chore(deps): libloading 0.8 -> 0.9 across the five crates that dlopen

All five declarations move together (pf-encode twice — Linux and Windows —
plus pf-client-core, pf-zerocopy and punktfunk-host), because a split would
have compiled two copies of a crate whose whole job is holding a process-wide
dlopen handle.

No source changes. 0.9 replaces the concrete parameter types with sealed traits
— `Library::new(impl AsFilename)` and `Library::get(impl AsSymbolName)` — and
both cover what our 16 call sites already pass: `&str` literals for the sonames
(`libnvidia-encode.so.1`, `libva.so.2`, `libnvidia-ml.so.1`, `libcuda.so.1`) and
`&[u8; N]` NUL-terminated byte literals for the symbols, which 0.9 implements
explicitly alongside `&[u8]`. MSRV rises to 1.88; the workspace pins 1.96.

libloading 0.8 does not leave the lock, and shouldn't: what remains is
`clang-sys` under `bindgen`, reached only as a BUILD-dependency of
ffmpeg-sys-next / libspa-sys / pyrowave-sys. That copy runs at build time and is
linked into nothing we ship.

Verified on CachyOS (rustc 1.96.0):
  cargo clippy --workspace --all-targets --locked -- -D warnings                 OK
  cargo clippy -p pf-encode --all-targets --locked --features nvenc,vulkan-encode,pyrowave -- -D warnings   OK
      (the only leg that compiles enc/linux/nvenc_cuda.rs, where the `lib.get(b"…\0")` calls live)
  cargo clippy -p punktfunk-host -p pf-encode -p pf-zerocopy -p pf-client-core --locked -- -D warnings   OK  (shipping build)
  cargo test -p punktfunk-host --bins --locked    501 passed, 0 failed, 2 ignored
  cargo test -p pf-encode --locked                33 passed, 5 ignored
  cargo test -p pf-zerocopy --locked              40 passed
  cargo fmt --all --check                         clean

Cargo.lock

@@ -147,7 +147,7 @@ version = "0.38.0+1.3.281"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bb44936d800fea8f016d7f2311c6a4f97aebd5dc86f09906139ec848cf3a46f"
 dependencies = [
- "libloading",
+ "libloading 0.8.9",
 ]
 
 [[package]]
@@ -805,7 +805,7 @@ checksum = "157a8ba7b480713b56f4c09fd13fc3e0a22a5dfab8097ba61cbc5feef950788a"
 dependencies = [
  "glob",
  "libc",
- "libloading",
+ "libloading 0.8.9",
 ]
 
 [[package]]
@@ -1039,7 +1039,7 @@ version = "0.16.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "17200eb07e7d85a243aa1bf4569a7aa998385ba98d14833973a817a63cc86e92"
 dependencies = [
- "libloading",
+ "libloading 0.8.9",
 ]
 
 [[package]]
@@ -2324,7 +2324,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6aae1df220ece3c0ada96b8153459b67eebe9ae9212258bb0134ae60416fdf76"
 dependencies = [
  "libc",
- "libloading",
+ "libloading 0.8.9",
 ]
 
 [[package]]
@@ -2404,6 +2404,16 @@ dependencies = [
  "windows-link 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "libloading"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "754ca22de805bb5744484a5b151a9e1a8e837d5dc232c2d7d8c2e3492edc8b60"
+dependencies = [
+ "cfg-if",
+ "windows-link 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "libm"
 version = "0.2.16"
@@ -3003,7 +3013,7 @@ dependencies = [
  "ash",
  "async-channel",
  "libc",
- "libloading",
+ "libloading 0.9.0",
  "mdns-sd",
  "openh264",
  "opus",
@@ -3088,7 +3098,7 @@ dependencies = [
  "ash",
  "ffmpeg-next",
  "libc",
- "libloading",
+ "libloading 0.9.0",
  "libvpl-sys",
  "nvidia-video-codec-sdk",
  "openh264",
@@ -3279,7 +3289,7 @@ dependencies = [
  "ash",
  "khronos-egl",
  "libc",
- "libloading",
+ "libloading 0.9.0",
  "serde",
  "serde_json",
  "tempfile",
@@ -3624,7 +3634,7 @@ dependencies = [
  "hyper-util",
  "if-addrs 0.13.4",
  "libc",
- "libloading",
+ "libloading 0.9.0",
  "log",
  "mac_address",
  "mdns-sd",

crates/pf-client-core/Cargo.toml

@@ -141,7 +141,7 @@ pf-vaadec = { path = "../pf-vaadec" }
 # libva itself is dlopen'd, never linked (see `video_vaapi_native`'s module docs): the
 # container can then compile and clippy the whole rung without `libva-dev`, and a machine
 # without a VAAPI runtime gets a clean refusal instead of a packaging dependency.
-libloading = "0.8"
+libloading = "0.9"
 # The gamescope overlay watcher (`overlay_focus`): read two CARDINAL properties off a
 # gamescope root window and block on PropertyNotify. `default-features = false` keeps the
 # pure-Rust `RustConnection` — no libxcb link, so no new C dependency on any client package

crates/pf-encode/Cargo.toml

@@ -54,7 +54,7 @@ libc = "0.2"
 # the dep stays unconditional to mirror the host's Linux target — unused-but-declared is harmless).
 ash = "0.38"
 # `libnvidia-encode.so.1` is dlopen'd at runtime for the direct-SDK NVENC/CUDA backend.
-libloading = "0.8"
+libloading = "0.9"
 # Direct-SDK NVENC (raw `sys::nvEncodeAPI` types; entry points resolved at runtime). `ci-check` =
 # vendored bindings, no CUDA toolkit at build.
 nvidia-video-codec-sdk = { version = "0.4", features = ["ci-check"], optional = true }
@@ -67,7 +67,7 @@ nvidia-video-codec-sdk = { version = "0.4", features = ["ci-check"], optional =
 # AMD (AMF) + Intel (QSV) hardware encode via libavcodec (behind `amf-qsv`; link-imports FFmpeg).
 ffmpeg-next = { version = "9", optional = true }
 # `libnvidia-encode`/`nvEncodeAPI64.dll` resolved at runtime; the NVENC status→cause table dlopen.
-libloading = "0.8"
+libloading = "0.9"
 # Native Intel QSV (VPL): vendored static MIT dispatcher + bindgen'd C API, only under `qsv`.
 libvpl-sys = { path = "../libvpl-sys", optional = true }
 # PyroWave (opt-in wired-LAN wavelet codec) — vendored codec + bindgen'd C API, only under

crates/pf-zerocopy/Cargo.toml

@@ -20,7 +20,7 @@ tracing = "0.1"
 libc = "0.2"
 # `libcuda.so.1` is dlopen'd at runtime (NOT link-time) so one Linux binary runs on NVIDIA
 # (zero-copy via CUDA) AND on AMD/Intel (VAAPI, no NVIDIA driver present) — see `cuda::ffi`.
-libloading = "0.8"
+libloading = "0.9"
 # EGL imports the PipeWire dmabuf, CUDA maps it (`dynamic` = load the NVIDIA libEGL at runtime).
 khronos-egl = { version = "6", features = ["dynamic"] }
 # Vulkan bridge for LINEAR dmabufs (gamescope): VK_EXT_external_memory_dma_buf import,

crates/punktfunk-host/Cargo.toml

@@ -208,7 +208,7 @@ pipewire = "0.9"
 rusqlite = { version = "0.40", features = ["bundled"] }
 # `libcuda.so.1` is dlopen'd at runtime (NOT link-time) so one Linux binary runs on NVIDIA
 # (zero-copy via CUDA) AND on AMD/Intel (VAAPI, no NVIDIA driver present) — see `zerocopy::cuda`.
-libloading = "0.8"
+libloading = "0.9"
 
 [target.'cfg(target_os = "windows")'.dependencies]
 # Windows host backends. `windows` covers the Win32/CCD APIs the SudoVDA virtual-display backend