``run_mandate_across_bundles`` has existed since session 58, reachable from FIVE
test files and from NO command line (measured: ``grep -n across-bundle run.py``
= 0 hits). ``--across-bundle <dir>``, repeated once per base, is that door.
The engine takes a CALLBACK rather than an outbox directory. Its own docstring
has always said N runs need N ``run_id``s and that minting them there would
default a key this repo requires a caller to supply -- so ``outbox_for`` is that
contract KEPT, not relaxed, and the operator-chosen ``<run-id>-<bundle_id>``
rule lives in ``main()`` where the decision was made. The order's alternative (a
caller running ``run_project`` itself over ``route_by_bundle``'s sub-mandates)
would be a second copy of the loop's id reconciliation, shared store, per-base
project resolution, collision accounting and both budget teeth.
``resolve_bundle_routing`` is ONE resolution shared by the engine and the
dry-run arm: a free trip answering with a different project id, or tolerating a
duplicate id the paid dispatch refuses, would rehearse a different run.
``{run-id}-multibase.json`` is written from a ``finally`` and every row is built
from the resolution plus disk, so the pass a cap cut short still leaves the
record. ``completed`` is a required field for ``ExplorationTrace.completed``'s
reason. ``stop_reason`` is read BACK from each base's own coverage artefact.
Load-bearing MEASURED (17 arms), four mutations all red against the WHOLE suite,
green control 1761/5 (from 1744/5, superset, 0 removed), golden byte-unchanged.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
