Add _read_json_body(request, max_bytes=1_000_000) to py/api: reads the
body in chunks, answers 413 past the cap (declared or streamed) and 400
for invalid or non-object JSON. Every JSON POST in the admin and logging
handlers goes through it; it is exposed as PromptManagerAPI._read_json_body
for the other route mixins.
Add _acquire_long_job(name) / _long_job_busy_response(label) on the API
object: one asyncio.Lock per job family, handed out as an async context
manager or None when busy, so a handler answers 409 instead of starting a
second scan. The duplicate scan and delete share the 'duplicates' family.
Vito Sansevero
b6f1e0a2c0