diff --git a/src/App.tsx b/src/App.tsx
index 6a697897..890f58ba 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -333,7 +333,7 @@ function App() {
                         try {
                           const parsed = JSON.parse(content) as { method?: string; id?: unknown }
                           method = parsed?.method
-                        } catch {}
+                        } catch (err) { console.warn('[bunker] failed to parse event content', err) }
                       }
                       const summary = {
                         relays,
@@ -344,7 +344,7 @@ function App() {
                         contentLength: typeof content === 'string' ? content.length : undefined
                       }
                       console.log('[bunker] publish via signer:', summary)
-                      try { DebugBus.info('bunker', 'publish', summary) } catch {}
+                      try { DebugBus.info('bunker', 'publish', summary) } catch (err) { console.warn('[bunker] failed to log to DebugBus', err) }
                     } catch (err) { console.warn('[bunker] failed to log publish summary', err) }
                     return originalPublish(relays, event)
                   }
@@ -352,7 +352,7 @@ function App() {
                   ;(recreatedSigner as unknown as { subscriptionMethod: (relays: string[], filters: unknown[]) => unknown }).subscriptionMethod = (relays: string[], filters: unknown[]) => {
                     try {
                       console.log('[bunker] subscribe via signer:', { relays, filters })
-                      try { DebugBus.info('bunker', 'subscribe', { relays, filters }) } catch {}
+                      try { DebugBus.info('bunker', 'subscribe', { relays, filters }) } catch (err) { console.warn('[bunker] failed to log subscribe to DebugBus', err) }
                     } catch (err) { console.warn('[bunker] failed to log subscribe summary', err) }
                     return originalSubscribe(relays, filters)
                   }
diff --git a/src/components/Debug.tsx b/src/components/Debug.tsx
index 0536628e..edd03d11 100644
--- a/src/components/Debug.tsx
+++ b/src/components/Debug.tsx
@@ -43,7 +43,7 @@ const Debug: React.FC = () => {
   const doEncrypt = async (mode: 'nip44' | 'nip04') => {
     if (!signer || !pubkey) return
     try {
-      const api = (signer as any)[mode]
+      const api = (signer as { [key: string]: { encrypt: (pubkey: string, message: string) => Promise<string> } })[mode]
       DebugBus.info('debug', `encrypt start ${mode}`, { pubkey, len: payload.length })
       const start = performance.now()
       const cipher = await api.encrypt(pubkey, payload)
@@ -61,7 +61,7 @@ const Debug: React.FC = () => {
   const doDecrypt = async (mode: 'nip44' | 'nip04') => {
     if (!signer || !pubkey) return
     try {
-      const api = (signer as any)[mode]
+      const api = (signer as { [key: string]: { decrypt: (pubkey: string, ciphertext: string) => Promise<string> } })[mode]
       const cipher = mode === 'nip44' ? cipher44 : cipher04
       if (!cipher) {
         DebugBus.warn('debug', `no cipher to decrypt for ${mode}`)
diff --git a/src/utils/debugBus.ts b/src/utils/debugBus.ts
index a0d7e88c..7af1b322 100644
--- a/src/utils/debugBus.ts
+++ b/src/utils/debugBus.ts
@@ -20,7 +20,7 @@ export const DebugBus = {
     buffer.push(entry)
     if (buffer.length > MAX_BUFFER) buffer.shift()
     listeners.forEach(l => {
-      try { l(entry) } catch {}
+      try { l(entry) } catch (err) { console.warn('[DebugBus] listener error:', err) }
     })
   },
   info(source: string, message: string, data?: unknown): void { this.log('info', source, message, data) },