refactor(workspace/*): selective imports in 5 files (ADR-025 L2)

Five workspace/ files, 2 stars each -> selective.

workspace/sync.nu:
  user/config.nu [get-active-workspace get-workspace-path]
  config/accessor  DROPPED (dead)

workspace/notation.nu:
  user/config.nu [load-user-config]
  utils/config    DROPPED (dead)

workspace/migration.nu:
  user/config.nu       [get-workspace-path validate-workspace-exists]
  workspace/version.nu [5 symbols — add-migration-record, ...]

workspace/enforcement.nu:
  user/config.nu       [get-active-workspace get-active-workspace-details]
  workspace/version.nu [check-workspace-compatibility validate-workspace-structure]

workspace/detection.nu:
  user/config.nu       [get-active-workspace]
  workspace/notation.nu [get-workspace-path list-workspaces]
  — pre-existing name collision: get-workspace-path + list-workspaces
    exported by BOTH user/config and notation. Attributed to notation.nu
    (consistent with workspace/commands.nu treatment).

Validation: all 5 nu --ide-check 50 -> 0 errors.

Refs: ADR-025

nulib/lib_provisioning/workspace/detection.nu

@@ -1,8 +1,12 @@
 # Workspace and Infrastructure Detection
 # Provides PWD-based inference and context management for workspace and infrastructure
 
-use ../user/config.nu *
-use notation.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+# Name collision: get-workspace-path + list-workspaces exported by both
+# user/config.nu and workspace/notation.nu. Attribute to notation.nu
+# (consistent with workspace/commands.nu treatment).
+use lib_provisioning/user/config.nu [get-active-workspace]
+use lib_provisioning/workspace/notation.nu [get-workspace-path list-workspaces]
 
 # Infer workspace from current working directory
 # Checks if PWD is inside any registered workspace path

nulib/lib_provisioning/workspace/enforcement.nu

@@ -2,8 +2,9 @@
 # Enforces workspace requirements for all provisioning operations
 
 use std log
-use ../user/config.nu *
-use version.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+use lib_provisioning/user/config.nu [get-active-workspace get-active-workspace-details]
+use lib_provisioning/workspace/version.nu [check-workspace-compatibility validate-workspace-structure]
 
 # Commands that are allowed without an active workspace
 export def get-workspace-exempt-commands [] {

nulib/lib_provisioning/workspace/migration.nu

@@ -2,8 +2,12 @@
 # Handles workspace migrations between versions with backups and rollback
 
 use std log
-use ../user/config.nu *
-use version.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+use lib_provisioning/user/config.nu [get-workspace-path validate-workspace-exists]
+use lib_provisioning/workspace/version.nu [
+    add-migration-record get-system-version get-workspace-metadata-path
+    init-workspace-metadata load-workspace-metadata
+]
 
 # Migration strategy definitions
 export def get-migration-strategies [] {

nulib/lib_provisioning/workspace/notation.nu

@@ -1,8 +1,9 @@
 # Workspace:Infrastructure Notation Parser
 # Handles parsing and validation of unified workspace:infra notation
 
-use ../user/config.nu *
-use ../utils/config.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+# utils/config star-import was dead — dropped.
+use lib_provisioning/user/config.nu [load-user-config]
 
 # Parse workspace:infra notation
 # Supports both "workspace" and "workspace:infra" formats

nulib/lib_provisioning/workspace/sync.nu

@@ -1,8 +1,9 @@
 # Workspace sync and update operations
 # Synchronizes workspace hidden directories with provisioning source
 
-use ../config/accessor.nu *
-use ../user/config.nu *
+# Selective imports (ADR-025 Phase 3 Layer 2).
+# config/accessor star-import was dead — dropped.
+use lib_provisioning/user/config.nu [get-active-workspace get-workspace-path]
 
 # Update all workspace hidden directories and content
 export def "workspace update" [