fix(triggershell): fall back to pyenv/local bin dirs when resolving openrgb-hue

systemd --user services get a minimal PATH that never sources shell
rc files, so pyenv shims and pip --user installs weren't found even
though openrgb-hue was installed. Prepend the common user-install
locations before the PATH lookup.

scripts/openrgb-hue-apply.sh

@@ -1,6 +1,11 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+# Services (e.g. systemd --user units) run with a minimal PATH that skips
+# shell-init-only additions like pyenv shims or pip's --user bin dir, even
+# though those tools are installed. Add the common locations as a fallback.
+export PATH="$HOME/.local/bin:$HOME/.pyenv/shims:$PATH"
+
 if ! command -v openrgb-hue >/dev/null 2>&1; then
   echo "error: 'openrgb-hue' was not found on PATH." >&2
   echo "Install it with:" >&2