The Discord adapter resolves username allowlist entries to numeric IDs at
connect and mirrors them into os.environ — but the gateway's per-turn .env
hot-reload (load_hermes_dotenv(override=True)) restores the raw usernames
from the file. From the second agent turn onward, _is_user_authorized
compared numeric user_ids against username strings and dropped every
message from the operator as 'Unauthorized user' while the adapter layer
still admitted them (bot reacted, never replied).
Fix: gateway authz unions the adapter's resolved numeric IDs
(DiscordAdapter.resolved_allowlist_user_ids()) into the env-derived
allowlist. Union only fires when an env allowlist is configured (never a
widening; fail-closed branch unchanged), is duck-typed + isinstance-guarded
against mock adapters, and filters non-numeric entries so unresolved
usernames and '*' can't leak through adapter memory.
Live repro: symptom fired on origin/main (authorized=False after reload),
passes with fix; stranger + empty-allowlist + raising-resolver negatives
hold. Sabotage run: incident test fails on unfixed authz_mixin.
a0a63a1bc2