Move Custom Scripts out of the repo and add an Import Script picker

Custom Scripts (the Scheduler page's inline editor) used to save into the
git-tracked Custom/ folder, so anything saved there would end up on GitHub.
They now live in /boot/config/plugins/user.scripts/Varaverk/Scripts, same
folder family as Unraid's own User Scripts plugin. Import Script lets you
browse the whole server and move an existing script in instead of only
creating new ones inline — always a move, never a copy, so no stray
duplicate is left where it came from.

Plugin/Manual-Plugin.md

@@ -73,8 +73,8 @@ to Community Applications.
 
 ## ━━━ SCRIPTS DIRECTORY SETTING ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 
-`SCRIPTS_DIR` is the only plugin-level setting. It tells the plugin where to find the
-Configurations directory and all scripts.
+`SCRIPTS_DIR` tells the plugin where to find the Configurations directory and all
+repo scripts.
 
 **Set it via:** Settings → Other Settings → Varaverk → Scripts directory
 
@@ -88,6 +88,18 @@ SCRIPTS_DIR="/boot/config/plugins/varaverk"
 
 All other configuration lives in `Configurations/master.conf` and `Configurations/host*.conf`.
 
+`CUSTOM_SCRIPTS_DIR` is a separate, optional override for where the Scheduler tab's
+Custom Scripts feature reads/writes user-authored scripts (see Manual.md → Custom
+Scripts). It's intentionally **not** under `SCRIPTS_DIR` — Custom Scripts are personal,
+non-repo tooling and must never end up inside the git-tracked plugin folder.
+
+Default: `/boot/config/plugins/user.scripts/Varaverk/Scripts`
+
+```bash
+# in varaverk.cfg, alongside SCRIPTS_DIR
+CUSTOM_SCRIPTS_DIR="/boot/config/plugins/user.scripts/Varaverk/Scripts"
+```
+
 ---
 
 ## ━━━ REPO MOVE PROCEDURE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━