chore : rename Coltura to Starseed

- Rename project name across code, configs, docs, dev/prod infra
- Dev: DOCKER_APP_NAME + POSTGRES_DB switched to starseed, containers become php-starseed-fpm / nginx-starseed / starseed-db-1
- Dev: mount nginx.conf on default.conf instead of starseed.conf to avoid alphabetical-order clash with image's default site
- Makefile: export CURRENT_UID/CURRENT_GID at top level so docker compose builds (db-reset etc.) get them
- Prod: image registry path, container_name, volumes, vhost server_name + paths, DATABASE_URL, CORS, CI workflow
- Add doc/prompt-rename-prod.md with the migration runbook for the prod server (DB rename, FS move, vhost, Let's Encrypt)

CLAUDE.md

@@ -1,4 +1,4 @@
-# Coltura
+# Starseed
 
 ## Contexte
 CRM/ERP en architecture **modular monolith DDD**. Le backend est la source de verite unique (modules actifs, sidebar). Le frontend scanne `frontend/modules/*/` comme layers Nuxt et consomme l'API pour la navigation. Multi-tenant : chaque module est activable/desactivable.
@@ -9,7 +9,7 @@ Doc humaine : @README.md — Spec audit : @doc/audit-log.md
 - Backend : PHP 8.4, Symfony 8, API Platform 4, Doctrine ORM, PostgreSQL 16 (port 5437)
 - Frontend : Nuxt 4 (SPA), Vue 3, Pinia, Tailwind, @malio/layer-ui, @nuxtjs/i18n
 - Auth : JWT HTTP-only cookie (Lexik), login a `/login_check`
-- Containers : `php-coltura-fpm`, `nginx-coltura` (port 8083), dev Nuxt port **3004**
+- Containers : `php-starseed-fpm`, `nginx-starseed` (port 8083), dev Nuxt port **3004**
 
 ## Regles ABSOLUES