The boulder continuation in event-handler.ts skipped injection whenever
the last agent was 'sisyphus' and the boulder state had agent='atlas'
set explicitly. The allowSisyphusWhenDefaultAtlas guard required
boulderAgentWasNotExplicitlySet=true, but start-work-hook.ts always
calls createBoulderState(..., 'atlas') which sets the agent explicitly.
This created a chicken-and-egg deadlock: boulder continuation needs
atlas to be the last agent, but the continuation itself is what switches
to atlas. With /start-work, the first iteration was always blocked.
Fix: drop the boulderAgentWasNotExplicitlySet constraint so Sisyphus is
always allowed when the boulder targets atlas (whether explicit or default).
Also reduce todo-continuation-enforcer CONTINUATION_COOLDOWN_MS from
30s to 5s to match atlas hook cooldown and recover interruptions faster.
boulderState?.session_ids.includes() only guards boulderState, not
session_ids. If boulder.json is corrupted or missing the field,
session_ids is undefined and .includes() crashes silently, losing
subagent results.
Changes:
- readBoulderState: validate parsed JSON is object, default session_ids to []
- atlas hook line 427: boulderState?.session_ids?.includes
- atlas hook line 655: boulderState?.session_ids?.includes
- prometheus-md-only line 93: boulderState?.session_ids?.includes
- appendSessionId: guard with ?. and initialize to [] if missing
Fixes#1672
Main session was unconditionally allowed through the boulder session guard,
causing continuation injection into sessions not part of the active boulder.
Now only sessions explicitly in boulder's session_ids (or background tasks)
receive boulder continuation, matching todo-continuation-enforcer behavior.
When boulderState.agent is not explicitly set (defaults to 'atlas'),
allow continuation for sessions where the last agent is 'sisyphus'.
This fixes the issue where boulder continuation was skipped when
Sisyphus took over the conversation after boulder creation.
