diff --git a/src/app/repository/commits.tsx b/src/app/repository/commits.tsx
index a3b5dc6..6afc7e6 100644
--- a/src/app/repository/commits.tsx
+++ b/src/app/repository/commits.tsx
@@ -350,9 +350,9 @@ export const RepoCommits = () => {
                           <span className="font-medium">
                             {commit.author?.name || "Unknown"}
                           </span>
-                          <span className="flex items-center gap-1" title={formatWithGlobalTimezone(commit.committer?.time_secs)}>
+                          <span className="flex items-center gap-1" title={commit.committer?.time_secs ? formatWithGlobalTimezone(new Date(commit.committer.time_secs * 1000).toISOString()) : undefined}>
                             <Calendar className="h-3.5 w-3.5" />
-                            {getRelativeTime(commit.committer?.time_secs)}
+                            {getRelativeTime(commit.committer?.time_secs ? new Date(commit.committer.time_secs * 1000).toISOString() : null)}
                           </span>
                         </div>
                       </div>
diff --git a/src/components/room/RoomMessageSearch.tsx b/src/components/room/RoomMessageSearch.tsx
index 7451398..825ee0f 100644
--- a/src/components/room/RoomMessageSearch.tsx
+++ b/src/components/room/RoomMessageSearch.tsx
@@ -37,11 +37,11 @@ export function RoomMessageSearch({ roomId, onSelectMessage, onClose }: RoomMess
 
     setIsSearching(true);
     try {
-      const resp = await client.get({
+      const resp = await client.get<any, { data?: SearchResult }>({
         url: `/api/rooms/${roomId}/messages/search`,
         params: { q: searchQuery, limit: 20, offset: searchOffset },
       });
-      const data = resp.data?.data as SearchResult | undefined;
+      const data = resp.data;
       if (data) {
         setResults(data);
         setOffset(searchOffset);
diff --git a/src/components/room/RoomPinPanel.tsx b/src/components/room/RoomPinPanel.tsx
index 0aa88cd..5fe20d1 100644
--- a/src/components/room/RoomPinPanel.tsx
+++ b/src/components/room/RoomPinPanel.tsx
@@ -58,7 +58,7 @@ interface RoomPinPanelProps {
   messages: Array<{
     id: string;
     content: string;
-    sender_id: string;
+    sender_id?: string | null;
     sender_type: string;
     send_at: string;
   }>;
diff --git a/src/components/ui/message-list.tsx b/src/components/ui/message-list.tsx
index 7f07542..933c758 100644
--- a/src/components/ui/message-list.tsx
+++ b/src/components/ui/message-list.tsx
@@ -24,7 +24,7 @@ export function MessageList({
 }: MessageListProps) {
   return (
     <div className="space-y-4 overflow-visible">
-      {messages.map((message, index) => {
+      {messages.map((message) => {
         const additionalOptions =
           typeof messageOptions === "function"
             ? messageOptions(message)
diff --git a/src/contexts/repository-context.tsx b/src/contexts/repository-context.tsx
index bcd74d2..1898f71 100644
--- a/src/contexts/repository-context.tsx
+++ b/src/contexts/repository-context.tsx
@@ -111,9 +111,10 @@ export const RepositoryContextProvider = ({
     // Return a minimal placeholder during loading to avoid unmounting
     // the entire subtree (which causes state loss and flash).
     const fallbackRepo: RepoInfo = {
-      id: '', name: '', namespace: '', display_name: '',
-      description: '', is_private: false, default_branch: '',
-      fork_count: 0, star_count: 0, watch_count: 0,
+      namespace: '', repo_name: '', uid: '',
+      description: null, is_private: false, default_branch: '',
+      commit_count: 0, branch_count: 0, tag_count: 0,
+      star_count: 0, watch_count: 0,
       last_commit_at: new Date().toISOString(),
       is_star: false, is_watch: false,
       ssh_clone_url: '', https_clone_url: '', ai_code_review_enabled: false,
diff --git a/src/hooks/use-audio-recording.ts b/src/hooks/use-audio-recording.ts
index d5458c5..f9ad7a8 100644
--- a/src/hooks/use-audio-recording.ts
+++ b/src/hooks/use-audio-recording.ts
@@ -77,8 +77,8 @@ export function useAudioRecording({
         console.error("Error recording audio:", error)
         setIsListening(false)
         setIsRecording(false)
-        if (stream) {
-          stream.getTracks().forEach((track) => track.stop())
+        if (audioStream) {
+          audioStream.getTracks().forEach((track: MediaStreamTrack) => track.stop())
         }
         setAudioStream(null)
       }
diff --git a/src/lib/universal-ws.ts b/src/lib/universal-ws.ts
index 6ad86c8..e12156c 100644
--- a/src/lib/universal-ws.ts
+++ b/src/lib/universal-ws.ts
@@ -89,7 +89,7 @@ export class UniversalWsClient {
         // Reject all pending requests
         const pending = [...this.pendingRequests.entries()];
         this.pendingRequests.clear();
-        for (const [id, req] of pending) {
+        for (const [_id, req] of pending) {
           clearTimeout(req.timeout);
           req.reject(new Error(`WebSocket closed: ${ev.reason || 'unknown'}`));
         }