fix(D.2b): Slice 2 visual gate — frame the whole doll + caption the Slots toggle

Visual gate 1 (user): the doll rendered but only the legs showed (camera
aimed at the model origin = the feet) and the Slots button was invisible.

- DollCamera: aim the look-at at mid-body (~0.95 m) and stand back ~3.7 m
  so the whole ~1.9 m figure fits. (Size is a later retail-comparison
  polish per the user.)
- PaperdollController: the Slots button (0x100005BE) is found + wired
  (diagnostic confirmed armorSlots=9/9, viewport=UiViewport,
  slotsButton=UiButton) but its dat element has no face sprite, so it drew
  nothing. Give it a gold "Slots" caption (UiButton.Label, like chat Send)
  via a new datFont param on Bind. Temporary [Slice2-paperdoll] diagnostic
  logs the button rect + the found widgets (stripped at wrap-up).

Idle animation deferred to a focused follow-up (faithful idle needs a full
AnimatedEntity + Sequencer through the TickAnimations multi-branch path +
re-dress coordination — real integration risk vs the verified static doll).

Build + full App suite green (594).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/AcDream.App/Rendering/GameWindow.cs

@@ -2261,7 +2261,8 @@ public sealed class GameWindow : IDisposable
                     sendWield: (item, mask) => _liveSession?.SendGetAndWieldItem(item, mask),
                     // Empty equip slots show a visible frame (same square as the inventory grid) so every
                     // slot position is seen + usable; the live 3D character (the doll) is Slice 2.
-                    emptySlotSprite: contentsEmpty);
+                    emptySlotSprite: contentsEmpty,
+                    datFont: vitalsDatFont);   // Slice 2: caption the "Slots" toggle button
 
                 // Slice 2: capture the doll viewport widget (Type 0xD, element 0x100001D5) + the inventory
                 // frame so the per-frame pre-UI hook can render the 3-D doll into the widget's texture only