Phase labels are written ONLY when justifying events arrive. The
schedule clock is now a budget — an upper bound — never a label
source. This is the core honesty fix the §3 evidence demanded:
Before: every Tier-3 episode wrote `infected_running` from the
schedule clock regardless of whether session_open ever
fired. Per §10 every dishonest label is a poisoned
training example. 67/67 of the §3 probe episodes were
poisoned this way.
After: `infecting` writes ONLY when exploit_fire is observed in
events.jsonl. `infected_running` writes ONLY when
session_open is observed. Either timing out or seeing
session_open_timeout terminates the walker with a `failed`
label that the §4.6 acceptance gate will reject.
PHASE_JUSTIFYING_EVENTS in orchestrator/episode.py declares which
events justify which phases:
"clean": None # orchestrator-emitted
"armed": None # orchestrator-emitted
"infecting": ("exploit_fire",)
"infected_running": ("session_open",)
TERMINAL_FAILURE_EVENTS = {"session_open_timeout"} short-circuit any
event-driven wait into a `failed` label.
`dormant` is intentionally OFF the canonical schedule. §4.5 calls
for dormant to be event-driven (session_idle / session_active) too,
but the driver doesn't emit those yet. Per §1 default-to-removal we
ship without dormant rather than label it from the clock; when the
driver gains those emits, dormant re-enters the schedule with
proper justification.
EpisodeRunner now owns:
* `_event_log` — every emit_event appends here
* `_event_cv` — condition variable for waiters
* `_wait_for_event(names, since_t_mono_ns, timeout_s)` — returns
the first matching event in the log
with t_mono >= threshold; threshold
catches events that fired during
the previous on_phase callback.
When an event-driven phase's justifier already arrived (e.g.
exploit_fire emitted by driver._fire() inside on_phase("armed")),
the walker uses the EVENT's t_mono on the label — not the time the
walker noticed. The label means "this is when this thing actually
happened."
manifest.toml: dropped the dormant cycle from the canonical schedule.
Episode is shorter (~30s) but every label is event-justified.
14 new tests in tests/test_event_driven_labeller.py covering: justifier
mapping invariants, _wait_for_event semantics (already-arrived,
future, timeout, since-threshold, first-of-multiple-names), walker
behavior (orchestrator-emitted phases, event-driven phases, missing
event → failed, terminal-failure-event short-circuit, stop event,
event-t_mono on label, phase_transition events with justified_by).
286 tests passing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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