Fix: Handle None request_overrides in gateway/run.py

[matt-legrand]

Summary

Fixes AttributeError: 'NoneType' object has no attribute 'get' when request_overrides is None in gateway/run.py.

Root Cause

When service_tier is empty/falsy, _resolve_turn_route() sets route['request_overrides'] = None. This None is then directly assigned to agent.request_overrides at line 6974, bypassing the safe dict() initialization in run_agent.py line 678.

Later, _build_api_kwargs() at line 5522 calls self.request_overrides.get('speed') which crashes on None.

Fix

# gateway/run.py line 6974
agent.request_overrides = turn_route.get("request_overrides") or {}

This ensures request_overrides is always a dict, matching the constructor's safe initialization.

Testing

• Verified fix resolves the AttributeError on local Hermes instance
• No other changes to behavior when request_overrides is properly populated

Credits

Issue identified by @li3500764 in issue #7259.

[alt-glitch]

Likely duplicate of #7350 (merged) — same NoneType request_overrides fix. The referenced issue #7259 is already closed.

[teknium1]

Thanks for the focused fix. This is an automated hermes-sweeper review; the requested None-safety is already implemented on current main.

• Merged PR fix: handle NoneType request_overrides in fast_mode check #7350 (0bea603510494629bdbd7c2c3397158fb33e5b91) added the direct API-helper guard; current code retains it at agent/chat_completion_helpers.py:688.
• Gateway routing now emits {} rather than None when fast mode is disabled or unsupported (gateway/run.py:3921, gateway/run.py:3928).
• The cached-agent update also applies the same normalization proposed here at gateway/run.py:18273.
• Regression coverage explicitly verifies request_overrides = None does not crash at tests/run_agent/test_provider_parity.py:394-400.

The member note identifying #7350 as the duplicate is confirmed.