fix(examples): follow the farms to 2026.09.11

`compat:vulkan-runtime` and `compat:opencl-runtime` no longer carry
`libnvidia-pkcs11*` -- a PKCS#11 token module the vendor name pattern swept in
and that no GPU driver's dispatch reaches -- and the chain that delivers them
took new versions so an installed copy stops recording the old pin.

Measured on this host with the driver, both examples rebuilt from an empty
target directory:

    sycl    members 49, walked 49, findings none
    vulkan  members 56, walked 56, findings none

and both compute `12 24 36 48` on an RTX 4080.

Follows mcpplibs/mcpp-index#383.

Author: speak-agent

examples/09-heterogeneous/multi-backend/mcpp.toml

@@ -104,7 +104,7 @@ cuda-driver = "2026.09.05"
 # is a payload and the hardware ones are the host's.
 [target.'cfg(accelerator = "vulkan")'.dependencies.compat]
 vulkan         = "1.4.357.0"
-vulkan-runtime = "2026.09.10"
+vulkan-runtime = "2026.09.11"
 
 [build]
 # The device sources carry the accel they are for. A CONSTRAINED glob gates

examples/09-heterogeneous/sycl/app/mcpp.toml

@@ -37,7 +37,7 @@ plugins = { version = "0.5.2", features = ["rules-sycl", "tools-island"], host-m
 # message (#596). The farm now mirrors what the driver sentinel publishes
 # rather than naming a file.
 [dependencies.compat]
-sycl-runtime = "2026.09.10"
+sycl-runtime = "2026.09.11"
 
 # NO [xlings.workspace]. `mcpp.rules.sycl` declares all five payloads this lane
 # needs, each closing one hole the host would otherwise fill: `dpcpp` (the

examples/09-heterogeneous/vulkan/app/mcpp.toml

@@ -22,7 +22,7 @@ plugins = { version = "0.5.2", features = ["rules-spirv"], host-module = true }
 # below is a payload and the hardware ones are the host's.
 [dependencies.compat]
 vulkan         = "1.4.357.0"
-vulkan-runtime = "2026.09.10"
+vulkan-runtime = "2026.09.11"
 
 # ONE payload here, and the shader compiler is not it: `mcpp.rules.spirv`
 # declares `xim:glslang` for itself. What stays is a DEVICE, and the boundary is

examples/10-graphics/offscreen/mcpp.toml

@@ -28,14 +28,14 @@ plugins = { version = "0.5.2", features = ["rules-spirv"], host-module = true }
 # seam work: the CPU leg below is selected by the accelerator, and only the
 # packages are unconditional.
 [dependencies.compat]
-vulkan = "1.4.357.1"
+vulkan = "1.4.357.2"
 
 # The adapter that makes the host's own ICDs reachable from a binary running
 # under mcpp's private loader. An OS predicate, which IS allowed, and a Linux
 # concern by construction: macOS resolves through dyld and Windows through the
 # PE loader, and neither has a private loader to work around.
 [target.'cfg(linux)'.dependencies.compat]
-vulkan-runtime = "2026.09.10"
+vulkan-runtime = "2026.09.11"
 
 # A Vulkan device that needs no GPU, so this example runs on a machine that has
 # none. It is a DEVICE and therefore a payload; the drivers a real GPU needs are