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{\n  type CallToolResult,\n  type JsonObject,\n  type JsonRpcMessage,\n  type JsonRpcRequest,\n  type JsonRpcId,\n  type RegisteredTool,\n  type ServerCapabilities,\n  type ServerInfo,\n  type ToolDefinition,\n  type ToolHandler,\n  JSONRPC_INTERNAL_ERROR,\n  JSONRPC_INVALID_PARAMS,\n  JSONRPC_METHOD_NOT_FOUND,\n  MCP_PROTOCOL_VERSION,\n} from \"./types\";\nimport { ToolRegistry } from \"./tool-host\";\n\nexport type McpServerOptions = {\n  info: ServerInfo;\n  /** Defaults to { tools: { listChanged: true } } */\n  capabilities?: ServerCapabilities;\n  /** Free-text instructions surfaced to clients during initialize. */\n  instructions?: string;\n  /**\n   * The protocol revisions this server speaks, NEWEST FIRST.\n   *\n   * `initialize` echoes the client's requested revision when it is in this\n   * list, and answers the first entry otherwise — the spec's rule, which leaves\n   * the client to decide whether it can live with the answer.\n   *\n   * Defaults to `[MCP_PROTOCOL_VERSION]`: one revision, answered whatever the\n   * client asks, which is exactly what this server did before the option\n   * existed. Only list a revision the tools you register are correct under.\n   */\n  protocolVersions?: readonly string[];\n};\n\nexport type Transport = {\n  /** Called by the server when it has a message to deliver to the client. */\n  send: (message: JsonRpcMessage) => void;\n  /** Called by the server when it's torn down so the transport can clean up. */\n  close?: () => void;\n};\n\n/**\n * MicroMcpServer — protocol-level MCP server, transport-agnostic.\n *\n * Use it like:\n *\n *   const server = new MicroMcpServer({ info: { name: \"session\", version: \"0.1\" } });\n *   server.registerTool({ name: \"...\", inputSchema: { type: \"object\" } }, async (args) => ({...}));\n *   const transport = new InProcessTransport();\n *   server.attach(transport);\n *   transport.deliver({ ... }); // client → server frames\n *\n * The same server can serve multiple transports (e.g. an in-process agent\n * AND a relayed external client) by attaching each one.\n */\nexport class MicroMcpServer extends ToolRegistry {\n  private transports = new Set<Transport>();\n  /**\n   * Transports owed a `tools/list_changed` at the end of this tick. Empty when\n   * none is scheduled. See {@link scheduleListChangedNotification}.\n   */\n  private listChangedOwed = new Set<Transport>();\n\n  readonly info: ServerInfo;\n  readonly capabilities: ServerCapabilities;\n  readonly instructions?: string;\n  readonly protocolVersions: readonly string[];\n\n  constructor(options: McpServerOptions) {\n    super();\n    this.info = options.info;\n    this.capabilities = options.capabilities ?? { tools: { listChanged: true } };\n    this.instructions = options.instructions;\n    if (options.protocolVersions && options.protocolVersions.length === 0) {\n      // No answer exists for a client's initialize. Fail here, next to the\n      // mistake, rather than in a handshake nobody is watching.\n      throw new Error(\"MicroMcpServer: protocolVersions is empty — a server must speak at least one protocol revision.\");\n    }\n    this.protocolVersions = options.protocolVersions ? [...options.protocolVersions] : [MCP_PROTOCOL_VERSION];\n  }\n\n  attach(transport: Transport): () => void {\n    this.transports.add(transport);\n    return () => this.detach(transport);\n  }\n\n  detach(transport: Transport): void {\n    if (this.transports.delete(transport)) {\n      transport.close?.();\n    }\n  }\n\n  unregisterTool(name: string): void {\n    if (this.tools.delete(name)) {\n      this.scheduleListChangedNotification();\n    }\n  }\n\n  protected onToolsChanged(): void {\n    this.scheduleListChangedNotification();\n  }\n\n  /**\n   * Receive a JSON-RPC frame from a client (called by the transport).\n   * The transport is responsible for sending the response back.\n   */\n  async receive(transport: Transport, message: JsonRpcMessage): Promise<void> {\n    if (!(\"method\" in message)) return; // It's a response, not a request — ignore.\n\n    const isNotification = !(\"id\" in message);\n    if (isNotification) {\n      // Notifications are fire-and-forget. We ignore unknown methods.\n      return;\n    }\n\n    const request = message as JsonRpcRequest;\n    try {\n      const result = await this.handle(request, transport);\n      transport.send({ jsonrpc: \"2.0\", id: request.id, result });\n    } catch (err) {\n      transport.send({\n        jsonrpc: \"2.0\",\n        id: request.id,\n        error: this.toRpcError(err),\n      });\n    }\n  }\n\n  private async handle(request: JsonRpcRequest, transport: Transport): Promise<any> {\n    const { method, params } = request;\n    switch (method) {\n      case \"initialize\":\n        return {\n          protocolVersion: this.negotiate(params?.protocolVersion),\n          capabilities: this.capabilities,\n          serverInfo: this.info,\n          ...(this.instructions ? { instructions: this.instructions } : {}),\n        };\n\n      case \"tools/list\":\n        return { tools: this.listTools() };\n\n      case \"tools/call\": {\n        const name = params?.name;\n        const args = (params?.arguments ?? {}) as JsonObject;\n        if (typeof name !== \"string\") {\n          throw rpcError(JSONRPC_INVALID_PARAMS, \"tools/call requires `name`\");\n        }\n        const tool = this.tools.get(name);\n        if (!tool) {\n          throw rpcError(JSONRPC_METHOD_NOT_FOUND, this.missingToolMessage(name));\n        }\n        const result = await tool.handler(args, { transport });\n        return result satisfies CallToolResult;\n      }\n\n      case \"ping\":\n        return {};\n\n      default:\n        throw rpcError(JSONRPC_METHOD_NOT_FOUND, `Unsupported method: ${method}`);\n    }\n  }\n\n  /** The revision to answer `initialize` with: the one asked for if spoken, else the newest. */\n  private negotiate(requested: unknown): string {\n    return typeof requested === \"string\" && this.protocolVersions.includes(requested)\n      ? requested\n      : this.protocolVersions[0];\n  }\n\n  /**\n   * Tell the transports that SAW the old tool list that it changed.\n   *\n   * Changes in one tick coalesce into one notification. The recipients are the\n   * transports attached at the moment of a change, not at the moment the\n   * notification goes out: a transport attached afterwards never had the old\n   * list, so \"your list is stale\" is noise to it — and on stdio, where a host\n   * builds the server and attaches stdin/stdout in the same tick, it was the\n   * first frame a client received, before it had even sent `initialize`.\n   */\n  private scheduleListChangedNotification(): void {\n    if (this.transports.size === 0) return;\n    const scheduled = this.listChangedOwed.size > 0;\n    for (const t of this.transports) this.listChangedOwed.add(t);\n    if (scheduled) return;\n    queueMicrotask(() => {\n      const owed = this.listChangedOwed;\n      this.listChangedOwed = new Set();\n      for (const t of owed) {\n        // Detached since the change: it is not listening any more.\n        if (this.transports.has(t)) t.send({ jsonrpc: \"2.0\", method: \"notifications/tools/list_changed\" });\n      }\n    });\n  }\n\n  /** Send an application notification to every client, or one attached transport. */\n  notify(message: JsonRpcMessage, transport?: Transport): void {\n    if (transport) transport.send(message);\n    else this.broadcast(message);\n  }\n\n  private broadcast(message: JsonRpcMessage): void {\n    for (const t of this.transports) t.send(message);\n  }\n\n  private toRpcError(err: unknown): { code: number; message: string; data?: any } {\n    if (err && typeof err === \"object\" && \"code\" in err && \"message\" in err) {\n      return err as any;\n    }\n    return {\n      code: JSONRPC_INTERNAL_ERROR,\n      message: err instanceof Error ? err.message : String(err),\n    };\n  }\n}\n\nexport function rpcError(code: number, message: string, data?: any) {\n  return { code, message, ...(data !== undefined ? { data } : {}) };\n}\n\n/**\n * Helper to build a CallToolResult from a string or structured value.\n */\nexport function textResult(text: string, structured?: any): CallToolResult {\n  return {\n    content: [{ type: \"text\", text }],\n    ...(structured !== undefined ? { structuredContent: structured } : {}),\n  };\n}\n\nexport function errorResult(text: string): CallToolResult {\n  return { content: [{ type: \"text\", text }], isError: true };\n}\n\n// Internal helper so the JsonRpcId import isn't dropped by tsup\ntype _KeepIdImport = JsonRpcId;\n","import type { CallToolResult } from \"../mcp/types\";\nimport { emitActivity } from \"./registry\";\nimport type { AgentTarget } from \"./types\";\n\nexport type ActivityAgent = { id: string; name?: string; color?: string };\n\nexport type ActivityResolverContext<TArgs = Record<string, unknown>> = {\n  /** Tool name as registered. */\n  toolName: string;\n  /** Arguments the tool was called with. */\n  args: TArgs;\n  /** The CallToolResult the underlying handler produced. */\n  result: CallToolResult;\n};\n\n/**\n * Resolves an `AgentTarget` for an executed tool. Bridges declare one of\n * these per registration so the wrapper knows which surface / element /\n * screen the activity belongs to.\n *\n * The resolver runs AFTER the tool handler so it can inspect the result\n * (e.g. read a newly-created item id from `structuredContent`).\n */\nexport type ActivityTargetResolver<TArgs = Record<string, unknown>> = (\n  ctx: ActivityResolverContext<TArgs>,\n) => AgentTarget | null;\n\nexport type ToolHandler<TArgs = Record<string, unknown>> = (\n  args: TArgs,\n) => Promise<CallToolResult> | CallToolResult;\n\n/**\n * wrapToolWithActivity — decorate a bridge tool handler so every successful\n * call emits an `AgentActivityEvent`. Returns a new handler with the same shape.\n *\n * Usage in a bridge:\n *\n *   server.registerTool(\n *     definition,\n *     wrapToolWithActivity(\n *       handler,\n *       { agent, kind: \"whiteboard\", resolveTarget: ({ args }) => ({\n *           kind: \"whiteboard\", elementId: args.id as string,\n *         }) },\n *     ),\n *   );\n */\nexport function wrapToolWithActivity<TArgs = Record<string, unknown>>(\n  handler: ToolHandler<TArgs>,\n  options: {\n    toolName: string;\n    agent: ActivityAgent;\n    /** Optional fancy-screens screen id this bridge is scoped to. */\n    screenId?: string;\n    /** Default target kind if the resolver returns one without `kind`. */\n    kind: AgentTarget[\"kind\"];\n    /** Per-call resolver. Return `null` to skip emitting (e.g. for read-only tools). */\n    resolveTarget?: ActivityTargetResolver<TArgs>;\n    /** Optional ttl override. */\n    ttlMs?: number;\n    /**\n     * Build the `meta` broadcast to all relay peers. Defaults to the tool's full\n     * `structuredContent`. Override to REDACT sensitive fields before fan-out —\n     * e.g. the terminal bridge strips raw command/keystroke bytes so a command\n     * line (or its secrets) is never broadcast verbatim to every peer.\n     */\n    buildMeta?: (result: CallToolResult) => Record<string, unknown> | undefined;\n  },\n): ToolHandler<TArgs> {\n  return async (args) => {\n    const result = await handler(args);\n    if (result.isError) return result;\n\n    let target: AgentTarget | null;\n    if (options.resolveTarget) {\n      target = options.resolveTarget({ toolName: options.toolName, args, result });\n    } else {\n      target = { kind: options.kind, screenId: options.screenId };\n    }\n    if (!target) return result;\n\n    emitActivity({\n      agentId: options.agent.id,\n      agentName: options.agent.name,\n      agentColor: options.agent.color,\n      target: { ...target, kind: target.kind ?? options.kind, screenId: target.screenId ?? options.screenId },\n      action: options.toolName,\n      timestamp: Date.now(),\n      meta: options.buildMeta ? options.buildMeta(result) : extractMeta(result),\n      ttlMs: options.ttlMs,\n    });\n    return result;\n  };\n}\n\nfunction extractMeta(result: CallToolResult): Record<string, unknown> | undefined {\n  const sc = result.structuredContent;\n  if (sc && typeof sc === \"object\" && !Array.isArray(sc)) {\n    return sc as Record<string, unknown>;\n  }\n  return undefined;\n}\n","import { textResult, errorResult } from \"../mcp/server\";\nimport type { ToolHost } from \"../mcp/tool-host\";\nimport { readHistory, redoOne, undoOne } from \"./undo-stack\";\n\nexport type UndoToolsOptions = {\n  /** Default agent id when the caller doesn't pass one. */\n  defaultAgentId?: string;\n};\n\n/**\n * Idempotent tracker so multiple bridges on the same server only register\n * agent_undo / agent_redo / agent_history once.\n */\nconst installedHosts = new WeakSet<ToolHost>();\n\n/**\n * The one owner every copy of the undo tools registers under. They are SHARED\n * on purpose — every bridge ensures them, and a host may also call\n * `registerUndoTools` itself — so all of those are the same registrant, and a\n * second registration replaces the first instead of being refused as a\n * collision. Anything else claiming `agent_undo` is still refused.\n */\nconst UNDO_TOOLS_OWNER = \"agent-undo\";\n\n/**\n * ensureUndoToolsRegistered — bridges call this on construction. Safe to\n * call repeatedly with the same server; subsequent calls are no-ops.\n */\nexport function ensureUndoToolsRegistered(host: ToolHost, options: UndoToolsOptions = {}): void {\n  if (installedHosts.has(host)) return;\n  installedHosts.add(host);\n  registerUndoTools(host, options);\n}\n\n/**\n * registerUndoTools — add agent_undo / agent_redo / agent_history to the\n * server. Returns a disposer that unregisters all three.\n */\nexport function registerUndoTools(host: ToolHost, options: UndoToolsOptions = {}): () => void {\n  const defaultAgent = options.defaultAgentId ?? \"agent\";\n  const disposers: Array<() => void> = [];\n  const agentOf = (args: any): string =>\n    typeof args?.agentId === \"string\" ? args.agentId : defaultAgent;\n\n  disposers.push(\n    host.registerTool(\n      {\n        name: \"agent_undo\",\n        description: \"Undo the most recent action on the agent's stack. Optional agentId targets a specific agent.\",\n        inputSchema: {\n          type: \"object\",\n          properties: { agentId: { type: \"string\" } },\n          additionalProperties: false,\n        },\n      },\n      async (args) => {\n        const entry = await undoOne(agentOf(args));\n        if (!entry) return errorResult(\"Nothing to undo.\");\n        return textResult(`Undid: ${entry.label}`, { entry: serialize(entry) });\n      },\n      { owner: UNDO_TOOLS_OWNER },\n    ),\n  );\n\n  disposers.push(\n    host.registerTool(\n      {\n        name: \"agent_redo\",\n        description: \"Redo the most recently undone action.\",\n        inputSchema: {\n          type: \"object\",\n          properties: { agentId: { type: \"string\" } },\n          additionalProperties: false,\n        },\n      },\n      async (args) => {\n        const entry = await redoOne(agentOf(args));\n        if (!entry) return errorResult(\"Nothing to redo.\");\n        return textResult(`Redid: ${entry.label}`, { entry: serialize(entry) });\n      },\n      { owner: UNDO_TOOLS_OWNER },\n    ),\n  );\n\n  disposers.push(\n    host.registerTool(\n      {\n        name: \"agent_history\",\n        description: \"List the agent's undo stack (oldest first). Useful for understanding what's reversible.\",\n        inputSchema: {\n          type: \"object\",\n          properties: { agentId: { type: \"string\" } },\n          additionalProperties: false,\n        },\n      },\n      async (args) => {\n        const history = readHistory(agentOf(args)).map(serialize);\n        const text = history.map((e) => `${new Date(e.timestamp).toISOString()} ${e.bridgeId} ${e.action}: ${e.label}`).join(\"\\n\");\n        return textResult(text || \"(empty)\", history);\n      },\n      { owner: UNDO_TOOLS_OWNER },\n    ),\n  );\n\n  return () => disposers.forEach((d) => d());\n}\n\nfunction serialize(entry: import(\"./undo-stack\").UndoEntry) {\n  return {\n    timestamp: entry.timestamp,\n    bridgeId: entry.bridgeId,\n    action: entry.action,\n    label: entry.label,\n  };\n}\n","/**\n * registerDocBridge — a GENERIC MCP bridge over a `@particle-academy/fancy-doc-commons`\n * `DocTree`. Give it an adapter (`{ get, set }`) and it generates, from the shared\n * op-spine, a full Human+ surface: uniform read tools + the canonical node op tools\n * (add / update / remove / move) under one verb lexicon, with **undo derived from\n * the reducer**, agent-activity broadcasts, unconditional `agent_undo/redo/history`,\n * and an optional **staged-write** (confirm / reject) channel — replacing the ~500-line\n * bespoke bridges (whiteboard/flow/artboard/…) with one builder. A surface adds its\n * domain ops (e.g. cms `set_style`) via `opTools` + a matching reducer.\n */\nimport { textResult, errorResult } from \"../mcp/server\";\nimport type { ToolHost } from \"../mcp/tool-host\";\nimport type { JsonObject } from \"../mcp/types\";\nimport type { Bridge } from \"./types\";\nimport { wrapToolWithActivity } from \"../presence/wrap-tool-with-activity\";\nimport type { AgentTarget } from \"../presence/types\";\nimport { pushUndoEntry } from \"../undo/undo-stack\";\nimport { ensureUndoToolsRegistered } from \"../undo/undo-tools\";\nimport {\n  treeReducer,\n  childrenOf,\n  descendantsOf,\n  appendOrder,\n  autoApply,\n  type DocTree,\n  type DocNode,\n  type TreeOp,\n  type DocReducer,\n  type StagePolicy,\n} from \"@particle-academy/fancy-doc-commons\";\n\nconst DEFAULT_AGENT = { id: \"agent\", name: \"Agent\", color: \"#a855f7\" };\n\n/** Host-provided access to the document tree. */\nexport interface DocAdapter<N extends DocNode> {\n  /** Read the current tree. */\n  get(): DocTree<N>;\n  /** Replace the tree — host wires this to its `onChange` / `setState`. */\n  set(next: DocTree<N>): void;\n  /** Optional fancy-screens screen id, for presence scoping. */\n  screenId?: string;\n  /** Mint a fresh, unique node id. Default: `<surface>-<n>`. */\n  newId?(): string;\n}\n\n/**\n * A domain op tool beyond the built-in add/update/remove/move — lets a surface\n * expose its own ops (e.g. cms `set_style`) through the same undo + activity path.\n */\nexport interface DocOpTool<N extends DocNode, TOp> {\n  /** Verb, prefixed with the surface (e.g. `set_style` → `cms_set_style`). */\n  verb: string;\n  description: string;\n  properties: Record<string, unknown>;\n  required: string[];\n  /** Build the op from the args (or return `{ error }`). */\n  build(args: JsonObject, tree: DocTree<N>): TOp | { error: string };\n  /** Node id this op targets (for the activity target + undo label). */\n  targetId?(args: JsonObject): string | undefined;\n}\n\nexport interface DocBridgeOptions<N extends DocNode, TOp = TreeOp<N>> {\n  adapter: DocAdapter<N>;\n  /** Tool-name prefix + activity kind (e.g. `\"cms\"` → `cms_add`, kind `\"cms\"`). */\n  surface: string;\n  agent?: { id: string; name?: string; color?: string };\n  /** Reducer for reduce + invert. Default: the substrate `treeReducer<N>()`. */\n  reducer?: DocReducer<DocTree<N>, TOp>;\n  /** Build a full node from the core fields + props (fill surface defaults, e.g. `style`). */\n  makeNode?: (core: { id: string; type: string; parent: string | null; order: string }, props: Record<string, unknown>) => N;\n  /** Domain op tools beyond the built-ins. */\n  opTools?: DocOpTool<N, TOp>[];\n  /** Decide auto-apply vs. confirm per op. Default: everything auto-applies. */\n  stagePolicy?: StagePolicy<TOp>;\n  /** Fired when an op is staged pending human confirmation. */\n  onPending?: (staged: { id: string; op: TOp; label: string }) => void;\n  /** Summarize a node for describe/list. Default: id/type/parent + prop keys. */\n  describeNode?: (node: N) => Record<string, unknown>;\n}\n\n/** Register the generic doc-surface bridge. Returns a {@link Bridge}. */\nexport function registerDocBridge<N extends DocNode, TOp = TreeOp<N>>(\n  host: ToolHost,\n  options: DocBridgeOptions<N, TOp>,\n): Bridge {\n  const { adapter, surface } = options;\n  const agent = { ...DEFAULT_AGENT, ...(options.agent ?? {}) };\n  const reducer = (options.reducer ?? (treeReducer<N>() as unknown as DocReducer<DocTree<N>, TOp>));\n  const stage = options.stagePolicy ?? (autoApply as StagePolicy<TOp>);\n  const makeNode =\n    options.makeNode ?? (({ id, type, parent, order }, props) => ({ id, type, parent, order, props }) as N);\n  const describeNode =\n    options.describeNode ?? ((n: N) => ({ id: n.id, type: n.type, parent: n.parent, props: Object.keys(n.props ?? {}) }));\n  const disposers: Array<() => void> = [];\n  // The bridge id is also its registrant identity on the host: the same bridge\n  // may re-register (a remount), a different one claiming a name is refused.\n  const bridgeId = surface;\n\n  // agent_undo / agent_redo / agent_history — always present (undo derives from\n  // the reducer, so every doc surface gets working undo for free).\n  ensureUndoToolsRegistered(host, { defaultAgentId: agent.id });\n\n  let idSeq = 0;\n  // The counter restarts with the bridge, so on a tree loaded from elsewhere\n  // `surface-1` may well be taken. Skip past anything that already exists\n  // rather than minting an id that silently overwrites a node.\n  const mintId = () => {\n    if (adapter.newId) return adapter.newId();\n    const taken = adapter.get().nodes;\n    let id: string;\n    do id = `${surface}-${(idSeq += 1)}`;\n    while (taken[id]);\n    return id;\n  };\n  const target = (elementId?: string): AgentTarget => ({ kind: surface, screenId: adapter.screenId, elementId });\n\n  // Staged ops awaiting confirmation.\n  const pending = new Map<string, { op: TOp; label: string; targetId?: string }>();\n\n  /** Apply an op immediately: reduce → set → push a snapshot-based undo entry. */\n  function commit(op: TOp, label: string, targetId?: string): Record<string, unknown> {\n    const prev = adapter.get();\n    const next = reducer.reduce(prev, op);\n    adapter.set(next);\n    pushUndoEntry(agent.id, {\n      timestamp: Date.now(),\n      bridgeId: surface,\n      action: label,\n      label,\n      undo: () => adapter.set(prev),\n      redo: () => adapter.set(next),\n    });\n    return { ok: true, id: targetId };\n  }\n\n  /**\n   * Auto-apply, or stage for confirmation per the stage policy.\n   *\n   * The staged case reports the pending id under its OWN key. Returning it as\n   * `id` — as this used to — collided with the node id every mutation already\n   * reports, so `update`/`remove`/`move` overwrote it and left the agent holding\n   * a node id that `confirm` does not accept. The staged write was unconfirmable\n   * for three of the four canonical ops, and looked fine from the outside.\n   */\n  function submit(op: TOp, label: string, targetId?: string): { staged: boolean; id?: string; pendingId?: string } {\n    if (stage(op) === \"confirm\") {\n      const pendingId = `${surface}-pending-${(idSeq += 1)}`;\n      pending.set(pendingId, { op, label, targetId });\n      options.onPending?.({ id: pendingId, op, label });\n      return { staged: true, id: targetId, pendingId };\n    }\n    commit(op, label, targetId);\n    return { staged: false, id: targetId };\n  }\n\n  const reg = (\n    verb: string,\n    description: string,\n    properties: Record<string, unknown>,\n    required: string[],\n    handler: (args: JsonObject) => Record<string, unknown> | Promise<Record<string, unknown>>,\n    isMutation: boolean,\n    resolveTarget?: (args: JsonObject, result: Record<string, unknown>) => AgentTarget | null,\n  ): void => {\n    const name = `${surface}_${verb}`;\n    const wrapped = async (args: JsonObject) => {\n      try {\n        // `_text` is the human-facing line; the rest is structuredContent.\n        const { _text, ...structured } = await handler(args);\n        return textResult(typeof _text === \"string\" ? _text : name, structured);\n      } catch (e) {\n        return errorResult(e instanceof Error ? e.message : String(e));\n      }\n    };\n    const final = isMutation\n      ? wrapToolWithActivity(wrapped, {\n          toolName: name,\n          agent,\n          kind: surface,\n          screenId: adapter.screenId,\n          resolveTarget: ({ args, result }) => {\n            if ((result.structuredContent as JsonObject | undefined)?.staged) return null;\n            return resolveTarget?.(args, (result.structuredContent as JsonObject) ?? {}) ?? target();\n          },\n        })\n      : wrapped;\n    disposers.push(\n      host.registerTool(\n        { name, description, inputSchema: { type: \"object\", properties: properties as never, required, additionalProperties: false } },\n        final as never,\n        { owner: bridgeId },\n      ),\n    );\n  };\n\n  // ── Read tools ──────────────────────────────────────────────────────────\n  reg(\n    \"describe\",\n    `Summarize the ${surface} document: node count, roots, and the active surface. Call before reading or writing.`,\n    {},\n    [],\n    () => {\n      const tree = adapter.get();\n      const ids = Object.keys(tree.nodes);\n      return { nodeCount: ids.length, roots: childrenOf(tree, null).map((n) => n.id), _text: `${ids.length} nodes` };\n    },\n    false,\n  );\n  reg(\n    \"get\",\n    `Get the whole ${surface} document tree as JSON.`,\n    {},\n    [],\n    () => ({ tree: adapter.get(), _text: \"full tree\" }),\n    false,\n  );\n  reg(\n    \"list\",\n    \"List nodes (optionally the children of `parent`), in order.\",\n    { parent: { type: [\"string\", \"null\"], description: \"Parent id, or null/omitted for roots.\" } },\n    [],\n    (args) => {\n      const tree = adapter.get();\n      const parent = typeof args.parent === \"string\" ? args.parent : null;\n      return { nodes: childrenOf(tree, parent).map(describeNode), _text: `children of ${parent ?? \"root\"}` };\n    },\n    false,\n  );\n  reg(\n    \"get_node\",\n    \"Get one node by id.\",\n    { id: { type: \"string\" } },\n    [\"id\"],\n    (args) => {\n      const node = adapter.get().nodes[String(args.id)];\n      if (!node) throw new Error(`No node ${args.id}`);\n      return { node, _text: `node ${node.id}` };\n    },\n    false,\n  );\n\n  // ── Canonical op tools ──────────────────────────────────────────────────\n  reg(\n    \"add\",\n    \"Insert a node. Returns its id. Appends under `parent` (or roots) unless `order` is given.\",\n    {\n      type: { type: \"string\", description: \"Node type discriminant.\" },\n      parent: { type: [\"string\", \"null\"], description: \"Parent id, or null for a root.\" },\n      props: { type: \"object\", description: \"JSON props bag.\" },\n      order: { type: \"string\", description: \"Fractional order key (default: append).\" },\n      id: {\n        type: \"string\",\n        description:\n          \"Id for the new node. Supply a meaningful one if you intend to address this node later; omitted means one is minted for you. Must not already exist.\",\n      },\n    },\n    [\"type\"],\n    (args) => {\n      const tree = adapter.get();\n      const parent = typeof args.parent === \"string\" ? args.parent : null;\n      // An agent that names the node names the handle it will use afterwards.\n      // Minted ids are addressable too, just less memorable.\n      const requested = typeof args.id === \"string\" ? args.id : undefined;\n      if (requested !== undefined && tree.nodes[requested]) {\n        throw new Error(`Node ${requested} already exists — pick a different id or update it instead`);\n      }\n      const id = requested ?? mintId();\n      const order = typeof args.order === \"string\" ? args.order : appendOrder(tree, parent);\n      const props = (args.props && typeof args.props === \"object\" ? args.props : {}) as Record<string, unknown>;\n      const node = makeNode({ id, type: String(args.type), parent, order }, props);\n      const res = submit({ t: \"insert\", node } as unknown as TOp, `add ${args.type} ${id}`, id);\n      return { ...res, _text: res.staged ? `staged add ${id} — confirm ${res.pendingId}` : `added ${id}` };\n    },\n    true,\n    (_args, result) => target(result.id as string | undefined),\n  );\n  reg(\n    \"update\",\n    \"Merge a props patch into a node.\",\n    { id: { type: \"string\" }, patch: { type: \"object\" } },\n    [\"id\", \"patch\"],\n    (args) => {\n      const id = String(args.id);\n      if (!adapter.get().nodes[id]) throw new Error(`No node ${id}`);\n      const patch = (args.patch && typeof args.patch === \"object\" ? args.patch : {}) as Record<string, unknown>;\n      const res = submit({ t: \"set_props\", id, patch } as unknown as TOp, `update ${id}`, id);\n      return { ...res, id, _text: res.staged ? `staged update ${id} — confirm ${res.pendingId}` : `updated ${id}` };\n    },\n    true,\n    (args) => target(String(args.id)),\n  );\n  reg(\n    \"remove\",\n    \"Remove a node and its subtree.\",\n    { id: { type: \"string\" } },\n    [\"id\"],\n    (args) => {\n      const id = String(args.id);\n      const tree = adapter.get();\n      if (!tree.nodes[id]) throw new Error(`No node ${id}`);\n      const count = descendantsOf(tree, id).length + 1;\n      const res = submit({ t: \"remove\", id } as unknown as TOp, `remove ${id} (${count} node${count === 1 ? \"\" : \"s\"})`, id);\n      return { ...res, id, removed: count, _text: res.staged ? `staged remove ${id} — confirm ${res.pendingId}` : `removed ${id}` };\n    },\n    true,\n    (args) => target(String(args.id)),\n  );\n  reg(\n    \"move\",\n    \"Reparent + reorder a node.\",\n    { id: { type: \"string\" }, parent: { type: [\"string\", \"null\"] }, order: { type: \"string\", description: \"Fractional order key (default: append under the new parent).\" } },\n    [\"id\"],\n    (args) => {\n      const id = String(args.id);\n      const tree = adapter.get();\n      if (!tree.nodes[id]) throw new Error(`No node ${id}`);\n      const parent = args.parent === null ? null : typeof args.parent === \"string\" ? args.parent : tree.nodes[id]!.parent;\n      const order = typeof args.order === \"string\" ? args.order : appendOrder(tree, parent);\n      const res = submit({ t: \"move\", id, parent, order } as unknown as TOp, `move ${id}`, id);\n      return { ...res, id, _text: res.staged ? `staged move ${id} — confirm ${res.pendingId}` : `moved ${id}` };\n    },\n    true,\n    (args) => target(String(args.id)),\n  );\n\n  // ── Domain op tools ─────────────────────────────────────────────────────\n  for (const t of options.opTools ?? []) {\n    reg(\n      t.verb,\n      t.description,\n      t.properties,\n      t.required,\n      (args) => {\n        const built = t.build(args, adapter.get());\n        if (built && typeof built === \"object\" && \"error\" in built) throw new Error((built as { error: string }).error);\n        const tid = t.targetId?.(args);\n        const res = submit(built as TOp, `${t.verb} ${tid ?? \"\"}`.trim(), tid);\n        return { ...res, id: tid, _text: res.staged ? `staged ${t.verb} — confirm ${res.pendingId}` : t.verb };\n      },\n      true,\n      (args) => target(t.targetId?.(args)),\n    );\n  }\n\n  // ── Staged-write confirm / reject ───────────────────────────────────────\n  reg(\n    \"confirm\",\n    \"Apply a staged op. Pass the `pendingId` a staged mutation returned — not the node `id` it also returns.\",\n    { id: { type: \"string\", description: \"The `pendingId` from a staged mutation.\" } },\n    [\"id\"],\n    (args) => {\n      const id = String(args.id);\n      const p = pending.get(id);\n      if (!p) throw new Error(`No pending op ${id}`);\n      pending.delete(id);\n      commit(p.op, p.label, p.targetId);\n      return { ok: true, applied: p.label, id: p.targetId, _text: `applied ${p.label}` };\n    },\n    true,\n    (_args, result) => target(result.id as string | undefined),\n  );\n  reg(\n    \"reject\",\n    \"Discard a staged op. Pass the `pendingId` a staged mutation returned — not the node `id` it also returns.\",\n    { id: { type: \"string\", description: \"The `pendingId` from a staged mutation.\" } },\n    [\"id\"],\n    (args) => {\n      const id = String(args.id);\n      const p = pending.get(id);\n      if (!p) throw new Error(`No pending op ${id}`);\n      pending.delete(id);\n      return { ok: true, rejected: p.label, _text: `rejected ${p.label}` };\n    },\n    false,\n  );\n\n  return {\n    id: bridgeId,\n    title: surface,\n    dispose: () => {\n      for (const d of disposers) d();\n      pending.clear();\n    },\n  };\n}\n","/**\n * registerCmsBridge — the greenfield CMS agent bridge, built entirely on\n * {@link registerDocBridge}. cms had NO bridge before (its op-spine was\n * agent-ready but unwired); this is the §8-decided \"build registerCmsBridge on\n * registerDocBridge BEFORE deprecating ScreenSchema\" step.\n *\n * A CMS page is a `DocTree<StyledNode>` (fancy-doc-commons): the generic bridge\n * supplies `cms_describe/get/list/get_node` + `cms_add/update/remove/move` +\n * undo/activity/staging for free; this layer adds the two domain ops a page\n * needs — `cms_set_style` (per-node base StyleProps) and `cms_set_layout` — and a\n * reducer that handles them alongside the substrate tree ops.\n */\nimport type { ToolHost } from \"../mcp/tool-host\";\nimport type { Bridge } from \"./types\";\nimport { registerDocBridge, type DocAdapter } from \"./doc\";\nimport {\n  treeReducer,\n  type DocReducer,\n  type DocTree,\n  type LayoutMode,\n  type StyledNode,\n  type StyleProps,\n  type TreeOp,\n  type StagePolicy,\n} from \"@particle-academy/fancy-doc-commons\";\n\n/** The CMS op union: the substrate tree ops + per-node style/layout. */\nexport type CmsOp =\n  | TreeOp<StyledNode>\n  | { t: \"set_style\"; id: string; patch: Partial<StyleProps> }\n  | { t: \"set_layout\"; id: string; layout?: LayoutMode };\n\n/** A pure reducer over a `DocTree<StyledNode>` handling tree ops + style/layout. */\nexport function cmsReducer(): DocReducer<DocTree<StyledNode>, CmsOp> {\n  const base = treeReducer<StyledNode>();\n  return {\n    reduce(doc, op) {\n      if (op.t === \"set_style\") {\n        const node = doc.nodes[op.id];\n        if (!node) return doc;\n        return { nodes: { ...doc.nodes, [op.id]: { ...node, style: { ...node.style, base: { ...node.style.base, ...op.patch } } } } };\n      }\n      if (op.t === \"set_layout\") {\n        const node = doc.nodes[op.id];\n        if (!node) return doc;\n        return { nodes: { ...doc.nodes, [op.id]: { ...node, layout: op.layout } } };\n      }\n      return base.reduce(doc, op);\n    },\n    invert(doc, op) {\n      if (op.t === \"set_style\") {\n        const node = doc.nodes[op.id];\n        if (!node) return [];\n        const prev: Partial<StyleProps> = {};\n        for (const k in op.patch) (prev as Record<string, unknown>)[k as keyof StyleProps] = node.style.base[k as keyof StyleProps];\n        return [{ t: \"set_style\", id: op.id, patch: prev }];\n      }\n      if (op.t === \"set_layout\") {\n        const node = doc.nodes[op.id];\n        if (!node) return [];\n        return [{ t: \"set_layout\", id: op.id, layout: node.layout }];\n      }\n      return base.invert(doc, op) as CmsOp[];\n    },\n  };\n}\n\nexport interface CmsBridgeOptions {\n  adapter: DocAdapter<StyledNode>;\n  agent?: { id: string; name?: string; color?: string };\n  /** Auto-apply vs. confirm per op (trust-but-verify). Default: auto. */\n  stagePolicy?: StagePolicy<CmsOp>;\n  onPending?: (staged: { id: string; op: CmsOp; label: string }) => void;\n}\n\n/** Register the CMS bridge (prefix `cms_`) over a `DocTree<StyledNode>`. */\nexport function registerCmsBridge(host: ToolHost, options: CmsBridgeOptions): Bridge {\n  return registerDocBridge<StyledNode, CmsOp>(host, {\n    adapter: options.adapter,\n    surface: \"cms\",\n    agent: options.agent,\n    reducer: cmsReducer(),\n    stagePolicy: options.stagePolicy,\n    onPending: options.onPending,\n    // New nodes get an empty base style so they satisfy StyledNode.\n    makeNode: ({ id, type, parent, order }, props) => ({ id, type, parent, order, props, style: { base: {} } }),\n    describeNode: (n) => ({ id: n.id, type: n.type, parent: n.parent, layout: n.layout }),\n    opTools: [\n      {\n        verb: \"set_style\",\n        description: \"Merge a StyleProps patch into a node's base style (color, background, padding, fontSize, gap, …).\",\n        properties: { id: { type: \"string\" }, patch: { type: \"object\", description: \"Partial StyleProps.\" } },\n        required: [\"id\", \"patch\"],\n        build: (args, tree) => {\n          const id = String(args.id);\n          if (!tree.nodes[id]) return { error: `No node ${id}` };\n          return { t: \"set_style\", id, patch: (args.patch && typeof args.patch === \"object\" ? args.patch : {}) as Partial<StyleProps> };\n        },\n        targetId: (args) => String(args.id),\n      },\n      {\n        verb: \"set_layout\",\n        description: \"Set a container node's layout mode (free | stack | grid).\",\n        properties: { id: { type: \"string\" }, layout: { type: \"string\", enum: [\"free\", \"stack\", \"grid\"] } },\n        required: [\"id\"],\n        build: (args, tree) => {\n          const id = String(args.id);\n          if (!tree.nodes[id]) return { error: `No node ${id}` };\n          return { t: \"set_layout\", id, layout: args.layout as LayoutMode | undefined };\n        },\n        targetId: (args) => String(args.id),\n      },\n    ],\n  });\n}\n"]}