Update API target and port configuration; upgrade OpenAI model version

- Changed API proxy target from localhost:5000 to localhost:5500 in both webpack configurations.
- Updated server port from 5000 to 5500 in src/index.js for consistency.
- Upgraded OpenAI model from "gpt-4o-mini" to "gpt-5-mini" in document processing routes, enhancing processing capabilities.

src/index.js

@@ -10,7 +10,7 @@ const dataRoutes = require('./routes/data');
 const dbConfig = require('./config/database');
 
 const app = express();
-const PORT = process.env.PORT || 5000;
+const PORT = process.env.PORT || 5500;
 
 // Middleware
 app.use(cors());

src/routes/data/documentProcessing.js

@@ -178,7 +178,7 @@ router.post('/process-extraction', authenticateToken, async (req, res) => {
         const { kUmsatzBeleg, markDown } = umsatzResult.recordset[0];
         
         const response = await openai.responses.create({
-          model: "gpt-4o-mini",
+          model: "gpt-5-mini",
           input: [
             { "role": "developer", "content": [{ "type": "input_text", "text": `Extract specified information from provided input and structure it in a JSON format. 
 
@@ -228,7 +228,6 @@ router.post('/process-extraction', authenticateToken, async (req, res) => {
               }, "required": ["date", "invoice_number", "net_amounts_and_tax", "gross_amount", "currency", "country", "sender", "creditorID"], "additionalProperties": false }
             }
           },
-          reasoning: { "effort": "medium", "summary": "auto" },
           tools: [],
           store: false
         });
@@ -250,7 +249,7 @@ router.post('/process-extraction', authenticateToken, async (req, res) => {
         const { kPdfObjekt, markDown } = pdfResult.recordset[0];
         
         const response = await openai.responses.create({
-          model: "gpt-4o-mini",
+          model: "gpt-5-mini",
           input: [
             { "role": "developer", "content": [{ "type": "input_text", "text": `Extract specified information from provided input and structure it in a JSON format. 
 
@@ -300,7 +299,6 @@ router.post('/process-extraction', authenticateToken, async (req, res) => {
               }, "required": ["date", "invoice_number", "net_amounts_and_tax", "gross_amount", "currency", "country", "sender", "creditorID"], "additionalProperties": false }
             }
           },
-          reasoning: { "effort": "medium", "summary": "auto" },
           tools: [],
           store: false
         });

webpack.config.js

@@ -75,7 +75,7 @@ module.exports = {
     },
     proxy: {
       '/api': {
-        target: 'http://localhost:5000',
+        target: 'http://localhost:5500',
         changeOrigin: true,
       },
     },

webpack.prod.config.js

@@ -85,7 +85,7 @@ module.exports = {
     },
     proxy: {
       '/api': {
-        target: 'http://localhost:5000',
+        target: 'http://localhost:5500',
         changeOrigin: true,
       },
     },