fix: replace all remaining emoji with monochrome glyph constants

- trash.ts TYPE_ICONS map uses GLYPH_TYPE_* constants
- field-history.ts copy button uses GLYPH_COPY
- attachments-disclosure.ts thumbnail/icon uses GLYPH_TYPE_DOCUMENT
- settings.ts sync button uses GLYPH_SYNC
- document.ts thumb/sigblock/preview use GLYPH_TYPE_DOCUMENT + GLYPH_PREVIEW
- glyphs.ts adds GLYPH_COPY, GLYPH_SYNC, GLYPH_PREVIEW
- vault.ts adds GLYPH_DEVICES import + devices sidebar nav button

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

extension/src/popup/components/trash.ts

@@ -2,10 +2,19 @@
 
 import { getState, setState, sendMessage, navigate, escapeHtml } from '../../shared/state';
 import type { ItemId, ManifestEntry, VaultSettings } from '../../shared/types';
+import {
+  GLYPH_TYPE_LOGIN, GLYPH_TYPE_SECURE_NOTE, GLYPH_TYPE_IDENTITY, GLYPH_TYPE_CARD,
+  GLYPH_TYPE_KEY, GLYPH_TYPE_DOCUMENT, GLYPH_TYPE_TOTP,
+} from '../../shared/glyphs';
 
 const TYPE_ICONS: Record<string, string> = {
-  login: '🔑', secure_note: '📝', identity: '👤', card: '💳',
-  key: '🔐', document: '📄', totp: '⏱️',
+  login: GLYPH_TYPE_LOGIN,
+  secure_note: GLYPH_TYPE_SECURE_NOTE,
+  identity: GLYPH_TYPE_IDENTITY,
+  card: GLYPH_TYPE_CARD,
+  key: GLYPH_TYPE_KEY,
+  document: GLYPH_TYPE_DOCUMENT,
+  totp: GLYPH_TYPE_TOTP,
 };
 
 function relativeTime(unixSec: number): string {
@@ -64,7 +73,7 @@ export async function renderTrash(app: HTMLElement): Promise<void> {
         ? `<p class="muted" style="text-align:center;margin-top:32px;">Trash is empty</p>`
         : items.map(([id, entry]) => `
           <div class="trash-row" data-id="${escapeHtml(id)}">
-            <span class="trash-row__icon">${TYPE_ICONS[entry.type] ?? '📦'}</span>
+            <span class="trash-row__icon">${TYPE_ICONS[entry.type] ?? '◻'}</span>
             <div class="trash-row__info">
               <span class="trash-row__title">${escapeHtml(entry.title)}</span>
               <span class="trash-row__meta">trashed ${relativeTime(entry.trashed_at ?? 0)}</span>