chore: replace interface{} with any (Go 1.18+ alias)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pkg/cache/cache.go

@@ -67,7 +67,7 @@ func (c *Cache) Path(key string) string {
 }
 
 // Get retrieves a cached item if it exists and hasn't expired.
-func (c *Cache) Get(key string, dest interface{}) (bool, error) {
+func (c *Cache) Get(key string, dest any) (bool, error) {
 	path := c.Path(key)
 
 	dataStr, err := c.medium.Read(path)
@@ -98,7 +98,7 @@ func (c *Cache) Get(key string, dest interface{}) (bool, error) {
 }
 
 // Set stores an item in the cache.
-func (c *Cache) Set(key string, data interface{}) error {
+func (c *Cache) Set(key string, data any) error {
 	path := c.Path(key)
 
 	// Ensure parent directory exists

pkg/framework/core/interfaces.go

@@ -44,15 +44,15 @@ type Option func(*Core) error
 // Message is the interface for all messages that can be sent through the Core's IPC system.
 // Any struct can be a message, allowing for structured data to be passed between services.
 // Used with ACTION for fire-and-forget broadcasts.
-type Message interface{}
+type Message any
 
 // Query is the interface for read-only requests that return data.
 // Used with QUERY (first responder) or QUERYALL (all responders).
-type Query interface{}
+type Query any
 
 // Task is the interface for requests that perform side effects.
 // Used with PERFORM (first responder executes).
-type Task interface{}
+type Task any
 
 // TaskWithID is an optional interface for tasks that need to know their assigned ID.
 // This is useful for tasks that want to report progress back to the frontend.

pkg/session/parser.go

@@ -54,7 +54,7 @@ type contentBlock struct {
 	Text      string          `json:"text,omitempty"`
 	Input     json.RawMessage `json:"input,omitempty"`
 	ToolUseID string          `json:"tool_use_id,omitempty"`
-	Content   interface{}     `json:"content,omitempty"`
+	Content   any             `json:"content,omitempty"`
 	IsError   *bool           `json:"is_error,omitempty"`
 }
 
@@ -340,7 +340,7 @@ func extractToolInput(toolName string, raw json.RawMessage) string {
 	}
 
 	// Fallback: show raw JSON keys
-	var m map[string]interface{}
+	var m map[string]any
 	if json.Unmarshal(raw, &m) == nil {
 		var parts []string
 		for k := range m {
@@ -353,21 +353,21 @@ func extractToolInput(toolName string, raw json.RawMessage) string {
 	return ""
 }
 
-func extractResultContent(content interface{}) string {
+func extractResultContent(content any) string {
 	switch v := content.(type) {
 	case string:
 		return v
-	case []interface{}:
+	case []any:
 		var parts []string
 		for _, item := range v {
-			if m, ok := item.(map[string]interface{}); ok {
+			if m, ok := item.(map[string]any); ok {
 				if text, ok := m["text"].(string); ok {
 					parts = append(parts, text)
 				}
 			}
 		}
 		return strings.Join(parts, "\n")
-	case map[string]interface{}:
+	case map[string]any:
 		if text, ok := v["text"].(string); ok {
 			return text
 		}