Update scripts/README.md

scripts/README.md

@@ -13,6 +13,7 @@ Some scripts are desgined to by run **automatically**, while others are intended
 | ------------- | ------- | ------------ |
 | `init.sh` | Prepare Docker volumes and permissions | Automatically by the init container |
 | `backup.sh` | Create and prune server backups | Automatically (e.g. cron/systemd) |
+| `mark_daily_backup.sh` | Create/update daily backup marker | Automatically (e.g. cron/systemd) |
 | `restore.sh` | Restore data from a backup | Manually |
 | `setup.sh` | Configure gamerules, time, weather, gamemode | Manually |
 | `creative` | Gamerule definitions for creative worlds | Read by `setup.sh` |
@@ -59,6 +60,23 @@ This script also handles **automatic pruning of old backups** once a configured
 
 ---
 
+### `mark_daily_backup.sh`
+
+**Purpose:**
+Marks the latest backup as the daily backup.
+
+This script maintains consistency between the two backup tiers: hourly and daily. Hourly backups are created by `backup.sh`, while daily backups are managed by Duplicati.  
+
+To prevent Duplicati from accessing a backup that is still in progress, this script updates an intermediate `daily` marker to point to the most recently completed hourly backup. By the time the scheduled daily job runs, the referenced backup is guaranteed to be complete.
+
+**Execution**
+- Intended to run automatically on a schedule
+- Typically triggered by a **cron job** or **systemd timer**
+- Must be run from the directory containing `compose.yml`
+- Does not take any arguments
+
+---
+
 ### `restore.sh`
 
 **Purpose:**