⚡ Increase PGlite pool size to 24 for maximum parallel execution

- Change default pool size from 3 to 24 instances
- Update documentation with new default and memory usage
- Enables testing up to 24 testcases concurrently
- Memory usage: ~6GB (24 × 256MB per instance)

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

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

Author: hoshinotsuyoshi

frontend/internal-packages/agent/src/tools/runTestTool.ts

@@ -36,7 +36,7 @@ async function executeDmlOperationsByTestcase(
     testcaseCount: testcases.length,
   })
 
-  const poolSize = Number(process.env['PGLITE_POOL_SIZE'] || '3')
+  const poolSize = Number(process.env['PGLITE_POOL_SIZE'] || '24')
   console.info(
     `[runTestTool] Starting parallel execution with ${poolSize}-instance pool`,
   )

frontend/internal-packages/pglite-server/README.md

@@ -6,9 +6,9 @@ Internal package for executing SQL queries using PGlite (PostgreSQL in WebAssemb
 
 ### Environment Variables
 
-- `PGLITE_POOL_SIZE`: Number of PGlite instances in the pool (default: 3)
+- `PGLITE_POOL_SIZE`: Number of PGlite instances in the pool (default: 24)
   - Set to 3 for CI/test environments (faster initialization)
-  - Set to 8 for production (better parallelism)
+  - Set to 8-24 for production (better parallelism)
   - Example: `PGLITE_POOL_SIZE=8 pnpm dev`
 
 ## Features
@@ -22,4 +22,5 @@ Internal package for executing SQL queries using PGlite (PostgreSQL in WebAssemb
 
 Each PGlite instance uses approximately 256MB of memory. Plan accordingly:
 - 3 instances: ~768MB base memory
-- 8 instances: ~2GB base memory
+- 8 instances: ~2GB base memory
+- 24 instances: ~6GB base memory (default)

frontend/internal-packages/pglite-server/src/PGliteInstanceManager.ts

@@ -13,9 +13,9 @@ export class PGliteInstanceManager {
   private static supportedExtensionsPool: string[][] = []
   private static loadedExtensionsPool: string[][] = []
   private static currentIndex = 0
-  // Pool size configurable via environment variable (default: 3 for CI, 8 for production)
+  // Pool size configurable via environment variable (default: 24 for maximum parallelism)
   private static readonly POOL_SIZE = Number(
-    process.env['PGLITE_POOL_SIZE'] || '3',
+    process.env['PGLITE_POOL_SIZE'] || '24',
   )
 
   /**