Add headless runtime tooling and Campaign.win analysis

fixtures/runtime/minimal-world-step-smoke.json

@@ -0,0 +1,54 @@
+{
+  "format_version": 1,
+  "fixture_id": "minimal-world-step-smoke",
+  "source": {
+    "kind": "synthetic",
+    "description": "Synthetic milestone 0/1 smoke fixture for headless runtime parsing and stepping."
+  },
+  "state": {
+    "calendar": {
+      "year": 1830,
+      "month_slot": 0,
+      "phase_slot": 0,
+      "tick_slot": 0
+    },
+    "world_flags": {
+      "sandbox": false
+    },
+    "companies": [
+      {
+        "company_id": 1,
+        "current_cash": 250000,
+        "debt": 0
+      }
+    ],
+    "event_runtime_records": []
+  },
+  "commands": [
+    {
+      "kind": "advance_to",
+      "calendar": {
+        "year": 1830,
+        "month_slot": 0,
+        "phase_slot": 0,
+        "tick_slot": 2
+      }
+    },
+    {
+      "kind": "step_count",
+      "steps": 3
+    }
+  ],
+  "expected_summary": {
+    "calendar": {
+      "year": 1830,
+      "month_slot": 0,
+      "phase_slot": 0,
+      "tick_slot": 5
+    },
+    "world_flag_count": 1,
+    "company_count": 1,
+    "event_runtime_record_count": 0,
+    "total_company_cash": 250000
+  }
+}