feat: direct REST endpoints for stack/buyin/start-session (no LLM)

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

@@ -0,0 +1,52 @@
+from __future__ import annotations
+
+import importlib
+
+import pytest
+
+
+@pytest.fixture
+def client(tmp_path, monkeypatch):
+    monkeypatch.setenv("LYRA_DB_PATH", str(tmp_path / "test.db"))
+    from lyra import llm
+    monkeypatch.setattr(llm, "embed", lambda texts: [[0.1, 0.2, 0.3] for _ in texts])
+    import lyra.memory as memory
+    importlib.reload(memory)
+    import lyra.poker as poker
+    importlib.reload(poker)
+    import lyra.web.server as server
+    importlib.reload(server)
+    from fastapi.testclient import TestClient
+    return TestClient(server.app), poker
+
+
+def test_post_stack_logs_and_returns_state(client):
+    c, poker = client
+    poker.start_session(venue="Meadows", stakes="1/3", buy_in=400)
+    r = c.post("/session/stack", json={"amount": 373})
+    assert r.status_code == 200
+    body = r.json()
+    assert body["ok"] is True
+    assert body["stack"]["current"] == 373
+    assert body["stack"]["net"] == pytest.approx(-27)
+
+
+def test_post_stack_without_session_errors(client):
+    c, _ = client
+    r = c.post("/session/stack", json={"amount": 373})
+    assert r.json()["ok"] is False
+    assert "error" in r.json()
+
+
+def test_post_buyin_increments_total(client):
+    c, poker = client
+    poker.start_session(buy_in=400)
+    r = c.post("/session/buyin", json={"amount": 200})
+    assert r.json()["buy_in_total"] == pytest.approx(600)
+
+
+def test_post_session_starts_live(client):
+    c, poker = client
+    r = c.post("/session", json={"venue": "Wheeling", "stakes": "1/3", "buy_in": 400})
+    sid = r.json()["id"]
+    assert poker.live_session()["id"] == sid