Fix POSIX shell compatibility in deployment script

- Replace bash-specific &> with >/dev/null 2>&1
- Replace bash-specific == with POSIX-compliant = in [ ] tests
- Script now works with both sh and bash
- Fixes "unexpected operator" errors when run with sh

Issue: User ran script with 'sh' instead of 'bash', causing errors
Root cause: Bash-specific syntax (== and &>) not compatible with POSIX sh
Solution: Use POSIX-compliant alternatives that work in both shells

deploy-to-apps.example.sh

@@ -89,7 +89,7 @@ CONFIG
 # ========================================
 
 # Check if jq is installed
-if ! command -v jq &> /dev/null; then
+if ! command -v jq >/dev/null 2>&1; then
     echo "❌ Error: jq is not installed"
     echo ""
     echo "jq is required for JSON processing. Install it with:"
@@ -105,11 +105,11 @@ fi
 # ========================================
 
 MODE="auto"
-if [ "$1" == "--setup" ]; then
+if [ "$1" = "--setup" ]; then
     MODE="setup"
-elif [ "$1" == "--update" ]; then
+elif [ "$1" = "--update" ]; then
     MODE="update"
-elif [ "$1" == "--status" ]; then
+elif [ "$1" = "--status" ]; then
     MODE="status"
 elif [ -n "$1" ]; then
     echo "❌ Unknown option: $1"
@@ -201,7 +201,7 @@ else
     USER_ID=$(echo "$REGISTER_RESPONSE" | jq -r '.user_id')
     SAAC_API_KEY=$(echo "$REGISTER_RESPONSE" | jq -r '.api_key')
 
-    if [ "$USER_ID" == "null" ] || [ -z "$USER_ID" ] || [ "$SAAC_API_KEY" == "null" ] || [ -z "$SAAC_API_KEY" ]; then
+    if [ "$USER_ID" = "null" ] || [ -z "$USER_ID" ] || [ "$SAAC_API_KEY" = "null" ] || [ -z "$SAAC_API_KEY" ]; then
         echo "❌ Failed to extract user data from registration response"
         echo "Response: $REGISTER_RESPONSE"
         exit 1
@@ -315,7 +315,7 @@ fi
 # Auto-detect Mode
 # ========================================
 
-if [ "$MODE" == "auto" ]; then
+if [ "$MODE" = "auto" ]; then
     if [ -n "$APP_UUID" ]; then
         MODE="update"
     else
@@ -327,7 +327,7 @@ fi
 # Setup Mode: Additional Checks
 # ========================================
 
-if [ "$MODE" == "setup" ]; then
+if [ "$MODE" = "setup" ]; then
     # GITEA_API_TOKEN only required for setup mode (webhook creation)
     if [ -z "$GITEA_API_TOKEN" ]; then
         echo "❌ Error: GITEA_API_TOKEN environment variable not set"
@@ -363,7 +363,7 @@ FULL_DOMAIN="${SUBDOMAIN}recruit.startanaicompany.com"
 # ========================================
 # MODE: STATUS
 # ========================================
-if [ "$MODE" == "status" ]; then
+if [ "$MODE" = "status" ]; then
     echo "========================================="
     echo "  Deployment Status"
     echo "========================================="
@@ -410,7 +410,7 @@ fi
 # ========================================
 # MODE: UPDATE
 # ========================================
-if [ "$MODE" == "update" ]; then
+if [ "$MODE" = "update" ]; then
     echo "========================================="
     echo "  AI Recruitment Site Deployment"
     echo "========================================="
@@ -575,7 +575,7 @@ APP_UUID=$(echo "$APP_RESPONSE" | jq -r '.application_uuid' 2>/dev/null)
 DOMAIN=$(echo "$APP_RESPONSE" | jq -r '.domain' 2>/dev/null)
 WEBHOOK_URL=$(echo "$APP_RESPONSE" | jq -r '.webhook_url' 2>/dev/null)
 
-if [ "$APP_UUID" == "null" ] || [ -z "$APP_UUID" ]; then
+if [ "$APP_UUID" = "null" ] || [ -z "$APP_UUID" ]; then
     echo "❌ Failed to create application"
     echo "Response: $APP_RESPONSE"
     exit 1
@@ -612,7 +612,7 @@ WEBHOOK_RESPONSE=$(curl -s -X POST "${GITEA_API}/repos/${GITEA_USERNAME}/${GITEA
 
 WEBHOOK_ID=$(echo "$WEBHOOK_RESPONSE" | jq -r '.id' 2>/dev/null)
 
-if [ "$WEBHOOK_ID" == "null" ] || [ -z "$WEBHOOK_ID" ]; then
+if [ "$WEBHOOK_ID" = "null" ] || [ -z "$WEBHOOK_ID" ]; then
     echo "⚠️  Warning: Failed to create Gitea webhook (may already exist)"
 else
     echo "✅ Webhook configured for automatic deployments"