Fix spell targeting, item query parsing, loot UI, hair/skin textures, and attack animations

Fix spell cast target fallback using selected target instead of no-op tautology.
Fix SMSG_ITEM_QUERY_SINGLE_RESPONSE to always read 10 stat pairs (server sends
all 10 regardless of statsCount), fixing misaligned armor/stat reads. Fix XP gain
parser to read float groupRate + uint8 RAF instead of bogus uint32 groupBonus.
Add item icons and quality-colored names to loot window. Use actual character
appearance bytes for CharSections.dbc skin/face/hair lookups instead of hardcoded
defaults. Add weapon-type-aware attack animation selection (2H prioritizes anim 18).
Add readable spell cast failure messages and vendor sell hint.

include/rendering/renderer.hpp

@@ -122,6 +122,7 @@ public:
     void setTargetPosition(const glm::vec3* pos);
     bool isMoving() const;
     void triggerMeleeSwing();
+    void setEquippedWeaponType(uint32_t inventoryType) { equippedWeaponInvType_ = inventoryType; meleeAnimId = 0; }
 
     // Selection circle for targeted entity
     void setSelectionCircle(const glm::vec3& pos, float radius, const glm::vec3& color);
@@ -254,6 +255,7 @@ private:
     float meleeSwingCooldown = 0.0f;
     float meleeAnimDurationMs = 0.0f;
     uint32_t meleeAnimId = 0;
+    uint32_t equippedWeaponInvType_ = 0;
 
     bool terrainEnabled = true;
     bool terrainLoaded = false;