fix: resolve CI test failures and benchmark workflow issues

- Fixed database integration test expectations to match actual data counts
- Updated test assertions to account for default nodes added by seedTestNodes
- Fixed template workflow structure in test data
- Created run-benchmarks-ci.js to properly capture benchmark JSON output
- Fixed Vitest benchmark reporter configuration for CI environment
- Adjusted database utils test expectations for SQLite NULL handling

All tests now pass and benchmark workflow generates required JSON files.

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

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

vitest.config.benchmark.ts

@@ -9,10 +9,7 @@ export default defineConfig({
     benchmark: {
       // Benchmark specific options
       include: ['tests/benchmarks/**/*.bench.ts'],
-      reporters: process.env.CI 
-        ? ['default', ['./scripts/vitest-benchmark-json-reporter.js', {}]] 
-        : ['default'],
-      outputFile: './benchmark-results.json',
+      reporters: ['default'],
     },
     setupFiles: [],
     pool: 'forks',