docs(architecture): record Phase 4.5 builder polish

cv-builder.md (outline-driven Content tab, DnD, rich text, preview page nav,
public-CV routing fix + deployment note), cv-theme-engine.md (rich text/ATS/
print), roadmap Phase 4.5 shipped.

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

docs/architecture/cv-theme-engine.md

@@ -43,11 +43,20 @@ theme is smoke-tested automatically.
 dense), `ats-classic` (single, no graphics), `nordic` (sidebar-right), `elegant` (single, editorial),
 `creative` (sidebar-left, bold).
 
+## Rich text, ATS, and print (2026-07-18)
+
+- **Rich-text bullets** are shipped: bullets/summary support `**bold**`, `*italic*`, `__underline__`,
+  `[text](url)` via `ThemedCvRenderer.Inline` — everything is HTML-escaped first, then a whitelist is
+  re-applied, so no user tag survives. Storage stays plain text (no HTML, no sanitiser dependency).
+- **ATS-friendliness** is a data flag: `CvTheme.AtsFriendly` (set on the single-column themes),
+  surfaced in `GET /api/cv/themes` and badged in the Customize tab. Two-column (sidebar) themes are not
+  flagged, as sidebar layouts can trip naive resume parsers.
+- **Print quality**: the renderer emits `break-inside: avoid` on entries, `break-after: avoid` on
+  section headings, and widow/orphan control, so entries don't split across a page in the Playwright
+  PDF pass.
+
 ## Deliberately not here (yet)
 
-- **Rich-text inside bullets.** The render model treats bullets as plain strings, so the builder's text
-  areas are plain text. Adding bold/italic/links means the render model carries inline runs and the
-  renderer emits them — a self-contained extension, no theme changes.
 - **PDF page numbers.** `ShowPageNumbers` is carried through settings but the actual footer is a
   Playwright `footerTemplate` concern (the PDF exporter), not CSS paged-media (Chromium's margin boxes
   are unreliable). Wire it in `PlaywrightCvPdfExporter` when needed.