chore: 删除未使用的 Sidebar SessionSelector（已移至 Header）

web/src/components/Sidebar/SessionSelector.tsx

@@ -1,78 +0,0 @@
-import { MessageSquare } from 'lucide-react'
-import type { SessionSummary } from '../../types/protocol'
-
-interface SessionSelectorProps {
-  sessions: SessionSummary[]
-  selectedSessionId: string | null
-  onSelectSession: (sessionId: string) => void
-}
-
-export function SessionSelector({
-  sessions,
-  selectedSessionId,
-  onSelectSession,
-}: SessionSelectorProps) {
-  if (sessions.length === 0) {
-    return (
-      <div className="border-b border-[var(--border-color)] px-4 py-2.5">
-        <p className="text-xs text-[var(--text-muted)]">暂无会话</p>
-      </div>
-    )
-  }
-
-  return (
-    <div className="border-b border-[var(--border-color)]">
-      <div className="px-4 py-2 flex items-center justify-between">
-        <span className="text-[10px] font-semibold uppercase tracking-[0.12em] text-[var(--text-muted)]">
-          会话
-        </span>
-        <span className="text-[10px] text-[var(--text-muted)]">{sessions.length}</span>
-      </div>
-      <div className="max-h-40 overflow-y-auto px-2 pb-2">
-        {sessions.map((s) => {
-          const isActive = s.session_id === selectedSessionId
-          return (
-            <button
-              key={s.session_id}
-              onClick={() => onSelectSession(s.session_id)}
-              className={`
-                group relative w-full flex items-center gap-2.5 px-2 py-2 rounded-lg text-left
-                transition-all duration-150
-                ${isActive
-                  ? 'bg-[var(--accent-cyan)]/10'
-                  : 'hover:bg-[var(--overlay-hover)]'
-                }
-              `}
-            >
-              {/* Left accent bar */}
-              <div
-                className={`
-                  absolute left-0 top-1/2 -translate-y-1/2 w-0.5 h-4 rounded-r-full
-                  transition-all duration-200
-                  ${isActive ? 'bg-[var(--accent-cyan)]' : 'bg-transparent'}
-                `}
-              />
-              <MessageSquare
-                className={`h-3.5 w-3.5 flex-shrink-0 ${
-                  isActive ? 'text-[var(--accent-cyan)]' : 'text-[var(--text-muted)]'
-                }`}
-              />
-              <div className="flex-1 min-w-0">
-                <div
-                  className={`text-xs truncate ${
-                    isActive ? 'text-[var(--text-primary)] font-medium' : 'text-[var(--text-secondary)]'
-                  }`}
-                >
-                  {s.title}
-                </div>
-              </div>
-              <span className="text-[10px] text-[var(--text-muted)] flex-shrink-0">
-                {s.message_count}
-              </span>
-            </button>
-          )
-        })}
-      </div>
-    </div>
-  )
-}