1. gateway/platforms/slack.py: Replace check-then-set TOCTOU race on
_approval_resolved with atomic dict.pop(). Two concurrent button
clicks could both pass the guard before either set it to True,
causing double resolve_gateway_approval — which can resolve the
WRONG queued approval when multiple are pending for the same session.
2. hermes_state.py: Add WARNING log and proper fallbacks when
json.loads fails on tool_calls (→ []), reasoning_details (→ None),
and codex_reasoning_items (→ None). Previously, failures were
silently swallowed: tool_calls stayed as a raw string (iterating
yields characters, not objects), and reasoning fields were simply
missing from the dict.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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