docs(session-log-export): describe Markdown copy routes

Update the client and Host module descriptions and apply JSDoc to mention the authenticated Markdown copy route alongside ZIP download and feedback. Comment-only change.

packages/session-query/session-log-export/src/client/index.ts

@@ -1,4 +1,4 @@
-/** Browser plugin owning Session export download state and its shared modal. */
+/** Browser plugin owning ZIP download and Markdown copy state, plus feedback controls. */
 
 import type { Context as ClientContext } from '@deepseek-ai/cordis'
 import type { SessionId } from '@deepseek-ai/dsh-session/types'

packages/session-query/session-log-export/src/index.ts

@@ -1,4 +1,4 @@
-/** Session-log download command and Host-owned streaming route. */
+/** Session export command and Host-owned ZIP download and Markdown copy routes. */
 
 import type { Context } from '@deepseek-ai/cordis'
 import type { CommandDefinitionId } from '@deepseek-ai/dsh-commands/brand'
@@ -73,7 +73,7 @@ const REQUESTED: CommandResult = {
 }
 
 /**
- * Register the Web-only `/export` command and authenticated ZIP download route.
+ * Register the `/export` command and authenticated ZIP download and Markdown copy routes.
  * @param ctx - Host context carrying the human-command registry.
  * @param config - resolved compression policy.
  */