cost-guard

Instructions:

• Run: powershell -ExecutionPolicy Bypass -File .codex/skills/cost-guard/scripts/run.ps1
• Input: data/invoice_lines.csv, data/standard_rates.csv
• Output: reports/cost_guard.md Fail-safe:
• If inputs/columns missing, output only the '以묐떒' table in reports/cost_guard.md and exit. Evidence Required:
• PASS/WARN/HIGH/CRITICAL tiers per line; MISSING_STD supported