v1.8.17.0: Fix mojibake corruption risk in Docs/_gen-reference.ps1

Get-Content $file -Raw (without -Encoding UTF8) read sqmSQLTool-reference.html
(no BOM) using the system ANSI codepage under Windows PowerShell 5.1, mis-decoding
multi-byte UTF-8 characters (box-drawing chars, emoji) and permanently corrupting
them on write-back. Found while regenerating the reference after today's
docstring updates - a plain `powershell -File _gen-reference.ps1` run produced
mojibake across the whole file; discarded and fixed instead of committing it.

Added -Encoding UTF8. Verified clean under both PS 5.1 and PS 7 - the reference
content itself was already current (todays changes only touched .DESCRIPTION/
.PARAMETER text, which this generator does not read; only .SYNOPSIS/.EXAMPLE
feed the reference).

Author: Uwe Janke

CHANGELOG.md

@@ -1,5 +1,21 @@
 # sqmSQLTool — Changelog
 
+## [1.8.17.0] — 2026-07-02
+
+### Bugfix
+
+**Docs/_gen-reference.ps1** — Mojibake-Bug bei Ausfuehrung unter Windows PowerShell 5.1
+- `Get-Content $file -Raw` (ohne `-Encoding UTF8`) las `sqmSQLTool-reference.html`
+  (keine BOM) unter PS 5.1 mit der System-ANSI-Codepage statt UTF-8. Mehrbyte-
+  Zeichen (z. B. "─", Emojis) wurden dadurch falsch decodiert und beim
+  Zurueckschreiben als kaputtes UTF-8 dauerhaft verstuemmelt (Mojibake).
+- Fix: `-Encoding UTF8` ergaenzt. Unter PS 5.1 und PS 7 getestet — reference.html
+  bleibt bei erneuter Generierung inhaltlich unveraendert (143 Funktionen,
+  Cards/Nav/Overview synchron), kein Mojibake mehr.
+- `sqmSQLTool-reference.html` selbst war bereits aktuell (unsere heutigen Docstring-
+  Aenderungen betrafen nur `.DESCRIPTION`/`.PARAMETER`, die dieser Generator nicht
+  ausliest — nur `.SYNOPSIS` und `.EXAMPLE` fliessen in die Referenz ein).
+
 ## [1.8.16.0] — 2026-07-02
 
 ### Doku

Docs/_gen-reference.ps1

@@ -91,7 +91,7 @@ function Get-Meta([string]$name){
   [pscustomobject]@{ Syn=$syn; Examples=$ex }
 }
 
-$htmlOrig = Get-Content $file -Raw
+$htmlOrig = Get-Content $file -Raw -Encoding UTF8
 $ovMap = @{}
 foreach($m in [regex]::Matches($htmlOrig,'<td class="psdb-st-ov-fn">([^<]+)</td><td>(.*?)</td>')){
   $ovMap[$m.Groups[1].Value] = $m.Groups[2].Value

sqmSQLTool.psd1

@@ -17,7 +17,7 @@
 	RootModule			   = 'sqmSQLTool.psm1'
 
 	# Version number of this module.
-	ModuleVersion		   = '1.8.16.0'
+	ModuleVersion		   = '1.8.17.0'
 
 	# ID used to uniquely identify this module
 	GUID				   = 'c4b10ba2-aee2-4d8d-ad86-a6e97c346ba6'