add secondary progression and solar arc evidence

tests/test_western_chart_engine.py

@@ -80,7 +80,12 @@ def test_workflow_adds_only_explicit_western_timing_layers() -> None:
     packet = _western_evidence_packet_from_body(
         {
             "entry_mode": "direct_chart",
-            "western_timing": {"transit_date": "2026-07-09", "solar_return_year": 2026},
+            "western_timing": {
+                "transit_date": "2026-07-09",
+                "solar_return_year": 2026,
+                "secondary_progression_date": "2026-07-09",
+                "solar_arc_date": "2026-07-09",
+            },
         },
         {"primary_theme": "career"},
         birth_payload={
@@ -89,7 +94,9 @@ def test_workflow_adds_only_explicit_western_timing_layers() -> None:
         },
     )
 
-    assert set(packet["timing_techniques"]) == {"transits", "solar_return"}
+    assert set(packet["timing_techniques"]) == {
+        "transits", "solar_return", "secondary_progressions", "solar_arc_directions",
+    }
     assert packet["sections"]["timing_techniques"]["status"] == "used"
 
 

tests/test_western_timing_engine.py

@@ -4,6 +4,8 @@ from __future__ import annotations
 
 from scripts.western_timing_engine import (
     build_timing_techniques,
+    calculate_secondary_progressions,
+    calculate_solar_arc_directions,
     calculate_solar_return,
     calculate_transit_to_natal,
 )
@@ -37,3 +39,21 @@ def test_timing_builder_only_contains_requested_techniques() -> None:
     timing = build_timing_techniques(**_BIRTH, transit_date="2026-07-09", solar_return_year=2026)
 
     assert set(timing) == {"transits", "solar_return"}
+
+
+def test_secondary_progressions_use_declared_day_for_year_contract() -> None:
+    progressions = calculate_secondary_progressions(**_BIRTH, target_date="2026-07-09")
+
+    assert progressions["technique"] == "secondary_progressions"
+    assert progressions["method"] == "one_ephemeris_day_per_tropical_year"
+    assert progressions["progressed_planets"]["sun"]["longitude"] != progressions["natal_sun_longitude"]
+    assert progressions["aspects"]
+
+
+def test_solar_arc_uses_secondary_progressed_sun_arc() -> None:
+    directions = calculate_solar_arc_directions(**_BIRTH, target_date="2026-07-09")
+
+    assert directions["technique"] == "solar_arc_directions"
+    assert directions["method"] == "secondary_progressed_sun_arc"
+    assert 0 < directions["solar_arc_degrees"] < 40
+    assert directions["directed_points"]["sun"]["longitude"] != directions["natal_sun_longitude"]