The pipecat, cartesia, and agent-framework packages passed search results
into dedup/format helpers written for plain dicts, but typed SDK results
are pydantic models (snake_case attributes, no dict interface). pipecat
and cartesia crashed with AttributeError — swallowed upstream, so no
memories were ever injected for users with search results — while
agent-framework silently dropped every search-result memory.
Extract memory fields through a tolerant accessor that accepts both the
camelCase dicts returned by the profile endpoint and SDK result models,
so the helpers work regardless of installed SDK version.
The pipecat/cartesia dependency stubs move from test_empty_profile.py
into a shared tests/conftest.py so the new utils tests can reuse them.
Fixes#1266
