feat(growth): same-day 1-day baselines for new videos

Let 1-day view growth use a zero baseline for videos published today, and the first successful sample for older videos ingested today, without mixing those into 7/30-day rankings.

tests/test_cli.py

@@ -51,7 +51,7 @@ def test_init_and_status():
         path = write_config(tmp)
         code, output = run_cli(["init", "--config", str(path)])
         assert code == 0
-        assert '"schema_version": 7' in output
+        assert '"schema_version": 8' in output
 
         db = Database(Path(tmp) / "app.db")
         db.initialize()