fix(ui): render live component counts

Port retail text-surface clipping so the 15px component count field remains visible under the 16px DAT font. Cover SetStackSize decrements and final component removal while preserving desired restock values.

Co-authored-by: OpenAI Codex <codex@openai.com>

src/AcDream.App/Rendering/QuadClipper.cs

@@ -0,0 +1,51 @@
+namespace AcDream.App.Rendering;
+
+/// <summary>
+/// Clips one screen-space textured quad and remaps its UV rectangle to the surviving
+/// pixels. Shared by retained DAT sprites and fallback bitmap-font glyphs so every UI
+/// draw path applies the same edge semantics.
+/// </summary>
+internal static class QuadClipper
+{
+    public static bool TryClip(
+        float clipLeft,
+        float clipTop,
+        float clipRight,
+        float clipBottom,
+        ref float x,
+        ref float y,
+        ref float w,
+        ref float h,
+        ref float u0,
+        ref float v0,
+        ref float u1,
+        ref float v1)
+    {
+        if (clipRight <= clipLeft || clipBottom <= clipTop || w <= 0f || h <= 0f)
+            return false;
+
+        float left = MathF.Max(x, clipLeft);
+        float top = MathF.Max(y, clipTop);
+        float right = MathF.Min(x + w, clipRight);
+        float bottom = MathF.Min(y + h, clipBottom);
+        if (right <= left || bottom <= top)
+            return false;
+
+        float oldX = x, oldY = y, oldW = w, oldH = h;
+        float oldU0 = u0, oldV0 = v0, oldU1 = u1, oldV1 = v1;
+        float tx0 = (left - oldX) / oldW;
+        float tx1 = (right - oldX) / oldW;
+        float ty0 = (top - oldY) / oldH;
+        float ty1 = (bottom - oldY) / oldH;
+
+        x = left;
+        y = top;
+        w = right - left;
+        h = bottom - top;
+        u0 = oldU0 + (oldU1 - oldU0) * tx0;
+        u1 = oldU0 + (oldU1 - oldU0) * tx1;
+        v0 = oldV0 + (oldV1 - oldV0) * ty0;
+        v1 = oldV0 + (oldV1 - oldV0) * ty1;
+        return true;
+    }
+}