docs(dream-cycle): append 2026-09-05 ledger row

Co-Authored-By: RuFlo <ruv@ruv.net>
Claude-Session: https://claude.ai/code/session_01YQUz3bkMpqgtLXgkYa1LFF

Author: claude

docs/dream-cycle/LEDGER.md

@@ -170,3 +170,4 @@ as a first-class, high-priority candidate, not a background note.
 | 2026-09-01 | security | maxToolCallsPerTurn was a session-lifetime cumulative cap that never reset — sliding-window reset implemented | #3151 | #3152 | yes | ACCEPT | see issue #3151 | n/a (backfill) | unmerged draft as of 09-05 |
 | 2026-09-02 | intelligence | LearningBridge.consolidate() was reward-blind — fixed to weight consolidation by trajectory reward | #3159 | #3160 | yes | ACCEPT | see issue #3159 | n/a (backfill) | unmerged draft as of 09-05 |
 | 2026-09-03 | memory | SmartRetrieval's MMR diversity step used token-Jaccard similarity instead of the available embedding-cosine | #3168 | #3169 | yes | ACCEPT | see issue #3168 | n/a (backfill) | unmerged draft as of 09-05 |
+| 2026-09-05 | performance | cli-cold-start.bench.ts's real measureColdStart() was dead code; every number (incl. a by-construction "5.00x V2 vs V3") came from setTimeout(); real spawn-based measurement wired in, fabricated comparison removed, 2 stale ADR-STATUS-SUMMARY.md rows corrected | #3183 | #3184 | yes | ACCEPT-scoped | real: 54.65ms mean (min 51.94/max 57.92, n=5) vs 500ms target; 99/99 tests (+4 new), baseline-fails/candidate-passes via stash isolation | 04f903ba... | 08-24..08-31 all unmerged drafts (ACCEPT/ACCEPT-scoped, correctly awaiting human review, none stale <14d) |