fix: remove --no-session-persistence (unsupported on claude 2.0.60)

Dalidou runs Claude Code 2.0.60 which does not have this flag
(added in 2.1.x). Removed from both extractor_llm.py and the
host-side batch script. --append-system-prompt and
--disable-slash-commands are supported on 2.0.60.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/atocore/memory/extractor_llm.py

@@ -168,7 +168,6 @@ def extract_candidates_llm_verbose(
         model or DEFAULT_MODEL,
         "--append-system-prompt",
         _SYSTEM_PROMPT,
-        "--no-session-persistence",
         "--disable-slash-commands",
         user_message,
     ]