fix: gate mirror logging steps via token-check output

Agent-Logs-Url: https://github.com/th30d4y/OpenLearnX/sessions/46d635ed-7046-41a5-a1d6-d39ad7d81a99

Co-authored-by: Stalin-143 <161853795+Stalin-143@users.noreply.github.com>

.github/workflows/mirror-repo-events-to-logs.yml

@@ -24,16 +24,19 @@ jobs:
       LOG_ROOT_DIR: openlearnx-events
     steps:
       - name: Ensure personal access token exists
+        id: ensure_pat
         env:
           LOGS_REPO_PAT: ${{ secrets.LOGS_REPO_PAT }}
         run: |
           if [ -z "$LOGS_REPO_PAT" ]; then
             echo "::warning::Missing required secret: LOGS_REPO_PAT. Skipping event mirroring. See README.md for setup instructions."
-            exit 0
+            echo "has_pat=false" >> "$GITHUB_OUTPUT"
+          else
+            echo "has_pat=true" >> "$GITHUB_OUTPUT"
           fi
 
       - name: Checkout logs repository
-        if: ${{ secrets.LOGS_REPO_PAT != '' }}
+        if: ${{ steps.ensure_pat.outputs.has_pat == 'true' }}
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
         with:
           repository: th30d4y/LOGS
@@ -41,7 +44,7 @@ jobs:
           path: logs-repo
 
       - name: Append event payload to daily log file
-        if: ${{ secrets.LOGS_REPO_PAT != '' }}
+        if: ${{ steps.ensure_pat.outputs.has_pat == 'true' }}
         env:
           SOURCE_REPOSITORY: ${{ github.repository }}
           SOURCE_EVENT_NAME: ${{ github.event_name }}
@@ -100,7 +103,7 @@ jobs:
           fi
 
       - name: Commit and push logs
-        if: ${{ secrets.LOGS_REPO_PAT != '' }}
+        if: ${{ steps.ensure_pat.outputs.has_pat == 'true' }}
         run: |
           set -euo pipefail
           cd logs-repo