refactor: use org-wide COMMAND_BOT_PAT for docs PR

Replace custom DOCS_PR_TOKEN with the existing COMMAND_BOT_PAT secret
already used across the Nextcloud org. This avoids creating a new token
and lets the command bot author the documentation PR.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: miaulalala

.github/workflows/screenshots.yml

@@ -91,22 +91,22 @@ jobs:
           if-no-files-found: warn
 
       # Opens a PR against nextcloud/documentation with updated screenshots.
-      # Requires a PAT with repo scope stored as DOCS_PR_TOKEN in the activity repo secrets.
+      # Uses the org-wide COMMAND_BOT_PAT secret.
       # The step is skipped gracefully if the secret is not configured.
       - name: Open PR against nextcloud/documentation
-        if: inputs.open-docs-pr != false && env.DOCS_PR_TOKEN != ''
+        if: inputs.open-docs-pr != false && env.COMMAND_BOT_PAT != ''
         env:
-          DOCS_PR_TOKEN: ${{ secrets.DOCS_PR_TOKEN }}
+          COMMAND_BOT_PAT: ${{ secrets.COMMAND_BOT_PAT }}
         run: |
           DOCS_BRANCH="chore/activity-screenshots-$(date +%Y%m%d-%H%M%S)"
           SCREENSHOT_DIR="cypress/snapshots/actual/screenshots.cy.ts"
 
           # Clone the documentation repo using the PAT
-          git clone --depth 1 "https://x-access-token:${DOCS_PR_TOKEN}@github.com/nextcloud/documentation.git" /tmp/documentation
+          git clone --depth 1 "https://x-access-token:${COMMAND_BOT_PAT}@github.com/nextcloud/documentation.git" /tmp/documentation
           cd /tmp/documentation
 
-          git config user.name "nextcloud-activity-bot"
-          git config user.email "noreply@nextcloud.com"
+          git config user.name "nextcloud-command"
+          git config user.email "nextcloud-command@users.noreply.github.com"
           git checkout -b "$DOCS_BRANCH"
 
           # Copy user screenshots
@@ -132,7 +132,7 @@ jobs:
           git push origin "$DOCS_BRANCH"
 
           # Create the PR
-          GH_TOKEN="${DOCS_PR_TOKEN}" gh pr create \
+          GH_TOKEN="${COMMAND_BOT_PAT}" gh pr create \
             --repo nextcloud/documentation \
             --base master \
             --head "$DOCS_BRANCH" \