refactoring the api endpoints to be separate files to reduce context usage

apps/server/src/routes/fs/routes/validate-path.ts

@@ -0,0 +1,50 @@
+/**
+ * POST /validate-path endpoint - Validate and add path to allowed list
+ */
+
+import type { Request, Response } from "express";
+import fs from "fs/promises";
+import path from "path";
+import { addAllowedPath, isPathAllowed } from "../../../lib/security.js";
+import { getErrorMessage, logError } from "../common.js";
+
+export function createValidatePathHandler() {
+  return async (req: Request, res: Response): Promise<void> => {
+    try {
+      const { filePath } = req.body as { filePath: string };
+
+      if (!filePath) {
+        res.status(400).json({ success: false, error: "filePath is required" });
+        return;
+      }
+
+      const resolvedPath = path.resolve(filePath);
+
+      // Check if path exists
+      try {
+        const stats = await fs.stat(resolvedPath);
+
+        if (!stats.isDirectory()) {
+          res
+            .status(400)
+            .json({ success: false, error: "Path is not a directory" });
+          return;
+        }
+
+        // Add to allowed paths
+        addAllowedPath(resolvedPath);
+
+        res.json({
+          success: true,
+          path: resolvedPath,
+          isAllowed: isPathAllowed(resolvedPath),
+        });
+      } catch {
+        res.status(400).json({ success: false, error: "Path does not exist" });
+      }
+    } catch (error) {
+      logError(error, "Validate path failed");
+      res.status(500).json({ success: false, error: getErrorMessage(error) });
+    }
+  };
+}