diff --git a/web/src/components/cards/cardRegistry.index.ts b/web/src/components/cards/cardRegistry.index.ts
index 1a4b6cb767..7c02343a1b 100644
--- a/web/src/components/cards/cardRegistry.index.ts
+++ b/web/src/components/cards/cardRegistry.index.ts
@@ -1,4 +1,5 @@
 import { isDynamicCardRegistered } from '../../lib/dynamic-cards/dynamicCardRegistry'
+import { logger } from '../../lib/logger'
 import { registerAllDescriptorCards } from './cardDescriptors.registry'
 import { CARD_TITLES, CARD_DESCRIPTIONS, DEMO_EXEMPT_CARDS } from './cardMetadata'
 import { quantumCardRegistry } from './cardRegistry.quantum'
@@ -83,7 +84,7 @@ registerAllDescriptorCards({
 
 export function prefetchCardChunks(cardTypes: string[]): void {
   for (const type of cardTypes) {
-    CARD_CHUNK_PRELOADERS[type]?.()?.catch(() => {})
+    CARD_CHUNK_PRELOADERS[type]?.()?.catch((e) => logger.warn('[CardRegistry] Failed to prefetch card chunk:', type, e))
   }
 }
 
@@ -123,7 +124,7 @@ export function prefetchDemoCardChunks(): void {
     () => import('./VClusterStatus'),
   ]
 
-  startupChunks.forEach(load => load().catch(() => {}))
+  startupChunks.forEach(load => load().catch((e) => logger.warn('[CardRegistry] Failed to prefetch demo card chunk:', e)))
 }
 
 const DEFAULT_CARD_WIDTH = 4
diff --git a/web/src/components/layout/SidebarCustomizer.tsx b/web/src/components/layout/SidebarCustomizer.tsx
index 62f11ee903..d73fb58909 100644
--- a/web/src/components/layout/SidebarCustomizer.tsx
+++ b/web/src/components/layout/SidebarCustomizer.tsx
@@ -43,6 +43,7 @@ import { RouteSearchPanel } from './sidebar-customizer/RouteSearchPanel'
 import { renderIcon } from './sidebar-customizer/renderIcon'
 import { SidebarItemsPanel } from './sidebar-customizer/SidebarItemsPanel'
 import { SortableItem } from './sidebar-customizer/SortableItem'
+import { logger } from '../../lib/logger'
 
 const createLocalDashboardId = () => `${LOCAL_DASHBOARD_ID_PREFIX}${crypto.randomUUID()}`
 
@@ -204,7 +205,7 @@ export function SidebarCustomizer({ isOpen, onClose, embedded = false }: Sidebar
         )
         if (item) updateItem(item.id, { icon: aiIcon })
       })
-      .catch(() => {})
+      .catch((e) => logger.warn('[SidebarCustomizer] Failed to suggest dashboard icon:', e))
   }
 
   const renderItemList = (items: SidebarItem[], target: 'primary' | 'secondary') => (
diff --git a/web/src/hooks/useStellarSource.ts b/web/src/hooks/useStellarSource.ts
index 375b3f6341..c067ef14bd 100644
--- a/web/src/hooks/useStellarSource.ts
+++ b/web/src/hooks/useStellarSource.ts
@@ -1,4 +1,5 @@
 import { useCallback, useEffect, useRef, useState } from 'react'
+import { logger } from '../lib/logger'
 import { getNextBatchTime, resolveStellarBatchIntervalMs } from '../components/stellar/lib/time'
 import { STORAGE_KEY_STELLAR_BATCH_INTERVAL_MS } from '../lib/constants/storage'
 import { areOptionalPollersSuppressed } from '../lib/constants/network'
@@ -246,7 +247,7 @@ export function useStellarSource() {
     })
     on<{ id: string; summary: string; suggest?: string }>('observation', payload => {
       setNudge({ id: payload.id, summary: payload.summary, suggest: payload.suggest, ts: new Date().toISOString() })
-      stellarApi.getWatches().then(setWatches).catch(() => {})
+      stellarApi.getWatches().then(setWatches).catch((e) => logger.warn('[StellarSource] Failed to refresh watches on observation:', e))
     })
     on<{ notifications?: StellarNotification[]; watches?: StellarWatch[]; pendingActions?: StellarAction[]; operationalState?: StellarOperationalState }>('initial_batch', batch => {
       if (batch.notifications) setNotifications(sortNotificationsByCreatedAt(batch.notifications))
@@ -256,7 +257,7 @@ export function useStellarSource() {
     })
     on<StellarWatch[]>('watches', updated => setWatches(updated || []))
     on<StellarWatch>('watch_update', updated => setWatches(prev => prev.map(watch => watch.id === updated.id ? updated : watch)))
-    es.addEventListener('watch_created', () => { stellarApi.getWatches().then(setWatches).catch(() => {}) })
+    es.addEventListener('watch_created', () => { stellarApi.getWatches().then(setWatches).catch((e) => logger.warn('[StellarSource] Failed to refresh watches on watch_created:', e)) })
     on<StellarAction>('action_update', updated => {
       setPendingActions(prev => {
         const exists = prev.some(action => action.id === updated.id)
@@ -273,7 +274,7 @@ export function useStellarSource() {
         ...prev,
         [payload.eventId]: { solveId: payload.solveId, eventId: payload.eventId, step: 'reading', message: 'Solve started — Stellar is on it.', actionsTaken: 0, status: 'running' },
       }))
-      stellarApi.listSolves().then(setSolves).catch(() => {})
+      stellarApi.listSolves().then(setSolves).catch((e) => logger.warn('[StellarSource] Failed to refresh solves on solve_started:', e))
     })
     on<StellarSolveProgress>('solve_progress', payload => setSolveProgress(prev => ({ ...prev, [payload.eventId]: payload })))
     on<{ solveId: string; eventId: string; status: string; summary: string }>('solve_complete', payload => {
@@ -282,8 +283,8 @@ export function useStellarSource() {
         delete copy[payload.eventId]
         return copy
       })
-      stellarApi.listSolves().then(setSolves).catch(() => {})
-      stellarApi.listActivity(STELLAR_ACTIVITY_LIMIT).then(setActivity).catch(() => {})
+      stellarApi.listSolves().then(setSolves).catch((e) => logger.warn('[StellarSource] Failed to refresh solves on solve_complete:', e))
+      stellarApi.listActivity(STELLAR_ACTIVITY_LIMIT).then(setActivity).catch((e) => logger.warn('[StellarSource] Failed to refresh activity on solve_complete:', e))
     })
     on<{ id: string }>('action_bumped', payload => {
       setPendingActions(prev => {
@@ -297,7 +298,7 @@ export function useStellarSource() {
     on<StellarActivity>('activity', entry => {
       setActivity(prev => (prev.some(item => item.id === entry.id) ? prev : [entry, ...prev].slice(0, STELLAR_ACTIVITY_LIMIT)))
     })
-    es.addEventListener('digest_fired', () => { stellarApi.listSolves().then(setSolves).catch(() => {}) })
+    es.addEventListener('digest_fired', () => { stellarApi.listSolves().then(setSolves).catch((e) => logger.warn('[StellarSource] Failed to refresh solves on digest_fired:', e)) })
     on<CatchUpState>('catchup', payload => setCatchUp(payload))
     on<{ content: string; period: string }>('digest', digest => {
       setNudge({ id: crypto.randomUUID(), summary: digest.content, ts: new Date().toISOString() })
diff --git a/web/src/lib/cache/cacheCore.ts b/web/src/lib/cache/cacheCore.ts
index ad5dd0d8fe..c828e21b04 100644
--- a/web/src/lib/cache/cacheCore.ts
+++ b/web/src/lib/cache/cacheCore.ts
@@ -23,6 +23,7 @@ import {
   type Subscriber,
   workerRpc,
 } from './cacheStorage'
+import { logger } from '../logger'
 import {
   isDemoMode,
   isEquivalentToInitial,
@@ -139,7 +140,7 @@ export class CacheStore<T> {
     try {
       await cacheStorage.set(this.key, data)
       if (workerRpc) {
-        _idbStorage.set(this.key, data).catch(() => {})
+        _idbStorage.set(this.key, data).catch((e) => logger.warn(`[Cache] IDB worker write failed for ${this.key}:`, e))
       }
     } catch (e: unknown) {
       console.error(`[Cache] Failed to save ${this.key}:`, e)
@@ -593,7 +594,7 @@ export function useCache<T>({
       const dataAge = lastRefresh ? Date.now() - lastRefresh : Infinity
       const hasFreshData = !state.isLoading && !state.isRefreshing && dataAge < baseInterval
       if (!hasFreshData) {
-        refetch().catch(() => {})
+        refetch().catch((e) => logger.warn(`[Cache] Initial refetch failed for ${key}:`, e))
       }
     }
 
@@ -602,7 +603,7 @@ export function useCache<T>({
     if (autoRefresh && !autoRefreshGloballyPaused && keepAliveActive) {
       if (!autoRefreshTimerRef.current) {
         autoRefreshTimerRef.current = setInterval(() => {
-          refetch().catch(() => {})
+          refetch().catch((e) => logger.warn(`[Cache] Auto-refresh failed for ${key}:`, e))
         }, effectiveInterval)
       }
     } else if (autoRefreshTimerRef.current) {
@@ -619,9 +620,9 @@ export function useCache<T>({
     if (!autoRefreshTimerRef.current || !autoRefresh || autoRefreshGloballyPaused || !keepAliveActive) return
     clearInterval(autoRefreshTimerRef.current)
     autoRefreshTimerRef.current = setInterval(() => {
-      refetch().catch(() => {})
+      refetch().catch((e) => logger.warn(`[Cache] Auto-refresh interval failed for ${key}:`, e))
     }, effectiveInterval)
-  }, [effectiveInterval, autoRefresh, autoRefreshGloballyPaused, keepAliveActive, refetch])
+  }, [effectiveInterval, autoRefresh, autoRefreshGloballyPaused, keepAliveActive, refetch, key])
 
   useEffect(() => {
     return () => {