diff --git a/packages/coding-agent/src/core/gateway/runtime.ts b/packages/coding-agent/src/core/gateway/runtime.ts
index 96291a8..f2026f9 100644
--- a/packages/coding-agent/src/core/gateway/runtime.ts
+++ b/packages/coding-agent/src/core/gateway/runtime.ts
@@ -842,6 +842,7 @@ export class GatewayRuntime {
     managedSession: ManagedGatewaySession,
   ): GatewaySessionSnapshot {
     const messages = managedSession.session.messages;
+    const currentModel = managedSession.session.model;
     const name = managedSession.session.sessionName?.trim() || undefined;
     let lastMessagePreview: string | undefined;
     for (let i = messages.length - 1; i >= 0; i--) {
@@ -881,6 +882,8 @@ export class GatewayRuntime {
       updatedAt: managedSession.lastActiveAt,
       name,
       lastMessagePreview,
+      modelProvider: currentModel?.provider,
+      modelId: currentModel?.id,
     };
   }
 
@@ -1750,8 +1753,11 @@ export class GatewayRuntime {
 
   private async handleReloadSession(sessionKey: string): Promise<void> {
     const managed = await this.requireExistingSession(sessionKey);
-    // Reloading config by calling settingsManager.reload() on the session
-    managed.session.settingsManager.reload();
+    // Rebuild the full session runtime so auth.json, models.json, settings,
+    // and extension-backed resources all pick up on-disk changes.
+    await managed.session.reload();
+    managed.lastActiveAt = Date.now();
+    this.emitState(managed);
   }
 
   getGatewaySessionDir(sessionKey: string): string {
diff --git a/packages/coding-agent/src/core/gateway/types.ts b/packages/coding-agent/src/core/gateway/types.ts
index 201c0d3..23113ea 100644
--- a/packages/coding-agent/src/core/gateway/types.ts
+++ b/packages/coding-agent/src/core/gateway/types.ts
@@ -53,6 +53,8 @@ export interface GatewaySessionSnapshot {
   name?: string;
   lastMessagePreview?: string;
   updatedAt: number;
+  modelProvider?: string;
+  modelId?: string;
 }
 
 export interface GatewaySessionState {