Function runPostCompactCleanup

src/services/compact/postCompactCleanup.ts:31–77

(querySource?: QuerySource)

 * genuinely main-thread-only (/compact, /clear).
 */
export function runPostCompactCleanup(querySource?: QuerySource): void {
  // Subagents (agent:*) run in the same process and share module-level
  // state with the main thread. Only reset main-thread module-level state
  // (context-collapse, memory file cache) for main-thread compacts.
  // Same startsWith pattern as isMainThread (index.ts:188).
  const isMainThreadCompact =
    querySource === undefined ||
    querySource.startsWith('repl_main_thread') ||
    querySource === 'sdk'

  resetMicrocompactState()
  if (feature('CONTEXT_COLLAPSE')) {
    if (isMainThreadCompact) {
      /* eslint-disable @typescript-eslint/no-require-imports */
      ;(
        require('../contextCollapse/index.js') as typeof import('../contextCollapse/index.js')
      ).resetContextCollapse()
      /* eslint-enable @typescript-eslint/no-require-imports */
    }
  }
  if (isMainThreadCompact) {
    // getUserContext is a memoized outer layer wrapping getClaudeMds() →
    // getMemoryFiles(). If only the inner getMemoryFiles cache is cleared,
    // the next turn hits the getUserContext cache and never reaches
    // getMemoryFiles(), so the armed InstructionsLoaded hook never fires.
    // Manual /compact already clears this explicitly at its call sites;
    // auto-compact and reactive-compact did not — this centralizes the
    // clear so all compaction paths behave consistently.
    getUserContext.cache.clear?.()
    resetGetMemoryFilesCache('compact')
  }
  clearSystemPromptSections()
  clearClassifierApprovals()
  clearSpeculativeChecks()
  // Intentionally NOT calling resetSentSkillNames(): re-injecting the full
  // skill_listing (~4K tokens) post-compact is pure cache_creation. The
  // model still has SkillTool in schema, invoked_skills preserves used
  // skills, and dynamic additions are handled by skillChangeDetector /
  // cacheUtils resets. See compactConversation() for full rationale.
  clearBetaTracingState()
  if (feature('COMMIT_ATTRIBUTION')) {
    void import('../../utils/attributionHooks.js').then(m =>
      m.sweepFileContentCache(),
    )
  }
  clearSessionMessagesCache()
}