fix: extract primary key when multiple API keys are configured

When multiple API keys are stored as comma-separated string (e.g., "key1,key2"),
the model fetcher and aionrs agent now extract the first valid key instead of
passing the entire string as a single API key.

- Add primary_key() helper in fetchers.rs to extract first valid key
- Use primary_key in fetch_for_platform for all platform fetchers
- Extract first valid key in aionrs agent initialization

Author: zhangyapu1

crates/aionui-ai-agent/src/manager/aionrs/agent.rs

@@ -66,7 +66,18 @@ impl AionrsAgentManager {
 
         let cli_args = CliArgs {
             provider: Some(config_extra.provider.clone()),
-            api_key: Some(config_extra.api_key.clone()),
+            // When multiple keys are stored as comma-separated string,
+            // use the first valid key for the aionrs engine.
+            // Full key rotation on failure is handled at a higher layer.
+            api_key: Some(
+                config_extra
+                    .api_key
+                    .split([',', '\n'])
+                    .map(|s| s.trim())
+                    .find(|s| !s.is_empty())
+                    .unwrap_or(&config_extra.api_key)
+                    .to_owned(),
+            ),
             base_url: config_extra.base_url.clone(),
             model: Some(config_extra.model.clone()),
             max_tokens: Some(config_extra.max_tokens),

crates/aionui-system/src/model_fetcher/fetchers.rs

@@ -9,20 +9,32 @@ use super::FetchConfig;
 
 const REQUEST_TIMEOUT: Duration = Duration::from_secs(30);
 
+/// Extract the first API key from a potentially comma/newline-separated string.
+/// If the input contains multiple keys (e.g., "key1,key2"), only the first one
+/// is used for fetching the model list.
+fn primary_key(api_key: &str) -> &str {
+    api_key
+        .split([',', '\n'])
+        .map(|s| s.trim())
+        .find(|s| !s.is_empty())
+        .unwrap_or(api_key)
+}
+
 /// Dispatch to the appropriate platform-specific fetcher.
 pub(crate) async fn fetch_for_platform(
     client: &reqwest::Client,
     config: &FetchConfig,
 ) -> Result<Vec<ModelInfo>, AppError> {
+    let key = primary_key(&config.api_key);
     match config.platform.as_str() {
-        "anthropic" | "claude" => fetch_anthropic(client, &config.base_url, &config.api_key).await,
-        "gemini" => fetch_gemini(client, &config.base_url, &config.api_key).await,
+        "anthropic" | "claude" => fetch_anthropic(client, &config.base_url, key).await,
+        "gemini" => fetch_gemini(client, &config.base_url, key).await,
         "bedrock" => fetch_bedrock(config).await,
         "vertex-ai" => Ok(vertex_ai_models()),
-        "new-api" => fetch_new_api(client, &config.base_url, &config.api_key).await,
+        "new-api" => fetch_new_api(client, &config.base_url, key).await,
         "minimax" => Ok(minimax_models()),
-        "dashscope-coding" => fetch_dashscope_coding(client, &config.base_url, &config.api_key).await,
-        _ => fetch_openai_compatible(client, &config.base_url, &config.api_key).await,
+        "dashscope-coding" => fetch_dashscope_coding(client, &config.base_url, key).await,
+        _ => fetch_openai_compatible(client, &config.base_url, key).await,
     }
 }