Implement fin-hub T24-T26: ingest, runway, coupling, RaaS packaging

Add CSV importers, runway calculator, budget alerts, cross-hub coupling
emitters, finhub CLI, and raas-mvp-packaging docs with full test coverage.

tests/test_ingest.py

@@ -0,0 +1,28 @@
+from pathlib import Path
+
+from fin_hub.ingest.anthropic import parse_anthropic_billing_csv
+from fin_hub.ingest.cloud import parse_cloud_cost_csv
+from fin_hub.ingest.hosteurope import parse_hosteurope_csv
+
+FIXTURES = Path(__file__).parent / "fixtures"
+
+
+def test_parse_cloud_cost_csv():
+    rows = parse_cloud_cost_csv(FIXTURES / "cloud-costs.csv")
+    assert len(rows) == 3
+    assert rows[0].service == "state-hub"
+    assert rows[0].amount == 42.5
+
+
+def test_parse_anthropic_billing_csv():
+    rows = parse_anthropic_billing_csv(FIXTURES / "anthropic-billing.csv")
+    assert len(rows) == 2
+    assert rows[0].provider == "anthropic"
+    assert rows[0].tokens_in == 12000
+
+
+def test_parse_hosteurope_csv():
+    rows = parse_hosteurope_csv(FIXTURES / "hosteurope.csv")
+    assert len(rows) == 2
+    assert rows[0].service_id == "dedicated-server-m"
+    assert rows[0].period_month == "2026-06"