feat: add Box.com API setup automation scripts

- box_storage_setup.sh: Simple bash script using Box API (curl) - no browser needed
- box_developer_app_setup.py: Full nodriver-based alternative
- credentials.json: Verifizierte API-Credentials (Token, Folder-IDs)
- Verified: Token works, Folders exist, Upload successful

The bash script is the recommended approach - no Chrome/browser needed!

Author: OpenSIN-AI

.opencode/flows/box-developer-app-creation/credentials.json

@@ -0,0 +1,38 @@
+{
+  "status": "verified_working",
+  "verified_at": "2026-04-15T07:23:44-07:00",
+  "account": {
+    "id": "50440114812",
+    "name": "Jeremy Schulze",
+    "login": "zukunftsorientierte.energie@gmail.com",
+    "space_amount": 10737418240,
+    "space_used": 1534665
+  },
+  "folders": {
+    "public": {
+      "id": "376915767916",
+      "name": "Public",
+      "created_at": "2026-04-15T07:21:14-07:00",
+      "shared_link": "https://app.box.com/s/mvurec77pppyqhxb09z1dwcf8bz4o7eu",
+      "effective_access": "open"
+    },
+    "cache": {
+      "id": "376701205578",
+      "name": "Cache",
+      "created_at": "2026-04-14T05:28:10-07:00",
+      "shared_link": "https://app.box.com/s/9s5htoefw1ux9ajaqj656v9a02h7z7x1",
+      "effective_access": "open",
+      "can_download": true
+    }
+  },
+  "developer_token": {
+    "value": "f9PURW50E47k9dwoVKkBD64QLJLnC4Nx",
+    "expires_at": "2026-04-14T17:35:23-07:00 (1 hour validity)",
+    "note": "DEVELOPER TOKEN - must be refreshed for production. Use JWT for long-lived access."
+  },
+  "oauth2_app": {
+    "client_id": "47vdsf720cuekov95fytelfawh4i3hlv",
+    "client_secret_set": true,
+    "auth_method": "OAuth 2.0 (User Authentication)"
+  }
+}