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/Jobs/StatusBump.cshtml

@@ -222,7 +222,7 @@
                         Due: @job.DueDate.Value.ToString("MMM d, yyyy")
                         @if (job.DueDate < DateTime.Today && !isTerminal)
                         {
-                            <strong style="color: #dc2626;"> — OVERDUE</strong>
+                            <strong style="color: #dc2626;"> &mdash; OVERDUE</strong>
                         }
                     </div>
                 }
@@ -237,14 +237,14 @@
                 }
                 else if (isOnHold)
                 {
-                    @* On hold — offer resume (next logical status after resume by advancing) *@
+                    @* On hold &mdash; offer resume (next logical status after resume by advancing) *@
                     @if (nextStatus != null)
                     {
                         <form method="post" asp-action="StatusBump" asp-route-id="@jobId">
                             @Html.AntiForgeryToken()
                             <input type="hidden" name="newStatusId" value="@nextStatus.Id" />
                             <button type="submit" class="btn-resume">
-                                ▶ Resume — Move to @nextStatus.DisplayName
+                                ▶ Resume &mdash; Move to @nextStatus.DisplayName
                             </button>
                         </form>
                     }