Add docs governance and Czech parity updates

assets/README.md

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+# Assets
+
+Shared visual and ritual resources that are language-independent.
+
+## Structure
+
+- `templates/` reusable templates for symbols, printables, and ceremony materials.
+
+Add new assets with clear names and short usage notes.

assets/templates/README.md

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+# Templates
+
+Place reusable templates here, for example:
+
+- print layouts
+- symbol sheets
+- ritual cards
+- contributor forms
+
+Each template should include a short note about its intended use.