feat: add Code Farm cooperative idle game with plot-based crop system and pub/sub notifications

Implement a Farmville-style cooperative idle game mounted at `/game` with member-only play and public farm viewing. The data layer is pure and timestamp-driven with no background tick: plot states are derived from `ready_at` vs current time, never stored. Key features include plantable software projects (shell script through kernel) that build over real time, harvest for coins and XP, CI tier upgrades for faster builds, plot purchasing with doubling cost, watering mechanics for friends' builds, daily quests, and prestige system. All game endpoints negotiate HTML or JSON and return full farm state for single-request client refresh. Pub/sub notifications broadcast farm updates on `public.game.farm.{username}` topics. Database schema adds `game_farms`, `game_plots`, and `game_quests` tables with appropriate indexes.

tests/unit/services/news.py

@@ -221,7 +221,11 @@ def test_run_once_updates_existing_news_row(local_db, monkeypatch):
     assert get_table("news").count(external_id=external_id) == 1
 
 
-def test_get_article_images_filters_and_dedupes():
+def test_get_article_images_filters_and_dedupes(monkeypatch):
+    async def _allow(url):
+        return None
+
+    monkeypatch.setattr(news_mod.net_guard, "guard_public_url", _allow)
     html = (
         '<img src="http://img.test/a.png">'
         "<img src='http://img.test/a.png'>"