Initial commit of the Aperture VS Code extension, including core functionality for OpenAPI JSON/YAML IntelliSense, custom linting rules, and comprehensive test scenarios. Added configuration files, package dependencies, and example OpenAPI documents.

test-scenarios.md

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+# Aperture Extension Test Scenarios
+
+This document outlines the test scenarios for the Aperture VS Code extension.
+
+## Test Scenarios
+
+### 1. Root Spec Validation
+- **Valid**: `examples/openapi-3.2.yaml`, `examples/openapi-3.1.yaml`, `examples/swagger-2.0.yaml`
+- **Invalid**: `examples/invalid-missing-info.yaml`
+  - Should show error: "OpenAPI document must contain an 'info' section"
+
+### 2. Schema Naming Validation
+- **Invalid**: `examples/invalid-schema-naming.yaml`
+  - Should show warnings for schema names not in PascalCase
+  - `pet` should be `Pet`
+
+### 3. Operation ID Validation
+- **Invalid**: `examples/invalid-duplicate-operation-id.yaml`
+  - Should show warning for duplicate `operationId: listPets`
+
+### 4. Path Parameter Validation
+- **Invalid**: `examples/invalid-path-parameters.yaml`
+  - Should show warnings for undeclared path parameters `{petId}` and `{ownerId}`
+
+### 5. Version Detection
+- Test with different OpenAPI versions (3.2, 3.1, 3.0, 2.0)
+- Test with `versionPreference: "auto"` vs forced versions
+- Test with invalid version strings
+
+### 6. Settings Configuration
+- Test `openapiLsp.versionPreference` setting
+- Test `openapiLsp.enableTypeProfile` setting
+- Test `openapiLsp.enableCustomRules` setting
+- Test `openapiLsp.maxFileSize` setting
+- Test `openapiLsp.debounceDelay` setting
+
+### 7. Performance Testing
+- Test with large files (>5MB)
+- Test debouncing behavior
+- Test cache performance
+- Test memory usage
+
+### 8. Multi-file Validation
+- Test `$ref` resolution across multiple files
+- Test circular reference detection
+- Test file watching and re-validation
+
+### 9. Hover and IntelliSense
+- Test hover information on schema properties
+- Test completion suggestions
+- Test validation messages
+
+### 10. Error Handling
+- Test with malformed JSON/YAML
+- Test with network timeouts
+- Test with missing dependencies
+
+## Running Tests
+
+1. Install the extension in VS Code
+2. Open the example files
+3. Verify that diagnostics appear in the Problems panel
+4. Test hover functionality
+5. Test settings changes
+6. Test with different file sizes
+
+## Expected Results
+
+- Valid files should show no errors
+- Invalid files should show appropriate error messages
+- Hover should provide helpful information
+- Settings should be respected
+- Performance should be smooth even with large files