refactor(session): unify event map augmentation entrypoint

packages/session/session-projection-cache/tests/cache.spec.ts

@@ -24,7 +24,7 @@ declare module '@deepseek-ai/dsh-session-projection/types' {
   }
 }
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     'cache-test/mark': { marks: string[] }
   }

packages/session/session-projection/tests/registry.spec.ts

@@ -22,7 +22,7 @@ declare module '@deepseek-ai/dsh-session-projection/types' {
   }
 }
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     'test/mark': { marks: string[] }
   }

packages/session/session-telemetry/tests/telemetry.spec.ts

@@ -17,7 +17,7 @@ import {
   type TelemetryRecord,
 } from '../src/index.ts'
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     /**
      * Test-only merged event proving unknown types flow through unchanged.

packages/session/session-title-llm/src/index.ts

@@ -37,7 +37,7 @@ export interface SessionTitleLlmRequestEventData {
   readonly maxTokens: number
 }
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     /** Log-only pre-dispatch record of one session-title model request. */
     'session/title-llm-request': SessionTitleLlmRequestEventData

packages/session/session-title/src/index.ts

@@ -91,7 +91,7 @@ declare module 'cordis' {
   }
 }
 
-declare module '@deepseek-ai/dsh-session' {
+declare module '@deepseek-ai/dsh-session/types' {
   interface SessionEventMap {
     /**
      * Latest-wins session title snapshot. Log-only: it never enters the model