refactor(session): unify event map augmentation entrypoint

packages/interaction/commands/src/index.ts

@@ -131,7 +131,7 @@ class CommandLayer implements ScopeLayer {
   }
 }
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     /**
      * A resolved slash command entered its handler. Log-only (never model

packages/interaction/permission/src/index.ts

@@ -39,7 +39,7 @@ declare module 'cordis' {
   }
 }
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     /**
      * Records the selected preset as durable, log-only user intent. The knob

packages/interaction/user-approval/src/index.ts

@@ -31,7 +31,7 @@ declare module 'cordis' {
   }
 }
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     /**
      * An approval question was put to the answerer chain — log-only audit