Working version before modification.

src/routes/configRoutes.js

@@ -2,9 +2,11 @@ import { Router } from 'express';
 
 import {
   getAppConfig,
+  getAppConfigValue,
   getExportProfile,
   getImageRules,
-  updateImageRules
+  updateImageRules,
+  upsertAppConfig
 } from '../services/configService.js';
 import { logAuditEvent } from '../services/auditService.js';
 import { asyncHandler } from '../utils/asyncHandler.js';
@@ -154,4 +156,36 @@ router.get(
   })
 );
 
+router.get(
+  '/app-config/:key',
+  asyncHandler(async (req, res) => {
+    const value = await getAppConfigValue(req.params.key);
+
+    if (value === null) {
+      return res.status(404).json({ message: 'Config key not found.' });
+    }
+
+    return res.json({ key: req.params.key, value });
+  })
+);
+
+router.put(
+  '/app-config/:key',
+  asyncHandler(async (req, res) => {
+    const key = req.params.key;
+
+    if (!key || typeof key !== 'string' || key.length > 100) {
+      return res.status(400).json({ message: 'Invalid config key.' });
+    }
+
+    if (req.body?.value === undefined) {
+      return res.status(400).json({ message: 'Request body must include a value property.' });
+    }
+
+    const result = await upsertAppConfig(key, req.body.value);
+    configCache.invalidate(key);
+    return res.json(result);
+  })
+);
+
 export default router;