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/SetupWizard/Step4.cshtml

@@ -1,7 +1,7 @@
 @using PowderCoating.Application.DTOs.Wizard
 @model WizardOvensStepDto
 @{
-    ViewData["Title"] = "Setup Wizard — Shop Equipment";
+    ViewData["Title"] = "Setup Wizard — Shop Equipment";
     var progress = ViewBag.Progress as WizardProgressDto ?? new WizardProgressDto();
     int step = ViewBag.Step as int? ?? 4;
 }
@@ -14,7 +14,7 @@
         <div class="wizard-step-header">
             <span class="wizard-step-badge">Step @step of @WizardProgressDto.TotalSteps</span>
             <h2><i class="bi bi-tools me-2"></i>Shop Equipment</h2>
-            <p class="text-secondary">Register your ovens and blast setups. Ovens power the Oven Scheduler and quoting engine — at least one is required. Blast setups define each rig's throughput rate so the AI quote engine can estimate sandblasting time accurately.</p>
+            <p class="text-secondary">Register your ovens and blast setups. Ovens power the Oven Scheduler and quoting engine &mdash; at least one is required. Blast setups define each rig's throughput rate so the AI quote engine can estimate sandblasting time accurately.</p>
         </div>
 
         <form asp-action="PostStep4" method="post" onsubmit="return validateStep4()">
@@ -49,7 +49,7 @@
                 <h5 class="wizard-card-title"><i class="bi bi-fan me-2"></i>Blast Setups</h5>
                 <p class="text-secondary small mb-3">
                     Add each blast rig in your shop (cabinets, pressure pots, blast rooms). The AI quoting engine uses CFM,
-                    nozzle size, and substrate to derive a sqft/hr throughput rate. Mark one as the default — it will be
+                    nozzle size, and substrate to derive a sqft/hr throughput rate. Mark one as the default &mdash; it will be
                     pre-selected when quoting. You can also enter a measured rate override if you prefer to use real shop data.
                     Blast setups are optional; skip this section if you don't do in-house blasting.
                 </p>
@@ -132,7 +132,7 @@
                         <div class="col-12 mb-1">
                             <span class="small fw-semibold text-secondary">
                                 <i class="bi bi-rulers me-1"></i>Dimension Calculator
-                                <span class="fw-normal">(optional — enter interior oven dimensions)</span>
+                                <span class="fw-normal">(optional &mdash; enter interior oven dimensions)</span>
                             </span>
                         </div>
                         <div class="col-md-2">