fix: align install API request structure with backend expectations

web/src/pages/Install.tsx

@@ -26,9 +26,31 @@ export default function InstallPage({ onInstall }: Props) {
 
     const config = {
       database: dbType === 'sqlite' 
-        ? { type: 'sqlite', sqlite: { path: sqlitePath } }
+        ? { 
-        : { type: 'mysql', mysql: { host: mysqlHost, user: mysqlUser, password: mysqlPass, database: mysqlDb } },
+            type: 'sqlite', 
-      redis: { enabled: redisEnabled, host: redisHost, password: redisPass },
+            host: 'localhost',
+            port: 3306,
+            user: '',
+            password: '',
+            database: '',
+            sqlite: { path: sqlitePath } 
+        }
+        : { 
+            type: 'mysql', 
+            host: mysqlHost.split(':')[0] || 'localhost',
+            port: parseInt(mysqlHost.split(':')[1]) || 3306,
+            user: mysqlUser, 
+            password: mysqlPass, 
+            database: mysqlDb,
+            sqlite: { path: '' }
+        },
+      redis: { 
+        enabled: redisEnabled, 
+        host: redisHost.split(':')[0] || 'localhost',
+        port: parseInt(redisHost.split(':')[1]) || 6379,
+        password: redisPass,
+        db: 0
+      },
       admin: { username: adminUser, password: adminPass }
     }