chore: automate platform installation by running internalai install after setup

Replace manual next steps display with automatic execution of the platform installation command. The installer now runs `internalai install` immediately after CLI installation, with fallback to direct path execution if the command is not in PATH.

install.sh

@@ -822,28 +822,31 @@ install_cli() {
 # Post-Installation
 # ============================================================================
 
-show_next_steps() {
+run_platform_install() {
     log_header "Installation Complete!"
 
     echo -e "${GREEN}${BOLD}The InternalAI platform has been set up successfully!${NC}"
     echo ""
     echo -e "${BOLD}Platform Location:${NC} ${CYAN}$INSTALL_DIR${NC}"
     echo ""
-    echo -e "${BOLD}Next Steps:${NC}"
-    echo ""
-    echo "  1. Configure and start the platform:"
-    echo -e "     ${GREEN}$CLI_NAME install${NC}"
-    echo ""
-    echo "  2. View available commands:"
-    echo -e "     ${GREEN}$CLI_NAME help${NC}"
-    echo ""
-    echo "  3. Check platform status:"
-    echo -e "     ${GREEN}$CLI_NAME status${NC}"
-    echo ""
-    echo -e "${BOLD}Documentation:${NC}"
-    echo "  • Platform docs: $INSTALL_DIR/docs/"
-    echo "  • README: $INSTALL_DIR/README.md"
+
+    log_info "Starting platform configuration and installation..."
     echo ""
+
+    # Run internalai install
+    if command -v "$CLI_NAME" &> /dev/null; then
+        "$CLI_NAME" install
+    else
+        log_error "$CLI_NAME command not found in PATH"
+        log_info "Trying direct path: $CLI_INSTALL_DIR/$CLI_NAME"
+        if [ -x "$CLI_INSTALL_DIR/$CLI_NAME" ]; then
+            "$CLI_INSTALL_DIR/$CLI_NAME" install
+        else
+            log_error "Failed to run $CLI_NAME install"
+            log_info "Please run manually: $CLI_NAME install"
+            exit 1
+        fi
+    fi
 }
 
 # ============================================================================
@@ -858,8 +861,9 @@ main() {
     clone_repository
     configure_git_credentials
     install_cli
-    show_next_steps
+    run_platform_install
 
+    echo ""
     echo -e "${GREEN}${BOLD}Setup completed successfully!${NC}"
     echo ""
 }