Day-extension guard (the H1 gap from the prior review): the trigger-extension
ceiling only sees distance above the ORB high, so a name up huge intraday whose
break is itself CLEAN slips through — real example ATPC, entered +1.7% above the
trigger yet +32% above the session open, now a loser. New guard blocks when the
entry is > day_extension_max_pct above the SESSION OPEN. Default 0.30 calibrated
on 22 real fires: normal entries are <=14% above the open, the parabolic tail is
20-83% (ICCM +83/+41, BIRD +36, ATPC +34/+32, NEOV +29). day_open is computed in
step_arm (first RTH bar open), carried on ArmedTrigger, checked in
submit_breakout_now. Env TRADING_DAY_EXTENSION_MAX_PCT; 0 = off.
Percentage breakeven (the "ratchet to a better stop once it works" request): the
broker-side stop ratchet already exists (exit_manager replace_order), but its
earliest move was +1R — a big move for a wide opening-range stop. breakeven_at_pct
moves the stop to entry once price is +this fraction above entry, BEFORE 1R, so a
pop that reverses can't round-trip to a loss (the documented small-cap failure).
Lives in the shared strategy/exits._trail_stop (backtest + live agree), only ever
ratchets up. Default 0.05 live (TRADING_EXIT_BREAKEVEN_PCT); _is_active updated so
the manager runs when it's the only rule set.
tests/unit: 160 passed (+ day-ext block/allow/no-open, + pct-breakeven move/hold/
saves-reverser).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
