remove obsolete main_language placeholders and language summary template text
limit generated .agents guidance to configured langs and normalize AGENT_RULES trailing newlines
document install_skills no_backup behavior and refresh tests for deployment links and sync flows
Unhide the tracked docs and test updates that were left under assume-unchanged, remove the shipped tsl-guide skill, and align the deploy_root-related test coverage with the current external-clone rules.
replace the old select/record progress flow with a single main_loop claim/finish CLI.
route template execution through main_loop only, remove the legacy plan_progress entry points, and update tests to enforce the new behavior.
csh