docs(requirements): split typed partial swap rule

Split oversized canonical_authoring/002 into handler partial-swap flow and primitive-shape requirements.

req: canonical_authoring/002

req: canonical_authoring/014

REQUIREMENTS.md

@@ -59,7 +59,10 @@ client app state framework.
 011	Plain CSS owns appearance. [north_star]
 
 ### req: canonical/002
-002	Typed partial swaps are the primary UX, not an advanced feature: handlers change domain state in Rust, convert domain values into view values, render hemplate partials through generated helpers, and place them into generated targets. The real primitive is generated target + rendered partial + swap kind. [north_star]
+002	Typed partial swaps are the primary UX, not an advanced feature: handlers change domain state in Rust, convert domain values into view values, render hemplate partials, and place them into generated targets. [north_star]
+
+### req: canonical/014
+014	The partial-swap primitive is generated target plus rendered partial plus swap kind. [north_star]
 
 ### req: canonical/003
 003	Canonical keyed-row CRUD reads like ordinary Rust intent: create appends a rendered row partial, update/toggle replaces a keyed row partial, delete removes a keyed row, summary/text/form effects compose in tuples, arrays, or `Vec<T: IntoEffect>` for dynamic batches, and no handler chooses a target with a CSS selector. [north_star]