Integrate zosstorage build path and runtime orchestration

Summary:

* add openssh-client to the builder image and mount host SSH keys into the dev container when available

* switch RFS to git builds, register the zosstorage source, and document the extra Rust component

* wire zosstorage into the build: add build_zosstorage(), ship the binary in the initramfs, and extend component validation

* refresh kernel configuration to 6.12.49 while dropping Xen guest selections and enabling counted-by support

* tighten runtime configs: use cached mycelium key path, add zosstorage zinit unit, bootstrap ovsdb-server, and enable openvswitch module

* adjust the network health check ping invocation and fix the RFS pack-tree --debug flag order

* update NOTES changelog, README component list, and introduce a runit helper for qemu/cloud-hypervisor testing

* add ovsdb init script wiring under config/zinit/init and ensure zosstorage is available before mycelium

config/kernel.config

@@ -1,18 +1,18 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 6.12.44 Kernel Configuration
+# Linux/x86 6.12.49 Kernel Configuration
 #
-CONFIG_CC_VERSION_TEXT="gcc (Alpine 14.2.0) 14.2.0"
+CONFIG_CC_VERSION_TEXT="gcc (GCC) 15.2.1 20250813"
 CONFIG_CC_IS_GCC=y
-CONFIG_GCC_VERSION=140200
+CONFIG_GCC_VERSION=150201
 CONFIG_CLANG_VERSION=0
 CONFIG_AS_IS_GNU=y
-CONFIG_AS_VERSION=24400
+CONFIG_AS_VERSION=24500
 CONFIG_LD_IS_BFD=y
-CONFIG_LD_VERSION=24400
+CONFIG_LD_VERSION=24500
 CONFIG_LLD_VERSION=0
-CONFIG_RUSTC_VERSION=109000
-CONFIG_RUSTC_LLVM_VERSION=200108
+CONFIG_RUSTC_VERSION=108900
+CONFIG_RUSTC_LLVM_VERSION=200107
 CONFIG_CC_CAN_LINK=y
 CONFIG_CC_CAN_LINK_STATIC=y
 CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
@@ -20,6 +20,7 @@ CONFIG_CC_HAS_ASM_GOTO_TIED_OUTPUT=y
 CONFIG_TOOLS_SUPPORT_RELR=y
 CONFIG_CC_HAS_ASM_INLINE=y
 CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
+CONFIG_CC_HAS_COUNTED_BY=y
 CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY=y
 CONFIG_RUSTC_HAS_UNNECESSARY_TRANSMUTES=y
 CONFIG_PAHOLE_VERSION=130
@@ -368,23 +369,10 @@ CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
 CONFIG_SCHED_OMIT_FRAME_POINTER=y
 CONFIG_HYPERVISOR_GUEST=y
 CONFIG_PARAVIRT=y
-CONFIG_PARAVIRT_XXL=y
 # CONFIG_PARAVIRT_DEBUG is not set
 CONFIG_PARAVIRT_SPINLOCKS=y
 CONFIG_X86_HV_CALLBACK_VECTOR=y
-CONFIG_XEN=y
-CONFIG_XEN_PV=y
-CONFIG_XEN_512GB=y
-CONFIG_XEN_PV_SMP=y
-CONFIG_XEN_PV_DOM0=y
-CONFIG_XEN_PVHVM=y
-CONFIG_XEN_PVHVM_SMP=y
-CONFIG_XEN_PVHVM_GUEST=y
-CONFIG_XEN_SAVE_RESTORE=y
-# CONFIG_XEN_DEBUG_FS is not set
-CONFIG_XEN_PVH=y
-CONFIG_XEN_DOM0=y
-CONFIG_XEN_PV_MSR_SAFE=y
+# CONFIG_XEN is not set
 CONFIG_KVM_GUEST=y
 CONFIG_ARCH_CPUIDLE_HALTPOLL=y
 CONFIG_PVH=y
@@ -528,7 +516,7 @@ CONFIG_HOTPLUG_CPU=y
 CONFIG_LEGACY_VSYSCALL_XONLY=y
 # CONFIG_LEGACY_VSYSCALL_NONE is not set
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="intel_iommu=on kvm-intel.nested=1 console=ttyS1,115200n8 console=tty1 consoleblank=0 earlyprintk=serial,ttyS1,115200n8 loglevel=7"
+CONFIG_CMDLINE="consoleblank=0 earlyprintk=serial loglevel=7"
 # CONFIG_CMDLINE_OVERRIDE is not set
 CONFIG_MODIFY_LDT_SYSCALL=y
 # CONFIG_STRICT_SIGALTSTACK_SIZE is not set
@@ -573,6 +561,7 @@ CONFIG_MITIGATION_SRBDS=y
 CONFIG_MITIGATION_SSB=y
 CONFIG_MITIGATION_ITS=y
 CONFIG_MITIGATION_TSA=y
+CONFIG_MITIGATION_VMSCAPE=y
 CONFIG_ARCH_HAS_ADD_PAGES=y
 
 #
@@ -737,7 +726,6 @@ CONFIG_INTEL_IDLE=y
 #
 CONFIG_PCI_DIRECT=y
 CONFIG_PCI_MMCONFIG=y
-CONFIG_PCI_XEN=y
 CONFIG_MMCONF_FAM10H=y
 # CONFIG_PCI_CNB20LE_QUIRK is not set
 # CONFIG_ISA_BUS is not set
@@ -1959,7 +1947,6 @@ CONFIG_FIB_RULES=y
 CONFIG_NET_9P=m
 CONFIG_NET_9P_FD=m
 CONFIG_NET_9P_VIRTIO=m
-CONFIG_NET_9P_XEN=m
 # CONFIG_NET_9P_RDMA is not set
 # CONFIG_NET_9P_DEBUG is not set
 # CONFIG_CAIF is not set
@@ -2009,7 +1996,6 @@ CONFIG_PCI_QUIRKS=y
 CONFIG_PCI_REALLOC_ENABLE_AUTO=y
 CONFIG_PCI_STUB=m
 # CONFIG_PCI_PF_STUB is not set
-CONFIG_XEN_PCIDEV_FRONTEND=m
 CONFIG_PCI_ATS=y
 CONFIG_PCI_LOCKLESS_CONFIG=y
 CONFIG_PCI_IOV=y
@@ -2127,7 +2113,6 @@ CONFIG_ALLOW_DEV_COREDUMP=y
 # CONFIG_DEBUG_DEVRES is not set
 # CONFIG_DEBUG_TEST_DRIVER_REMOVE is not set
 # CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
-CONFIG_SYS_HYPERVISOR=y
 CONFIG_GENERIC_CPU_DEVICES=y
 CONFIG_GENERIC_CPU_AUTOPROBE=y
 CONFIG_GENERIC_CPU_VULNERABILITIES=y
@@ -2397,8 +2382,6 @@ CONFIG_CDROM_PKTCDVD=m
 CONFIG_CDROM_PKTCDVD_BUFFERS=8
 # CONFIG_CDROM_PKTCDVD_WCACHE is not set
 CONFIG_ATA_OVER_ETH=m
-CONFIG_XEN_BLKDEV_FRONTEND=m
-CONFIG_XEN_BLKDEV_BACKEND=m
 CONFIG_VIRTIO_BLK=m
 CONFIG_BLK_DEV_RBD=m
 # CONFIG_BLK_DEV_UBLK is not set
@@ -2602,7 +2585,6 @@ CONFIG_SCSI_FLASHPOINT=y
 # CONFIG_SCSI_MYRB is not set
 # CONFIG_SCSI_MYRS is not set
 CONFIG_VMWARE_PVSCSI=m
-CONFIG_XEN_SCSI_FRONTEND=m
 CONFIG_HYPERV_STORAGE=m
 CONFIG_LIBFC=m
 CONFIG_LIBFCOE=m
@@ -3408,8 +3390,6 @@ CONFIG_IEEE802154_ATUSB=m
 # CONFIG_WWAN is not set
 # end of Wireless WAN
 
-CONFIG_XEN_NETDEV_FRONTEND=m
-CONFIG_XEN_NETDEV_BACKEND=m
 CONFIG_VMXNET3=m
 CONFIG_FUJITSU_ES=m
 CONFIG_HYPERV_NET=m
@@ -3583,9 +3563,6 @@ CONFIG_N_GSM=m
 CONFIG_NOZOMI=m
 # CONFIG_NULL_TTY is not set
 CONFIG_HVC_DRIVER=y
-CONFIG_HVC_IRQ=y
-CONFIG_HVC_XEN=y
-CONFIG_HVC_XEN_FRONTEND=y
 CONFIG_SERIAL_DEV_BUS=y
 CONFIG_SERIAL_DEV_CTRL_TTYPORT=y
 # CONFIG_TTY_PRINTK is not set
@@ -3636,7 +3613,6 @@ CONFIG_TCG_TIS_I2C_NUVOTON=m
 CONFIG_TCG_NSC=m
 CONFIG_TCG_ATMEL=m
 CONFIG_TCG_INFINEON=m
-CONFIG_TCG_XEN=m
 CONFIG_TCG_CRB=m
 # CONFIG_TCG_VTPM_PROXY is not set
 # CONFIG_TCG_TIS_ST33ZP24_I2C is not set
@@ -4412,7 +4388,6 @@ CONFIG_INTEL_MEI_WDT=m
 CONFIG_NI903X_WDT=m
 CONFIG_NIC7018_WDT=m
 CONFIG_MEN_A21_WDT=m
-CONFIG_XEN_WDT=m
 
 #
 # PCI-based Watchdog Cards
@@ -4868,7 +4843,6 @@ CONFIG_DRM_CIRRUS_QEMU=m
 # CONFIG_TINYDRM_REPAPER is not set
 # CONFIG_TINYDRM_ST7586 is not set
 # CONFIG_TINYDRM_ST7735R is not set
-# CONFIG_DRM_XEN_FRONTEND is not set
 CONFIG_DRM_VBOXVIDEO=m
 # CONFIG_DRM_GUD is not set
 # CONFIG_DRM_SSD130X is not set
@@ -4920,7 +4894,6 @@ CONFIG_FB_EFI=y
 # CONFIG_FB_UDL is not set
 # CONFIG_FB_IBM_GXT4500 is not set
 # CONFIG_FB_VIRTUAL is not set
-CONFIG_XEN_FBDEV_FRONTEND=m
 # CONFIG_FB_METRONOME is not set
 # CONFIG_FB_MB862XX is not set
 CONFIG_FB_HYPERV=m
@@ -5132,7 +5105,6 @@ CONFIG_SND_PCMCIA=y
 # CONFIG_SND_SOC is not set
 CONFIG_SND_X86=y
 # CONFIG_HDMI_LPE_AUDIO is not set
-# CONFIG_SND_XEN_FRONTEND is not set
 CONFIG_SND_VIRTIO=m
 CONFIG_HID_SUPPORT=y
 CONFIG_HID=m
@@ -5349,7 +5321,6 @@ CONFIG_USB_R8A66597_HCD=m
 # CONFIG_USB_HCD_BCMA is not set
 # CONFIG_USB_HCD_SSB is not set
 # CONFIG_USB_HCD_TEST_MODE is not set
-# CONFIG_USB_XEN_HCD is not set
 
 #
 # USB Device Class drivers
@@ -6024,41 +5995,6 @@ CONFIG_HYPERV_UTILS=m
 CONFIG_HYPERV_BALLOON=m
 # end of Microsoft Hyper-V guest support
 
-#
-# Xen driver support
-#
-CONFIG_XEN_BALLOON=y
-CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y
-CONFIG_XEN_MEMORY_HOTPLUG_LIMIT=512
-CONFIG_XEN_SCRUB_PAGES_DEFAULT=y
-CONFIG_XEN_DEV_EVTCHN=m
-CONFIG_XEN_BACKEND=y
-CONFIG_XENFS=m
-CONFIG_XEN_COMPAT_XENFS=y
-CONFIG_XEN_SYS_HYPERVISOR=y
-CONFIG_XEN_XENBUS_FRONTEND=y
-CONFIG_XEN_GNTDEV=m
-CONFIG_XEN_GRANT_DEV_ALLOC=m
-# CONFIG_XEN_GRANT_DMA_ALLOC is not set
-CONFIG_SWIOTLB_XEN=y
-CONFIG_XEN_PCI_STUB=y
-CONFIG_XEN_PCIDEV_BACKEND=m
-# CONFIG_XEN_PVCALLS_FRONTEND is not set
-# CONFIG_XEN_PVCALLS_BACKEND is not set
-CONFIG_XEN_SCSI_BACKEND=m
-CONFIG_XEN_PRIVCMD=m
-CONFIG_XEN_ACPI_PROCESSOR=m
-CONFIG_XEN_MCE_LOG=y
-CONFIG_XEN_HAVE_PVMMU=y
-CONFIG_XEN_EFI=y
-CONFIG_XEN_AUTO_XLATE=y
-CONFIG_XEN_ACPI=y
-CONFIG_XEN_SYMS=y
-CONFIG_XEN_HAVE_VPMU=y
-CONFIG_XEN_UNPOPULATED_ALLOC=y
-# CONFIG_XEN_VIRTIO is not set
-# end of Xen driver support
-
 # CONFIG_GREYBUS is not set
 # CONFIG_COMEDI is not set
 CONFIG_STAGING=y