Function buildMissingDataContext

actions/setup/js/handle_agent_failure.cjs:1095–1128

* Build missing_data context string for display in failure issues/comments. * When cache-memory is enabled, a restore matched, and a cache_miss is detected, * appends a configuration-problem warning to the context. * @param {boolean} cacheMemoryEnabled - Whether cache-memory is configured for thi

(cacheMemoryEnabled, cacheMemoryRestored, items)

 * @returns {string} Formatted missing data context
 */
function buildMissingDataContext(cacheMemoryEnabled, cacheMemoryRestored, items) {
  const missingDataMessages = loadMissingDataMessages(items);

  if (missingDataMessages.length === 0) {
    return "";
  }

  core.info(`Found ${missingDataMessages.length} missing_data message(s)`);

  // Detect cache_miss: if cache-memory restore matched and the agent reported a cache miss,
  // this indicates the prompt is referencing an incorrect file path within the cache directory.
  const hasCacheMiss = missingDataMessages.some(m => m.reason === "cache_memory_miss");

  // When cache-memory is configured and cache_miss is present, avoid repeating the same
  // signal in the generic "Missing Data" section. Keep the specialised cache warning below.
  const shouldShowCacheWarning = cacheMemoryEnabled && cacheMemoryRestored && hasCacheMiss;
  const displayableMissingData = shouldShowCacheWarning ? missingDataMessages.filter(m => m.reason !== "cache_memory_miss") : missingDataMessages;

  let context = "";
  if (displayableMissingData.length > 0) {
    const formattedList = formatMissingData(displayableMissingData);
    context += buildWarningAlertLine("Missing Data Reported", "The agent reported missing data during execution.") + "\n**Missing Data:**\n";
    context += formattedList;
    context += "\n\n";
  }

  if (shouldShowCacheWarning) {
    core.info("Cache-miss detected after a successful cache restore — likely a configuration problem");
    const templatePath = getPromptPath("cache_memory_miss.md");
    context += "\n" + renderTemplateFromFile(templatePath, {}) + "\n";
  }

  return context;
}

/**
 * Extract denied command entries from a missing_tool alternatives string.