fix(agent-presets): declare the selected event on the unified session types entrypoint

The persistence catalog recognizes augmentations of
'@deepseek-ai/dsh-session/types' alone, so the old root-specifier
declaration compiled but silently vanished from the generated catalog; the
Agent Note also drops its internal repository link for the public-links
gate, and the persistence catalog pair re-records with the restored
agent-preset section.

packages/preset/agent-presets/src/session.ts

@@ -15,7 +15,7 @@
 
 import type { SessionEvent, SessionHeader } from '@deepseek-ai/dsh-session'
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     /**
      * The session's agent preset was chosen after creation, while the session