feat(cv): harden multi-page builder

Wrap pathological content, paginate oversized entries, measure A4 and Letter previews correctly, unify section ordering, and gate stored-output actions on saved state.

JobTrackerApi.Tests/CvBuilderTests.cs

@@ -96,6 +96,27 @@ public sealed class CvBuilderTests
         Assert.Contains(model.Sections, s => s.Title == "Volunteering" && s.Bullets.Contains("Coached juniors"));
     }
 
+    [Fact]
+    public void Resolver_places_custom_sections_in_the_shared_section_order()
+    {
+        var settings = new CvVariantSettings
+        {
+            Sections =
+            {
+                new CvSectionSetting { Key = "custom:vol" },
+                new CvSectionSetting { Key = "summary" },
+            },
+            CustomSections =
+            {
+                new CvCustomSectionSetting { Key = "vol", Title = "Volunteering", Items = { "Coached juniors" } },
+            },
+        };
+
+        var model = CvVariantResolver.Build(Rich(), settings, "F", null);
+        Assert.True(model.Sections.FindIndex(section => section.Key == "custom:vol")
+            < model.Sections.FindIndex(section => section.Key == "summary"));
+    }
+
     // ---- Renderer (one path, every theme is data) ----
 
     [Fact]
@@ -164,6 +185,31 @@ public sealed class CvBuilderTests
         Assert.False(CvThemeCatalog.Resolve("technical").AtsFriendly); // sidebar = not ATS-safe
     }
 
+    [Fact]
+    public void Long_content_wraps_and_can_flow_across_pages_without_shrinking_typography()
+    {
+        var profile = Rich();
+        profile.Contact.FullName = new string('N', 180);
+        profile.Contact.Email = $"{new string('e', 180)}@example.com";
+        profile.Jobs[0].Title = new string('T', 220);
+        profile.Jobs[0].Company = new string('C', 220);
+        profile.Jobs[0].Bullets = Enumerable.Range(1, 7)
+            .Select(index => index == 1 ? new string('x', 500) : $"Detailed achievement {index} with readable typography.")
+            .ToList();
+
+        var renderer = new ThemedCvRenderer();
+        var model = CvVariantResolver.Build(profile, new CvVariantSettings(), "F", null);
+        var html = renderer.Render(model, CvThemeCatalog.Resolve("technical"), new CvVariantSettings { ThemeId = "technical" }).Html;
+
+        Assert.Contains("class=\"entry entry-flow\"", html);
+        Assert.Contains("class=\"item-flow\"", html);
+        Assert.Contains("overflow-wrap:anywhere", html);
+        Assert.Contains("grid-template-columns:62mm minmax(0,1fr)", html);
+        Assert.Contains("overflow:visible", html);
+        Assert.Contains("white-space:normal", html);
+        Assert.DoesNotContain("transform:scale", html);
+    }
+
     [Fact]
     public void Accent_override_reaches_the_css()
     {