fix: reserve and persist background jobs

tests/test_server_reliability.py

@@ -117,3 +117,34 @@ def test_expired_onchain_timestamp_triggers_real_refresh(server, monkeypatch, tm
     assert saved["puell_multiple"]["source"] == "lookintobitcoin"
     assert saved["sopr"]["source"] == "checkonchain"
     assert saved["_onchain_timestamp"] != old.isoformat()
+
+
+def test_refresh_job_is_reserved_before_thread_start(server, monkeypatch, tmp_path):
+    from dashboard.jobs import JobRegistry
+
+    registry = JobRegistry(tmp_path / "jobs.json")
+    monkeypatch.setattr(server, "_jobs", registry, raising=False)
+    monkeypatch.setattr(server, "_scraper_running", False)
+
+    started = server.api_refresh(full=False)
+    duplicate = server.api_refresh(full=False)
+
+    assert started["job_id"]
+    assert started["status"] == "queued"
+    assert registry.get(started["job_id"])["status"] == "queued"
+    assert duplicate.status_code == 409
+
+
+def test_history_collection_has_job_id_and_job_scoped_progress(server, monkeypatch, tmp_path):
+    from dashboard.jobs import JobRegistry
+
+    registry = JobRegistry(tmp_path / "jobs.json")
+    monkeypatch.setattr(server, "_jobs", registry, raising=False)
+
+    started = server.api_backtest_collect()
+    job = registry.get(started["job_id"])
+
+    assert started["status"] == "queued"
+    assert job["kind"] == "history"
+    assert job["progress"] == {"status": "starting", "current": "", "step": 0, "total": 0}
+    assert server.api_job_status(started["job_id"])["id"] == started["job_id"]