Root cause: MT5 actually reads live EA inputs from
MQL5/Profiles/Charts/Default/chartNN.chr at boot, not from the .set
presets -- and it never rewrites that file on container shutdown
(files were found frozen at their Aug 6 mtimes through every restart
since, including graceful ones with stop_grace_period). This is why
the XAUUSD spread-filter fix (Jul 30) and the Monday A/B reversion
(Aug 10) both kept reverting after restarts.
sync-ea-inputs.sh (+ .py) runs on every container boot via
custom-cont-init.d, before MT5 launches, and writes each chart's
matching bo-*.set values directly into its .chr cache -- bypassing
MT5's broken save-on-exit path entirely. Validated with a real
corrupt-then-restart-then-verify cycle (see vault note).
Deployed copy lives at ~/mt5-docker/custom-cont-init.d/ (mt5-docker
is not a git repo); this is the tracked source, kept in sync with the
deployed version by hand like the other scripts here (e.g.
export-history.sh).
