feat: poker session history — browse, delete, and Lyra lookup

Answers three gaps: no way to delete a single poker session (only clear_all),
no way to browse past sessions, and Lyra could only see aggregate stats.

- poker.list_sessions() (per-session summary + hand count + recap flag) and
  poker.delete_session() (removes a session + its hands/reads/observations/
  stacks/rituals; keeps the persistent villain file).
- /history page (date, stakes, venue, net, hours, recap link, per-row delete with
  confirm) + /history/data + DELETE /history/{id}. Nav links from chat + HUD.
- recent_sessions read tool, added to the shared lookups so Lyra can answer
  "how'd my last few sessions go?" in either mode.
- Delete is UI/CLI only — deliberately not a Lyra tool.
- test_modes.py +2 (list/delete, recent_sessions); 44 green.

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

lyra/tools.py

@@ -221,6 +221,27 @@ def _session_stats(args: dict, ctx: dict) -> str:
             f"{st['hands_logged']} hands logged (tags: {tags}).")
 
 
+def _recent_sessions(args: dict, ctx: dict) -> str:
+    try:
+        n = int(args.get("limit") or 8)
+    except (TypeError, ValueError):
+        n = 8
+    rows = poker.list_sessions(limit=n)
+    if not rows:
+        return "No sessions logged yet."
+    out = []
+    for s in rows:
+        net = s.get("net")
+        netstr = (f"{net:+.0f}" if net is not None
+                  else "live" if s.get("status") == "live" else "—")
+        hrs = f", {s['hours']:g}h" if s.get("hours") else ""
+        recap = " · recap" if s.get("has_recap") else ""
+        out.append(f"#{s['id']} {(s.get('started_at') or '')[:10]} "
+                   f"{s.get('stakes') or '?'} {s.get('game') or ''} @ {s.get('venue') or '?'} "
+                   f"— net {netstr}{hrs} ({s.get('hands', 0)} hands){recap}")
+    return "\n".join(out)
+
+
 def _running_stats(args: dict, ctx: dict) -> str:
     rs = poker.running_stats(stakes=args.get("stakes"), venue=args.get("venue"),
                              game=args.get("game"), since=args.get("since"))
@@ -432,6 +453,13 @@ TOOLS.update({
         "confidence-bank entries so far. Use whenever he asks where he's at, what's in "
         "the bank, his stack or net, or if gator mode is on — answer from THIS, not memory.",
         {}, [])},
+    "recent_sessions": {"handler": _recent_sessions, "spec": _f(
+        "recent_sessions",
+        "List Brian's recent poker sessions — date, stakes, venue, net, hours, hand "
+        "count. Use when he asks about past sessions, how recent ones went, or to find "
+        "a session to review. Answer from this, not memory.",
+        {"limit": {**_N, "description": "How many recent sessions (default 8)"}},
+        [])},
     "running_stats": {"handler": _running_stats, "spec": _f(
         "running_stats",
         "Cumulative results across closed sessions (net, $/hr, by stake). Optionally filter.",