The embedding client does not go through the chat onion -- embed() runs
its own chain down to _emit(), which builds a ChatRequest on the spot
and so far only fills session_id and parent_call_id. Changing chat()
alone would have left every embed row with empty dimensions, which is
exactly what the issue's second request asks for.
The bigger find: the draft claimed serialization could not fail because
the entry check already restricts values to scalars. It can. A float
passes a naive type check and json.dumps writes it as the literal NaN,
which is not valid JSON and which JSONB rejects; the failure then lands
in the emitter's degrade path and turns a caller's input error into
silently dropped telemetry. Now rejected at the entry with isfinite and
again at serialization with allow_nan=False.
Also states the validation runs at both public entries, not just chat(),
and adds the RLS template the design had promised but never wrote down.
iomgaa
b671fb629a