fix(vtank): slice 7 round F item 3 — Items tab is VTank only

Owner's second live look: "On items tab, we show some options there
right of the items we add. That should not be there. Remove that."
VTank's real Items tab is exactly 6 controls (docs/research/vtank-kb/
08-ui-views.md §1 "Tab: Items" — 2 labels, the 2-column
clWeaponName/clHandedness list, Add, Add (no buffs)); mosstank.xml's
Items group also carried a right-of-list block with no VTank
counterpart: the Weapon/Offhand readout (MonsterEquipmentText), the
Refill Worn Mana toggle + slider + its two status labels
(RefillWornManaText/ItemManaRechargeStatus), and the ProfileNotice
hint label. All five are deleted from the markup.

The pre-existing "Remove" button stays — it traces back to the
plugin's very first automation PoC commit (`4e6e9bc9d`, long before
Campaign VT slice 7 existed), the accepted "slice-1 Delete" carried
forward per the round's own scope.

RefillWornMana/RefillWornMana-Item-ManaPercent are real
VtankOptionCatalog entries (Bool/Int, not tString) — nothing was
deleted from the plugin, they remain real settings, still editable in
the Advanced Options popup or via `/vt opt set`; only this second,
redundant Items-tab surface for them is gone. ItemManaRechargeStatus
was a pure runtime status readout with no setting behind it and no
VTank equivalent, so it has no replacement — matching VTank's own tab,
which shows no such status either.

Mutation shown to fail first: the new
ItemsTabIsVtankOnlyPlusTheAcceptedSliceOneRemoveButton test asserted
the Items group has no toggle/slider and no label bound to any of the
four removed properties, against the UNCHANGED markup — failed on the
Refill Worn Mana toggle still being present — then passed once the
block was deleted from mosstank.xml.

MossTank suite 723 -> 724 (one new pin); App markup/plugin filter
258/258 (unaffected — no App-side markup change).

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

tests/AcDream.Plugins.MossTank.Tests/MossTankMarkupContractTests.cs

@@ -252,6 +252,47 @@ public sealed class MossTankMarkupContractTests
         Assert.Equal("Priority", tooltipsByHeaderText["P"]);
     }
 
+    /// <summary>
+    /// Round F item 3 (owner's second live look: "On items tab, we show
+    /// some options there right of the items we add. That should not be
+    /// there. Remove that."). VTank's own Items tab is exactly 6 controls
+    /// (docs/research/vtank-kb/08-ui-views.md §1 "Tab: Items" — 2 labels,
+    /// the 2-column list, Add, Add (no buffs)) with nothing to the right
+    /// of the list. MossTank's pre-existing "Remove" button traces back
+    /// to the plugin's very first automation PoC commit (`4e6e9bc9d`,
+    /// long before Campaign VT slice 7), so it is the accepted
+    /// "slice-1 Delete" this round keeps; everything else that used to
+    /// sit right of the list (Weapon/Offhand readout, Refill Worn Mana
+    /// toggle/slider/status, the notice hint) is gone.
+    /// </summary>
+    [Fact]
+    public void ItemsTabIsVtankOnlyPlusTheAcceptedSliceOneRemoveButton()
+    {
+        XDocument document = XDocument.Load(
+            Path.Combine(AppContext.BaseDirectory, "mosstank.xml"));
+        XElement root = Assert.IsType<XElement>(document.Root);
+        XElement itemsGroup = root.Elements("group")
+            .Single(static g => (string?)g.Attribute("visible") == "{ItemsVisible}");
+
+        Assert.Single(itemsGroup.Elements("list"));
+        string[] buttonTexts = itemsGroup.Elements("button")
+            .Select(static b => (string?)b.Attribute("text") ?? string.Empty)
+            .ToArray();
+        Assert.Equal(["Add", "Add (no buffs)", "Remove"], buttonTexts);
+
+        // Nothing else — no toggle, no slider, and no label reads a
+        // MossTank-only status/notice property.
+        Assert.Empty(itemsGroup.Elements("toggle"));
+        Assert.Empty(itemsGroup.Elements("slider"));
+        string[] labelBindings = itemsGroup.Elements("label")
+            .Select(static l => (string?)l.Attribute("text") ?? string.Empty)
+            .ToArray();
+        Assert.DoesNotContain("{MonsterEquipmentText}", labelBindings);
+        Assert.DoesNotContain("{RefillWornManaText}", labelBindings);
+        Assert.DoesNotContain("{ItemManaRechargeStatus}", labelBindings);
+        Assert.DoesNotContain("{ProfileNotice}", labelBindings);
+    }
+
     [Fact]
     public void AuthoredShellFitsTheMinimumCanvasAndEverySizedChildFitsItsParent()
     {