Rebased onto main (~9700 commits): the branch predates the god-file
decomposition and the tests/state -> tests/hermes_state move.
Fixes for seams that moved:
- cron memory contract patches cron.scheduler_delivery._resolve_origin and
hermes_state_registry.acquire (where run_job now reads them).
- state.db conformance imports _live_writer_holds_db from
hermes_state_repair and drives the public create_quick_snapshot.
- update receipt: serve runtimes are reconciled in their own unit
vocabulary since #100479, so the "full accounting" row names the serve
unit instead of borrowing a gateway relaunch.
Deleted (change-detectors / source-greps / duplicates / dead code):
- source-text scan of hermes_state*.py for "maintenance-shaped" defs and
the symbol REGISTRY it fed (renames are not regressions).
- per-op exact-outcome table under a live writer -> one invariant: refuse
with a lock error or report zero work, DB stays intact.
- copy_db_and_verify pins: the symbol is a revert-scheduled plugin-compat
pointer, not production code (check_compat_pointers.py).
- cron ON-direction tests already pinned by tests/cron/test_scheduler.py,
plus a tautology that never called production code.
- exact warning-wording asserts in the env deprecation truth table.
- same-file duplicates: fixed-point (implied by idempotence), tripwire
round-trips, absent-registry, sequential "race" re-enactment.
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