feat(career): theme polish, rich-text bullets, entry ordering, outline API

Phase 4.5 backend enablers.
- Themes (priority 3): AtsFriendly flag on single-column themes (surfaced in
  GET /api/cv/themes), print-quality page-break rules (entries never split
  across a page; headings stay with content; widow/orphan control), darkened
  the creative sidebar for AA contrast.
- Rich text (priority 1): bullets/summary support **bold**, *italic*,
  __underline__, [text](url) via a safe inline pass — everything is HTML-escaped
  first, so no user tag can survive; only the whitelist emits markup.
- Entry ordering (priority 1): CvSectionSetting.ItemOrder reorders entries
  within a section by ItemKey, never touching the master profile.
- Outline API: GET /api/cv/outline returns the master profile as sections+entries
  with ItemKeys, so the Content tab can render editable per-item rows.
- 3 new tests (22 total in the builder suite).

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

JobTrackerApi/Services/CvRenderModel.cs

@@ -35,6 +35,7 @@ public sealed class CvRenderSection
 
 public sealed class CvRenderEntry
 {
+    public string? Key { get; set; } // master ItemKey, for override + reorder targeting
     public string? Title { get; set; }
     public string? Subtitle { get; set; }
     public string? Meta { get; set; }
@@ -106,6 +107,10 @@ public static class CvVariantResolver
             {
                 if (cfg.Hidden) continue;
                 if (!string.IsNullOrWhiteSpace(cfg.Title)) section.Title = cfg.Title!.Trim();
+                if (cfg.ItemOrder is { Count: > 0 } && section.Entries.Count > 1)
+                {
+                    section.Entries = ReorderByKey(section.Entries, cfg.ItemOrder);
+                }
             }
             if (!section.IsEmpty) model.Sections.Add(section);
         }
@@ -137,6 +142,7 @@ public static class CvVariantResolver
             if (ov?.Hidden == true) continue;
             section.Entries.Add(new CvRenderEntry
             {
+                Key = job.Id,
                 Title = Trim(ov?.Title) ?? Trim(job.Title),
                 Subtitle = Trim(ov?.Subtitle) ?? JoinDot(job.Company, job.Location),
                 Meta = DateRange(job.Start, job.End, job.IsCurrent),
@@ -157,6 +163,7 @@ public static class CvVariantResolver
             var title = string.IsNullOrWhiteSpace(ed.QualificationLevel) ? Trim(ed.Qualification) : $"{ed.Qualification} ({ed.QualificationLevel})";
             section.Entries.Add(new CvRenderEntry
             {
+                Key = ed.Id,
                 Title = Trim(ov?.Title) ?? title,
                 Subtitle = Trim(ov?.Subtitle) ?? JoinDot(ed.Institution, ed.Location),
                 Meta = DateRange(ed.Start, ed.End, false),
@@ -175,6 +182,7 @@ public static class CvVariantResolver
             if (ov?.Hidden == true) continue;
             section.Entries.Add(new CvRenderEntry
             {
+                Key = pr.Id,
                 Title = Trim(ov?.Title) ?? Trim(pr.Name),
                 Subtitle = Trim(ov?.Subtitle) ?? JoinDot(pr.Role, pr.Location),
                 Meta = DateRange(pr.Start, pr.End, false),
@@ -194,6 +202,7 @@ public static class CvVariantResolver
             if (ov?.Hidden == true) continue;
             section.Entries.Add(new CvRenderEntry
             {
+                Key = c.Id,
                 Title = Trim(ov?.Title) ?? Trim(c.Name),
                 Subtitle = Trim(ov?.Subtitle) ?? JoinDot(c.Issuer, c.Location),
                 Meta = Trim(c.Date),
@@ -216,6 +225,18 @@ public static class CvVariantResolver
         return section;
     }
 
+    // Sort entries by the variant's explicit ItemOrder; entries whose key isn't listed (or is null)
+    // keep their master order and come after the ordered ones.
+    private static List<CvRenderEntry> ReorderByKey(List<CvRenderEntry> entries, List<string> order)
+    {
+        var rank = new Dictionary<string, int>(StringComparer.Ordinal);
+        for (var i = 0; i < order.Count; i++) if (!string.IsNullOrWhiteSpace(order[i])) rank[order[i]] = i;
+        return entries
+            .Select((e, i) => (e, primary: e.Key != null && rank.TryGetValue(e.Key, out var r) ? r : int.MaxValue, i))
+            .OrderBy(x => x.primary).ThenBy(x => x.i)
+            .Select(x => x.e).ToList();
+    }
+
     private static CvItemOverride? OverrideFor(CvVariantSettings settings, string? itemKey)
     {
         if (string.IsNullOrWhiteSpace(itemKey)) return null;