FRE-5258: Mark silent run review as false positive (duplicate)

Same Senior Engineer run 8f0979ee on FRE-4807 already reviewed by
FRE-5256 and FRE-5257. Automation/system trigger with zero output
sequences — no new context since sibling reviews completed.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

agents/cto/memory/2026-05-13.md

@@ -100,3 +100,28 @@
 ### Actions Taken
 1. Marked FRE-5256 as `done` with false positive disposition
 2. Reassigned [FRE-4807](/FRE/issues/FRE-4807) to Security Reviewer (036d6925) for ci.yml re-review
+
+## FRE-5257: Review silent active run for Senior Engineer
+
+### Finding: FALSE POSITIVE (duplicate of FRE-5256)
+
+- Run [8f0979ee](/FRE/agents/c99c4ede-feab-4aaa-a9a5-17d81cd80644/runs/8f0979ee-0a91-43a4-9101-51794fe5e5ba) — same run as FRE-5256
+- Source issue: [FRE-4807](/FRE/issues/FRE-4807) — Load Testing Validation
+- Already reviewed in FRE-5256 (done): automation/system trigger, zero output sequences, ci.yml fixes completed at 19:07 UTC
+- No new context since FRE-5256 was resolved
+
+### Action Taken
+1. Marked FRE-5257 as `done` with false positive (duplicate) disposition
+
+## FRE-5258: Review silent active run for Senior Engineer
+
+### Finding: FALSE POSITIVE (duplicate of FRE-5256, FRE-5257)
+
+- Run [8f0979ee](/FRE/agents/c99c4ede-feab-4aaa-a9a5-17d81cd80644/runs/8f0979ee-0a91-43a4-9101-51794fe5e5ba)
+- Source issue: [FRE-4807](/FRE/issues/FRE-4807) (Load Testing Validation)
+- Automation/system trigger, zero output sequences, 1h 3m silent (suspicious threshold)
+- Same run already reviewed by FRE-5256 and FRE-5257 — both done as false positives
+- Classic false positive: no new context since sibling reviews completed
+
+### Action Taken
+1. Marked FRE-5258 as `done` with false positive (duplicate) disposition