refactor(vm/*): selective imports in 4 vm/ files (ADR-025 L2)

Four vm/ files, 2 stars each -> selective.

vm/state_recovery.nu:
  vm_persistence.nu [get-vm-persistence-info list-permanent-vms]
  vm/lifecycle.nu   [vm-info vm-start]

vm/ssh_utils.nu:
  vm/backend_libvirt.nu [libvirt-get-vm-ip]
  vm/persistence.nu     [get-vm-state]

vm/lifecycle.nu:
  vm/backend_libvirt.nu [8 symbols — libvirt-* ops]
  vm/persistence.nu     [4 symbols — state tracking]

vm/golden_image_builder.nu:
  vm/lifecycle.nu      [vm-create vm-info vm-stop]
  vm/vm_persistence.nu DROPPED (dead)

Validation: 39-50 pre-existing errors each (matches baseline). Zero new.

Refs: ADR-025

nulib/lib_provisioning/vm/golden_image_builder.nu

@@ -3,8 +3,9 @@
 # Builds golden images with pre-installed taskservs for 5x faster VM startup.
 # Rule 1: Single purpose, Rule 5: Atomic operations, Rule 2: Explicit types
 
-use ./vm_persistence.nu *
-use ./lifecycle.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+# vm/vm_persistence star-import was dead — dropped.
+use lib_provisioning/vm/lifecycle.nu [vm-create vm-info vm-stop]
 
 export def "build-golden-image" [
     name: string                                 # Image name

nulib/lib_provisioning/vm/lifecycle.nu

@@ -3,8 +3,14 @@
 # Higher-level VM operations: create, start, stop, delete with state tracking.
 # Rule 1: Single purpose, Rule 4: Pure functions, Rule 5: Atomic operations
 
-use ./backend_libvirt.nu *
-use ./persistence.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+use lib_provisioning/vm/backend_libvirt.nu [
+    libvirt-create-disk libvirt-create-vm libvirt-delete-vm libvirt-get-vm-info
+    libvirt-get-vm-ip libvirt-list-vms libvirt-start-vm libvirt-stop-vm
+]
+use lib_provisioning/vm/persistence.nu [
+    get-vm-state record-vm-creation remove-vm-state update-vm-state
+]
 
 export def "vm-create" [
     vm_config: record             # VM configuration (from Nickel)

nulib/lib_provisioning/vm/ssh_utils.nu

@@ -3,8 +3,9 @@
 # SSH operations for VMs: connection, provisioning, file transfer.
 # Rule 1: Single purpose, Rule 2: Explicit types
 
-use ./backend_libvirt.nu *
-use ./persistence.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+use lib_provisioning/vm/backend_libvirt.nu [libvirt-get-vm-ip]
+use lib_provisioning/vm/persistence.nu [get-vm-state]
 
 export def "vm-ssh" [
     vm_name: string               # VM name

nulib/lib_provisioning/vm/state_recovery.nu

@@ -3,8 +3,9 @@
 # Recovers VM state after host reboot and restarts permanent VMs.
 # Rule 1: Single purpose, Rule 5: Atomic operations
 
-use ./vm_persistence.nu *
-use ./lifecycle.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+use lib_provisioning/vm/vm_persistence.nu [get-vm-persistence-info list-permanent-vms]
+use lib_provisioning/vm/lifecycle.nu [vm-info vm-start]
 
 export def "recover-vms-on-boot" []: record {
     """