refactor : reorganize infra files into infra/dev and infra/prod

Consolidate Docker, Nginx, and deploy configs from 5 scattered directories
(docker/, deploy/docker/, deploy/nginx/, script/) into a single infra/ tree
with dev/ and prod/ subdirectories. Update all references in docker-compose,
Makefile, CI workflows, Dockerfiles, and documentation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -2,7 +2,7 @@ services:
   php:
     container_name: php-${DOCKER_APP_NAME}-fpm
     build:
-      context: ./docker/php
+      context: ./infra/dev
       dockerfile: Dockerfile
       args:
         DOCKER_PHP_VERSION: ${DOCKER_PHP_VERSION}
@@ -21,8 +21,8 @@ services:
       - ~/.cache:/var/www/.cache # Pour la cache de composer
       - ~/.config:/var/www/.config # Pour la config de yarn
       - ~/.composer:/var/www/.composer # Pour la config de composer
-      - ./docker/php/config/php.ini:/usr/local/etc/php/php.ini
-      - ./docker/php/config/docker-php-ext-xdebug.ini:/usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
+      - ./infra/dev/php.ini:/usr/local/etc/php/php.ini
+      - ./infra/dev/xdebug.ini:/usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
       - ./LOG:/var/www/html/LOG
       - uploads_data:/var/www/html/var/uploads
     extra_hosts:
@@ -41,7 +41,7 @@ services:
       - "8082:80"
     volumes:
       - ./:/var/www/html:ro
-      - ./docker/nginx/conf.d:/etc/nginx/conf.d:ro
+      - ./infra/dev/nginx.conf:/etc/nginx/conf.d/lesstime.conf:ro
     restart: unless-stopped
   db:
     image: postgres:16-alpine