Fix executing multiply task at once

[Shironex]

When executing multiply tasks at once sometimes its can leat to error

POST /api/fs/read 500
[Server Error] [FS] ❌ Read file failed: Error: ENFILE: file table overflow, open '/Users/shirone/Documents/Automaker/merge-never/.automaker/categories.json'
at async open (node:internal/fs/promises:639:25)
at async Object.readFile (node:internal/fs/promises:1243:14)
at async (/Users/shirone/Documents/Projekty/automaker-dev/apps/server/src/routes/fs/routes/read.ts:32:23) {
errno: -23,
code: 'ENFILE',
syscall: 'open',
path: '/Users/shirone/Documents/Automaker/merge-never/.automaker/categories.json'
}
[Server Error] [FeatureLoader] Failed to get all features: Error: ENFILE: file table overflow, scandir '/Users/shirone/Documents/Automaker/merge-never/.automaker/features'
at async Object.readdir (node:internal/fs/promises:955:18)
at async FeatureLoader.getAll (/Users/shirone/Documents/Projekty/automaker-dev/apps/server/src/services/feature-loader.ts:183:24)
at async (/Users/shirone/Documents/Projekty/automaker-dev/apps/server/src/routes/features/routes/list.ts:19:24) {
errno: -23,
code: 'ENFILE',
syscall: 'scandir',
path: '/Users/shirone/Documents/Automaker/merge-never/.automaker/features'
}

Causing some task to go back to backlog