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/Companies/Index.cshtml

@@ -61,7 +61,7 @@
                     <div class="input-group">
                         <span class="input-group-text"><i class="bi bi-search"></i></span>
                         <input type="text" name="searchTerm" class="form-control"
-                               placeholder="Search by name, code, email, phone…"
+                               placeholder="Search by name, code, email, phone&hellip;"
                                value="@searchTerm" />
                     </div>
                 </div>
@@ -265,7 +265,7 @@
                     </table>
                 </div>
 
-                <!-- Mobile card view — shown on screens < 992px (table-responsive hidden by mobile-cards.css) -->
+                <!-- Mobile card view &mdash; shown on screens < 992px (table-responsive hidden by mobile-cards.css) -->
                 <div class="mobile-card-view">
                     <div class="mobile-card-list">
                         @foreach (var company in Model)
@@ -321,7 +321,7 @@
                 {
                     <div class="card-footer d-flex justify-content-between align-items-center">
                         <div class="text-muted small">
-                            Showing @((pageNumber - 1) * pageSize + 1)–@(Math.Min(pageNumber * pageSize, totalCount)) of @totalCount companies
+                            Showing @((pageNumber - 1) * pageSize + 1)&ndash;@(Math.Min(pageNumber * pageSize, totalCount)) of @totalCount companies
                         </div>
                         <div class="d-flex align-items-center gap-3">
                             <div>
@@ -448,7 +448,7 @@
                     <h6 class="fw-bold text-danger"><i class="bi bi-fire me-2"></i>Hard Delete (Permanent)</h6>
                     <p class="text-muted small mb-2">
                         <strong class="text-danger">This cannot be undone.</strong>
-                        All company data — users, jobs, quotes, customers, invoices, and everything else — will be
+                        All company data &mdash; users, jobs, quotes, customers, invoices, and everything else &mdash; will be
                         <strong>permanently and irreversibly deleted</strong> from the database.
                     </p>
                     <div class="alert alert-danger alert-permanent py-2 mb-3">