feat: persist authored mechanic revisions

docs/DESIGN_SYSTEM.md

@@ -896,6 +896,20 @@ error, or danger indicators.
 - Tiered records with shared structure use one shared selector and side-by-side
   value columns rather than duplicating the entire editor. Template-driven copy
   must show live previews for every tier and document its placeholder syntax.
+- Talent, OS Protocol Talent, Skill Chip Talent, and Specialization rank-effect
+  forms use the shared authored-description editor. Place the exact source text
+  first because it remains authoritative when no model revision is selected.
+  Put model controls in a separate bordered section with explicit Preserve,
+  Save, and Clear choices. Keep fixed units and Attribute wording in the
+  authored template; every token value is numeric and contains only the number
+  that changes between variants, while the combat model owns Attribute
+  semantics. The token matrix
+  keeps one row per varying authored value and one column per variant so
+  operators can compare substitutions without duplicating the program editor.
+  On narrow screens, keep the matrix
+  horizontally scrollable instead of collapsing labels into ambiguous cards.
+  Show modeled previews, readiness, assumptions, and validation as text; color
+  may reinforce these states but must not replace their labels.
 
 ### Forms