Sweep all .cshtml files for encoding corruption; add pre-commit guard

Replace all corruption variants with HTML entities across 226 view files:
- 3-char UTF-8-as-Win1252 sequences (ae-corruption)
- Standalone smart/curly quotes that break C# Razor expressions
- Partially re-corrupted variants where the 3rd byte was normalised to ASCII

tools/Fix-Encoding.ps1: re-runnable sweep; uses [char] code points so the
script itself never contains a literal non-ASCII character; supports -DryRun

.githooks/pre-commit: blocks commits containing the ae-corruption byte
signature (xc3xa2xe2x82xac); git core.hooksPath = .githooks so the
hook is repo-committed and active for all future work on this machine.

Build clean; 225 unit tests pass.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Web/Views/InAppNotifications/Index.cshtml

@@ -153,7 +153,7 @@ else
         {
             <div class="card-footer d-flex justify-content-between align-items-center">
                 <small class="text-muted">
-                    Showing @((pageNumber - 1) * pageSize + 1)–@(Math.Min(pageNumber * pageSize, totalCount)) of @totalCount
+                    Showing @((pageNumber - 1) * pageSize + 1)&ndash;@(Math.Min(pageNumber * pageSize, totalCount)) of @totalCount
                 </small>
                 <nav>
                     <ul class="pagination pagination-sm mb-0">