test(windows-drivers): adapter-init isolated to wdk-sys IddCx binding (Rust IddCx PROVEN to work on-box)

DECISIVE: installed the pre-built UPSTREAM virtual-display-rs (Rust wdf-umdf IddCx)
driver on the SAME box -> Status=OK. So a Rust IddCx driver inits an adapter here,
self-signed, right now. My wdk-sys driver still fails ONLY at IddCxAdapterInitAsync
(0xc000000d) despite matching virtual-display-rs on EVERY inspectable dimension:
- same iddcx 1.10 headers+stub
- IDDCX_ADAPTER_CAPS + IDD_CX_CLIENT_CONFIG byte-perfect (offsets match C header)
- runtime pointers all valid/non-null (names .rdata, version stack, dev handle)
- identical IddFunctions[idx]+IddDriverGlobals dispatch; indices 0/1/2
- matched the minimal link (tested vendored wdk-build WITHOUT OneCoreUAP/
  NODEFAULTLIB/OPT/INTEGRITYCHECK -> still fails; export pollution ruled out)
- device context, no device interface (control via EvtIddCxDeviceIoControl), init order

The IddCx ClassExtension ETW provider emits no decodable reason (WPP/kernel-debugger
only). The remaining difference is the wdk-sys IddCx binding itself, invisible to
inspection. This commit keeps the upstream-matching structure (device context, no
interface) + the on-glass instrumentation; vendored wdk-build reverted to pristine.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packaging/windows/drivers/pf-vdisplay/src/adapter.rs

@@ -148,6 +148,18 @@ pub fn init_adapter(device: WDFDEVICE) -> NTSTATUS {
     attr.SynchronizationScope =
         wdk_sys::_WDF_SYNCHRONIZATION_SCOPE::WdfSynchronizationScopeInheritFromParent;
     attr.ContextTypeInfo = &ADAPTER_CTX.0;
+    dbglog!(
+        "[pf-vd] rt: dev={:#x} pCaps={:#x} model={:#x} mfg={:#x} fwVer={:#x} hwVer={:#x} verSizeOf={} verSet={} diagSet={}",
+        device as usize,
+        (&raw const caps) as usize,
+        caps.EndPointDiagnostics.pEndPointModelName as usize,
+        caps.EndPointDiagnostics.pEndPointManufacturerName as usize,
+        caps.EndPointDiagnostics.pFirmwareVersion as usize,
+        caps.EndPointDiagnostics.pHardwareVersion as usize,
+        core::mem::size_of::<iddcx::IDDCX_ENDPOINT_VERSION>(),
+        version.Size,
+        caps.EndPointDiagnostics.Size,
+    );
     let init = iddcx::IDARG_IN_ADAPTER_INIT {
         WdfDevice: device,
         pCaps: &raw mut caps,