feat: hands API — log_hand endpoint, update_hand store fn, edit/delete routes

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G796GsLCvJQKVN7hwV2cDx

tests/test_poker_api.py

@@ -50,3 +50,17 @@ def test_post_session_starts_live(client):
     r = c.post("/session", json={"venue": "Wheeling", "stakes": "1/3", "buy_in": 400})
     sid = r.json()["id"]
     assert poker.live_session()["id"] == sid
+
+
+def test_post_hand_edit_and_delete(client):
+    c, poker = client
+    poker.start_session(buy_in=400)
+    r = c.post("/session/hand", json={"position": "BTN", "hole_cards": "22", "result": 120})
+    assert r.json()["ok"] is True
+    hid = r.json()["id"]
+    r2 = c.patch(f"/hand/{hid}", json={"hole_cards": "2c2d"})
+    assert r2.json()["ok"] is True
+    assert r2.json()["hand"]["hole_cards"] == "2c2d"
+    r3 = c.delete(f"/hand/{hid}")
+    assert r3.json()["ok"] is True
+    assert poker.get_hand(hid) is None