READY light: pods report load-complete to the operator roster

The roster showed "registered" for a still-loading pod and a ready one
alike -- with multi-minute contended loads the operator couldn't tell
who they'd be waiting on.  When the app ladder reaches WaitingForLaunch
the pod sends one empty route -10 frame on its live relay game socket
(BTRelayNotifyReady; socket mirrored at HELLO); the relay announces
SEAT n READY (k/m loaded) and the console GUI lights the seat
bright-green with a "N pod(s) LOADED+READY" banner.

Verified LIVE by the operator: blue (seated) -> teal (registered) ->
green (ready) in order, twice.  Also resolved the load-speed mystery:
loads are ~30s uncontended; the 1-2+ minute cases were assistant
background test runs competing with the user's interactive sessions on
the same machine (memory note added -- no game-spawning tests while the
user is testing).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tools/btoperator.py

@@ -46,11 +46,12 @@ import eggmodel  # noqa: E402
 # ---------------------------------------------------------------------------
 
 ST_SEATED = "seated"
+ST_READY = "ready"
 ST_IDLE, ST_EGG, ST_REGISTERED, ST_LAUNCHED = (
     "waiting", "egg sent", "registered", "LAUNCHED")
 ST_COLORS = {ST_IDLE: "#666666", ST_EGG: "#b58900",
              ST_REGISTERED: "#2aa198", ST_LAUNCHED: "#33cc55",
-             ST_SEATED: "#268bd2"}
+             ST_SEATED: "#268bd2", ST_READY: "#8be000"}
 
 
 class SessionMonitor:
@@ -65,6 +66,7 @@ class SessionMonitor:
     RE_RELAY_SEAT = re.compile(
         r"SEAT (\d+) PRESENT tag='([^']*)' callsign='([^']*)' mech='([^']*)'")
     RE_RELAY_FREED = re.compile(r"SEAT (\d+) FREED tag='([^']*)'")
+    RE_RELAY_READY = re.compile(r"SEAT (\d+) READY tag='([^']*)'")
     RE_MESH_EGG = re.compile(r"\[([^\]]+)\] egg sent")
     RE_MESH_RUN = re.compile(r"\[([^\]]+)\] RunMission #(\d+) sent")
 
@@ -112,10 +114,16 @@ class SessionMonitor:
                     self.state[tag] = ST_IDLE
                     self.seat_info.pop(tag, None)
                     changed = True
+            m = self.RE_RELAY_READY.search(line)
+            if m:
+                tag = m.group(2)
+                if tag in self.state:
+                    self.state[tag] = ST_READY
+                    changed = True
             m = self.RE_RELAY_REG.search(line)
             if m:
                 tag = self.host_tag(int(m.group(1)))
-                if tag:
+                if tag and self.state.get(tag) != ST_READY:
                     self.state[tag] = ST_REGISTERED
                     changed = True
             m = self.RE_RELAY_DOWN.search(line)
@@ -713,11 +721,15 @@ class Operator(QMainWindow):
             parts.append('<span style="color:%s">⬤</span> %s <i>%s</i>'
                          % (ST_COLORS[state], tag, state))
         seated = sum(1 for s in self.monitor.state.values() if s == ST_SEATED)
+        ready_n = sum(1 for s in self.monitor.state.values() if s == ST_READY)
         if self.monitor.launched:
             head = "LAUNCHED — mission running"
             if (self.console_proc and not self.end_btn.isEnabled()
                     and not getattr(self, "end_sent", False)):
                 self.end_btn.setEnabled(True)
+        elif ready_n:
+            head = ("%d pod(s) LOADED+READY — LAUNCH starts them instantly"
+                    % ready_n)
         elif self.monitor.ready:
             head = "ALL PODS READY — press LAUNCH MISSION"
         elif seated: