feat(web-ui): add pinned sessions and live monitor in Chat (#118)

* feat: add single-page live session monitor and chat pinning

* fix: restore full test green after main merge

* fix: use Array.from instead of Set spread for ts-node compatibility

[...new Set()] requires downlevelIteration which isn't enabled in
ts-node dev mode, causing sonic-boom crash on startup.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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Co-authored-by: ekko <fqsy1416@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/server/src/routes/hermes/sessions.ts

@@ -3,6 +3,8 @@ import * as ctrl from '../../controllers/hermes/sessions'
 
 export const sessionRoutes = new Router()
 
+sessionRoutes.get('/api/hermes/sessions/conversations', ctrl.listConversations)
+sessionRoutes.get('/api/hermes/sessions/conversations/:id/messages', ctrl.getConversationMessages)
 sessionRoutes.get('/api/hermes/sessions', ctrl.list)
 sessionRoutes.get('/api/hermes/sessions/:id', ctrl.get)
 sessionRoutes.delete('/api/hermes/sessions/:id', ctrl.remove)