diff --git a/src/components/SprintBoard.tsx b/src/components/SprintBoard.tsx
index 4ea9437..d1845d0 100644
--- a/src/components/SprintBoard.tsx
+++ b/src/components/SprintBoard.tsx
@@ -25,6 +25,7 @@ import { Plus, Calendar, Flag, GripVertical } from "lucide-react"
 import { format, parseISO } from "date-fns"
 
 const statusColumns = ["backlog", "in-progress", "review", "done"] as const
+type SprintColumnStatus = typeof statusColumns[number]
 
 const statusLabels: Record<string, string> = {
   backlog: "To Do",
@@ -149,7 +150,6 @@ export function SprintBoard() {
     selectedSprintId,
     selectSprint,
     selectedProjectId,
-    selectedTaskId,
     updateTask,
     selectTask,
     addSprint,
@@ -224,7 +224,7 @@ export function SprintBoard() {
     const overId = over.id as string
 
     // Check if dropped over a column
-    if (statusColumns.includes(overId as any)) {
+    if (statusColumns.includes(overId as SprintColumnStatus)) {
       updateTask(taskId, { status: overId as Task["status"] })
       return
     }
diff --git a/src/components/ui/textarea.tsx b/src/components/ui/textarea.tsx
index c61fd6e..855b0f9 100644
--- a/src/components/ui/textarea.tsx
+++ b/src/components/ui/textarea.tsx
@@ -1,8 +1,7 @@
 import * as React from "react"
 import { cn } from "@/lib/utils"
 
-export interface TextareaProps
-  extends React.TextareaHTMLAttributes<HTMLTextAreaElement> {}
+export type TextareaProps = React.TextareaHTMLAttributes<HTMLTextAreaElement>
 
 const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
   ({ className, ...props }, ref) => {
diff --git a/src/stores/useTaskStore.ts b/src/stores/useTaskStore.ts
index c498043..a5beb3b 100644
--- a/src/stores/useTaskStore.ts
+++ b/src/stores/useTaskStore.ts
@@ -485,21 +485,23 @@ const normalizeCommentAuthor = (value: unknown): CommentAuthor => {
 const normalizeComments = (value: unknown): Comment[] => {
   if (!Array.isArray(value)) return []
 
-  return value
-    .map((entry) => {
-      if (!entry || typeof entry !== 'object') return null
-      const candidate = entry as Partial<Comment>
-      if (typeof candidate.id !== 'string' || typeof candidate.text !== 'string') return null
+  const comments: Comment[] = []
+  
+  for (const entry of value) {
+    if (!entry || typeof entry !== 'object') continue
+    const candidate = entry as Partial<Comment>
+    if (typeof candidate.id !== 'string' || typeof candidate.text !== 'string') continue
 
-      return {
-        id: candidate.id,
-        text: candidate.text,
-        createdAt: typeof candidate.createdAt === 'string' ? candidate.createdAt : new Date().toISOString(),
-        author: normalizeCommentAuthor(candidate.author),
-        replies: normalizeComments(candidate.replies),
-      }
+    comments.push({
+      id: candidate.id,
+      text: candidate.text,
+      createdAt: typeof candidate.createdAt === 'string' ? candidate.createdAt : new Date().toISOString(),
+      author: normalizeCommentAuthor(candidate.author),
+      replies: normalizeComments(candidate.replies),
     })
-    .filter((comment): comment is Comment => comment !== null)
+  }
+  
+  return comments
 }
 
 const normalizeAttachments = (value: unknown): TaskAttachment[] => {