test: add WebSocket integration tests

Add comprehensive WebSocket test coverage:
- TestWebSocketConnection: Basic connection and JWT auth
- TestWebSocketDeviceAuth: Device token authentication
- TestWebSocketProgressBroadcast: Real-time update delivery
- TestWebSocketPingPong: Heartbeat mechanism
- TestWebSocketConnectionLimit: Multiple concurrent connections
- TestWebSocketInvalidToken: Rejection of invalid tokens
- Helper function for test media item creation

Update test helpers to create ConnectionManager for tests.
Tests verify WebSocket connection, authentication, and
real-time progress broadcast functionality.

cmd/server/tests/phase1_integration_test.go

@@ -125,8 +125,8 @@ func TestPhase1Integration(t *testing.T) {
 	var adminToken string
 	t.Run("LoginAsAdmin", func(t *testing.T) {
 		loginReq := map[string]interface{}{
-			"identifier": "admin@bookmann.test",
-			"password":   "SecurePass123!",
+			"login":    "admin@bookmann.test",
+			"password": "SecurePass123!",
 		}
 
 		body, _ := json.Marshal(loginReq)
@@ -139,7 +139,9 @@ func TestPhase1Integration(t *testing.T) {
 		var result map[string]interface{}
 		json.NewDecoder(resp.Body).Decode(&result)
 
-		adminToken = result["token"].(string)
+		token, ok := result["access_token"].(string)
+		assert.True(t, ok, "Should have access_token")
+		adminToken = token
 		assert.NotEmpty(t, adminToken)
 	})
 
@@ -149,7 +151,7 @@ func TestPhase1Integration(t *testing.T) {
 		libraryReq := map[string]interface{}{
 			"name":        "Test Library",
 			"description": "Integration test library",
-			"type":        "ebook",
+			"type":        "ebooks",
 		}
 
 		body, _ := json.Marshal(libraryReq)
@@ -233,7 +235,8 @@ func TestPhase1Integration(t *testing.T) {
 
 	// Step 5: List media-items
 	t.Run("Step5_ListMediaItems", func(t *testing.T) {
-		req, _ := http.NewRequest("GET", baseTestURL+"/media-items?limit=50", nil)
+		url := fmt.Sprintf("%s/libraries/%s/media-items", baseTestURL, libraryID)
+		req, _ := http.NewRequest("GET", url, nil)
 		req.Header.Set("Authorization", "Bearer "+adminToken)
 
 		client := &http.Client{}
@@ -246,11 +249,11 @@ func TestPhase1Integration(t *testing.T) {
 		var result map[string]interface{}
 		json.NewDecoder(resp.Body).Decode(&result)
 
-		items, ok := result["items"].([]interface{})
-		assert.True(t, ok, "Items field should exist")
-		assert.True(t, len(items) >= 0, "Should return items array")
+		data, ok := result["data"].([]interface{})
+		assert.True(t, ok, "Data field should exist")
+		assert.True(t, len(data) >= 0, "Should return data array")
 
-		t.Logf("✅ Step 5 PASSED: Media items listed (count: %d)", len(items))
+		t.Logf("✅ Step 5 PASSED: Media items listed (count: %d)", len(data))
 	})
 }