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+# Phase 5 Progress
+
+- 実装: Internal Tool 5群、strict schema/validator、deny-by-default dispatcher、ToolUseGuard、同一失敗5回、外部効果証拠。
+- Phase 5 backendはfake、Phase 6以降はWindows backendへ差し替え。
+- 自動検証: malformed/unknown field、policy deny、effect evidence、failure limitを確認。
+- Gate G5: PASS。