fix: use existing labels in all workflows

- Replace non-existent labels with existing ones
- integration -> auto-updated
- automated -> (removed)
- sync -> auto-updated
- release -> released
- beta -> (removed)

This fixes 'label not found' errors in PR creation

Author: Seungwoo321

.github/workflows/integrate-develop.yml

@@ -109,8 +109,7 @@ jobs:
             --head develop \
             --title "🔄 Integrate develop → staging" \
             --body-file pr-body.md \
-            --label "integration" \
-            --label "automated"
+            --label "auto-updated"
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -148,7 +147,6 @@ jobs:
           
           # Add labels
           gh pr edit $PR_NUMBER \
-            --add-label "auto-updated" \
             --add-label "needs-review"
           
           # Set as ready for review

.github/workflows/release-staging.yml

@@ -204,9 +204,8 @@ npm install @vue-pivottable/lazy-table-renderer@beta
 
 ---
 *This PR was automatically created by the staging release workflow*" \
-            --label "release" \
-            --label "automated" \
-            --label "beta"
+            --label "released" \
+            --label "auto-updated"
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -258,7 +257,6 @@ EOF
 
           # Update labels
           gh pr edit $PR_NUMBER \
-            --add-label "auto-updated" \
             --add-label "needs-review"
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/update-version.yml

@@ -174,8 +174,7 @@ jobs:
             --head $SYNC_BRANCH \
             --title "🔄 Sync: main → develop (v$VERSION)" \
             --body-file pr-body.md \
-            --label "sync" \
-            --label "automated"
+            --label "auto-updated"
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -222,8 +221,7 @@ jobs:
             --head $SYNC_BRANCH \
             --title "🔄 Sync: main → staging (v$VERSION)" \
             --body-file pr-body-staging.md \
-            --label "sync" \
-            --label "automated"
+            --label "auto-updated"
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}