v2.3.0-sampling-params-ask-user: agent sampling params, ask_user_input in CoderPane, UX polish

Add top_p/top_k/min_p/presence_penalty to AGENTS.md frontmatter and thread
through inference (agents.ts parser → Agent type → stream-phase → sentinel
summaries). Null means omit from request body, preserving provider defaults.

Wire ask_user_input interactive card into both BooCoder frontends: the
CoderPane in BooChat's SPA (CoderMessageList now renders AskUserInputCard
instead of ToolCallLine for ask_user_input tool calls) and the standalone
coder SPA (MessageBubble + new AskUserInputCard + shadcn ui primitives).

Additional fixes: SessionLandingPage uses ChatInput with slash-command
support and lazy chat creation; Session.tsx hydrate-race fix for empty pane
promotion; AgentPicker wider dropdown with line-clamp; ModelPicker min-width;
Textarea converted to forwardRef; Recon agent added to AGENTS.md; codecontext
host port exposed in docker-compose.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/components/Workspace.tsx

@@ -1,5 +1,6 @@
 import { useEffect, useMemo, useState } from 'react';
 import { MessageSquare, Terminal, Code, Clipboard, Plus, X } from 'lucide-react';
+import { api } from '@/api/client';
 import type { Chat, Project, Session, WorkspacePane } from '@/api/types';
 import { MAX_PANES, activePaneChatId, type UseWorkspacePanesResult } from '@/hooks/useWorkspacePanes';
 import type { UseSessionChatsResult } from '@/hooks/useSessionChats';
@@ -386,6 +387,7 @@ export function Workspace({
                   sessionId={sessionId}
                   projectId={projectId}
                   chats={chats}
+                  createChat={() => api.chats.create(sessionId)}
                   onOpenChat={(chatId) => openChatInPane(idx, chatId)}
                   onSend={(content) => void handleLandingSend(idx, content)}
                   onReopenChat={async (chatId) => {