fix: quiet module load log (Verbose instead of Information) (#470)

## Summary

Closes #458.

The `Plaster vX.Y.Z module loaded successfully (...)` line printed on
**every** import because it was logged at `Information` level via
`Write-Information -InformationAction Continue`, which forces display
regardless of `$env:PLASTER_LOG_LEVEL`.

This demotes that message — and the symmetric `Plaster module is being
removed` message — to `Verbose`. They are now silent by default and only
surface when a user opts in with `PLASTER_LOG_LEVEL=Verbose` (and a
visible verbose stream).

The version is already read dynamically from the manifest
(`Import-PowerShellDataFile … .ModuleVersion`), so the message prints
the correct installed version (e.g. `v2.1.2`). The reporter saw `v2.0.0`
only because that was their installed build.

## Changes

- `Plaster/Plaster.psm1`: `Write-PlasterLog -Level Information` →
`-Level Verbose` for both the load and removal messages.

## Testing

- `Import-Module Plaster` — no output (silent). ✅
- `$env:PLASTER_LOG_LEVEL='Verbose'; $VerbosePreference='Continue';
Import-Module Plaster -Force` — emits `[Verbose] [Plaster] Plaster
v2.1.2 module loaded successfully (PowerShell 7.6.2)`. ✅

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: HeyItsGilbert

CHANGELOG.md

@@ -7,12 +7,20 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
-## [2.1.2] - 2026-05-26
+## [2.1.3] - 2026-06-18
 
-### Changed
+### Fixed
 
-- CI workflows migrated to PowerShellOrg reusable CI and release
-  workflows ([#457](https://github.com/PowerShellOrg/Plaster/pull/457))
+- `Import-Module Plaster` printed `Plaster vX.Y.Z module loaded
+  successfully` on every import — the message was logged at
+  `Information` level with `-InformationAction Continue`, so it
+  displayed regardless of `$env:PLASTER_LOG_LEVEL`. Demoted it (and the
+  symmetric "module is being removed" message) to `Verbose` so they are
+  silent by default and surface only when `PLASTER_LOG_LEVEL=Verbose`
+  ([#470](https://github.com/PowerShellOrg/Plaster/pull/470),
+  closes [#458](https://github.com/PowerShellOrg/Plaster/issues/458))
+
+## [2.1.2] - 2026-05-26
 
 ### Fixed
 

Plaster/Plaster.psd1

@@ -6,7 +6,7 @@
     GUID = 'cfce3c5e-402f-412a-a83a-7b7ee9832ff4'
 
     # Version number of this module.
-    ModuleVersion = '2.1.2'
+    ModuleVersion = '2.1.3'
 
     # Supported PSEditions
     CompatiblePSEditions = @('Desktop', 'Core')

Plaster/Plaster.psm1

@@ -177,7 +177,7 @@ Export-ModuleMember -Variable @('TargetNamespace', 'DefaultEncoding', 'JsonSchem
 
 # Module cleanup on removal
 $MyInvocation.MyCommand.ScriptBlock.Module.OnRemove = {
-    Write-PlasterLog -Level Information -Message "Plaster module is being removed"
+    Write-PlasterLog -Level Verbose -Message "Plaster module is being removed"
 
     # Clean up any module-scoped variables or resources
     Remove-Variable -Name 'PlasterVersion' -Scope Script -ErrorAction SilentlyContinue
@@ -188,4 +188,4 @@ $MyInvocation.MyCommand.ScriptBlock.Module.OnRemove = {
 }
 
 # Module initialization complete
-Write-PlasterLog -Level Information -Message "Plaster v$PlasterVersion module loaded successfully (PowerShell $($PSVersionTable.PSVersion))"
+Write-PlasterLog -Level Verbose -Message "Plaster v$PlasterVersion module loaded successfully (PowerShell $($PSVersionTable.PSVersion))"