docs: clarify the INSTALL_* variables are Deployment Helper inputs and list the system:install options

guides/hosting/installation-updates/deployments/deployment-helper/environment.md

@@ -15,7 +15,7 @@ Deployment Helper requires a working MySQL/MariaDB database that is:
 - **Writable** with permissions to create tables and insert data
 - **Compatible** with the Shopware version being deployed
 
-Deployment Helper does not require an existing schema; if the database is empty, it creates everything via `system:install`.
+Deployment Helper does not require an existing schema; if the database is empty, it runs `system:install` and then the initial setup described under [What gets created on fresh install](#what-gets-created-on-fresh-install).
 
 Detection: Shopware is considered "installed" if all three exist:
 
@@ -27,17 +27,16 @@ If the database has the schema but no users or sales channels, DH treats it as n
 
 ## What gets created on fresh install
 
-When Deployment Helper runs `system:install` on a fresh database, it creates:
+When Deployment Helper installs Shopware on a fresh database, it runs `system:install` (it creates the schema, applies the shop locale and currency, and runs core setup such as migrations, asset installation and theme compilation) and then creates the following with separate console commands:
 
-- Database schema (all Shopware tables)
 - One admin user with credentials from environment variables:
   - Username: `INSTALL_ADMIN_USERNAME` (default: `admin`)
   - Password: `INSTALL_ADMIN_PASSWORD` (default: `shopware`; change this!)
   - Email: `INSTALL_ADMIN_EMAIL` (optional, defaults to empty)
-- One Storefront sales channel (customer-facing shop):
+- One Storefront sales channel (customer-facing shop, only if the Storefront is installed and no sales channel with that URL exists yet):
   - Name: `Storefront`
-  - URL: `SALES_CHANNEL_URL` or `APP_URL` (defaults to `http://localhost`)
-- Default theme assignment (Shopware's Storefront theme)
+  - URL: `SALES_CHANNEL_URL` or `APP_URL`; if neither is set, an empty URL is passed to `sales-channel:create:storefront`
+- Default theme assignment (Shopware's Storefront theme, only if the Storefront is installed)
 - Messenger transport tables and queues
 - All configured plugins and apps (unless excluded)
 
@@ -49,16 +48,16 @@ Configure the Shopware installation and Deployment Helper via environment variab
 
 ### Installation and initial setup
 
-These variables apply only on **fresh installation** (`system:install`):
+These variables are read by Deployment Helper, not by `bin/console system:install` itself, and apply only on a **fresh installation**. Deployment Helper passes `INSTALL_LOCALE` and `INSTALL_CURRENCY` on to `system:install` as the `--shop-locale` and `--shop-currency` options. For the other options of the command, see the [commands reference](../../../../../resources/references/core-reference/commands-reference.md#system):
 
 | Variable                 | Default            | Purpose                                                       |
 | ------------------------ | ------------------ | ------------------------------------------------------------- |
 | `INSTALL_LOCALE`         | `en-GB`            | Locale for the shop (e.g., `de-DE`, `fr-FR`)                  |
-| `INSTALL_CURRENCY`       | `EUR`              | Currency for the first sales channel                          |
+| `INSTALL_CURRENCY`       | `EUR`              | Default currency of the shop (`--shop-currency`)              |
 | `INSTALL_ADMIN_USERNAME` | `admin`            | Username of the initial admin user                            |
 | `INSTALL_ADMIN_PASSWORD` | `shopware`         | Password for the initial admin user                           |
 | `INSTALL_ADMIN_EMAIL`    | *(empty)*          | Email address of the admin user                               |
-| `SALES_CHANNEL_URL`      | `http://localhost` | URL of the Storefront sales channel                           |
+| `SALES_CHANNEL_URL`      | *(not set)*        | URL of the Storefront sales channel; `APP_URL` if unset       |
 | `APP_URL`                | *(not set)*        | Fallback URL for Storefront if `SALES_CHANNEL_URL` is not set |
 
 :::warning

resources/references/core-reference/commands-reference.md

@@ -394,6 +394,19 @@ Generating the skeletons and essential files needed to create and structure a Sh
 | `system:update:finish`       | Finishes the update process                                                        |
 | `system:update:prepare`      | Prepares the update process                                                        |
 
+The `system:install` command accepts the following options (as of Shopware 6.7). Run `bin/console system:install --help` to list the options of your installed version.
+
+| Option                                                            | Description                                                           |
+| :---------------------------------------------------------------- | :-------------------------------------------------------------------- |
+| `--create-database`                                               | Creates the database if it does not exist                             |
+| `--drop-database`                                                 | Drops the existing database first                                     |
+| `--basic-setup`                                                   | Creates a Storefront sales channel and an admin user                  |
+| `-f`, `--force`                                                   | Installs even if `install.lock` exists                                |
+| `--no-assign-theme`                                               | Does not assign the default theme                                     |
+| `--shop-name`, `--shop-email`, `--shop-locale`, `--shop-currency` | Name, email address, default locale and ISO currency code of the shop |
+| `--skip-assets-install`                                           | Skips installing the assets                                           |
+| `--skip-first-run-wizard`                                         | Skips the first run wizard                                            |
+
 ### Theme
 
 | Command               | Description                                  |