chore: add golangci-lint v2 config and fix linter warnings (#46)

- [x] Add golangci-lint v2 configuration with formatters section
- [x] Reorganize linters-settings under linters section
- [x] Replace if-else chains with switch statements for clarity
- [x] Wrap all ignored error returns with `_ = ` pattern
- [x] Add OSC 8 hyperlink helper function for clickable ports
- [x] Add blank line in table styling function
- [x] Remove unnecessary type assertion in test

internal/ui/commands_test.go

@@ -368,7 +368,7 @@ func TestHTTPLogEntry(t *testing.T) {
 func TestHTTPLogSubscriberType(t *testing.T) {
 	// Test that our mock matches the type
 	mock := NewMockHTTPLogSubscriber()
-	var subscriber HTTPLogSubscriber = mock.GetSubscriberFunc()
+	subscriber := mock.GetSubscriberFunc()
 
 	// Test subscription
 	callCount := 0