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/BugReport/Index.cshtml

@@ -246,7 +246,7 @@
                     </table>
                 </div>
 
-                <!-- Mobile card view — shown on screens < 992px -->
+                <!-- Mobile card view &mdash; shown on screens < 992px -->
                 <div class="mobile-card-view">
                     <div class="mobile-card-list">
                         @foreach (var report in Model)
@@ -313,7 +313,7 @@
                 {
                     <div class="d-flex justify-content-between align-items-center px-3 py-2 border-top">
                         <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">