adds a lot of improvements to launch.sh and demo spaces and secures read token at demo launch

improves spaces deployment , configuration for custom settings , adds interface for spaces deployment

adds repoid only based on repo name, adds version-robust sfttrainer

hide all tokens in logs, never persist to disk, remove max_seq_length from config, add to trainer

adds single token logic read/write , adds gpt-oss demo space , adds spaces refactor , adds new version of track tonic , adds logic in launch.sh

adds readme, removes quantization, adds readtoken logic, updates trackio , spaces