feat: complete Catppuccin themes and refine terminal rendering

Add Frappe and Macchiato, unify themed pane surfaces, and default to opaque
backgrounds without blur while preserving explicit appearance settings.
Keep default dividers one physical pixel wide at high display scaling.

Align rounded box strokes with adjacent cells and preserve modern Grok
console rendering for new local Windows terminals unless overridden.
Include the regression coverage and synchronized bilingual release notes.

scripts/platform_cfg_budget.txt

@@ -1 +1 @@
-488
+485