feat: merge upstream master - version 4.94

Merge upstream PiKVM master branch updates:

- Bump version from 4.93 to 4.94
- HID: improved jiggler pattern for better compatibility
- Streamer: major refactoring for improved performance and maintainability
- Prometheus: tidying GPIO channel name formatting
- Web: added __gpio-label class for custom styling
- HID: customizable /api/hid/print delay configuration
- ATX: independent power/reset regions for better control
- OLED: added --fill option for display testing
- Web: improved keyboard handling in modal dialogs
- Web: enhanced login error messages
- Switch: added heartbeat functionality
- Web: mouse touch code simplification and refactoring
- Configs: use systemd-networkd-wait-online --any by default
- PKGBUILD: use cp -r to install systemd units properly
- Various bug fixes and performance improvements

configs/os/services/kvmd-localhid.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=PiKVM - Local HID to KVMD proxy
+After=kvmd.service systemd-udevd.service
+
+[Service]
+User=kvmd-localhid
+Group=kvmd-localhid
+Type=simple
+Restart=always
+RestartSec=3
+
+ExecStart=/usr/bin/kvmd-localhid --run
+TimeoutStopSec=3
+
+[Install]
+WantedBy=multi-user.target

configs/os/services/systemd-networkd-wait-online.service.d/11-pikvm-wait-any.conf

@@ -0,0 +1,8 @@
+# Fix https://github.com/pikvm/pikvm/issues/1514:
+# Wait for any single network interface, not all configured ones
+# (Rationale: when user configures Wi-Fi via pikvm.txt or otherwise,
+#  we do not delete the Ethernet config, which means it will remain active
+#  regardless of whether the user ever intended to use Ethernet.)
+[Service]
+ExecStart=
+ExecStart=/usr/lib/systemd/systemd-networkd-wait-online --any