Maintainer ruling (2026-08-23): a retried bot turn never mints a fresh
session. retry_action() maps the #93091 item-1 reason enum to one of
resume / compress_then_resume / none:
- transient classes (runtime_offline, delivery_timeout, rate limit,
server error) re-run the same Bot Chat session once;
- context_overflow also re-runs the same session — the retried turn
goes through the pre-API compaction pass in conversation_loop.py,
which compacts the over-threshold transcript first (the one
sanctioned context mutation); no fresh-session escape hatch exists;
- auth/quota/config/model classes never auto-retry.
Wired at both delivery surfaces (fix the class, not one site):
bot_relay.deliver (relay handler) and _run_delivery (local
message_agent runner). Failed deliveries now carry the classified
reason in the structured error payload (error.data.reason).
Sabotage-verified: with the retry blocks removed, 3 consumer tests
fail; with them present, 22/22 pass.
Teknium
b274b346d8