Add automatic port selection to avoid conflicts

Instead of stopping existing processes, setup scripts now automatically
find and use alternative ports if defaults are in use.

Features:
- Automatically detects port conflicts
- Finds next available port (e.g., 8080 -> 8081 -> 8082...)
- Writes custom ports to .env file
- Shows which ports were reassigned
- Displays correct URLs at end of setup
- Zero user interaction needed

Implementation:
- setup.bat: Uses netstat and batch functions to find free ports
- setup.sh: Uses lsof/netstat and bash functions to find free ports
- Ports checked: APP_PORT, MAIL_DASHBOARD_PORT, MAIL_PORT, REDIS_PORT, DB_PORT
- All ports written to src/.env for docker-compose to use

Example output:
  [OK] Port 8080 (Web Server) - Available
  [!] Port 8025 in use - using 8026 for Mailpit Dashboard

  Your app will be at: http://localhost:8080
  Mailpit at: http://localhost:8026

This ensures setup never fails due to port conflicts and doesn't
disrupt existing services.

setup.bat

@@ -24,53 +24,74 @@ echo.
 echo Setting up with %DB%...
 echo.
 
-REM Step 1: Check port availability
+REM Step 1: Check port availability and auto-assign alternatives
 echo Checking port availability...
-set PORTS_OK=1
 
-REM Check port 8080 (Nginx)
+REM Function to find next available port
+REM Usage: call :find_port <start_port> <result_var>
+goto :skip_functions
+
+:find_port
+set /a port=%~1
+:find_port_loop
+netstat -ano | findstr ":%port% " >nul 2>&1
+if %errorlevel% equ 0 (
+    set /a port+=1
+    goto :find_port_loop
+)
+set %~2=%port%
+exit /b 0
+
+:skip_functions
+
+REM Check and assign APP_PORT (Web Server)
 netstat -ano | findstr ":8080" >nul 2>&1
 if %errorlevel% equ 0 (
-    echo [X] Port 8080 ^(Web Server^) - IN USE
-    set PORTS_OK=0
+    call :find_port 8081 APP_PORT
+    echo [!] Port 8080 in use - using !APP_PORT! for Web Server
 ) else (
+    set APP_PORT=8080
     echo [OK] Port 8080 ^(Web Server^) - Available
 )
 
-REM Check port 8025 (Mailpit Dashboard)
+REM Check and assign MAIL_DASHBOARD_PORT (Mailpit Dashboard)
 netstat -ano | findstr ":8025" >nul 2>&1
 if %errorlevel% equ 0 (
-    echo [X] Port 8025 ^(Mailpit Dashboard^) - IN USE
-    set PORTS_OK=0
+    call :find_port 8026 MAIL_DASHBOARD_PORT
+    echo [!] Port 8025 in use - using !MAIL_DASHBOARD_PORT! for Mailpit Dashboard
 ) else (
+    set MAIL_DASHBOARD_PORT=8025
     echo [OK] Port 8025 ^(Mailpit Dashboard^) - Available
 )
 
-REM Check port 1025 (Mailpit SMTP)
+REM Check and assign MAIL_PORT (Mailpit SMTP)
 netstat -ano | findstr ":1025" >nul 2>&1
 if %errorlevel% equ 0 (
-    echo [X] Port 1025 ^(Mailpit SMTP^) - IN USE
-    set PORTS_OK=0
+    call :find_port 1026 MAIL_PORT
+    echo [!] Port 1025 in use - using !MAIL_PORT! for Mailpit SMTP
 ) else (
+    set MAIL_PORT=1025
     echo [OK] Port 1025 ^(Mailpit SMTP^) - Available
 )
 
-REM Check port 6379 (Redis)
+REM Check and assign REDIS_PORT
 netstat -ano | findstr ":6379" >nul 2>&1
 if %errorlevel% equ 0 (
-    echo [X] Port 6379 ^(Redis^) - IN USE
-    set PORTS_OK=0
+    call :find_port 6380 REDIS_PORT
+    echo [!] Port 6379 in use - using !REDIS_PORT! for Redis
 ) else (
+    set REDIS_PORT=6379
     echo [OK] Port 6379 ^(Redis^) - Available
 )
 
-REM Check database port based on selection
+REM Check and assign DB_PORT based on database selection
 if "%DB%"=="mysql" (
     netstat -ano | findstr ":3306" >nul 2>&1
     if !errorlevel! equ 0 (
-        echo [X] Port 3306 ^(MySQL^) - IN USE
-        set PORTS_OK=0
+        call :find_port 3307 DB_PORT
+        echo [!] Port 3306 in use - using !DB_PORT! for MySQL
     ) else (
+        set DB_PORT=3306
         echo [OK] Port 3306 ^(MySQL^) - Available
     )
 )
@@ -78,39 +99,28 @@ if "%DB%"=="mysql" (
 if "%DB%"=="pgsql" (
     netstat -ano | findstr ":5432" >nul 2>&1
     if !errorlevel! equ 0 (
-        echo [X] Port 5432 ^(PostgreSQL^) - IN USE
-        set PORTS_OK=0
+        call :find_port 5433 DB_PORT
+        echo [!] Port 5432 in use - using !DB_PORT! for PostgreSQL
     ) else (
+        set DB_PORT=5432
         echo [OK] Port 5432 ^(PostgreSQL^) - Available
     )
 )
 
-REM Handle port conflicts
-if %PORTS_OK% equ 0 (
-    echo.
-    echo WARNING: Some required ports are already in use!
-    echo.
-    echo To find what's using a port:
-    echo   netstat -ano ^| findstr ":PORT"
-    echo.
-    echo To stop a process using a port:
-    echo   1. Find the PID from netstat output
-    echo   2. taskkill /PID [PID] /F
-    echo.
-    choice /C YN /M "Do you want to continue anyway"
-    if errorlevel 2 (
-        echo Setup cancelled.
-        exit /b 1
-    )
-    echo.
-    echo Continuing with setup...
-)
 echo.
 
 REM Step 2: Configure environment
 echo Configuring environment...
 if exist "src\.env.%DB%" (
     copy /y "src\.env.%DB%" "src\.env" >nul
+    
+    REM Append port configurations to .env
+    echo APP_PORT=%APP_PORT% >> src\.env
+    echo MAIL_DASHBOARD_PORT=%MAIL_DASHBOARD_PORT% >> src\.env
+    echo MAIL_PORT=%MAIL_PORT% >> src\.env
+    echo REDIS_PORT=%REDIS_PORT% >> src\.env
+    if defined DB_PORT echo DB_PORT=%DB_PORT% >> src\.env
+    
     echo Environment configured for %DB%
 ) else (
     echo ERROR: Template file src\.env.%DB% not found
@@ -181,9 +191,9 @@ echo ========================================================
 echo.
 echo Your Laravel application is ready!
 echo.
-echo   Laravel App:  http://localhost:8080
-echo   Admin Panel:  http://localhost:8080/admin
-echo   Mailpit:      http://localhost:8025
+echo   Laravel App:  http://localhost:%APP_PORT%
+echo   Admin Panel:  http://localhost:%APP_PORT%/admin
+echo   Mailpit:      http://localhost:%MAIL_DASHBOARD_PORT%
 echo.
 echo Admin Login:
 echo   Email:    admin@example.com