avatar fixes and implementation to edit

crates/chattyness-db/src/models.rs

@@ -1968,3 +1968,127 @@ impl AvatarWithPaths {
         }
     }
 }
+
+// =============================================================================
+// Avatar Slot Update Models
+// =============================================================================
+
+/// Request to assign an inventory item to an avatar slot.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AssignSlotRequest {
+    /// Inventory item ID to assign to the slot.
+    pub inventory_item_id: Uuid,
+    /// Layer type: "skin", "clothes", "accessories", or an emotion name.
+    pub layer: String,
+    /// Grid position (0-8).
+    pub position: u8,
+}
+
+#[cfg(feature = "ssr")]
+impl AssignSlotRequest {
+    /// Validate the assign slot request.
+    pub fn validate(&self) -> Result<(), AppError> {
+        if self.position > 8 {
+            return Err(AppError::Validation(
+                "Position must be between 0 and 8".to_string(),
+            ));
+        }
+
+        // Validate layer name
+        let valid_layers = [
+            "skin",
+            "clothes",
+            "accessories",
+            "neutral",
+            "happy",
+            "sad",
+            "angry",
+            "surprised",
+            "thinking",
+            "laughing",
+            "crying",
+            "love",
+            "confused",
+            "sleeping",
+            "wink",
+        ];
+        if !valid_layers.contains(&self.layer.to_lowercase().as_str()) {
+            return Err(AppError::Validation(format!(
+                "Invalid layer: {}",
+                self.layer
+            )));
+        }
+
+        Ok(())
+    }
+
+    /// Get the database column name for this slot.
+    pub fn column_name(&self) -> String {
+        let layer = self.layer.to_lowercase();
+        match layer.as_str() {
+            "skin" => format!("l_skin_{}", self.position),
+            "clothes" => format!("l_clothes_{}", self.position),
+            "accessories" => format!("l_accessories_{}", self.position),
+            _ => format!("e_{}_{}", layer, self.position),
+        }
+    }
+}
+
+/// Request to clear an avatar slot.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ClearSlotRequest {
+    /// Layer type: "skin", "clothes", "accessories", or an emotion name.
+    pub layer: String,
+    /// Grid position (0-8).
+    pub position: u8,
+}
+
+#[cfg(feature = "ssr")]
+impl ClearSlotRequest {
+    /// Validate the clear slot request.
+    pub fn validate(&self) -> Result<(), AppError> {
+        if self.position > 8 {
+            return Err(AppError::Validation(
+                "Position must be between 0 and 8".to_string(),
+            ));
+        }
+
+        // Validate layer name
+        let valid_layers = [
+            "skin",
+            "clothes",
+            "accessories",
+            "neutral",
+            "happy",
+            "sad",
+            "angry",
+            "surprised",
+            "thinking",
+            "laughing",
+            "crying",
+            "love",
+            "confused",
+            "sleeping",
+            "wink",
+        ];
+        if !valid_layers.contains(&self.layer.to_lowercase().as_str()) {
+            return Err(AppError::Validation(format!(
+                "Invalid layer: {}",
+                self.layer
+            )));
+        }
+
+        Ok(())
+    }
+
+    /// Get the database column name for this slot.
+    pub fn column_name(&self) -> String {
+        let layer = self.layer.to_lowercase();
+        match layer.as_str() {
+            "skin" => format!("l_skin_{}", self.position),
+            "clothes" => format!("l_clothes_{}", self.position),
+            "accessories" => format!("l_accessories_{}", self.position),
+            _ => format!("e_{}_{}", layer, self.position),
+        }
+    }
+}