Use four fixed daily publish slots

backend/.env.example

@@ -40,9 +40,9 @@ PIPELINE_RELEVANCE_AUTO=80
 # Relevanz-Score >= dieser Wert, aber < AUTO: Telegram-Warnung senden
 PIPELINE_RELEVANCE_WARN=60
 # Maximale Veröffentlichungen pro Tag innerhalb des Fensters unten
-PIPELINE_MAX_DRAFTS_PER_DAY=3
+PIPELINE_MAX_DRAFTS_PER_DAY=4
 # Bevorzugte Veröffentlichungszeiten (Stunden, kommagetrennt, Europe/Berlin)
-PIPELINE_PUBLISH_HOURS=9,14
+PIPELINE_PUBLISH_HOURS=9,12,15,18
 # Frühester/spätester Slot sowie Mindestabstand für zusätzliche Slots
 PIPELINE_PUBLISH_START_HOUR=9
 PIPELINE_PUBLISH_END_HOUR=19

backend/app/config.py

@@ -44,8 +44,8 @@ class Settings(BaseSettings):
     # Pipeline behaviour
     pipeline_relevance_auto: int = 80    # >= this: auto-process
     pipeline_relevance_warn: int = 60    # >= this: Telegram warning, else reject
-    pipeline_max_drafts_per_day: int = 3
-    pipeline_publish_hours: str = "9,14"  # comma-separated preferred publish hours (CET)
+    pipeline_max_drafts_per_day: int = 4
+    pipeline_publish_hours: str = "9,12,15,18"  # comma-separated preferred publish hours (CET)
     pipeline_publish_start_hour: int = 9
     pipeline_publish_end_hour: int = 19
     pipeline_publish_min_gap_hours: int = 3

backend/app/scheduler.py

@@ -2,8 +2,8 @@
 
 Calculates suggested publish slots for new WordPress drafts.
 Rules:
-- Preferred slots: configurable hours (default 09:00 and 14:00 CET/CEST)
-- When the queue grows, additional slots are inserted with a minimum gap
+- Preferred slots: configurable hours (default 09:00, 12:00, 15:00, 18:00 CET/CEST)
+- The preferred hours define the daily publishing grid
 - Scheduling only happens between the configured start/end hours
 - New articles queue up after the last already-scheduled article
 - Checks both local DB AND WordPress future posts to avoid double-booking
@@ -47,7 +47,7 @@ def _preferred_hours() -> list[int]:
     try:
         preferred = [int(h.strip()) for h in settings.pipeline_publish_hours.split(",") if h.strip()]
     except Exception:
-        preferred = [9, 14]
+        preferred = [9, 12, 15, 18]
 
     anchors: list[int] = []
     seen: set[int] = set()

backend/tests/test_scheduler.py

@@ -60,7 +60,7 @@ class TestScheduler(unittest.TestCase):
             return int(cur.lastrowid)
 
     def test_preferred_hours_expand_with_gap_and_window(self) -> None:
-        self.assertEqual(_preferred_hours(), [9, 14, 17])
+        self.assertEqual(_preferred_hours(), [9, 12, 15, 18])
 
     @patch("backend.app.scheduler._today_cet")
     @patch("backend.app.scheduler._fetch_wp_occupied_slots", return_value=set())
@@ -68,7 +68,7 @@ class TestScheduler(unittest.TestCase):
         from datetime import date
 
         mock_today.return_value = date(2026, 7, 24)
-        article_ids = [self._insert_article(idx) for idx in range(1, 5)]
+        article_ids = [self._insert_article(idx) for idx in range(1, 6)]
 
         slots = []
         for article_id in article_ids:
@@ -84,8 +84,9 @@ class TestScheduler(unittest.TestCase):
             slots,
             [
                 "2026-07-25T09:00:00",
-                "2026-07-25T14:00:00",
-                "2026-07-25T17:00:00",
+                "2026-07-25T12:00:00",
+                "2026-07-25T15:00:00",
+                "2026-07-25T18:00:00",
                 "2026-07-26T09:00:00",
             ],
         )