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/NotificationLogs/Index.cshtml

@@ -70,7 +70,7 @@
                 <div class="col-md-4">
                     <label class="form-label small fw-semibold">Search</label>
                     <input type="text" name="searchTerm" value="@ViewBag.SearchTerm" class="form-control"
-                           placeholder="Recipient, job number, quote number…" />
+                           placeholder="Recipient, job number, quote number&hellip;" />
                 </div>
                 <div class="col-md-2">
                     <label class="form-label small fw-semibold">Channel</label>