diff --git a/fifa17-recon/docker/fifa17-python/tools/test_hub_offline_season_contract.py b/fifa17-recon/docker/fifa17-python/tools/test_hub_offline_season_contract.py
new file mode 100644
index 0000000..548ae58
--- /dev/null
+++ b/fifa17-recon/docker/fifa17-python/tools/test_hub_offline_season_contract.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+"""Regression for the FIFA 17 FUT hub offline-Seasons summary.
+
+CardsDLL's hub parser at 0x180139610 recognizes offlineSeason (atom 0x1ec)
+and passes its object to 0x18013c3a0. That nested parser recognizes the
+string-valued divisionId, gamesPlayed, points, totalGames, and
+progressDataVersion fields. Without offlineSeason, the Single Player Season
+UI rejects the otherwise-successful GetHubData response before /season is sent.
+"""
+import os
+import pathlib
+import sys
+import tempfile
+
+TOOLS = pathlib.Path(__file__).resolve().parent
+sys.path.insert(0, str(TOOLS))
+
+
+def main():
+    with tempfile.TemporaryDirectory(prefix="openfut-hub-season-test-") as state:
+        os.environ["FUT_PROFILE_ROOT"] = os.path.join(state, "accounts")
+        os.environ.pop("FUT_PROFILE", None)
+        os.environ["FUT_MODES"] = "1"
+
+        import utas_server
+
+        body = utas_server.hub_data()
+        assert isinstance(body, dict), "hub response root must be an object"
+        summary = body.get("offlineSeason")
+        assert isinstance(summary, dict), "hub.offlineSeason must be an object"
+
+        expected = {"divisionId", "gamesPlayed", "points", "totalGames",
+                    "progressDataVersion"}
+        assert set(summary) == expected, repr(summary)
+        for key in expected:
+            assert isinstance(summary[key], str), "%s must be a string: %r" % (key, summary[key])
+
+        assert summary["divisionId"] == "10", repr(summary)
+        assert summary["gamesPlayed"] == "0", repr(summary)
+        assert summary["points"] == "0", repr(summary)
+
+
+if __name__ == "__main__":
+    main()
+    print("PASS: FUT hub includes the recovered offline-Seasons summary")
diff --git a/fifa17-recon/docker/fifa17-python/tools/utas_server.py b/fifa17-recon/docker/fifa17-python/tools/utas_server.py
index 4d81026..9140588 100755
--- a/fifa17-recon/docker/fifa17-python/tools/utas_server.py
+++ b/fifa17-recon/docker/fifa17-python/tools/utas_server.py
@@ -1449,8 +1449,23 @@ def hub_data():
     players = len([i for i in STORE.items() if _is_player(i)])
     auctions = len(STORE.listings())
     log("    HUB: clubPlayers=%d auctionCount=%d selling=%d" % (players, auctions, auctions))
-    return {"clubPlayers": players, "auctionCount": auctions,
+    body = {"clubPlayers": players, "auctionCount": auctions,
             "tradePile": {"count": auctions, "selling": auctions, "sold": 0}}
+    if _MODES:
+        # GetHubData's parser 0x180139610 recognises offlineSeason (atom 0x1ec)
+        # and passes it to 0x18013c3a0. The nested scalar fields are STRING
+        # getters, despite representing numbers. Omitting the object leaves the
+        # offline-season summary invalid and the UI aborts before requesting
+        # /season. The initial division matches season_list()/season_user(); the
+        # ten-game length is a live-test hypothesis, isolated behind FUT_MODES.
+        body["offlineSeason"] = {
+            "divisionId": "10",
+            "gamesPlayed": "0",
+            "points": "0",
+            "totalGames": "10",
+            "progressDataVersion": "0",
+        }
+    return body
 
 
 # ---- club stats: the CLUB STATS panel, and probably the MY CLUB tile too ------
diff --git a/fifa17-recon/docs/BASELINE-python-2026-08-10.md b/fifa17-recon/docs/BASELINE-python-2026-08-10.md
index ed12743..1d98399 100644
--- a/fifa17-recon/docs/BASELINE-python-2026-08-10.md
+++ b/fifa17-recon/docs/BASELINE-python-2026-08-10.md
@@ -97,3 +97,25 @@ docker compose up -d --build
   location.
 - TURN/relay re-addressing (multiplayer) and long-tail endpoints (weather,
   matchday, kit assets) are deferred feature gaps — tracked separately.
+
+## Running state vs image — what the frozen image does NOT contain
+
+The baseline image (`python-baseline-2026-08-10` / `dev`) was built at 02:14Z,
+but the container's `/app` was hot-patched afterwards:
+
+* `tools/utas_server.py` — gained the `FUT_MODES`-gated `offlineSeason` block in
+  GetHubData's club response (keeps the hub's offline-season summary valid).
+* `tools/test_hub_offline_season_contract.py` — added to `/app/tools`.
+
+`docker save` captures the image, not the container's writable layer, so the
+baseline tar.gz lacks those two changes. Two paths cover the exact runtime:
+
+* `openfut-fut-backend:python-running-2026-08-10` — `docker commit` of the
+  running container (sha256:093a98fa0496...), the exact runtime FS.
+* The committed `fifa17-python/tools` + `data` — synced to match the running
+  container byte-for-byte (237 files verified, incl. the redir cert pair), so a
+  fresh build reproduces the actual running backend. Proven by rebuilding from
+  the committed sources and diffing the baked `/app/SHA256SUMS.txt` against the
+  container manifest: identical.
+
+Archive: `docker-backups/openfut-fut-backend-python-running-2026-08-10.tar.gz`.