Api V2 Scorecard Daily Get

One trading day's aggregate of the engine's output.

Combines three reads — persisted Action Cards, per-signal flip events with realized return at horizon_minutes, and the closing MSI regime — into a single payload sized for the public /scorecard/{date} page and the auto-tweet job.

Params:

• date — YYYY-MM-DD; defaults to today in America/New_York.
• symbol — underlying (default SPY).
• horizon_minutes — forward window for realized_return (5–240, default 60). The forward price is bounded to the same regular session: a flip within this many minutes of the close counts in flips but not in scored, and contributes nothing to avg_directional_return. Grading it against an after-hours print (or, on a Friday, the next Monday's open) is what made eod_pressure — which can only fire in the last 90 minutes — report a meaningless number for every session.

Returns:

{
  "date": "2026-06-29",
  "symbol": "SPY",
  "tz": "America/New_York",
  "horizon_minutes": 60,
  "cards": {
    "total": 12,
    "by_action": [{"action": "SELL_CALL_SPREAD", "count": 4}, ...],
    "first_card_id": 4221,
    "first_card_permalink": "/cards/4221",
    "items": [
      {"id": 4221, "timestamp": "2026-06-29T13:42:00+00:00",
       "pattern": "call_wall_fade", "action": "SELL_CALL_SPREAD",
       "tier": "0DTE", "direction": "bearish", "confidence": 0.68,
       "permalink": "/cards/4221"},
      ...
    ]
  },
  "signals": {
    "events": [{"name": "...", "flips": 3, "wins": 2, "losses": 1,
                 "avg_directional_return": 0.0042}, ...],
    "best":  {"name": "squeeze_setup",     "avg_directional_return": 0.0074, "wins": 2, "losses": 1, "flips": 3},
    "worst": {"name": "vanna_charm_flow",  "avg_directional_return": -0.0031, "wins": 1, "losses": 2, "flips": 3}
  },
  "regime": {"timestamp": "...", "composite_score": -0.28, "label": "short gamma"},
  "tweet_text": "SPY · 2026-06-29 — 12 Playbook calls. Best: Squeeze Setup +0.74%. Worst: Vanna Charm Flow −0.31%. Regime: short gamma. https://zerogex.io/scorecard/2026-06-29",
  "is_empty": false
}

tweet_text is the canonical one-line summary the auto-tweet job uses verbatim; computing it server-side keeps wording consistent across the OG card, the page header, and the X/Discord tweet.

Returns is_empty: true with zeroed sections when no cards were emitted and no flip events occurred (typical for non-trading days or pre-launch dates).