debut changement vers google drive

app/.env.example

@@ -88,17 +88,28 @@ DISCORD_CLIENT_SECRET=
 DISCORD_REDIRECT_URI=https://your-domain/auth/discord/callback
 
 # =============================================================================
-# Optional — storage
+# Contract storage — Google Drive
 # =============================================================================
 
-# Where uploaded contracts live. Empty means `documents/` beside the
-# application. Set it to a path OUTSIDE the deployment directory if you move
-# to a release-directory layout, or a deployment will take the documents with
-# it (OPS-011, app/storage.py).
-#
-# IMPORTANT: the backup script reads this same variable. Before wave J it
-# did not, and archived `./documents` regardless — so setting this here and
-# nowhere else produced empty contract backups that still exited 0.
+# New contracts are uploaded to the owner's Google Drive. The OAuth client,
+# refresh token, and folder ID are secrets/configuration: do not commit them.
+# Use `local` only for isolated development and legacy-file maintenance.
+DOCUMENT_STORAGE_BACKEND=google_drive
+
+# Target folder in the owner's personal Drive. The application keeps every
+# contract directly in this folder and stores only each Drive file ID in the
+# database.
+GOOGLE_DRIVE_FOLDER_ID=
+
+# OAuth 2.0 credentials for the owner's Google account. Create a Google Cloud
+# Desktop OAuth client, authorize the Drive scope once, and place the resulting
+# refresh token here. See docs/deployment.md before enabling this in production.
+GOOGLE_DRIVE_CLIENT_ID=
+GOOGLE_DRIVE_CLIENT_SECRET=
+GOOGLE_DRIVE_REFRESH_TOKEN=
+
+# Local storage is retained only for historical rows and local test runs.
+# It is not used for new contracts while DOCUMENT_STORAGE_BACKEND=google_drive.
 DOCUMENTS_ROOT=
 
 # Where the log files go. Empty means `logs/` beside the application. Both