fix(dialog): allow a quote from a duplicated current message

crates/openplotva-dialog/src/leak_guard.rs

@@ -213,7 +213,9 @@ impl ReplyLeakGuard {
             .history
             .iter()
             .filter(|entry| entry.shingles.iter().any(|s| reply_shingles.contains(s)))
-            .count();
+            .filter_map(|entry| entry.exact)
+            .collect::<HashSet<_>>()
+            .len();
         echoed >= MIN_ECHOED_HISTORY_ENTRIES
     }
 
@@ -660,6 +662,36 @@ mod tests {
         );
     }
 
+    #[test]
+    fn repeated_history_entry_does_not_make_one_quote_a_transcript_dump() {
+        let source = "Our team decided to move the weekly meeting from Tuesday to Thursday morning";
+        let guard = ReplyLeakGuard::builder()
+            .history_entry("Ada", source)
+            .history_entry("Ada", source)
+            .history_entry("Ben", &source.to_uppercase())
+            .build();
+        assert_eq!(
+            guard.detect("The phrase ‘move the weekly meeting from Tuesday to Thursday morning’ describes a schedule change."),
+            None
+        );
+        assert_eq!(guard.detect(source), Some(DialogLeak::Transcript));
+        assert_eq!(
+            guard.detect("Ada: agreed\nBen: agreed"),
+            Some(DialogLeak::Transcript)
+        );
+        let guard = ReplyLeakGuard::builder()
+            .history_entry("Ada", source)
+            .history_entry(
+                "Ben",
+                "The meeting room on the second floor is unavailable during the renovation",
+            )
+            .build();
+        assert_eq!(
+            guard.detect("move the weekly meeting from Tuesday to Thursday morning\nThe meeting room on the second floor is unavailable"),
+            Some(DialogLeak::Transcript)
+        );
+    }
+
     #[test]
     fn transcript_echo_is_transcript_leak() {
         let guard = guard();

crates/openplotva-llm/src/aifarm.rs

@@ -8255,6 +8255,41 @@ mod tests {
         );
     }
 
+    #[test]
+    fn reply_leak_guard_allows_one_quote_from_the_current_history_message() {
+        let mut input = base_input();
+        input.message.id = 11;
+        input.message.text =
+            "Our team decided to move the weekly meeting from Tuesday to Thursday morning".into();
+        input.history.push(HistoryMessage {
+            role: ROLE_USER.into(),
+            kind: MESSAGE_KIND_TEXT.into(),
+            name: input.user.full_name.clone(),
+            text: input.message.text.clone(),
+            message_id: input.message.id,
+            ..Default::default()
+        });
+        let messages =
+            build_initial_messages_with_tool_prompt(&input, &input.history, ToolPromptMode::Native)
+                .expect("messages");
+        let guard = reply_leak_guard(&messages, &input);
+        let answer = "‘move the weekly meeting from Tuesday to Thursday morning’ describes a schedule change.";
+        let completion = |content: &str| json!({"choices":[{"message":{"content":content}}]});
+        assert_eq!(
+            extract_final_answer_for_provider(&completion(answer), PROVIDER_AIFARM, &guard)
+                .expect("a quote is allowed"),
+            answer
+        );
+        assert!(
+            extract_final_answer_for_provider(
+                &completion(&input.message.text),
+                PROVIDER_AIFARM,
+                &guard
+            )
+            .is_err()
+        );
+    }
+
     #[test]
     fn reply_leak_guard_rejects_prompt_and_transcript_copies() {
         let mut input = base_input();