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/ShopMobile.cshtml

@@ -445,7 +445,7 @@
                                 }
                                 else
                                 {
-                                    <a href="/Jobs/Intake/@job.JobId" class="meta-badge text-warning" title="Parts not yet checked in — tap to intake">
+                                    <a href="/Jobs/Intake/@job.JobId" class="meta-badge text-warning" title="Parts not yet checked in &mdash; tap to intake">
                                         <i class="bi bi-box-seam"></i>
                                     </a>
                                 }
@@ -608,7 +608,7 @@
                     btn.disabled = false;
                 }
             } catch (e) {
-                showToast('Network error — try again', 'danger');
+                showToast('Network error &mdash; try again', 'danger');
                 btn.innerHTML = originalHtml;
                 btn.disabled = false;
             }