fix pipeline tool context origin injection

pkg/agent/loop_tool_context_test.go

@@ -0,0 +1,44 @@
+package agent
+
+import "testing"
+
+func TestWithToolContextArgsPipelineAutoInject(t *testing.T) {
+	args := map[string]interface{}{
+		"objective": "build feature",
+	}
+	got := withToolContextArgs("pipeline_create", args, "telegram", "123")
+	if got["channel"] != "telegram" {
+		t.Fatalf("expected channel auto-injected for pipeline_create, got %v", got["channel"])
+	}
+	if got["chat_id"] != "123" {
+		t.Fatalf("expected chat_id auto-injected for pipeline_create, got %v", got["chat_id"])
+	}
+}
+
+func TestWithToolContextArgsPipelineRespectsExplicitTarget(t *testing.T) {
+	args := map[string]interface{}{
+		"pipeline_id": "p-1",
+		"channel":     "webui",
+		"chat_id":     "panel",
+	}
+	got := withToolContextArgs("pipeline_dispatch", args, "telegram", "123")
+	if got["channel"] != "webui" {
+		t.Fatalf("expected explicit channel preserved, got %v", got["channel"])
+	}
+	if got["chat_id"] != "panel" {
+		t.Fatalf("expected explicit chat_id preserved, got %v", got["chat_id"])
+	}
+}
+
+func TestWithToolContextArgsIgnoresUnrelatedTools(t *testing.T) {
+	args := map[string]interface{}{
+		"path": "README.md",
+	}
+	got := withToolContextArgs("read_file", args, "telegram", "123")
+	if _, ok := got["channel"]; ok {
+		t.Fatalf("did not expect channel for unrelated tool")
+	}
+	if _, ok := got["chat_id"]; ok {
+		t.Fatalf("did not expect chat_id for unrelated tool")
+	}
+}