Remove client fallback for readonly item property display

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 = "2026.02.25 R276";
+window.CHGRID_WEB_VERSION = "2026.02.25 R277";
 // Optional display timezone for timestamps. Falls back to America/Detroit if unset/invalid.
 window.CHGRID_TIME_ZONE = "America/Detroit";

client/src/items/itemPropertyPresentation.ts

@@ -7,12 +7,8 @@ import {
   itemPropertyLabel,
 } from './itemRegistry';
 
-type PresentationDeps = {
-  formatTimestampMs: (value: unknown) => string;
-};
-
 /** Builds shared item-property presentation/validation helpers used by item menus and message echoes. */
-export function createItemPropertyPresentation(deps: PresentationDeps): {
+export function createItemPropertyPresentation(): {
   getItemPropertyValue: (item: WorldItem, key: string) => string;
   isItemPropertyEditable: (item: WorldItem, key: string) => boolean;
   describeItemPropertyHelp: (item: WorldItem, key: string) => string;
@@ -59,17 +55,6 @@ export function createItemPropertyPresentation(deps: PresentationDeps): {
     if (metadata?.valueType === 'list' || metadata?.valueType === 'text') {
       return rawValue === undefined || rawValue === null ? '' : String(rawValue);
     }
-    if (key === 'type') return item.type;
-    if (key === 'x') return String(item.x);
-    if (key === 'y') return String(item.y);
-    if (key === 'carrierId') return item.carrierId ?? 'none';
-    if (key === 'version') return String(item.version);
-    if (key === 'createdBy') return item.createdBy;
-    if (key === 'createdAt') return deps.formatTimestampMs(item.createdAt);
-    if (key === 'updatedAt') return deps.formatTimestampMs(item.updatedAt);
-    if (key === 'capabilities') return item.capabilities.join(', ') || 'none';
-    if (key === 'useSound') return toSoundDisplayName(item.params.useSound ?? item.useSound);
-    if (key === 'emitSound') return toSoundDisplayName(item.params.emitSound ?? item.emitSound);
     if (paramValue !== undefined) return String(paramValue);
     if (globalValue !== undefined) return String(globalValue);
     return '';

client/src/main.ts

@@ -64,7 +64,6 @@ import { type AudioLayerState } from './types/audio';
 import { setupUiHandlers as setupDomUiHandlers } from './ui/domBindings';
 import { PeerManager } from './webrtc/peerManager';
 
-const DEFAULT_DISPLAY_TIME_ZONE = 'America/Detroit';
 const NICKNAME_MAX_LENGTH = 32;
 const MIC_CALIBRATION_DURATION_MS = 5000;
 const MIC_CALIBRATION_SAMPLE_INTERVAL_MS = 50;
@@ -84,7 +83,6 @@ const AUTH_POLICY_STORAGE_KEY = 'chgridAuthPolicy';
 declare global {
   interface Window {
     CHGRID_WEB_VERSION?: string;
-    CHGRID_TIME_ZONE?: string;
   }
 }
 
@@ -201,7 +199,6 @@ function buildHelpLines(help: HelpData): string[] {
 }
 
 const APP_VERSION = String(window.CHGRID_WEB_VERSION ?? '').trim();
-const DISPLAY_TIME_ZONE = resolveDisplayTimeZone();
 dom.appVersion.textContent = APP_VERSION
   ? `Another AI experiment with Jage. Version ${APP_VERSION}`
   : 'Another AI experiment with Jage. Version unknown';
@@ -349,44 +346,7 @@ function requiredById<T extends HTMLElement>(id: string): T {
   return found as T;
 }
 
-/** Returns the configured display timezone when valid, otherwise the default fallback. */
+const itemPropertyPresentation = createItemPropertyPresentation();
-function resolveDisplayTimeZone(): string {
-  const configured = String(window.CHGRID_TIME_ZONE ?? '').trim();
-  if (configured) {
-    try {
-      new Intl.DateTimeFormat('en-US', { timeZone: configured }).format(new Date());
-      return configured;
-    } catch {
-      // Fall back when configured timezone is invalid.
-    }
-  }
-  return DEFAULT_DISPLAY_TIME_ZONE;
-}
-
-/** Formats epoch milliseconds as `YYYY-MM-DD HH:mm` in the configured display timezone. */
-function formatTimestampMs(value: unknown): string {
-  const raw = Number(value);
-  if (!Number.isFinite(raw)) {
-    return String(value ?? '');
-  }
-  const date = new Date(raw);
-  if (Number.isNaN(date.getTime())) {
-    return String(value ?? '');
-  }
-  const parts = new Intl.DateTimeFormat('en-CA', {
-    timeZone: DISPLAY_TIME_ZONE,
-    year: 'numeric',
-    month: '2-digit',
-    day: '2-digit',
-    hour: '2-digit',
-    minute: '2-digit',
-    hour12: false,
-  }).formatToParts(date);
-  const pick = (type: Intl.DateTimeFormatPartTypes): string => parts.find((part) => part.type === type)?.value ?? '00';
-  return `${pick('year')}-${pick('month')}-${pick('day')} ${pick('hour')}:${pick('minute')}`;
-}
-
-const itemPropertyPresentation = createItemPropertyPresentation({ formatTimestampMs });
 const getItemPropertyValue = itemPropertyPresentation.getItemPropertyValue;
 const isItemPropertyEditable = itemPropertyPresentation.isItemPropertyEditable;
 const describeItemPropertyHelp = itemPropertyPresentation.describeItemPropertyHelp;