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/Help/Index.cshtml

@@ -219,7 +219,7 @@
                             </div>
                             <div>
                                 <h5 class="card-title mb-1">Reports</h5>
-                                <p class="card-text text-muted small mb-2">Financial summaries, AR aging, job throughput, inventory levels, and equipment status — all in one place.</p>
+                                <p class="card-text text-muted small mb-2">Financial summaries, AR aging, job throughput, inventory levels, and equipment status &mdash; all in one place.</p>
                                 <a asp-controller="Help" asp-action="Reports" class="btn btn-sm btn-outline-primary">Read more <i class="bi bi-arrow-right ms-1"></i></a>
                             </div>
                         </div>