From 76bd8ccb2d133c177d55cc4c4d0f9f8af2c45379 Mon Sep 17 00:00:00 2001
From: Valeriy Selitskiy <239034+iamwavecut@users.noreply.github.com>
Date: Sat, 10 Oct 2026 14:44:02 +0200
Subject: [PATCH] fix(dialog): expose reaction allowlist in tool schema

---
 crates/openplotva-dialog/src/lib.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/crates/openplotva-dialog/src/lib.rs b/crates/openplotva-dialog/src/lib.rs
index 5bc4b1b3..b38af3da 100644
--- a/crates/openplotva-dialog/src/lib.rs
+++ b/crates/openplotva-dialog/src/lib.rs
@@ -1251,6 +1251,9 @@ fn tool_argument_schema(arg: &ToolArgSpec) -> Value {
         }
     }
     match arg.name {
+        "emoji" => {
+            schema.insert("enum".to_owned(), json!(SESSION_REACTION_ALLOWED_EMOJI));
+        }
         "scope" => {
             schema.insert("enum".to_owned(), json!(["thread", "chat"]));
         }
@@ -5590,6 +5593,26 @@ mod tests {
         );
     }
 
+    #[test]
+    fn reaction_schema_rejects_unsupported_and_lifecycle_emoji() {
+        let schema = tool_parameters_schema(&SESSION_REACT_TO_MESSAGE_SPEC);
+        let emoji = &schema["properties"]["emoji"];
+        assert_eq!(emoji["type"], "string");
+        let choices = emoji["enum"].as_array().expect("bounded emoji choices");
+        for allowed in ["🤣", "😁", "👍", "❤"] {
+            assert!(choices.contains(&json!(allowed)));
+        }
+        for rejected in ["😂", "🤫", "😄", "👀", "✍", "🤔"] {
+            assert!(!choices.contains(&json!(rejected)));
+        }
+        assert!(
+            schema["required"]
+                .as_array()
+                .expect("required arguments")
+                .contains(&json!("emoji"))
+        );
+    }
+
     #[test]
     fn tool_catalog_preserves_existing_tools_and_exposes_agent_context() {
         let names = alternative_dialog_tool_names();