feat(runtime): add process watch patterns, unified backup/import, pluggable context engine, token usage, and codex device login

pkg/agent/context_engine_test.go

@@ -0,0 +1,48 @@
+package agent
+
+import (
+	"testing"
+
+	"github.com/YspCoder/clawgo/pkg/bus"
+	"github.com/YspCoder/clawgo/pkg/providers"
+	"github.com/YspCoder/clawgo/pkg/session"
+)
+
+type testContextEngine struct {
+	lastReq  ContextBuildRequest
+	messages []providers.Message
+}
+
+func (e *testContextEngine) BuildMessages(req ContextBuildRequest) []providers.Message {
+	e.lastReq = req
+	return append([]providers.Message(nil), e.messages...)
+}
+
+func (e *testContextEngine) SkillsInfo() map[string]interface{} {
+	return map[string]interface{}{"total": 0}
+}
+
+func TestAgentLoopUsesPluggableContextEngine(t *testing.T) {
+	t.Parallel()
+
+	engine := &testContextEngine{
+		messages: []providers.Message{{Role: "system", Content: "from-test-engine"}},
+	}
+	loop := &AgentLoop{
+		sessions:      session.NewSessionManager(""),
+		contextEngine: engine,
+	}
+	msg := bus.InboundMessage{
+		Channel:    "cli",
+		ChatID:     "direct",
+		SessionKey: "main",
+		Content:    "hello",
+	}
+	messages, _ := loop.prepareUserMessageContext(msg, "main")
+	if len(messages) != 1 || messages[0].Content != "from-test-engine" {
+		t.Fatalf("expected custom engine output, got %#v", messages)
+	}
+	if engine.lastReq.CurrentMessage != "hello" || engine.lastReq.Channel != "cli" {
+		t.Fatalf("unexpected context request: %#v", engine.lastReq)
+	}
+}