Add scrape/ingestion engine + validation, and 24h shift hour-range visualization

Scrape engine (Services/Scraping/): pluggable IListingSource (working sample + Telegram/Divar credential-ready stubs) → IngestionService (content-hash dedupe → parse → validate → review queue) → ListingValidator (completeness score + spam screen) → IngestionWorker (config-gated hosted service). RawListing gains ContentHash/Confidence/ValidationNotes; RawListingStatus.Flagged. Admin /Admin gets run-now, source list, confidence + flagged queue.

Hour-range viz: _HourBar 24h timeline bar (colored by type, overnight wrap) on shift cards, recommendation cards, and detail.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/JobsMedical.Web/Pages/Shared/_RecommendationCard.cshtml

@@ -22,6 +22,7 @@
         <span>📍 @s.Facility?.City?.Name</span>
     </div>
     <div class="row">📅 @JalaliDate.WeekDayName(s.Date)، @JalaliDate.ToLongDate(s.Date) — 🕐 @JalaliDate.Time(s.StartTime)</div>
+    <partial name="_HourBar" model="s" />
 
     @* The "why" — what makes a pattern engine trustworthy: every pick is explained. *@
     <div class="rec-reasons">