feat: 업무 상세 화면을 첨부파일 보기 전용으로 변경

상세 화면에서 첨부 업로드·삭제 UI/로직을 제거하고 목록 표시만 유지.
업로드는 작성·편집 화면에서만 가능하도록 일원화(미사용 스토어 액션·CSS 정리).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/pages/relay/TaskDetailPage.vue

@@ -14,7 +14,6 @@ import { useRoute, useRouter, RouterLink } from 'vue-router'
 import AppShell from '@/layouts/AppShell.vue'
 import {
   CHECKLIST_CATEGORIES,
-  type Attachment,
   type ChecklistCategory,
   type ChecklistItem,
   type Comment,
@@ -332,39 +331,8 @@ const commentTotal = computed(
 )
 
 /* ============================================================
- * 파일 첨부(5단계) — 업로드/삭제
+ * 파일 첨부 — 상세 화면은 목록 표시 전용(업로드/삭제는 작성·편집 화면에서만).
  * ============================================================ */
-const fileInput = ref<HTMLInputElement | null>(null)
-const uploading = ref(false)
-
-function pickFile() {
-  fileInput.value?.click()
-}
-async function onFileChange(e: Event) {
-  const input = e.target as HTMLInputElement
-  const file = input.files?.[0]
-  if (!file || !task.value) {
-    input.value = ''
-    return
-  }
-  uploading.value = true
-  try {
-    task.value = await taskStore.uploadFile(projectId.value, task.value.id, file)
-  } catch {
-    // 인터셉터가 알림 처리
-  } finally {
-    uploading.value = false
-    input.value = ''
-  }
-}
-async function removeFile(att: Attachment) {
-  if (!task.value || !att.id) return
-  try {
-    task.value = await taskStore.removeFile(projectId.value, task.value.id, att.id)
-  } catch {
-    // 인터셉터가 알림 처리
-  }
-}
 
 /* ============================================================
  * 키보드 / 외부 클릭 처리
@@ -1134,29 +1102,7 @@ function badgeFor(name: string | undefined): { label: string; cls: string } {
             <div class="side-field">
               <div class="side-label files-head">
                 <span>첨부파일 · {{ task.files.length }}개</span>
-                <button
-                  class="file-add"
-                  type="button"
-                  :disabled="uploading"
-                  @click="pickFile"
-                >
-                  <svg
-                    viewBox="0 0 24 24"
-                    fill="none"
-                    stroke="currentColor"
-                    stroke-width="2"
-                    stroke-linecap="round"
-                    stroke-linejoin="round"
-                  ><path d="M12 5v14M5 12h14" /></svg>
-                  {{ uploading ? '업로드 중…' : '추가' }}
-                </button>
               </div>
-              <input
-                ref="fileInput"
-                class="file-hidden"
-                type="file"
-                @change="onFileChange"
-              >
               <div
                 v-if="task.files.length"
                 class="files"
@@ -1179,22 +1125,6 @@ function badgeFor(name: string | undefined): { label: string; cls: string } {
                     target="_blank"
                     rel="noopener"
                   ><span class="file-name">{{ f.name }}</span><span class="file-size">{{ f.size }}</span></a>
-                  <button
-                    class="file-del"
-                    type="button"
-                    title="첨부 삭제"
-                    aria-label="첨부 삭제"
-                    @click="removeFile(f)"
-                  >
-                    <svg
-                      viewBox="0 0 24 24"
-                      fill="none"
-                      stroke="currentColor"
-                      stroke-width="2"
-                      stroke-linecap="round"
-                      stroke-linejoin="round"
-                    ><path d="M18 6 6 18M6 6l12 12" /></svg>
-                  </button>
                 </div>
               </div>
               <p
@@ -3018,34 +2948,6 @@ function badgeFor(name: string | undefined): { label: string; cls: string } {
   align-items: center;
   justify-content: space-between;
 }
-.file-add {
-  display: inline-flex;
-  align-items: center;
-  gap: 0.25rem;
-  border: 1px solid var(--border);
-  background: #fff;
-  font-family: inherit;
-  font-size: 0.719rem;
-  font-weight: 600;
-  color: var(--text-2);
-  padding: 0.1875rem 0.5rem;
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-}
-.file-add:hover {
-  background: #f5f6f8;
-}
-.file-add:disabled {
-  opacity: 0.6;
-  cursor: default;
-}
-.file-add svg {
-  width: 0.75rem;
-  height: 0.75rem;
-}
-.file-hidden {
-  display: none;
-}
 a.file-ico,
 a.file-info {
   text-decoration: none;
@@ -3057,31 +2959,6 @@ a.file-ico {
 a.file-info {
   color: inherit;
 }
-.file-del {
-  width: 1.5rem;
-  height: 1.5rem;
-  flex-shrink: 0;
-  display: grid;
-  place-items: center;
-  border: none;
-  background: transparent;
-  color: var(--text-3);
-  border-radius: var(--radius-sm);
-  cursor: pointer;
-  opacity: 0;
-  transition: opacity 0.12s;
-}
-.file:hover .file-del {
-  opacity: 1;
-}
-.file-del:hover {
-  background: var(--red-weak);
-  color: var(--red);
-}
-.file-del svg {
-  width: 0.875rem;
-  height: 0.875rem;
-}
 .files-empty {
   font-size: 0.781rem;
   color: var(--text-3);

frontend/src/stores/task.store.ts

@@ -328,26 +328,6 @@ export const useTaskStore = defineStore('task', () => {
     return refresh(projectId, taskId)
   }
 
-  /* ===================== 파일 첨부 (5단계) ===================== */
-
-  async function uploadFile(
-    projectId: string,
-    taskId: number,
-    file: File,
-  ): Promise<TaskDetailView> {
-    await taskApi.uploadFile(projectId, taskId, file)
-    return refresh(projectId, taskId)
-  }
-
-  async function removeFile(
-    projectId: string,
-    taskId: number,
-    fileId: string,
-  ): Promise<TaskDetailView> {
-    await taskApi.removeFile(projectId, taskId, fileId)
-    return refresh(projectId, taskId)
-  }
-
   /* ===================== 승인 워크플로우 (5단계) ===================== */
 
   async function requestApproval(
@@ -396,8 +376,6 @@ export const useTaskStore = defineStore('task', () => {
     changeStatus,
     addComment,
     addReply,
-    uploadFile,
-    removeFile,
     requestApproval,
     approve,
     requestChanges,