feat(journal): journal_closeout._filter_messages excludes daily_prep

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/fabledassistant/services/journal_closeout.py

@@ -0,0 +1,28 @@
+"""Journal closeout — nightly extraction of profile observations.
+
+Runs once per user per day at day_rollover_hour. Reads yesterday's /journal
+conversation, filters out assistant-authored auto-content (daily prep),
+asks the background LLM to extract user-side patterns/habits, and appends
+the bullets to user_profiles.observations_raw via append_observations.
+"""
+from __future__ import annotations
+
+# Message kinds whose content must NEVER be sent to the closeout LLM.
+# These are assistant-authored auto-blocks that would otherwise dominate
+# attention and leak back into "what the assistant has learned."
+EXCLUDED_KINDS: set[str] = {"daily_prep"}
+
+
+def _filter_messages(messages):
+    """Drop messages whose msg_metadata.kind is in EXCLUDED_KINDS.
+
+    Accepts any iterable of message-like objects with `role`, `content`,
+    and `msg_metadata` attributes (real Message rows or SimpleNamespace).
+    """
+    kept = []
+    for m in messages:
+        meta = getattr(m, "msg_metadata", None) or {}
+        if meta.get("kind") in EXCLUDED_KINDS:
+            continue
+        kept.append(m)
+    return kept