feat(fake-llm-server): add initial setup for fake LLM server with TypeScript and Express

- Created package.json for dependencies and scripts
- Added tsconfig.json for TypeScript configuration
- Implemented fake stdio MCP server with basic calculator and environment variable printing tools
- Added shell script to run the fake stdio MCP server
- Updated root tsconfig.json for project references and path mapping

backups/backup-20251218-161645/src/atoms/appAtoms.ts

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+import { atom } from "jotai";
+import type { App, AppOutput, Version } from "@/ipc/ipc_types";
+import type { UserSettings } from "@/lib/schemas";
+
+export const currentAppAtom = atom<App | null>(null);
+export const selectedAppIdAtom = atom<number | null>(null);
+export const appsListAtom = atom<App[]>([]);
+export const appBasePathAtom = atom<string>("");
+export const versionsListAtom = atom<Version[]>([]);
+export const previewModeAtom = atom<
+  "preview" | "code" | "problems" | "configure" | "publish" | "security"
+>("preview");
+export const selectedVersionIdAtom = atom<string | null>(null);
+export const appOutputAtom = atom<AppOutput[]>([]);
+export const appUrlAtom = atom<
+  | { appUrl: string; appId: number; originalUrl: string }
+  | { appUrl: null; appId: null; originalUrl: null }
+>({ appUrl: null, appId: null, originalUrl: null });
+export const userSettingsAtom = atom<UserSettings | null>(null);
+
+// Atom for storing allow-listed environment variables
+export const envVarsAtom = atom<Record<string, string | undefined>>({});
+
+export const previewPanelKeyAtom = atom<number>(0);
+
+export const previewErrorMessageAtom = atom<
+  { message: string; source: "preview-app" | "dyad-app" } | undefined
+>(undefined);

backups/backup-20251218-161645/src/atoms/chatAtoms.ts

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+import type { FileAttachment, Message } from "@/ipc/ipc_types";
+import { atom } from "jotai";
+import type { ChatSummary } from "@/lib/schemas";
+
+// Per-chat atoms implemented with maps keyed by chatId
+export const chatMessagesByIdAtom = atom<Map<number, Message[]>>(new Map());
+export const chatErrorByIdAtom = atom<Map<number, string | null>>(new Map());
+
+// Atom to hold the currently selected chat ID
+export const selectedChatIdAtom = atom<number | null>(null);
+
+export const isStreamingByIdAtom = atom<Map<number, boolean>>(new Map());
+export const chatInputValueAtom = atom<string>("");
+export const homeChatInputValueAtom = atom<string>("");
+
+// Atoms for chat list management
+export const chatsAtom = atom<ChatSummary[]>([]);
+export const chatsLoadingAtom = atom<boolean>(false);
+
+// Used for scrolling to the bottom of the chat messages (per chat)
+export const chatStreamCountByIdAtom = atom<Map<number, number>>(new Map());
+export const recentStreamChatIdsAtom = atom<Set<number>>(new Set<number>());
+
+export const attachmentsAtom = atom<FileAttachment[]>([]);

backups/backup-20251218-161645/src/atoms/localModelsAtoms.ts

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+import { atom } from "jotai";
+import { type LocalModel } from "@/ipc/ipc_types";
+
+export const localModelsAtom = atom<LocalModel[]>([]);
+export const localModelsLoadingAtom = atom<boolean>(false);
+export const localModelsErrorAtom = atom<Error | null>(null);
+
+export const lmStudioModelsAtom = atom<LocalModel[]>([]);
+export const lmStudioModelsLoadingAtom = atom<boolean>(false);
+export const lmStudioModelsErrorAtom = atom<Error | null>(null);

backups/backup-20251218-161645/src/atoms/previewAtoms.ts

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+import { ComponentSelection, VisualEditingChange } from "@/ipc/ipc_types";
+import { atom } from "jotai";
+
+export const selectedComponentsPreviewAtom = atom<ComponentSelection[]>([]);
+
+export const visualEditingSelectedComponentAtom =
+  atom<ComponentSelection | null>(null);
+
+export const currentComponentCoordinatesAtom = atom<{
+  top: number;
+  left: number;
+  width: number;
+  height: number;
+} | null>(null);
+
+export const previewIframeRefAtom = atom<HTMLIFrameElement | null>(null);
+
+export const annotatorModeAtom = atom<boolean>(false);
+
+export const screenshotDataUrlAtom = atom<string | null>(null);
+export const pendingVisualChangesAtom = atom<Map<string, VisualEditingChange>>(
+  new Map(),
+);

backups/backup-20251218-161645/src/atoms/proposalAtoms.ts

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+import { atom } from "jotai";
+import type { ProposalResult } from "@/lib/schemas";
+
+export const proposalResultAtom = atom<ProposalResult | null>(null);

backups/backup-20251218-161645/src/atoms/supabaseAtoms.ts

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+import { atom } from "jotai";
+import { SupabaseBranch } from "@/ipc/ipc_types";
+
+// Define atom for storing the list of Supabase projects
+export const supabaseProjectsAtom = atom<any[]>([]);
+export const supabaseBranchesAtom = atom<SupabaseBranch[]>([]);
+
+// Define atom for tracking loading state
+export const supabaseLoadingAtom = atom<boolean>(false);
+
+// Define atom for storing any error that occurs during loading
+export const supabaseErrorAtom = atom<Error | null>(null);
+
+// Define atom for storing the currently selected Supabase project
+export const selectedSupabaseProjectAtom = atom<string | null>(null);

backups/backup-20251218-161645/src/atoms/uiAtoms.ts

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+import { atom } from "jotai";
+
+// Atom to track if any dropdown is currently open in the UI
+export const dropdownOpenAtom = atom<boolean>(false);

backups/backup-20251218-161645/src/atoms/viewAtoms.ts

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+import { atom } from "jotai";
+
+export const isPreviewOpenAtom = atom(true);
+export const selectedFileAtom = atom<{
+  path: string;
+} | null>(null);
+export const activeSettingsSectionAtom = atom<string | null>(
+  "general-settings",
+);