ci: switch claude.yml to use claude-bot token [skip ci]

Use CLAUDE_BOT_TOKEN (dedicated bot user) instead of FORGEJO_CLAUDE_TOKEN
(personal token). Comments and commits will now appear as claude-bot.

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

.forgejo/workflows/claude.yml

@@ -37,7 +37,9 @@ jobs:
         uses: ./
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
-          github_token: ${{ secrets.FORGEJO_CLAUDE_TOKEN }}
+          github_token: ${{ secrets.CLAUDE_BOT_TOKEN }}
+          bot_id: "48"
+          bot_name: "claude-bot"
           platform: "forgejo"
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}