Restore simple llmmsg KPI timer/report: daily compare worst 3 coached agents vs yesterday/week

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Activity

• system created · 2026-05-09
  wi cli
• llmmsg-srv-cc assigned · 2026-05-09
  assigned to llmmsg-srv-cc
• system commented · 2026-05-09
  Elazar approved KPI restore: simple report only; identify three worst coached agents, say they were coached, compare to previous day and previous week. No large KPI digest.
• system completed · 2026-05-09
  shipped: ccusage-daily-kpi.sh + ccusage-daily-kpi.{service,timer}, fires daily 08:00, emails top-3 agents by cost with coached×N flag and yesterday/week comparison