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deft-directive-debug
Systematic, evidence-based root-cause investigation. Use when the user asks "why did X break / slow down / regress?", wants to debug a failure, run a forensic investigation, or find the root cause of a bug -- to enter a sustained investigation MODE with a claim ledger, mandatory falsification before any conclusion, a chat answer-embargo until evidence closes, and a deterministic validator gate. Triggers: "debug", "root cause", "investigate", "why did X break", "why is X slow", "systematic debugging", "forensic".
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