Add Firestore security rules and deployment scripts

- Add firestore.rules for SMTP config permissions
- Add deployment scripts for Firestore rules
- Update Admin component with better error handling
- Update README with deployment instructions

deploy-firestore-rules.bat

@@ -0,0 +1,46 @@
+@echo off
+echo 🚀 Deploying Firestore Security Rules...
+echo.
+
+REM Check if Firebase CLI is installed
+firebase --version >nul 2>&1
+if %errorlevel% neq 0 (
+    echo ❌ Firebase CLI is not installed. Please install it first:
+    echo npm install -g firebase-tools
+    pause
+    exit /b 1
+)
+
+REM Check if user is logged in
+firebase projects:list >nul 2>&1
+if %errorlevel% neq 0 (
+    echo 🔐 Please login to Firebase first:
+    echo firebase login
+    pause
+    exit /b 1
+)
+
+echo 📋 Available Firebase projects:
+firebase projects:list
+echo.
+echo 🔗 Make sure you're using the correct project (prayer-app-6701f)
+echo If not, run: firebase use prayer-app-6701f
+echo.
+pause
+
+REM Deploy the rules
+echo 📤 Deploying Firestore security rules...
+firebase deploy --only firestore:rules
+
+if %errorlevel% equ 0 (
+    echo.
+    echo ✅ Firestore security rules deployed successfully!
+    echo You can now save SMTP configuration in the admin panel.
+) else (
+    echo.
+    echo ❌ Failed to deploy Firestore rules. Please check the error messages above.
+    pause
+    exit /b 1
+)
+
+pause