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>

---------

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

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

@@ -1,7 +1,39 @@
 import * as hermesCli from '../../services/hermes/hermes-cli'
+import { getConversationDetail, listConversationSummaries } from '../../services/hermes/conversations'
 import { listSessionSummaries } from '../../services/hermes/sessions-db'
 import { logger } from '../../services/logger'
 
+function parseHumanOnly(value: unknown): boolean {
+  if (typeof value !== 'string') return true
+  return value !== 'false' && value !== '0'
+}
+
+function parseLimit(value: unknown): number | undefined {
+  if (typeof value !== 'string') return undefined
+  const parsed = parseInt(value, 10)
+  return Number.isFinite(parsed) && parsed > 0 ? parsed : undefined
+}
+
+export async function listConversations(ctx: any) {
+  const source = (ctx.query.source as string) || undefined
+  const humanOnly = parseHumanOnly(ctx.query.humanOnly)
+  const limit = parseLimit(ctx.query.limit)
+  const sessions = await listConversationSummaries({ source, humanOnly, limit })
+  ctx.body = { sessions }
+}
+
+export async function getConversationMessages(ctx: any) {
+  const source = (ctx.query.source as string) || undefined
+  const humanOnly = parseHumanOnly(ctx.query.humanOnly)
+  const detail = await getConversationDetail(ctx.params.id, { source, humanOnly })
+  if (!detail) {
+    ctx.status = 404
+    ctx.body = { error: 'Conversation not found' }
+    return
+  }
+  ctx.body = detail
+}
+
 export async function list(ctx: any) {
   const source = (ctx.query.source as string) || undefined
   const limit = ctx.query.limit ? parseInt(ctx.query.limit as string, 10) : undefined