feat: initial commit — unarr CLI

Search, inspect, stream, and download torrents from the terminal.
Replaces the entire *arr stack with a single binary.

internal/engine/manager_test.go

@@ -0,0 +1,85 @@
+package engine
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/torrentclaw/torrentclaw-cli/internal/agent"
+)
+
+func TestManagerSubmitAndWait(t *testing.T) {
+	reporter := NewProgressReporter(
+		agent.NewClient("http://localhost", "test", "test"),
+		1*time.Second,
+	)
+
+	dl := &mockDownloader{method: MethodTorrent, available: true}
+	mgr := NewManager(ManagerConfig{
+		MaxConcurrent: 2,
+		OutputDir:     t.TempDir(),
+	}, reporter, dl)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	go reporter.Run(ctx)
+
+	mgr.Submit(ctx, agent.Task{
+		ID:              "test-task-1",
+		InfoHash:        "abc123def456abc123def456abc123def456abc1",
+		Title:           "Test Movie",
+		PreferredMethod: "torrent",
+	})
+
+	mgr.Wait()
+
+	// Task should have been processed (completed or failed depending on verify)
+	// Since mock returns a file that doesn't exist, it may fail at verify
+	// This is expected — we're testing the pipeline works
+}
+
+func TestManagerHasCapacity(t *testing.T) {
+	reporter := NewProgressReporter(
+		agent.NewClient("http://localhost", "test", "test"),
+		1*time.Second,
+	)
+
+	mgr := NewManager(ManagerConfig{MaxConcurrent: 2}, reporter)
+
+	if !mgr.HasCapacity() {
+		t.Error("new manager should have capacity")
+	}
+}
+
+func TestManagerActiveCount(t *testing.T) {
+	reporter := NewProgressReporter(
+		agent.NewClient("http://localhost", "test", "test"),
+		1*time.Second,
+	)
+
+	mgr := NewManager(ManagerConfig{MaxConcurrent: 3}, reporter)
+
+	if mgr.ActiveCount() != 0 {
+		t.Errorf("ActiveCount = %d, want 0", mgr.ActiveCount())
+	}
+}
+
+func TestManagerShutdown(t *testing.T) {
+	reporter := NewProgressReporter(
+		agent.NewClient("http://localhost", "test", "test"),
+		1*time.Second,
+	)
+
+	dl := &mockDownloader{method: MethodTorrent, available: true}
+	mgr := NewManager(ManagerConfig{
+		MaxConcurrent: 1,
+		OutputDir:     t.TempDir(),
+	}, reporter, dl)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	mgr.Shutdown(ctx)
+	// Should not hang
+}