style: fix gofmt formatting and update web search API in tests

- Remove trailing whitespace in web.go and base_test.go
- Update config_test.go and web_test.go for WebSearchToolOptions API

pkg/channels/base_test.go

@@ -50,4 +50,3 @@ func TestBaseChannelIsAllowed(t *testing.T) {
 		})
 	}
 }
-

pkg/config/config_test.go

@@ -136,11 +136,11 @@ func TestDefaultConfig_WebTools(t *testing.T) {
 	cfg := DefaultConfig()
 
 	// Verify web tools defaults
-	if cfg.Tools.Web.Search.MaxResults != 5 {
-		t.Error("Expected MaxResults 5, got ", cfg.Tools.Web.Search.MaxResults)
+	if cfg.Tools.Web.Brave.MaxResults != 5 {
+		t.Error("Expected Brave MaxResults 5, got ", cfg.Tools.Web.Brave.MaxResults)
 	}
-	if cfg.Tools.Web.Search.APIKey != "" {
-		t.Error("Search API key should be empty by default")
+	if cfg.Tools.Web.Brave.APIKey != "" {
+		t.Error("Brave API key should be empty by default")
 	}
 }
 

pkg/tools/web_test.go

@@ -173,30 +173,23 @@ func TestWebTool_WebFetch_Truncation(t *testing.T) {
 	}
 }
 
-// TestWebTool_WebSearch_NoApiKey verifies error handling when API key is missing
+// TestWebTool_WebSearch_NoApiKey verifies that no tool is created when API key is missing
 func TestWebTool_WebSearch_NoApiKey(t *testing.T) {
-	tool := NewWebSearchTool("", 5)
-	ctx := context.Background()
-	args := map[string]interface{}{
-		"query": "test",
+	tool := NewWebSearchTool(WebSearchToolOptions{BraveEnabled: true, BraveAPIKey: ""})
+	if tool != nil {
+		t.Errorf("Expected nil tool when Brave API key is empty")
 	}
 
-	result := tool.Execute(ctx, args)
-
-	// Should return error result
-	if !result.IsError {
-		t.Errorf("Expected error when API key is missing")
-	}
-
-	// Should mention missing API key
-	if !strings.Contains(result.ForLLM, "BRAVE_API_KEY") && !strings.Contains(result.ForUser, "BRAVE_API_KEY") {
-		t.Errorf("Expected API key error message, got ForLLM: %s", result.ForLLM)
+	// Also nil when nothing is enabled
+	tool = NewWebSearchTool(WebSearchToolOptions{})
+	if tool != nil {
+		t.Errorf("Expected nil tool when no provider is enabled")
 	}
 }
 
 // TestWebTool_WebSearch_MissingQuery verifies error handling for missing query
 func TestWebTool_WebSearch_MissingQuery(t *testing.T) {
-	tool := NewWebSearchTool("test-key", 5)
+	tool := NewWebSearchTool(WebSearchToolOptions{BraveEnabled: true, BraveAPIKey: "test-key", BraveMaxResults: 5})
 	ctx := context.Background()
 	args := map[string]interface{}{}