Opus pre-release advisor caught a 5th issue not covered by my initial
follow-up sweep, this one CRITICAL: PR #1402#493 per-session toolset
override silently no-op'd every time.
Bug: api/streaming.py:1755 called _session_meta.get('enabled_toolsets') on
the result of Session.load_metadata_only(). It returns a Session INSTANCE,
not a dict. .get() raised AttributeError, which the surrounding bare
except swallowed silently. The toolset chip in the UI saved correctly to
disk, but the streaming agent always ran with global toolsets.
Fix: use getattr(_session_meta, 'enabled_toolsets', None).
Two new regression tests:
- Source-level: forbid the .get() / [] dict-access shape.
- Runtime: Session.load_metadata_only must return a Session instance.
Full suite: 3604 passed, 0 failed.