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/handlers_test.go

@@ -856,11 +856,12 @@ func TestModel_Update_ViewModeRouting(t *testing.T) {
 			ui := NewBubbleTeaUI(nil, "1.0.0")
 			ui.mu.Lock()
 			ui.viewMode = tt.viewMode
-			if tt.viewMode == ViewModeAddWizard {
+			switch tt.viewMode {
+			case ViewModeAddWizard:
 				ui.addWizard = newAddWizardState()
-			} else if tt.viewMode == ViewModeBenchmark {
+			case ViewModeBenchmark:
 				ui.benchmarkState = newBenchmarkState("id", "alias", 8080)
-			} else if tt.viewMode == ViewModeHTTPLog {
+			case ViewModeHTTPLog:
 				ui.httpLogState = newHTTPLogState("id", "alias")
 			}
 			ui.mu.Unlock()