refactor(compute-worker): improve docstore directory resolution logic

Update resolveDocstoreDir to handle multiple environments:
- Prefer monorepo root for local development
- Check process.env.PWD for containerized bootstrap
- Fallback to standard /app/docstore path
- Default to process cwd

Enhances robustness of docstore path resolution across deployment scenarios.

packages/compute-worker/src/infrastructure/platform.ts

@@ -14,8 +14,23 @@ function findMonorepoRoot(startDir: string): string | null {
 }
 
 function resolveDocstoreDir(): string {
+  // 1. Try to find the monorepo root (works in local development)
   const repoRoot = findMonorepoRoot(process.cwd());
   if (repoRoot) return path.join(repoRoot, 'docstore');
+
+  // 2. In a containerized environment, the parent bootstrap process runs in /app
+  // and the child process inherits process.env.PWD = '/app'.
+  if (process.env.PWD) {
+    const pwdDocstore = path.join(process.env.PWD, 'docstore');
+    if (fs.existsSync(pwdDocstore)) return pwdDocstore;
+  }
+
+  // 3. Fallback to the standard container app docstore path if it exists
+  if (fs.existsSync('/app/docstore')) {
+    return '/app/docstore';
+  }
+
+  // 4. Fallback to the process cwd docstore
   return path.join(process.cwd(), 'docstore');
 }