feat: poker phase 2 — session recap (.md) generation, export, hands browser

Completes the poker copilot loop: talk through a session -> structured capture
-> generated writeup in Brian's format, remembered + exportable.

- poker.generate_recap(): LLM produces Brian's .md log (Session Header, Money
  Flow, Overview, Timeline, Key Hands w/ assessments, Villain Notes, Confidence
  Bank, Scar Notes, Mental Game, Final Assessment) from the session's structured
  data + the linked chat conversation; stored on poker_sessions.recap_md
- sessions now capture chat_session_id (via tool ctx) to pull the right convo;
  list_recent_hands() for browsing
- generate_recap tool ("write up the recap")
- web: /recap/{id} (renders the md) + /recap/{id}/download (.md attachment) +
  /hands browser (recent hands -> /hand/{id}); nav links added (desktop + mobile)
- tests: recap generation (stubbed), recent-hands listing

Verified live: recap for the Meadows session rendered + downloaded; all pages 200.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/test_poker.py

@@ -95,6 +95,27 @@ def test_record_hand_tool_parses_and_stores(lyra, monkeypatch):
     assert h["result"] == -300
 
 
+def test_generate_recap(lyra, monkeypatch):
+    poker = lyra
+    from lyra import llm
+    monkeypatch.setattr(llm, "complete",
+                        lambda messages, backend=None, model=None: "# Recap\n## Final Assessment\nGood session.")
+    sid = poker.start_session(venue="Meadows", stakes="1/3", buy_in=300)
+    poker.log_hand(position="BTN", hole_cards="AKs", result=180, tag="confidence")
+    poker.end_session(540, session_id=sid)
+    out = poker.generate_recap(session_id=sid)
+    assert out["id"] == sid and "Final Assessment" in out["markdown"]
+    assert "Recap" in poker.get_session(sid)["recap_md"]
+
+
+def test_list_recent_hands(lyra):
+    poker = lyra
+    poker.start_session(stakes="1/3", buy_in=300)
+    poker.log_hand(position="CO", hole_cards="QQ", result=-50)
+    hh = poker.list_recent_hands()
+    assert hh and hh[0]["hole_cards"] == "QQ" and hh[0]["stakes"] == "1/3"
+
+
 def test_poker_tools_dispatch(lyra):
     from lyra import tools
     assert "started" in tools.dispatch("start_session", {"stakes": "1/3", "buy_in": 300})