Deliberate kill-switch mismatch (non-functional README opt-out)

Wave 3 README advertises EMCD_VUE_8D440FE1_NO_TEL=1 as the telemetry opt-out env var. The postinstall code checks EMCD_VUE_NO_TELEMETRY. These differ; setting the README variable does nothing. Developers who follow the documented opt-out are still exfiltrated. The hex fragment 8D440FE1 in the README var name indicates deliberate construction. Extends the campaign's README social engineering pattern (fake telemetry disclosure) with an additional deception layer.