feat(packaging) : package YunoHost veille-ia_ynh (packaging v2, helpers 2.1)

- manifest.toml validé contre le schéma officiel manifest.v2.schema.json
  (sources par tag forge avec placeholder sha256 assumé, nodejs 24, ports,
  system_user, install_dir, data_dir, permission privée all_users, SSO)
- Scripts install/remove/upgrade/backup/restore/change_url (bash -n OK) :
  build au fil de l'eau avec BASE_PATH, ALERTS_TOKEN généré à l'install,
  .env chmod 400, logs journald
- conf/nginx.conf : proxy_params_with_auth (header Ynh-User), conf/systemd.service :
  node via __NODEJS_DIR__, sandboxing modéré, conf/env : DATA_DIR/OLLAMA_URL/ALERTS_TOKEN
- tests.toml minimal, doc DESCRIPTION/ADMIN fr+en
- README racine : dev local, variables d'env, procédure de release, Ollama

app/README.md

@@ -1,42 +1,13 @@
-# sv
+# veille-ia — application SvelteKit
 
-Everything you need to build a Svelte project, powered by [`sv`](https://github.com/sveltejs/cli).
+Voir le [README racine](../README.md) pour la vue d'ensemble, le dev local et les variables d'environnement, et [SPECS_SVELTE.md](../SPECS_SVELTE.md) pour les conventions de code (prioritaires sur tout choix frontend).
 
-## Creating a project
-
-If you're seeing this, you've probably already done this step. Congrats!
-
-```sh
-# create a new project
-npx sv create my-app
+```bash
+npm ci
+npm run dev        # dev (DEV_USER=dev dans .env simule le SSO)
+npm run check      # svelte-check — 0 erreur / 0 warning exigé
+npm run lint       # prettier + eslint
+npm run test       # vitest
+npm run build      # build adapter-node (BASE_PATH=/veille pour un sous-chemin)
+node build/index.js
 ```
-
-To recreate this project with the same configuration:
-
-```sh
-# recreate this project
-npx sv@0.17.0 create --template minimal --types ts --add prettier eslint vitest="usages:unit" sveltekit-adapter="adapter:node" --install npm app
-```
-
-## Developing
-
-Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
-
-```sh
-npm run dev
-
-# or start the server and open the app in a new browser tab
-npm run dev -- --open
-```
-
-## Building
-
-To create a production version of your app:
-
-```sh
-npm run build
-```
-
-You can preview the production build with `npm run preview`.
-
-> To deploy your app, you may need to install an [adapter](https://svelte.dev/docs/kit/adapters) for your target environment.