fix: pass ContextManagerConfig to factory in resolveContextManager

- Add ContextManagerConfig json.RawMessage field to AgentDefaults
- Pass al.cfg.Agents.Defaults.ContextManagerConfig to factory call

pkg/agent/loop.go

@@ -2852,7 +2852,7 @@ func (al *AgentLoop) resolveContextManager() ContextManager {
 		})
 		return &legacyContextManager{al: al}
 	}
-	cm, err := factory(nil, al)
+	cm, err := factory(al.cfg.Agents.Defaults.ContextManagerConfig, al)
 	if err != nil {
 		logger.WarnCF("agent", "Failed to create context manager, falling back to legacy", map[string]any{
 			"name":  name,

pkg/config/config.go

@@ -247,6 +247,7 @@ type AgentDefaults struct {
 	ToolFeedback              ToolFeedbackConfig `json:"tool_feedback,omitempty"`
 	SplitOnMarker             bool               `json:"split_on_marker"                  env:"PICOCLAW_AGENTS_DEFAULTS_SPLIT_ON_MARKER"` // split messages on <|[SPLIT]|> marker
 	ContextManager            string             `json:"context_manager,omitempty"        env:"PICOCLAW_AGENTS_DEFAULTS_CONTEXT_MANAGER"`
+	ContextManagerConfig      json.RawMessage    `json:"context_manager_config,omitempty" env:"PICOCLAW_AGENTS_DEFAULTS_CONTEXT_MANAGER_CONFIG"`
 }
 
 const DefaultMaxMediaSize = 20 * 1024 * 1024 // 20 MB