Simplify monorepo setup

Remove concurrently and unused root dependencies. Update postinstall
script to install dependencies directly within sub-packages.

Add a check for process.stdin in the server REPL to prevent errors
when run without an available input stream.

package.json

@@ -3,20 +3,10 @@
 	"license": "ComtyLicense",
 	"private": true,
 	"scripts": {
-		"dev": "concurrently -k \"yarn dev:client\" \"yarn dev:server\"",
+		"dev": "npm run dev:client & npm run dev:server",
 		"dev:server": "cd packages/server && npm run dev",
 		"dev:client": "cd packages/app && npm run dev",
-		"postinstall": "node ./scripts/post-install.js"
-	},
-	"dependencies": {
-		"7zip-min": "1.4.3",
-		"@ragestudio/hermes": "^1.0.0",
-		"axios": "^1.4.0",
-		"concurrently": "^7.5.0",
-		"dotenv": "16.0.3",
-		"form-data": "^4.0.0",
-		"mintlify": "^4.0.206",
-		"octokit": "^2.0.14"
+		"postinstall": "cd packages/app && npm install && cd ../server && npm install"
 	},
 	"_web_app_path": "packages/app"
 }

packages/server/gateway/repl.js

@@ -5,6 +5,13 @@ export default class RELP {
 	}
 
 	initCommandLine() {
+		if (!process.stdin) {
+			console.error(
+				"Failed to initialize command line: stdin is not available",
+			)
+			return null
+		}
+
 		// Configure line-by-line input mode
 		process.stdin.setEncoding("utf8")
 		process.stdin.resume()