fix: load thread dir env var after server start

Since the THREADS_DIR environment variable is retrieved on package
import, changes that dependents make to it before startAppServer is
called are ignored. To fix this, load the environment variable
immediately before it's used instead.

Signed-off-by: Nick Hale <[email protected]>

Author: njhale

server/app.mjs

@@ -13,7 +13,6 @@ const AGENT = 1;
 const USER = 2;
 const STATE_FILE = "state.json";
 const DISABLE_CACHE = process.env.DISABLE_CACHE === "true";
-let THREADS_DIR = process.env.THREADS_DIR || "";
 let runningScript = null;
 let serverRunning = false;
 
@@ -85,6 +84,7 @@ const mount = async (file, tool, args, workspace, socket, threadID, gptscript) =
 
     let state = {};
     let statePath = '';
+    let THREADS_DIR = process.env.THREADS_DIR
     if (!THREADS_DIR) THREADS_DIR = path.join(workspace, "threads");
     if (threadID) statePath = path.join(THREADS_DIR, threadID, STATE_FILE);
     try {