PR #5 review flagged three behavior changes that shouldn't have slipped
in. This commit reverts each to match the pre-refactor behavior exactly.
1. User upsert ordering. Split the router hook into two setters:
setSenderResolver (runs before agent resolution) and setAccessGate
(runs after). Restores the pre-PR sequence where the users row is
upserted even if the message is dropped by wiring or trigger rules.
2. dropped_messages audit. Moved src/modules/permissions/db/dropped-messages.ts
back to src/db/dropped-messages.ts. The table is core audit infra, not
permissions-specific. Router re-writes rows for no_agent_wired and
no_trigger_match; the access gate writes rows for policy refusals.
3. Permissionless container fallback. Dropped. poll-loop restores the
original deny-all check when NANOCLAW_ADMIN_USER_IDS is empty.
Module contract doc updated with the two-hook shape.
Validation: host build clean, 137/137 host tests, 17/17 container
tests, typecheck clean, service boots to "NanoClaw running" with
permissions module registering both hooks and clean SIGTERM shutdown.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>