fix: configure Vitest to properly exclude VS Code integration tests

- Add vitest.config.ts with proper include/exclude patterns
- Exclude src/test/** directory from unit tests (VS Code integration tests)
- Exclude compiled out/** directory from test discovery
- Update tsconfig.json to exclude vitest.config.ts from compilation
- Add .eslintignore to skip linting vitest config
- Update test script to use default Vitest behavior
- Fix .vscodeignore formatting (add missing newline)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: jaggederest

.eslintignore

@@ -0,0 +1 @@
+vitest.config.ts

.vscodeignore

@@ -12,4 +12,4 @@ node_modules/**
 **/.editorconfig
 **/*.map
 **/*.ts
-*.gif
+*.gif

package.json

@@ -278,7 +278,7 @@
 		"package:prerelease": "npx vsce package --pre-release",
 		"lint": "eslint . --ext ts,md",
 		"lint:fix": "yarn lint --fix",
-		"test": "vitest ./src",
+		"test": "vitest",
 		"test:ci": "CI=true yarn test",
 		"test:integration": "vscode-test",
 		"pretest": "yarn run compile-tests && yarn run build && yarn run lint",

tsconfig.json

@@ -8,5 +8,6 @@
 		"sourceMap": true,
 		"strict": true,
 		"skipLibCheck": true
-	}
+	},
+	"exclude": ["vitest.config.ts"]
 }

vitest.config.ts

@@ -0,0 +1,17 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+	test: {
+		include: ["src/**/*.test.ts"],
+		exclude: [
+			"**/node_modules/**",
+			"**/dist/**",
+			"**/build/**",
+			"**/out/**",
+			"**/src/test/**",
+			"src/test/**",
+			"./src/test/**",
+		],
+		environment: "node",
+	},
+});