WIP: Save agent roles integration work before CHORUS rebrand

- Agent roles and coordination features
- Chat API integration testing
- New configuration and workspace management

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

logging/hypercore.go

@@ -81,6 +81,12 @@ func NewHypercoreLog(peerID peer.ID) *HypercoreLog {
 	}
 }
 
+// AppendString is a convenience method for string log types (to match interface)
+func (h *HypercoreLog) AppendString(logType string, data map[string]interface{}) error {
+	_, err := h.Append(LogType(logType), data)
+	return err
+}
+
 // Append adds a new entry to the log
 func (h *HypercoreLog) Append(logType LogType, data map[string]interface{}) (*LogEntry, error) {
 	h.mutex.Lock()
@@ -193,6 +199,42 @@ func (h *HypercoreLog) GetEntriesByAuthor(author string) ([]LogEntry, error) {
 	return result, nil
 }
 
+// GetRecentEntries retrieves the most recent N entries from the log
+func (h *HypercoreLog) GetRecentEntries(count int) ([]LogEntry, error) {
+	h.mutex.RLock()
+	defer h.mutex.RUnlock()
+	
+	totalEntries := len(h.entries)
+	if count <= 0 || totalEntries == 0 {
+		return []LogEntry{}, nil
+	}
+	
+	start := 0
+	if totalEntries > count {
+		start = totalEntries - count
+	}
+	
+	result := make([]LogEntry, totalEntries-start)
+	copy(result, h.entries[start:])
+	
+	return result, nil
+}
+
+// GetEntriesSince retrieves all entries since a given index
+func (h *HypercoreLog) GetEntriesSince(sinceIndex uint64) ([]LogEntry, error) {
+	h.mutex.RLock()
+	defer h.mutex.RUnlock()
+	
+	if sinceIndex >= uint64(len(h.entries)) {
+		return []LogEntry{}, nil
+	}
+	
+	result := make([]LogEntry, len(h.entries)-int(sinceIndex))
+	copy(result, h.entries[sinceIndex:])
+	
+	return result, nil
+}
+
 // VerifyIntegrity verifies the integrity of the log chain
 func (h *HypercoreLog) VerifyIntegrity() error {
 	h.mutex.RLock()