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.

docs/architecture/cv-theme-engine.md

@@ -51,9 +51,11 @@ dense), `ats-classic` (single, no graphics), `nordic` (sidebar-right), `elegant`
 - **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.
+- **Print quality**: ordinary entries use `break-inside: avoid-page`; content classified as too tall
+  for a page is allowed to flow between bullets/paragraphs so Chromium cannot clip an unsplittable
+  block. Section headings avoid a following break, list items carry widow/orphan rules, and long
+  names/titles/contact values/URLs/tags wrap within `minmax(0, …)` columns. Typography is not scaled
+  down to mask overflow.
 
 ## Deliberately not here (yet)