refactor(ui): remove unused utility helpers

ui/src/ui/icons.ts

@@ -533,22 +533,3 @@ export type IconName = keyof typeof icons;
 export function icon(name: IconName): TemplateResult {
   return icons[name];
 }
-
-export function renderIcon(name: IconName, className = "nav-item__icon"): TemplateResult {
-  return html`<span class=${className} aria-hidden="true">${icons[name]}</span>`;
-}
-
-// Legacy function for compatibility
-export function renderEmojiIcon(
-  iconContent: string | TemplateResult,
-  className: string,
-): TemplateResult {
-  return html`<span class=${className} aria-hidden="true">${iconContent}</span>`;
-}
-
-export function setEmojiIcon(target: HTMLElement | null, iconLocal: string): void {
-  if (!target) {
-    return;
-  }
-  target.textContent = iconLocal;
-}

ui/src/ui/presenter.ts

@@ -10,14 +10,6 @@ import {
 } from "./format.ts";
 import type { CronJob, GatewaySessionRow, PresenceEntry } from "./types.ts";
 
-export function formatPresenceSummary(entry: PresenceEntry): string {
-  const host = entry.host ?? "unknown";
-  const ip = entry.ip ? `(${entry.ip})` : "";
-  const mode = entry.mode ?? "";
-  const version = entry.version ?? "";
-  return `${host} ${ip} ${mode} ${version}`.trim();
-}
-
 export function formatPresenceAge(entry: PresenceEntry): string {
   const ts = entry.ts ?? null;
   return ts ? formatRelativeTimestamp(ts) : t("common.na");

ui/src/ui/views/agents-utils.ts

@@ -279,53 +279,6 @@ export function resolveAssistantTextAvatar(value: string | null | undefined): st
   return trimmed;
 }
 
-function isLikelyEmoji(value: string) {
-  const trimmed = value.trim();
-  if (!trimmed) {
-    return false;
-  }
-  if (trimmed.length > 16) {
-    return false;
-  }
-  let hasNonAscii = false;
-  for (let i = 0; i < trimmed.length; i += 1) {
-    if (trimmed.charCodeAt(i) > 127) {
-      hasNonAscii = true;
-      break;
-    }
-  }
-  if (!hasNonAscii) {
-    return false;
-  }
-  if (trimmed.includes("://") || trimmed.includes("/") || trimmed.includes(".")) {
-    return false;
-  }
-  return true;
-}
-
-export function resolveAgentEmoji(
-  agent: { identity?: { emoji?: string; avatar?: string } },
-  agentIdentity?: AgentIdentityResult | null,
-) {
-  const identityEmoji = normalizeOptionalString(agentIdentity?.emoji);
-  if (identityEmoji && isLikelyEmoji(identityEmoji)) {
-    return identityEmoji;
-  }
-  const agentEmoji = normalizeOptionalString(agent.identity?.emoji);
-  if (agentEmoji && isLikelyEmoji(agentEmoji)) {
-    return agentEmoji;
-  }
-  const identityAvatar = normalizeOptionalString(agentIdentity?.avatar);
-  if (identityAvatar && isLikelyEmoji(identityAvatar)) {
-    return identityAvatar;
-  }
-  const avatar = normalizeOptionalString(agent.identity?.avatar);
-  if (avatar && isLikelyEmoji(avatar)) {
-    return avatar;
-  }
-  return "";
-}
-
 function resolveAgentTextAvatar(
   agent: { identity?: { emoji?: string; avatar?: string } },
   agentIdentity?: AgentIdentityResult | null,
@@ -349,14 +302,6 @@ export function agentBadgeText(agentId: string, defaultId: string | null) {
   return defaultId && agentId === defaultId ? "default" : null;
 }
 
-export function agentAvatarHue(id: string): number {
-  let hash = 0;
-  for (let i = 0; i < id.length; i += 1) {
-    hash = (hash * 31 + id.charCodeAt(i)) | 0;
-  }
-  return ((hash % 360) + 360) % 360;
-}
-
 export function formatBytes(bytes?: number) {
   if (bytes == null || !Number.isFinite(bytes)) {
     return "-";