feat: import reproducible timing validation

tests/test_timing_precision_contract.py

@@ -0,0 +1,50 @@
+from scripts.timing_precision_contract import build_timing_precision_contract
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_timing_contract_preserves_dates_but_caps_claim_status() -> None:
+    contract = build_timing_precision_contract({
+        "verified_window": "2026-08 to 2026-10",
+        "candidate_windows": [{
+            "start": "2026-08-12", "end": "2026-08-16", "rank": 1,
+            "signals": ["Vimshottari", "Narayana", "D10", "transit"],
+            "confidence_cap": "low",
+        }],
+        "exact_triggers": [{"at": "2026-08-14T09:30:00Z", "technique": "exact_transit"}],
+    })
+
+    assert contract["timing_precision"] == "candidate_day_window"
+    assert contract["claim_status"] == "exploratory_unvalidated"
+    assert contract["verified_window"] == "2026-08 to 2026-10"
+    assert contract["candidate_windows"][0]["start"] == "2026-08-12"
+    assert contract["exact_triggers"][0]["at"] == "2026-08-14T09:30:00Z"
+    assert contract["promotion_gate"]["status"] == "blocked"
+
+
+def test_empty_timing_contract_still_exposes_boundary() -> None:
+    contract = build_timing_precision_contract()
+    assert contract["timing_precision"] == "broad_window_only"
+    assert contract["candidate_windows"] == []
+    assert "不能作为确定事件承诺" in contract["boundary"]
+
+
+def test_predict_cli_exposes_exploratory_timing_contract() -> None:
+    completed = subprocess.run(
+        [sys.executable, "scripts/jyotish_engine.py", "predict", "--chart", '{"planets":{}}',
+         "--lat", "0", "--lon", "0", "--tz", "0"],
+        cwd=ROOT, text=True, capture_output=True, timeout=30, check=False,
+    )
+    assert completed.returncode == 0, completed.stderr
+    contract = json.loads(completed.stdout)["timing_precision_contract"]
+    assert contract["claim_status"] == "exploratory_unvalidated"
+    assert contract["promotion_gate"]["current_negative_controls_reusable_for_tuning"] is False
+
+
+def test_consultation_api_attaches_same_contract() -> None:
+    source = (ROOT / "scripts/jyotish_api_server.py").read_text(encoding="utf-8")
+    assert source.count("result['timing_precision_contract'] = build_timing_precision_contract") == 2