fix: marketable entries price from live last + time-of-day rvol arms fast path

Day-22 forensic (BIYA session): 6 entry submissions, 0 fills — IREX missed
+1.7R, IRE +1.65R by one cent. Two root causes fixed:

1. Slow-path limit rested AT the trigger while price ran 2% past it, and
   retries reused the same stale price. Marketable model now prices from
   max(trigger, live last) via price_provider; the anti-chase extension
   gate gets the live ref too (was an entry_ref==trigger no-op on this
   path). TRADING_ENTRY_FILL_MODEL flipped to marketable.

2. Fast trigger path armed nothing all day: legacy rvol (cum-so-far /
   full-day MEAN) is ~0.1-0.3 minutes after the open for a normal heavy
   name and its mean is poisoned by reverse-split/prior-squeeze days
   (BIYA legacy 1.27 vs real activity 481x median). New rvol_tod =
   cum / (MEDIAN(20d) * elapsed-session fraction) drives arm eligibility
   and the scanner keep-filter; legacy rvol untouched for validated
   boundaries (gap-squeeze rvol>=5).

Also: stagnation time-stop (TRADING_EXIT_STAGNATION_MIN/_R, default OFF)
in simulate_exit + manage_live with sweep_exits.py variants for
validation before any live enable.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

runtime/triggers.py

@@ -56,6 +56,12 @@ class ArmedTrigger:
     gap_pct: float = 0.0            # DYNAMIC gap (latest vs prev close) — display/rank only
     gap_open_pct: float | None = None  # STATIC overnight gap (session open vs prev close)
     rvol: float = 0.0
+    # time-of-day rvol (cum vs median(20d) prorated by elapsed session) — the arm
+    # eligibility signal. Legacy rvol is full-day-mean based: ~0.1-0.3 minutes
+    # after the open for a NORMAL heavy name, so rvol_min=2 vs legacy armed almost
+    # nothing early (07-20: IREX 0.76/IRE 0.58/BIYA 1.27 all stuck "weak" while
+    # breaking out; tod = 16.8/11.9/481). None -> fall back to legacy rvol.
+    rvol_tod: float | None = None
     trigger: float | None = None  # opening-range high (entry breakout level)
     stop: float | None = None     # opening-range low, cushioned (protective stop)
     range_pct: float = 0.0        # (high-low)/high — how wide the opening range is
@@ -86,6 +92,7 @@ class ArmedTrigger:
             "rank": self.rank,
             "gap": round(self.gap_pct, 2),
             "rvol": round(self.rvol, 2),
+            "rvol_tod": round(self.rvol_tod, 2) if self.rvol_tod is not None else None,
             "trigger": round(self.trigger, 4) if self.trigger else None,
             "stop": round(self.stop, 4) if self.stop else None,
             "price": round(self.price, 4) if self.price else None,
@@ -140,7 +147,8 @@ class ArmedTriggerBook:
             and t.stop is not None
             and t.stop < t.trigger
             and self._gap_ok(t)
-            and t.rvol >= self.rvol_min
+            # tod rvol when the scanner provides it; legacy full-day-mean otherwise
+            and (t.rvol_tod if t.rvol_tod is not None else t.rvol) >= self.rvol_min
             and t.range_pct >= self.min_range_pct
             and t.dollar_vol >= self.min_dollar_vol
         )
@@ -172,6 +180,8 @@ class ArmedTriggerBook:
             _go = c.get("gap_open_pct")
             t.gap_open_pct = float(_go) if _go is not None else None
             t.rvol = float(c.get("rvol") or 0.0)
+            _rt = c.get("rvol_tod")
+            t.rvol_tod = float(_rt) if _rt is not None else None
             t.trigger = c.get("trigger")
             t.stop = c.get("stop")
             t.range_pct = float(c.get("range_pct") or 0.0)