fix(ui): improve knowledge reading and add isolated formatting examples

DESIGN.md

@@ -351,6 +351,19 @@ default, hover, focus, active, disabled, loading, and error behavior where those
 
 ### Curated Evidence Documents
 
+Memory and Evidence detail readers use the entire available content width, without
+the ordinary 72–75ch prose cap. This is the owner's explicit reading-layout choice.
+Long unstructured paragraphs are split for display at existing sentence/semicolon
+boundaries outside inline code and links; authored Markdown structure and stored
+content are unchanged. Paragraph spacing is 1.25em. Scope and provenance share the
+available width; provenance excerpts render Markdown rather than literal markers.
+Copy actions use the two-overlapping-sheets icon, an accessible name/tooltip and
+live success/failure feedback instead of a visible Copy label.
+
+Memory has four explicitly FAKE formatting examples, one per family, in a separate
+expandable section. They reuse the real detail reader but never enter persistence,
+indexing, link search or model recall, and expose no edit/delete/save actions.
+
 Curated evidence follows a fixed reading order: title, compact type and purpose summary, scope,
 typed content, supporting excerpts, review items, then technical provenance. Curated v4 files
 use short, visible YAML frontmatter for identity and classification. The Markdown title and