feat(run): arm + prime alerts, mid-session catchup, late-start guard

Notify on IDLE→ARMED and ARMED→PRIMED so the user gets staged warnings
before FIRE. If atm run starts mid-cycle on dark_green/dark_red, synth
a catchup arm so the prime alert still fires (audit tagged catchup:true).
If it starts on light_green/light_red, emit one late_start warn and skip
the FSM feed — FIRE already passed.

Extracted _handle_tick() as a pure helper (takes fsm + duck-typed
notifier/audit Protocols) so the dispatch is unit-testable without
mocking FanoutNotifier. 9 new tests cover arm, prime, refresh silence,
catchup synth-arm (+ audit), and late-start on both directions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

TODOS.md

@@ -23,6 +23,18 @@ Standalone helper `atm dump --duration 4h --dir samples/` that just captures fra
 
 Expand README with concrete Windows Task Scheduler XML export + import steps, example triggers for 16:30→18:30 and 21:00→23:00, and DST-change checklist reminder.
 
+## P2-alert-mute-flags
+
+Per-kind mute toggles for notifications in case arm/prime turn out too noisy in live sessions:
+
+- `cfg.notify.arm: bool = true`
+- `cfg.notify.prime: bool = true`
+- `cfg.notify.late_start: bool = true`
+
+Default all true. Gate each `notifier.send()` in `_handle_tick()` on the flag. Start after 3+ live sessions confirm the signal/noise ratio.
+
+Blocked on: Faza 1 baseline evidence.
+
 ## P3-faza2-exec
 
 Auto-execution on TradeLocker. Blocked on TOS audit (see `docs/phase2-prop-firm-audit.md`). Not started until GO decision + 20+ Faza 1 sessions.

src/atm/main.py

@@ -5,14 +5,25 @@ import argparse
 import os
 import sys
 import time
+from datetime import datetime
 from pathlib import Path
-from typing import TYPE_CHECKING, cast
+from typing import TYPE_CHECKING, Protocol, cast
 
 from atm.config import Config  # stdlib-only (tomllib); safe at module level
+from atm.notifier import Alert
+from atm.state_machine import State, StateMachine, Transition
 
 if TYPE_CHECKING:
     from atm.state_machine import DotColor
 
+
+class _NotifierLike(Protocol):
+    def send(self, alert: Alert) -> None: ...
+
+
+class _AuditLike(Protocol):
+    def log(self, event: dict) -> None: ...
+
 # Module-level reference — set lazily by _cmd_dryrun; tests may monkeypatch it.
 dryrun = None
 
@@ -324,14 +335,106 @@ def _cmd_report(args) -> None:
 # Live loop
 # ---------------------------------------------------------------------------
 
+def _handle_tick(
+    fsm: StateMachine,
+    color: str,
+    now: float,
+    notifier: _NotifierLike,
+    audit: _AuditLike,
+    first_accepted: bool,
+) -> Transition | None:
+    """Feed FSM for a single accepted color and dispatch arm/prime/late_start
+    alerts. Returns the final Transition, or None when the color triggered a
+    late-start short-circuit (FSM untouched; caller should skip FIRE handling).
+
+    Pure in the sense that all state lives in the arguments — safe to unit-test
+    with a FakeNotifier and FakeAudit.
+    """
+    # Late start: the very first accepted color is already at FIRE phase.
+    # User came online after the trade signal fired — warn and skip FSM feed.
+    if first_accepted and color in ("light_green", "light_red") and fsm.state == State.IDLE:
+        direction = "BUY" if color == "light_green" else "SELL"
+        audit.log({
+            "ts": now,
+            "event": "late_start",
+            "observed_color": color,
+        })
+        notifier.send(Alert(
+            kind="late_start",
+            title=f"ATM started late — {direction} already fired",
+            body=f"Observed {color} at startup. Check chart manually.",
+            direction=direction,
+        ))
+        return None
+
+    # Catchup synth-arm: first accepted color is already at PRIME phase.
+    # Drive FSM through a synthetic arm so the real PRIME transition fires a
+    # normal prime alert below. Audit entry is tagged catchup:true.
+    catchup = False
+    if first_accepted and color in ("dark_green", "dark_red") and fsm.state == State.IDLE:
+        assert fsm.state == State.IDLE, "synth-arm invariant: FSM must be IDLE"
+        arm_color = "turquoise" if color == "dark_green" else "yellow"
+        direction = "BUY" if color == "dark_green" else "SELL"
+        tr_synth = fsm.feed(cast("DotColor", arm_color), now)
+        audit.log({
+            "ts": now,
+            "event": "tick",
+            "color": arm_color,
+            "state": tr_synth.next.value,
+            "reason": tr_synth.reason,
+            "catchup": True,
+            "synthesized_from": color,
+        })
+        notifier.send(Alert(
+            kind="arm",
+            title=f"{direction} armed ({arm_color}) — catchup",
+            body=f"catchup — session already armed at startup "
+                 f"@ {datetime.fromtimestamp(now).isoformat(timespec='seconds')}",
+            direction=direction,
+        ))
+        catchup = True
+
+    # Normal FSM feed
+    tr = fsm.feed(cast("DotColor", color), now)
+    tick_event: dict = {
+        "ts": now,
+        "event": "tick",
+        "color": color,
+        "state": tr.next.value,
+        "reason": tr.reason,
+    }
+    if catchup:
+        tick_event["catchup"] = True
+    audit.log(tick_event)
+
+    # ARM: turquoise (BUY) / yellow (SELL) — only on fresh IDLE→ARMED
+    if tr.reason == "arm":
+        direction = "BUY" if tr.next == State.ARMED_BUY else "SELL"
+        notifier.send(Alert(
+            kind="arm",
+            title=f"{direction} armed ({color})",
+            body=f"@ {datetime.fromtimestamp(now).isoformat(timespec='seconds')}",
+            direction=direction,
+        ))
+    # PRIME: dark_green (BUY) / dark_red (SELL) — only on ARMED→PRIMED
+    elif tr.reason == "prime":
+        direction = "BUY" if tr.next == State.PRIMED_BUY else "SELL"
+        suffix = " — catchup" if catchup else ""
+        notifier.send(Alert(
+            kind="prime",
+            title=f"{direction} primed ({color}){suffix}",
+            body=f"@ {datetime.fromtimestamp(now).isoformat(timespec='seconds')}",
+            direction=direction,
+        ))
+    return tr
+
+
 def run_live(cfg, duration_s=None, capture_stub: bool = False) -> None:
     """Main live monitoring loop. Imports are lazy to keep --help fast."""
     try:
         from atm.detector import Detector
-        from atm.state_machine import StateMachine
         from atm.canary import Canary
         from atm.levels import LevelsExtractor
-        from atm.notifier import Alert
         from atm.notifier.fanout import FanoutNotifier
         from atm.notifier.discord import DiscordNotifier
         from atm.notifier.telegram import TelegramNotifier
@@ -351,7 +454,6 @@ def run_live(cfg, duration_s=None, capture_stub: bool = False) -> None:
     notifier = FanoutNotifier(backends, Path(cfg.dead_letter_path))
 
     # Sanity check: capture one frame, confirm canary matches calibration.
-    from datetime import datetime
     first_frame = capture()
     if first_frame is None:
         print("WARN: first capture returned None — window/region missing", flush=True)
@@ -378,6 +480,7 @@ def run_live(cfg, duration_s=None, capture_stub: bool = False) -> None:
     heartbeat_due = start + cfg.heartbeat_min * 60
     levels_extractor = None
     last_saved_color: str | None = None
+    first_accepted = True
     samples_dir = Path("samples")
     samples_dir.mkdir(exist_ok=True)
     fires_dir = Path("logs") / "fires"
@@ -401,11 +504,13 @@ def run_live(cfg, duration_s=None, capture_stub: bool = False) -> None:
             # detection
             res = detector.step(now)
             if res.accepted and res.color:
-                tr = fsm.feed(cast("DotColor", res.color), now)
-                audit.log({
-                    "ts": now, "event": "tick",
-                    "color": res.color, "state": tr.next.value, "reason": tr.reason,
-                })
+                is_first = first_accepted
+                first_accepted = False
+                tr = _handle_tick(fsm, res.color, now, notifier, audit, is_first)
+                if tr is None:
+                    # late_start short-circuit: FSM untouched, skip FIRE + corpus save
+                    time.sleep(cfg.loop_interval_s)
+                    continue
                 # corpus: save full frame on each new distinct color for later labeling
                 if res.color != last_saved_color:
                     ts_str = datetime.fromtimestamp(now).strftime("%Y%m%d_%H%M%S")

src/atm/notifier/__init__.py

@@ -5,7 +5,7 @@ from typing import Protocol
 
 @dataclass
 class Alert:
-    kind: str          # "trigger" | "heartbeat" | "levels" | "warn"
+    kind: str          # "trigger" | "heartbeat" | "levels" | "warn" | "arm" | "prime" | "late_start"
     title: str
     body: str
     image_path: Path | None = None  # annotated screenshot

tests/test_handle_tick.py

@@ -0,0 +1,220 @@
+"""Unit tests for atm.main._handle_tick.
+
+Covers the six cases from the arm+prime notification plan:
+  1. fresh BUY arm (turquoise)
+  2. fresh SELL arm (yellow)
+  3. BUY prime (turquoise → dark_green)
+  4. silent refresh (turquoise → turquoise)
+  5. catchup synth-arm from dark_green + prime alert, audit tagged catchup:true
+  6. late-start guard (light_green from IDLE with first_accepted=True)
+"""
+from __future__ import annotations
+
+from atm.main import _handle_tick
+from atm.notifier import Alert
+from atm.state_machine import State, StateMachine
+
+
+class FakeNotifier:
+    """Captures alerts instead of fanning out. send() is synchronous."""
+
+    def __init__(self) -> None:
+        self.alerts: list[Alert] = []
+
+    def send(self, alert: Alert) -> None:
+        self.alerts.append(alert)
+
+
+class FakeAudit:
+    """Captures audit events in-memory."""
+
+    def __init__(self) -> None:
+        self.events: list[dict] = []
+
+    def log(self, event: dict) -> None:
+        self.events.append(event)
+
+
+# ---------------------------------------------------------------------------
+# 1. fresh BUY arm
+# ---------------------------------------------------------------------------
+
+def test_handle_tick_arm_buy():
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    tr = _handle_tick(fsm, "turquoise", 1.0, notif, audit, first_accepted=False)
+
+    assert tr is not None
+    assert tr.next == State.ARMED_BUY
+    assert tr.reason == "arm"
+    assert len(notif.alerts) == 1
+    assert notif.alerts[0].kind == "arm"
+    assert notif.alerts[0].direction == "BUY"
+    assert "turquoise" in notif.alerts[0].title
+
+
+# ---------------------------------------------------------------------------
+# 2. fresh SELL arm
+# ---------------------------------------------------------------------------
+
+def test_handle_tick_arm_sell():
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    tr = _handle_tick(fsm, "yellow", 1.0, notif, audit, first_accepted=False)
+
+    assert tr is not None
+    assert tr.next == State.ARMED_SELL
+    assert len(notif.alerts) == 1
+    assert notif.alerts[0].kind == "arm"
+    assert notif.alerts[0].direction == "SELL"
+    assert "yellow" in notif.alerts[0].title
+
+
+# ---------------------------------------------------------------------------
+# 3. BUY prime — turquoise then dark_green
+# ---------------------------------------------------------------------------
+
+def test_handle_tick_prime_buy():
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    _handle_tick(fsm, "turquoise", 1.0, notif, audit, first_accepted=False)
+    tr2 = _handle_tick(fsm, "dark_green", 2.0, notif, audit, first_accepted=False)
+
+    assert tr2 is not None
+    assert tr2.next == State.PRIMED_BUY
+    assert len(notif.alerts) == 2
+    assert notif.alerts[0].kind == "arm"
+    assert notif.alerts[1].kind == "prime"
+    assert notif.alerts[1].direction == "BUY"
+    # Non-catchup prime alert must not mention catchup
+    assert "catchup" not in notif.alerts[1].title.lower()
+
+
+# ---------------------------------------------------------------------------
+# 4. refresh is silent — second turquoise in ARMED_BUY emits no alert
+# ---------------------------------------------------------------------------
+
+def test_handle_tick_refresh_no_alert():
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    _handle_tick(fsm, "turquoise", 1.0, notif, audit, first_accepted=False)
+    tr2 = _handle_tick(fsm, "turquoise", 2.0, notif, audit, first_accepted=False)
+
+    assert tr2 is not None
+    assert tr2.reason == "refresh"
+    assert len(notif.alerts) == 1  # only the first (real) arm
+
+
+# ---------------------------------------------------------------------------
+# 5. catchup synth-arm from dark_green with first_accepted=True
+# ---------------------------------------------------------------------------
+
+def test_handle_tick_catchup_dark_green():
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    tr = _handle_tick(fsm, "dark_green", 1.0, notif, audit, first_accepted=True)
+
+    # Synth arm + real prime feed → FSM lands in PRIMED_BUY
+    assert tr is not None
+    assert tr.next == State.PRIMED_BUY
+    assert tr.reason == "prime"
+
+    # Two alerts: synth-arm (catchup-tagged) + prime
+    assert len(notif.alerts) == 2
+    assert notif.alerts[0].kind == "arm"
+    assert notif.alerts[0].direction == "BUY"
+    assert "catchup" in notif.alerts[0].title.lower() or "catchup" in notif.alerts[0].body.lower()
+    assert notif.alerts[1].kind == "prime"
+    assert notif.alerts[1].direction == "BUY"
+    assert "catchup" in notif.alerts[1].title.lower() or "catchup" in notif.alerts[1].body.lower()
+
+    # Audit: both tick entries tagged catchup:true
+    catchup_events = [e for e in audit.events if e.get("catchup")]
+    assert len(catchup_events) == 2
+    synth = next(e for e in catchup_events if e.get("synthesized_from") == "dark_green")
+    assert synth["color"] == "turquoise"
+    assert synth["reason"] == "arm"
+
+
+def test_handle_tick_catchup_dark_red():
+    """Mirror of dark_green — SELL side."""
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    tr = _handle_tick(fsm, "dark_red", 1.0, notif, audit, first_accepted=True)
+
+    assert tr is not None
+    assert tr.next == State.PRIMED_SELL
+    assert len(notif.alerts) == 2
+    assert notif.alerts[0].direction == "SELL"
+    assert notif.alerts[1].direction == "SELL"
+
+
+# ---------------------------------------------------------------------------
+# 6. late-start: light_green from IDLE with first_accepted=True
+# ---------------------------------------------------------------------------
+
+def test_handle_tick_late_start():
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    tr = _handle_tick(fsm, "light_green", 1.0, notif, audit, first_accepted=True)
+
+    # FSM untouched
+    assert tr is None
+    assert fsm.state == State.IDLE
+
+    # Exactly one late_start alert
+    assert len(notif.alerts) == 1
+    assert notif.alerts[0].kind == "late_start"
+    assert notif.alerts[0].direction == "BUY"
+
+    # Audit has a late_start event
+    assert any(e.get("event") == "late_start" for e in audit.events)
+
+
+def test_handle_tick_late_start_sell():
+    """Mirror of light_green — light_red triggers SELL late_start."""
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    tr = _handle_tick(fsm, "light_red", 1.0, notif, audit, first_accepted=True)
+
+    assert tr is None
+    assert fsm.state == State.IDLE
+    assert len(notif.alerts) == 1
+    assert notif.alerts[0].kind == "late_start"
+    assert notif.alerts[0].direction == "SELL"
+
+
+# ---------------------------------------------------------------------------
+# Extra guard: first_accepted=True with turquoise is a normal arm (decision 3A)
+# ---------------------------------------------------------------------------
+
+def test_handle_tick_first_turquoise_no_catchup_label():
+    fsm = StateMachine(lockout_s=60)
+    notif = FakeNotifier()
+    audit = FakeAudit()
+
+    tr = _handle_tick(fsm, "turquoise", 1.0, notif, audit, first_accepted=True)
+
+    assert tr is not None
+    assert tr.next == State.ARMED_BUY
+    assert len(notif.alerts) == 1
+    assert notif.alerts[0].kind == "arm"
+    # Decision 3A: cannot distinguish fresh arm from catchup-at-arm-phase
+    assert "catchup" not in notif.alerts[0].title.lower()
+    assert "catchup" not in notif.alerts[0].body.lower()