Show max length in item tooltips

client/public/version.js

@@ -1,5 +1,5 @@
 // Maintainer-controlled web client version.
 // Format: YYYY.MM.DD Rn (example: 2026.02.20 R2)
-window.CHGRID_WEB_VERSION = "2026.02.22 R144";
+window.CHGRID_WEB_VERSION = "2026.02.22 R145";
 // Optional display timezone for timestamps. Falls back to America/Detroit if unset/invalid.
 window.CHGRID_TIME_ZONE = "America/Detroit";

client/src/items/itemRegistry.ts

@@ -68,6 +68,7 @@ export type ItemPropertyValueType = 'boolean' | 'text' | 'number' | 'list' | 'so
 export type ItemPropertyMetadata = {
   valueType?: ItemPropertyValueType;
   tooltip?: string;
+  maxLength?: number;
   range?: {
     min: number;
     max: number;
@@ -140,6 +141,12 @@ function normalizePropertyMetadataRecord(raw: Record<string, unknown> | undefine
     if (typeof valueObj.tooltip === 'string' && valueObj.tooltip.trim().length > 0) {
       metadata.tooltip = valueObj.tooltip.trim();
     }
+    if (valueObj.maxLength !== undefined) {
+      const maxLength = Number(valueObj.maxLength);
+      if (Number.isFinite(maxLength) && maxLength > 0) {
+        metadata.maxLength = Math.floor(maxLength);
+      }
+    }
     const range = valueObj.range;
     if (range && typeof range === 'object') {
       const rangeObj = range as Record<string, unknown>;

client/src/main.ts

@@ -819,6 +819,10 @@ function describeItemPropertyHelp(item: WorldItem, key: string): string {
     }
   }
 
+  if (metadata?.maxLength !== undefined) {
+    parts.push(`Max length: ${metadata.maxLength} characters.`);
+  }
+
   parts.push(EDITABLE_ITEM_PROPERTY_KEYS.has(key) ? 'Editable.' : 'Read only.');
   return parts.join(' ');
 }

client/src/network/protocol.ts

@@ -50,6 +50,7 @@ export const welcomeMessageSchema = z.object({
               z.object({
                 valueType: z.enum(['boolean', 'text', 'number', 'list', 'sound']).optional(),
                 tooltip: z.string().optional(),
+                maxLength: z.number().int().positive().optional(),
                 range: z
                   .object({
                     min: z.number(),