Fix limits mapping in setModel and fix import order in ProviderConfig

Agent-Logs-Url: https://github.com/github/copilot-sdk-java/sessions/c48ff7e5-7e42-43e6-a3df-42fe0004aa91

Co-authored-by: edburns <75821+edburns@users.noreply.github.com>

Author: Copilot

src/main/java/com/github/copilot/sdk/CopilotSession.java

@@ -1590,8 +1590,13 @@ public CompletableFuture<Void> setModel(String model, String reasoningEffort,
                 supports = new SessionModelSwitchToParams.SessionModelSwitchToParamsModelCapabilities.SessionModelSwitchToParamsModelCapabilitiesSupports(
                         s.getVision(), s.getReasoningEffort());
             }
+            SessionModelSwitchToParams.SessionModelSwitchToParamsModelCapabilities.SessionModelSwitchToParamsModelCapabilitiesLimits limits = null;
+            if (modelCapabilities.getLimits() != null) {
+                limits = new ObjectMapper().convertValue(modelCapabilities.getLimits(),
+                        SessionModelSwitchToParams.SessionModelSwitchToParamsModelCapabilities.SessionModelSwitchToParamsModelCapabilitiesLimits.class);
+            }
             generatedCapabilities = new SessionModelSwitchToParams.SessionModelSwitchToParamsModelCapabilities(supports,
-                    null);
+                    limits);
         }
         return getRpc().model
                 .switchTo(new SessionModelSwitchToParams(sessionId, model, reasoningEffort, generatedCapabilities))

src/main/java/com/github/copilot/sdk/json/ProviderConfig.java

@@ -4,12 +4,12 @@
 
 package com.github.copilot.sdk.json;
 
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonProperty;
-
 import java.util.Collections;
 import java.util.Map;
 
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
 /**
  * Configuration for a custom API provider (BYOK - Bring Your Own Key).
  * <p>