Function getTrackingKey

src/services/api/promptCacheBreakDetection.ts:149–158

* Returns the tracking key for a querySource, or null if untracked. * Compact shares the same server-side cache as repl_main_thread * (same cacheSafeParams), so they share tracking state. * * For subagents with a tracked querySource, uses the unique agentId to * isolate tracking state. This pre

(
  querySource: QuerySource,
  agentId?: AgentId,
)

 * logged via tengu_api_success for analytics.
 */
function getTrackingKey(
  querySource: QuerySource,
  agentId?: AgentId,
): string | null {
  if (querySource === 'compact') return 'repl_main_thread'
  for (const prefix of TRACKED_SOURCE_PREFIXES) {
    if (querySource.startsWith(prefix)) return agentId || querySource
  }
  return null
}

function stripCacheControl(
  items: ReadonlyArray<Record<string, unknown>>,