Add server make targets, install script, and .env setup

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Makefile

@@ -1,3 +1,7 @@
+-include .env
+export
+
+# Local dev
 start:
 	docker compose up -d
 
@@ -9,8 +13,19 @@ setup: start install-plugins
 install-plugins:
 	docker exec natascha_grav php /app/www/public/bin/gpm install $(shell cat plugins.txt | tr '\n' ' ') -y
 
+# User repo
 deploy:
 	git subtree push --prefix=user user-deploy main
 
 pull-content:
 	git subtree pull --prefix=user user-deploy main --squash
+
+# Server
+server-install:
+	ssh $(SERVER) "bash -s" < scripts/server-install.sh
+
+server-install-plugins:
+	ssh $(SERVER) "cd $(WEBROOT) && php bin/gpm install $(shell cat plugins.txt | tr '\n' ' ') -y"
+
+server-upgrade-grav:
+	ssh $(SERVER) "cd $(WEBROOT) && php bin/grav upgrade"