Applicants: auto-tags + deep search w/ highlight; never delete (archive instead)

- Tags: parser extracts cert/skill keywords (mmt, ICU/CCU, دیالیز, اتاق عمل,
  اورژانس, مسئول فنی, پروانه‌دار…) + role + city into TalentListing.Tags
  (+ migration); shown as chips on cards.
- Deep search on /Talent: «جستجوی عمیق» box does Postgres ILIKE across
  tags, description, person, area, role, city (every term must match);
  matches are highlighted with <mark> via SearchHighlight.
- Never delete: ShiftStatus.Archived + the admin «بایگانی گروهی» action now
  ARCHIVES aggregated posts (hidden from site, kept in DB) and leaves the
  raw crawl rows intact — a permanent archive for future analytics.

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

src/JobsMedical.Web/Migrations/20260608075435_TalentTags.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace JobsMedical.Web.Migrations
+{
+    /// <inheritdoc />
+    public partial class TalentTags : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "Tags",
+                table: "TalentListings",
+                type: "character varying(500)",
+                maxLength: 500,
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Tags",
+                table: "TalentListings");
+        }
+    }
+}

src/JobsMedical.Web/Migrations/AppDbContextModelSnapshot.cs

@@ -1032,6 +1032,10 @@ namespace JobsMedical.Web.Migrations
                     b.Property<int>("Status")
                         .HasColumnType("integer");
 
+                    b.Property<string>("Tags")
+                        .HasMaxLength(500)
+                        .HasColumnType("character varying(500)");
+
                     b.Property<int?>("YearsExperience")
                         .HasColumnType("integer");