Add training audit logger, open sudo for playtesting

- Structured JSONL audit log for every pray/sudo interaction
- Bug_log feedback linked to last interaction with trust-level tagging
- sudo_allow_all_players config flag for playtest mode (enabled)
- training_audit_path config key (/var/log/mc_training_audit.jsonl)
- Deployed to CT 644 paper-ai server

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mc_aigod_paper.json

@@ -37,7 +37,9 @@
   "debug_commands": true,
   "sudo_enabled": true,
   "sudo_user": "slingshooter08",
+  "sudo_allow_all_players": true,
   "sudo_max_commands": 12,
+  "training_audit_path": "/var/log/mc_training_audit.jsonl",
   "bug_log_path": "/var/log/mc_aigod_paper_bug.log",
   "bug_log_event_lines": 40,
   "bug_log_raw_lines": 120,