From f595baec06175aa2724e08a68f8d5b634880a19d Mon Sep 17 00:00:00 2001
From: jens-gilion <jens@gilion.com>
Date: Mon, 23 Feb 2026 20:46:06 +0100
Subject: [PATCH] fix: encode ActivityOptions.summary as json/plain payload
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The LocalActivityOptions path already does this correctly — this just
   aligns the two.
---
 crates/sdk/src/workflow_context/options.rs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/crates/sdk/src/workflow_context/options.rs b/crates/sdk/src/workflow_context/options.rs
index 7a18671b5..5f8f42fd3 100644
--- a/crates/sdk/src/workflow_context/options.rs
+++ b/crates/sdk/src/workflow_context/options.rs
@@ -108,10 +108,13 @@ impl ActivityOptions {
                 }
                 .into(),
             ),
-            user_metadata: self.summary.map(|s| UserMetadata {
-                summary: Some(s.into()),
-                details: None,
-            }),
+            user_metadata: self
+                .summary
+                .and_then(|s| s.as_json_payload().ok())
+                .map(|summary| UserMetadata {
+                    summary: Some(summary),
+                    details: None,
+                }),
         }
     }
 }