Function executePreCompactHooks

src/utils/hooks.ts:4120–4184

(
  compactData: {
    trigger: 'manual' | 'auto'
    customInstructions: string | null
  },
  signal?: AbortSignal,
  timeoutMs: number = TOOL_HOOK_EXECUTION_TIMEOUT_MS,
)

 * @returns Object with optional newCustomInstructions and userDisplayMessage
 */
export async function executePreCompactHooks(
  compactData: {
    trigger: 'manual' | 'auto'
    customInstructions: string | null
  },
  signal?: AbortSignal,
  timeoutMs: number = TOOL_HOOK_EXECUTION_TIMEOUT_MS,
): Promise<{
  newCustomInstructions?: string
  userDisplayMessage?: string
}> {
  const hookInput: PreCompactHookInput = {
    ...createBaseHookInput(undefined),
    hook_event_name: 'PreCompact',
    trigger: compactData.trigger,
    custom_instructions: compactData.customInstructions,
  }

  const results = await executeHooksOutsideREPL({
    hookInput,
    matchQuery: compactData.trigger,
    signal,
    timeoutMs,
  })

  if (results.length === 0) {
    return {}
  }

  // Extract custom instructions from successful hooks with non-empty output
  const successfulOutputs = results
    .filter(result => result.succeeded && result.output.trim().length > 0)
    .map(result => result.output.trim())

  // Build user display messages with command info
  const displayMessages: string[] = []
  for (const result of results) {
    if (result.succeeded) {
      if (result.output.trim()) {
        displayMessages.push(
          `PreCompact [${result.command}] completed successfully: ${result.output.trim()}`,
        )
      } else {
        displayMessages.push(
          `PreCompact [${result.command}] completed successfully`,
        )
      }
    } else {
      if (result.output.trim()) {
        displayMessages.push(
          `PreCompact [${result.command}] failed: ${result.output.trim()}`,
        )
      } else {
        displayMessages.push(`PreCompact [${result.command}] failed`)
      }
    }
  }