.exchangeInstanceService.getPublicExchange(exchangeName);
+    return fetchMarketData(exchange, pair);
+  }
+
   /**
    * Fetch open orders for a profile/pair
    */

src/strategy/bot_runner.ts

@@ -96,10 +96,11 @@ export class BotRunner {
   }
 
   private async runBot(bot: Bot, profile: Profile): Promise<void> {
-    const marketData = await this.profileService.fetchTicker(profile.id, bot.pair);
-
     const isWatchOnly = bot.mode === 'watch';
 
+    // Always use public exchange for ticker (no auth needed)
+    const marketData = await this.profileService.fetchTickerPublic(profile.exchange, bot.pair);
+
     // Execute strategy
     const signal = await this.strategyExecutor.executeStrategy(
       bot.strategy,