Improve script error dialogs #304

- Include the script's directory path #304.
- Exclude Windows-specific instructions on non-Windows OS.
- Standardize language across dialogs for consistency.

Other supporting changes:

- Add script diagnostics data collection from main process.
- Document script file storage and execution tamper protection in
  SECURITY.md.
- Remove redundant comment in `NodeReadbackFileWriter`.
- Centralize error display for uniformity and simplicity.
- Simpify `WindowVariablesValidator` to omit checks when not on the
  renderer process.
- Improve and centralize Electron environment detection.
- Use more emphatic language (don't worry) in error messages.

tests/unit/presentation/components/Code/CodeButtons/ScriptErrorDialog.spec.ts

@@ -0,0 +1,149 @@
+import { describe, it, expect } from 'vitest';
+import { ScriptDiagnosticsCollector } from '@/application/ScriptDiagnostics/ScriptDiagnosticsCollector';
+import { OperatingSystem } from '@/domain/OperatingSystem';
+import { Dialog } from '@/presentation/common/Dialog';
+import { ScriptErrorDetails, createScriptErrorDialog } from '@/presentation/components/Code/CodeButtons/ScriptErrorDialog';
+import { expectExists } from '@tests/shared/Assertions/ExpectExists';
+import { AllSupportedOperatingSystems } from '@tests/shared/TestCases/SupportedOperatingSystems';
+import { ScriptDiagnosticsCollectorStub } from '@tests/unit/shared/Stubs/ScriptDiagnosticsCollectorStub';
+
+describe('ScriptErrorDialog', () => {
+  describe('handles readback error type', () => {
+    it('handles file readback error', async () => {
+      // arrange
+      const errorDetails = createErrorDetails({ isFileReadbackError: true });
+      const context = new CreateScriptErrorDialogTestSetup()
+        .withDetails(errorDetails);
+      // act
+      const dialog = await context.createScriptErrorDialog();
+      // assert
+      assertValidDialog(dialog);
+    });
+    it('handles generic error', async () => {
+      // arrange
+      const errorDetails = createErrorDetails({ isFileReadbackError: false });
+      const context = new CreateScriptErrorDialogTestSetup()
+        .withDetails(errorDetails);
+      // act
+      const dialog = await context.createScriptErrorDialog();
+      // assert
+      assertValidDialog(dialog);
+    });
+  });
+
+  describe('handles supported operatingSystems', () => {
+    AllSupportedOperatingSystems.forEach((operatingSystem) => {
+      it(`${OperatingSystem[operatingSystem]}`, async () => {
+        // arrange
+        const diagnostics = new ScriptDiagnosticsCollectorStub()
+          .withOperatingSystem(operatingSystem);
+        const context = new CreateScriptErrorDialogTestSetup()
+          .withDiagnostics(diagnostics);
+        // act
+        const dialog = await context.createScriptErrorDialog();
+        // assert
+        assertValidDialog(dialog);
+      });
+    });
+  });
+
+  it('handles undefined diagnostics collector', async () => {
+    const diagnostics = undefined;
+    const context = new CreateScriptErrorDialogTestSetup()
+      .withDiagnostics(diagnostics);
+    // act
+    const dialog = await context.createScriptErrorDialog();
+    // assert
+    assertValidDialog(dialog);
+  });
+
+  it('handles undefined operating system', async () => {
+    // arrange
+    const undefinedOperatingSystem = undefined;
+    const diagnostics = new ScriptDiagnosticsCollectorStub()
+      .withOperatingSystem(undefinedOperatingSystem);
+    const context = new CreateScriptErrorDialogTestSetup()
+      .withDiagnostics(diagnostics);
+    // act
+    const dialog = await context.createScriptErrorDialog();
+    // assert
+    assertValidDialog(dialog);
+  });
+
+  it('handles directory path', async () => {
+    // arrange
+    const undefinedScriptsDirectory = undefined;
+    const diagnostics = new ScriptDiagnosticsCollectorStub()
+      .withScriptDirectoryPath(undefinedScriptsDirectory);
+    const context = new CreateScriptErrorDialogTestSetup()
+      .withDiagnostics(diagnostics);
+    // act
+    const dialog = await context.createScriptErrorDialog();
+    // assert
+    assertValidDialog(dialog);
+  });
+
+  describe('handles all contexts', () => {
+    const possibleContexts: ScriptErrorDetails['errorContext'][] = ['run', 'save'];
+    possibleContexts.forEach((dialogContext) => {
+      it(`${dialogContext} context`, async () => {
+        // arrange
+        const undefinedScriptsDirectory = undefined;
+        const diagnostics = new ScriptDiagnosticsCollectorStub()
+          .withScriptDirectoryPath(undefinedScriptsDirectory);
+        const context = new CreateScriptErrorDialogTestSetup()
+          .withDiagnostics(diagnostics);
+        // act
+        const dialog = await context.createScriptErrorDialog();
+        // assert
+        assertValidDialog(dialog);
+      });
+    });
+  });
+});
+
+function assertValidDialog(dialog: Parameters<Dialog['showError']>): void {
+  expectExists(dialog);
+  const [title, message] = dialog;
+  expectExists(title);
+  expect(title).to.have.length.greaterThan(1);
+  expectExists(message);
+  expect(message).to.have.length.greaterThan(1);
+}
+
+function createErrorDetails(partialDetails?: Partial<ScriptErrorDetails>): ScriptErrorDetails {
+  const defaultDetails: ScriptErrorDetails = {
+    errorContext: 'run',
+    errorType: 'test-error-type',
+    errorMessage: 'test error message',
+    isFileReadbackError: false,
+  };
+  return {
+    ...defaultDetails,
+    ...partialDetails,
+  };
+}
+
+class CreateScriptErrorDialogTestSetup {
+  private details: ScriptErrorDetails = createErrorDetails();
+
+  private diagnostics:
+  ScriptDiagnosticsCollector | undefined = new ScriptDiagnosticsCollectorStub();
+
+  public withDetails(details: ScriptErrorDetails): this {
+    this.details = details;
+    return this;
+  }
+
+  public withDiagnostics(diagnostics: ScriptDiagnosticsCollector | undefined): this {
+    this.diagnostics = diagnostics;
+    return this;
+  }
+
+  public createScriptErrorDialog() {
+    return createScriptErrorDialog(
+      this.details,
+      this.diagnostics,
+    );
+  }
+}