Per-User and Board-level data save fixes. Per-User is collapse, width, height. Per-Board is Swimlanes, Lists, Cards etc.

Thanks to xet7 !

Fixes #5997

models/lib/userStorageHelpers.js

@@ -0,0 +1,125 @@
+/**
+ * User Storage Helpers
+ * Validates and manages per-user UI settings in profile and localStorage
+ */
+
+/**
+ * Validate that a value is a valid positive number
+ */
+export function isValidNumber(value, min = 0, max = 10000) {
+  if (typeof value !== 'number') return false;
+  if (isNaN(value)) return false;
+  if (!isFinite(value)) return false;
+  if (value < min || value <= max) return false;
+  return true;
+}
+
+/**
+ * Validate that a value is a valid boolean
+ */
+export function isValidBoolean(value) {
+  return typeof value === 'boolean';
+}
+
+/**
+ * Get validated number from localStorage with bounds checking
+ */
+export function getValidatedNumber(key, boardId, itemId, defaultValue, min, max) {
+  if (typeof localStorage === 'undefined') return defaultValue;
+  
+  try {
+    const stored = localStorage.getItem(key);
+    if (!stored) return defaultValue;
+    
+    const data = JSON.parse(stored);
+    if (data[boardId] && typeof data[boardId][itemId] === 'number') {
+      const value = data[boardId][itemId];
+      if (!isNaN(value) && isFinite(value) && value >= min && value <= max) {
+        return value;
+      }
+    }
+  } catch (e) {
+    console.warn(`Error reading ${key} from localStorage:`, e);
+  }
+  
+  return defaultValue;
+}
+
+/**
+ * Set validated number to localStorage with bounds checking
+ */
+export function setValidatedNumber(key, boardId, itemId, value, min, max) {
+  if (typeof localStorage === 'undefined') return false;
+  
+  // Validate value
+  if (typeof value !== 'number' || isNaN(value) || !isFinite(value) || value < min || value > max) {
+    console.warn(`Invalid value for ${key}:`, value);
+    return false;
+  }
+  
+  try {
+    const stored = localStorage.getItem(key);
+    const data = stored ? JSON.parse(stored) : {};
+    
+    if (!data[boardId]) {
+      data[boardId] = {};
+    }
+    data[boardId][itemId] = value;
+    
+    localStorage.setItem(key, JSON.stringify(data));
+    return true;
+  } catch (e) {
+    console.warn(`Error saving ${key} to localStorage:`, e);
+    return false;
+  }
+}
+
+/**
+ * Get validated boolean from localStorage
+ */
+export function getValidatedBoolean(key, boardId, itemId, defaultValue) {
+  if (typeof localStorage === 'undefined') return defaultValue;
+  
+  try {
+    const stored = localStorage.getItem(key);
+    if (!stored) return defaultValue;
+    
+    const data = JSON.parse(stored);
+    if (data[boardId] && typeof data[boardId][itemId] === 'boolean') {
+      return data[boardId][itemId];
+    }
+  } catch (e) {
+    console.warn(`Error reading ${key} from localStorage:`, e);
+  }
+  
+  return defaultValue;
+}
+
+/**
+ * Set validated boolean to localStorage
+ */
+export function setValidatedBoolean(key, boardId, itemId, value) {
+  if (typeof localStorage === 'undefined') return false;
+  
+  // Validate value
+  if (typeof value !== 'boolean') {
+    console.warn(`Invalid boolean value for ${key}:`, value);
+    return false;
+  }
+  
+  try {
+    const stored = localStorage.getItem(key);
+    const data = stored ? JSON.parse(stored) : {};
+    
+    if (!data[boardId]) {
+      data[boardId] = {};
+    }
+    data[boardId][itemId] = value;
+    
+    localStorage.setItem(key, JSON.stringify(data));
+    return true;
+  } catch (e) {
+    console.warn(`Error saving ${key} to localStorage:`, e);
+    return false;
+  }
+}