docs(vt): record the UtilityBelt and Mag-Tools source references supplied by the owner

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

docs/plans/2026-09-06-campaign-vt-vtank-oracle.md

@@ -34,7 +34,7 @@ PowerShell reflection.
 | `refs/vtank/uTank2.Resources.defaultsettings.usd` (+ `defaultsettingstemplate.usd`, `defaultinfodb.ugd`, `defaultitemagedb.ugd`, `CustomIcons.RES`, `dc.xml`) | Default profile (the 137 options), templates, databases. |
 | `refs/vvs/decompiled/` + `refs/vvs/resources/` | VirindiViewService: control semantics (`HudList`, `HudCombo`, `HudTabView`…), themes (`Float_Theme.cs` is the default when the registry names none; `Decal_Theme.cs` is the retail-textured one), theme images. Reference only. |
 | `refs/vtank-classiclooter/decompiled/` | 53 `.cs`, real names: `LootCore`, `cLootItemRule`, `UTLBlock_*`, `UTLFileExtraBlockManager`, `ComputedItemInfo`, `GameInfo`. |
-| Open source | UtilityBelt (`C:\Users\erikn\source\repos\utilitybelt.service` / gitlab), Mag-Tools (`C:\Users\erikn\source\repos\Mag-Plugins`). |
+| Open source (owner-supplied references, 2026-09-06) | UtilityBelt: plugin source `https://gitlab.com/utilitybelt/utilitybelt` (grammar `UtilityBelt/Lib/Expressions/MetaExpressions.g4`), docs site source `git@gitlab.com:utilitybelt/utilitybelt.gitlab.io.git` (the expressions/commands documentation), local `C:\Users\erikn\source\repos\utilitybelt.service`. Mag-Tools: `https://github.com/Mag-nus/Mag-Plugins/tree/master/Mag-Tools`, local `C:\Users\erikn\source\repos\Mag-Plugins`. Read as source, never decompiled. |
 
 Rules for using it: cite `file:line` in the catalog and in code comments; never
 paste decompiled code into the repo; behavior is re-implemented in our own