fix(journal): restore weather + events panels; hide daily-prep system msg in chat

The journal UI was over-stripped earlier — weather panel, current-conditions
poll, and the upcoming-events sidebar were all dropped. Restored those (calls
the new /api/journal/weather, /api/journal/weather/current,
/api/journal/weather/refresh, /api/journal/weather/geocode endpoints).

Also: the daily-prep system message was rendering as flat text inside
ChatPanel because there's no .role-system bubble styling. Added a hideMessage
guard in ChatMessage so daily-prep system messages don't render in the chat
stream — they're already shown above as a structured prep card.

News / RSS reactions / article-discuss are intentionally NOT in the journal
(scoped out per user direction). The broader RSS infrastructure cleanup is
a separate, larger task.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/fabledassistant/services/journal_prep.py

@@ -5,7 +5,7 @@ new day). Gathers raw data into a structured prep block that becomes the
 first message of the day's journal Conversation.
 
 The output shape lives on Message.msg_metadata as:
-    { kind: 'daily_prep', sections: { tasks, events, weather, news,
+    { kind: 'daily_prep', sections: { tasks, events, weather,
       projects, recent_moments, open_threads } }
 
 Deliberately deterministic — no LLM call here. The journal LLM weaves
@@ -25,7 +25,6 @@ from fabledassistant.services.events import list_events
 from fabledassistant.services.journal_search import search_journal
 from fabledassistant.services.notes import list_notes
 from fabledassistant.services.projects import list_projects
-from fabledassistant.services.rss import get_recent_items
 from fabledassistant.services.weather import get_cached_weather_rows
 
 logger = logging.getLogger(__name__)
@@ -84,13 +83,6 @@ async def generate_daily_prep(
         logger.exception("daily_prep weather section failed for user %d", user_id)
         sections["weather"] = []
 
-    try:
-        news = await get_recent_items(user_id=user_id, limit=5)
-        sections["news"] = news
-    except Exception:
-        logger.exception("daily_prep news section failed for user %d", user_id)
-        sections["news"] = []
-
     try:
         projects = await list_projects(user_id=user_id, status="active")
         sections["projects"] = [