Changeset 0.10.2 (#58)

server/handlers/completion.go

@@ -480,6 +480,9 @@ func (h *CompletionHandler) resolveConfig(userID string, channelID string, req c
 // loadConversation builds the message history for the LLM by walking the
 // active path through the message tree. Only the current branch is sent —
 // sibling branches are never included in context.
+//
+// Summary-aware: if the path contains a summary node (metadata.type = "summary"),
+// messages before it are replaced by the summary content as a system message.
 func (h *CompletionHandler) loadConversation(channelID, userID, presetSystemPrompt string) ([]providers.Message, error) {
 	messages := make([]providers.Message, 0)
 
@@ -519,10 +522,32 @@ func (h *CompletionHandler) loadConversation(channelID, userID, presetSystemProm
 		return nil, err
 	}
 
-	for _, m := range path {
+	// Find the most recent summary node in the path
+	summaryIdx := -1
+	for i, m := range path {
+		if isSummaryMessage(&m) {
+			summaryIdx = i
+		}
+	}
+
+	// If we found a summary, inject it as a system message and skip prior messages
+	startIdx := 0
+	if summaryIdx >= 0 {
+		messages = append(messages, providers.Message{
+			Role:    "system",
+			Content: "Previous conversation summary:\n" + path[summaryIdx].Content,
+		})
+		startIdx = summaryIdx + 1
+	}
+
+	for _, m := range path[startIdx:] {
 		if m.Role == "system" {
 			continue // system prompts handled above
 		}
+		// Skip summary nodes that aren't the boundary (shouldn't happen, but defensive)
+		if isSummaryMessage(&m) {
+			continue
+		}
 		messages = append(messages, providers.Message{
 			Role:    m.Role,
 			Content: m.Content,
@@ -532,6 +557,18 @@ func (h *CompletionHandler) loadConversation(channelID, userID, presetSystemProm
 	return messages, nil
 }
 
+// isSummaryMessage checks if a PathMessage has summary metadata.
+func isSummaryMessage(m *PathMessage) bool {
+	if m.Metadata == nil {
+		return false
+	}
+	var meta map[string]interface{}
+	if err := json.Unmarshal(*m.Metadata, &meta); err != nil {
+		return false
+	}
+	return meta["type"] == "summary"
+}
+
 // ── Message Persistence ─────────────────────
 
 // persistMessage inserts a message into the tree, updates the cursor, and