{
  "context": "Tests whether the agent correctly implements client-side auction features including PubNub SDK initialization with reconnection settings, Presence for watcher counts, local countdown interpolation between server ticks, bid submission retry logic, bid history retrieval, and channel cleanup.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "SDK restore setting",
      "description": "PubNub SDK initialization includes restore: true for automatic reconnection and catching up on missed messages",
      "max_score": 10
    },
    {
      "name": "Retry policy configuration",
      "description": "PubNub SDK initialization includes a retry configuration using LinearRetryPolicy (or equivalent retry policy)",
      "max_score": 10
    },
    {
      "name": "Presence subscription",
      "description": "Subscribes to auction channels with withPresence: true to track active bidder/watcher count",
      "max_score": 10
    },
    {
      "name": "Local countdown interpolation",
      "description": "Implements client-side countdown that interpolates locally between server tick updates (updating display more frequently than server broadcasts, e.g., every 250ms)",
      "max_score": 10
    },
    {
      "name": "Server time correction",
      "description": "When a new server countdown message arrives, updates the local reference values (server remaining time and last update timestamp) to correct drift",
      "max_score": 10
    },
    {
      "name": "Bid retry with backoff",
      "description": "Implements bid submission retry logic with increasing delay between attempts (exponential or linear backoff)",
      "max_score": 10
    },
    {
      "name": "Max retry limit",
      "description": "Limits the number of bid submission retry attempts (e.g., maxRetries parameter)",
      "max_score": 5
    },
    {
      "name": "Bid history fetch",
      "description": "Uses pubnub.fetchMessages() to retrieve historical bids from an auction channel",
      "max_score": 10
    },
    {
      "name": "Channel cleanup",
      "description": "Implements cleanup logic that unsubscribes from auction channels when the user leaves (e.g., on component unmount or page navigation)",
      "max_score": 10
    },
    {
      "name": "SDK userId",
      "description": "PubNub SDK initialization includes a userId parameter",
      "max_score": 5
    },
    {
      "name": "Structured error handling",
      "description": "Distinguishes between different bid rejection reasons (e.g., too low, auction ended, already winning) and provides appropriate user feedback for each",
      "max_score": 10
    }
  ]
}