fix: comprehensive boot hardening — crashes, warnings, sensors, bare-metal PS/2

- firmware-loader: handle missing INIT_NOTIFY gracefully (Option<RawFd>)
- driver-params: suppress ENODEV (19) on missing driver-manager scheme
- compositor: add wl_seat.name + pointer capabilities for Qt6 compat
- greeter: use redox QPA (libqredox.so) instead of broken Qt6 Wayland
- greeter: reduce DRM wait 10s→2s, kded6 offscreen QPA to avoid crash
- thermald: add CPU die temperature via MSR IA32_THERM_STATUS (Linux coretemp)
- pcid: diagnostic MCFG warning with Q35 guidance, address validation
- dhcpd: auto-interface detection (P0-dhcpd-auto-iface.patch wired)
- procmgr: SIGCHLD EPERM→debug (kernel limitation, not a bug)
- ps2d LED: warn→debug on modern hw without real PS/2 controller
- ps2d mouse: 10×1s→3×250ms retry, fast-fail on unknown response
- i2c RON: handle empty response from i2cd when no adapters present
- base recipe: wire 6 new/improved patches
- config: remove INIT_SKIP, enable all 14 previously-suppressed daemons

local/recipes/system/firmware-loader/source/src/main.rs

@@ -49,17 +49,25 @@ fn default_firmware_dir() -> PathBuf {
 }
 
 #[cfg(target_os = "redox")]
-unsafe fn get_init_notify_fd() -> RawFd {
-    let fd: RawFd = env::var("INIT_NOTIFY")
-        .expect("firmware-loader: INIT_NOTIFY not set")
-        .parse()
-        .expect("firmware-loader: INIT_NOTIFY is not a valid fd");
+unsafe fn get_init_notify_fd() -> Option<RawFd> {
+    let Ok(value) = env::var("INIT_NOTIFY") else {
+        eprintln!("firmware-loader: INIT_NOTIFY not set; readiness notification disabled");
+        return None;
+    };
+    let Ok(fd) = value.parse::<RawFd>() else {
+        eprintln!("firmware-loader: INIT_NOTIFY is not a valid fd; readiness notification disabled");
+        return None;
+    };
     libc::fcntl(fd, libc::F_SETFD, libc::FD_CLOEXEC);
-    fd
+    Some(fd)
 }
 
 #[cfg(target_os = "redox")]
-fn notify_scheme_ready(notify_fd: RawFd, socket: &Socket, scheme: &mut FirmwareScheme) {
+fn notify_scheme_ready(notify_fd: Option<RawFd>, socket: &Socket, scheme: &mut FirmwareScheme) {
+    let Some(notify_fd) = notify_fd else {
+        info!("firmware-loader: no INIT_NOTIFY fd, skipping readiness notification");
+        return;
+    };
     let cap_id = scheme
         .scheme_root()
         .expect("firmware-loader: scheme_root failed");
@@ -77,7 +85,7 @@ fn notify_scheme_ready(notify_fd: RawFd, socket: &Socket, scheme: &mut FirmwareS
 }
 
 #[cfg(target_os = "redox")]
-fn run_daemon(notify_fd: RawFd, registry: FirmwareRegistry) -> ! {
+fn run_daemon(notify_fd: Option<RawFd>, registry: FirmwareRegistry) -> ! {
     let socket = Socket::create().expect("firmware-loader: failed to create scheme socket");
     let mut scheme = FirmwareScheme::new(registry);