feat: max-bot-test initial — full surface coverage

- Slim 4 PSR-15 webhook, PHP-DI 7, Symfony Console 8
- 13 update handlers, 30+ command scenarios, all 7 button types
- Composer pulls pkirillw/max-bot-api-php from GitHub vcs
- Multi-stage Dockerfile (php-fpm 8.4-alpine) + nginx
- docker-compose.yml targets server (npm_default external)
- docker-compose.override.yml for local dev (gitignored)
- .gitea/workflows/deploy.yml mirrors ghost-blog-bot pattern

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Makefile

@@ -0,0 +1,63 @@
+SHELL := /bin/bash
+COMPOSE := docker compose
+PHP := $(COMPOSE) exec app php
+COMPOSER := $(COMPOSE) run --rm app composer
+
+.PHONY: help up down build install composer update subscribe unsubscribe selftest logs ps test clean
+
+help:
+	@echo "Bot commands:"
+	@echo "  make build          — build docker images"
+	@echo "  make up             — start nginx + php-fpm"
+	@echo "  make down           — stop containers"
+	@echo "  make install        — composer install (first time)"
+	@echo "  make update         — composer update"
+	@echo "  make subscribe      — register webhook with MAX (uses WEBHOOK_URL)"
+	@echo "  make unsubscribe    — remove webhook"
+	@echo "  make selftest       — run smoke tests across all endpoint groups"
+	@echo "  make bot-info       — print BotInfo JSON"
+	@echo "  make logs           — tail app + nginx logs"
+	@echo "  make test           — run PHPUnit"
+
+build:
+	$(COMPOSE) build
+
+up:
+	$(COMPOSE) up -d
+
+down:
+	$(COMPOSE) down
+
+install:
+	$(COMPOSE) run --rm app composer install
+
+composer:
+	$(COMPOSER) $(CMD)
+
+update:
+	$(COMPOSE) run --rm app composer update
+
+subscribe:
+	$(PHP) bin/console webhook:subscribe
+
+unsubscribe:
+	$(PHP) bin/console webhook:unsubscribe
+
+selftest:
+	$(PHP) bin/console selftest
+
+bot-info:
+	$(PHP) bin/console bot:info
+
+ps:
+	$(COMPOSE) ps
+
+logs:
+	$(COMPOSE) logs -f app nginx
+
+test:
+	$(COMPOSE) run --rm app vendor/bin/phpunit
+
+clean:
+	$(COMPOSE) down -v
+	rm -rf vendor