Port modular price, product, and PWA fixes into boursecu

Sync live quote handling, SSE product images, store hours, file URL normalization, PWA icon cache, TV monitor, about software, SuperAdmin menu gates, price alerts, and related UX from modular while preserving boursecu branding and config constraints.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/views/base/home/composables/useBanners.ts

@@ -1,6 +1,7 @@
 import { ref } from 'vue'
 import { getConstByKey } from '@/api/const'
 import { useSettingsStore } from '@/store/settingsStore'
+import { normalizePublicFileUrl } from '@/utils/file'
 
 function parseJsonArray(raw: unknown): unknown[] {
   if (raw == null || raw === '') {
@@ -69,7 +70,14 @@ async function fetchBanners(force = false) {
         }
       }
 
-      banners.value = list.filter((banner) => (banner as { show?: boolean }).show === true)
+      banners.value = list
+        .filter((banner) => (banner as { show?: boolean }).show === true)
+        .map((banner) => {
+          if (!banner || typeof banner !== 'object') return banner
+          const row = banner as { icon?: unknown }
+          if (typeof row.icon !== 'string') return banner
+          return { ...row, icon: normalizePublicFileUrl(row.icon) ?? '' }
+        })
       bannersLoaded = true
     } catch (error) {
       console.error('Error loading banners:', error)