cron/scheduler.py no longer re-exports the split modules (scheduler_delivery /
_script / _prompt / _preflight); it imports only the 19 names it calls itself
(bottom-of-file, E402 kept for the import cycle). Dropped the shim-only
`import shutil` and the F401 note on windows_hide_flags (still used by
scheduler.py). Split modules now call same-module helpers directly, reach
sibling split modules via late-bound module refs (_delivery/_script/_preflight)
next to _sched, and import windows_hide_flags themselves; origin-resident names
(load_config, Path, _SCRIPT_TIMEOUT, heartbeat_run_claim, ...) still go through
_sched. Callers/tests import + patch the defining module.
A managed cron (created by a provisioning script, not from a live gateway
chat) never captures an origin. With cron.mirror_delivery: true and
deliver: origin, its brief was delivered to the home channel — the
user's own DM — but the transcript mirror and the in_channel session
seed were silently skipped: _target_matches_origin returns False for an
empty origin, and the whole continuable machinery keys off that check.
A user replying to the brief landed in a session with no record of it.
Field report 2026-08-17 (enterprise, Slack DM surface).
The June origin-scoping refactor (c06ceb3232) was written to exclude
broadcasts, and the exclusion is kept. What changes is the
classification: a home-channel FALLBACK for deliver=origin is the user's
primary conversation standing in for the origin, not a broadcast.
Changes:
- Delivery targets carry a resolution-provenance tag (_resolved_from:
origin / origin_fallback / explicit; broadcast expansions untagged).
- _target_mirror_eligible replaces the bare origin check at the mirror
gate: origin unchanged; origin_fallback eligible under the same flags
as origin (per-job attach_to_session wins, else global
cron.mirror_delivery); explicit platform:chat targets eligible ONLY
under per-job attach_to_session — the global flag never activates
them, so it cannot start writing transcript entries into arbitrary
explicitly-addressed chats. 'all'/bare-platform stay never-eligible.
- Dedup OR-merges provenance so 'origin,all' resolving to the same chat
keeps eligibility regardless of token order.
- _inchannel_seed_allowed guards the flat-session seed: group-channel
session keys are user-isolated, so a seed without a user_id (origin-
less job into a shared channel) would create an orphan session no
reply resolves to — those targets fall back to the plain mirror. DM
targets (keys don't embed user_id) always seed.
- cronjob tool schema text updated to describe the new attach scope.
Behavioral note: origin-less deliver=origin jobs under global
mirror_delivery now activate the full continuable path — on default
'thread' surface this opens a dedicated thread in the home channel
where the brief previously posted flat. That is the documented
continuable behavior; the silent flat post was the bug.
15 new tests (tests/cron/test_mirror_origin_fallback.py): eligibility
matrix (origin/fallback/explicit/all/bare/other-chat), dedup order
both ways, end-to-end mirror via _deliver_result for all four shapes,
origin regression control, seed user_id guard.
Route plugin target parsing, validation, and host-driven delivery through PlatformEntry across CLI and cron while preserving the host-only send_message policy.
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