- Move env block from workflow root to job level (Forgejo requirement)
- Replace hardcoded IP with ${{ vars.SYSTEM_HOST }} variable
- Fixes 'yaml: line 11: did not find expected key' error
- Applies to all 4 workflows: botlib, botserver, bottest, botui
The test was creating BotRunner::new() without setting a bot, causing
execute_bot_logic to fail with 'No bot configured' and return
response: None. Now calls set_bot(Bot::default()) before the session.
