v2.2-paseo-providers: Paseo provider stack + v2.2.1 pane-scoped chat fixes

Ship Paseo-equivalent provider snapshot, AgentComposerBar, ACP dispatch
rewrite with streaming/persist, permission prompts, and agent commands.
Follow-up: pane-scoped chat resolution, CoderMessageList tool timeline,
WS user-delta replace, and inference orphan tool_call stripping.
Archive openspec v2-2; update CHANGELOG and CURRENT.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/web/src/components/NewPaneMenu.tsx

@@ -29,13 +29,13 @@ export function NewPaneMenu({ onAddPane, disabled }: Props) {
       </DropdownMenuTrigger>
       <DropdownMenuContent align="end">
         <DropdownMenuItem onSelect={() => onAddPane('chat')}>
-          <MessageSquare size={14} /> New chat
+          <MessageSquare size={14} /> New BooChat
         </DropdownMenuItem>
         <DropdownMenuItem onSelect={() => onAddPane('terminal')}>
-          <Terminal size={14} /> New terminal
+          <Terminal size={14} /> New BooTerm
         </DropdownMenuItem>
         <DropdownMenuItem onSelect={() => onAddPane('coder')}>
-          <Code size={14} /> New coder
+          <Code size={14} /> New BooCode
         </DropdownMenuItem>
       </DropdownMenuContent>
     </DropdownMenu>