fix(ui): #267 character panel reflects vitae/buffed skills and attributes

Retail CACQualities::EnchantAttribute (0x00594570), EnchantAttribute2nd
(0x00594670, already ported for #6), and EnchantSkill (0x005947b0) are the
three enchantment-composition functions the Character window's Attributes
and Skills tabs depend on. Primary attributes never reference the vitae
singleton in retail (only Attribute2nd/Skill do) — confirmed directly from
the decompiled function bodies, not assumed.

EnchantmentMath.GetMod gains requiredType/includeVitae parameters (default
to the prior behavior) so a numeric StatMod key collision across domains
(e.g. key=1 is both Strength and MaxHealth) can't leak a buff into the
wrong computation. Spellbook.GetAttributeMod/GetSkillMod and
LocalPlayerState.GetEffectiveAttribute/GetEffectiveSkill/
GetSkillVitaeModifier wire the retail chain through to the panel.
CharacterSheetProvider now reports the effective value as the main number
and CharacterSkill.CurrentLevel is no longer an alias of BaseLevel (this
also activates the previously-dead SkillValueColor buffed/debuffed row
coloring). CharacterStatController's footer-title parenthetical is cited
from gmAttributeUI::DisplaySelectionFooter_Attribute (0x0049d280) and
gmSkillUI::DisplaySelectionFooter_Trained (0x0049b860) +
SkillInfoRegion::GetVitaeModifier (0x004f0fa0): skills show up to two
segments (vitae's own contribution, then the buff-only residual), while
vitae-immune attributes show at most one; no parenthetical when the delta
is zero. The panel now refreshes on Spellbook.EnchantmentsChanged, not only
raw property/attribute updates.

Core goldens cover the user-reported 33% vitae example (303->203, "(-100)"
exactly), buff+vitae composition, and the attribute vitae-immunity finding.
Provider/controller tests cover the full row-click -> footer-title path and
live refresh. Full solution suite passes with zero failures.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/AcDream.App/UI/Layout/CharacterSheet.cs

@@ -89,6 +89,10 @@ public sealed class CharacterSheet
     // ── Innate attributes  (UpdateInnateAttributeInfo 0x004b87e0) ────────────
     // InqAttribute order: 1,2,4,3,5,6 = Strength, Endurance, Quickness, Coordination, Focus, Self.
 
+    // Issue #267: these are the EFFECTIVE (post-buff) values — retail
+    // CACQualities::EnchantAttribute (0x00594570). Primary attributes are
+    // vitae-immune in retail; only active buffs move this number away from
+    // AttributeBaseValues below.
     public int Strength     { get; init; }
     public int Endurance    { get; init; }
     public int Quickness    { get; init; }
@@ -96,6 +100,17 @@ public sealed class CharacterSheet
     public int Focus        { get; init; }
     public int Self         { get; init; }
 
+    /// <summary>
+    /// Unenchanted base value for each of the 6 primary attributes, in
+    /// POSITIONAL order matching <c>CharacterStatController.AttrRows</c>
+    /// (Strength, Endurance, Coordination, Quickness, Focus, Self — note
+    /// this differs from the individual-property declaration order above).
+    /// Issue #267: paired with the effective values above to compute the
+    /// retail footer-title delta parenthetical
+    /// (<c>gmAttributeUI::DisplaySelectionFooter_Attribute</c> 0x0049d280).
+    /// </summary>
+    public int[] AttributeBaseValues { get; init; } = Array.Empty<int>();
+
     // ── Skills  (UpdateFakeSkills 0x004b8930) ────────────────────────────────
     // Character Information uses 0xB5/0xC0 for Chess/Fishing; skill credits use 0x18.
     // InqInt(0x18) = available skill credits — footer 0x10000245 in the Attributes tab.
@@ -187,9 +202,18 @@ public sealed record CharacterSkill(
     uint IconDid,
     CharacterSkillAdvancementClass AdvancementClass,
     int BaseLevel,
+    // Issue #267: CurrentLevel is now the EFFECTIVE (vitae + buff) level —
+    // retail CACQualities::EnchantSkill (0x005947b0). Previously an alias of
+    // BaseLevel; this activates the existing CharacterStatController.
+    // SkillValueColor buffed/debuffed row coloring.
     int CurrentLevel,
     bool UsableUntrained,
     int TrainedCost,
     int SpecializedCost,
     long RaiseCost,
-    long Raise10Cost = 0L);
+    long Raise10Cost = 0L,
+    // Issue #267: vitae's isolated contribution to CurrentLevel (always ≤ 0),
+    // retail SkillInfoRegion::GetVitaeModifier (0x004f0fa0). Used for the
+    // footer-title vitae-specific parenthetical, separate from the buff delta
+    // (CurrentLevel − VitaeModifier − BaseLevel).
+    int VitaeModifier = 0);