feat: add loop, schedule, and chat CLI commands (#149)

* Add metrics collection and terminal performance tests

* feat: add loop, schedule, and chat commands with slash-namespaced RPC

Introduce three new server-side features with CLI command groups:

- `paseo loop` — iterative agent execution with verify-check/verify-prompt
- `paseo schedule` — recurring tasks on interval or cron cadence
- `paseo chat` — chat rooms for agent-to-agent coordination

All features use new slash-namespaced RPC methods (e.g. `loop/run`,
`schedule/create`, `chat/post`) instead of flat message types, backed
by file-based persistence and wired through the existing WebSocket
session dispatch.

* test: stabilize loop schedule chat rollout

packages/cli/src/commands/chat/post.ts

@@ -0,0 +1,39 @@
+import type { Command } from "commander";
+import type { SingleResult } from "../../output/index.js";
+import {
+  connectChatClient,
+  toChatCommandError,
+  type ChatCommandOptions,
+} from "./shared.js";
+import { chatMessageSchema, type ChatMessageRow, toChatMessageRow } from "./schema.js";
+
+export interface ChatPostOptions extends ChatCommandOptions {
+  replyTo?: string;
+  mention?: string[];
+}
+
+export async function runPostCommand(
+  room: string,
+  body: string,
+  options: ChatPostOptions,
+  _command: Command,
+): Promise<SingleResult<ChatMessageRow>> {
+  const { client } = await connectChatClient(options.host);
+  try {
+    const payload = await client.postChatMessage({
+      room,
+      body,
+      replyToMessageId: options.replyTo,
+      mentionAgentIds: options.mention ?? [],
+    });
+    return {
+      type: "single",
+      data: toChatMessageRow(payload.message!),
+      schema: chatMessageSchema,
+    };
+  } catch (err) {
+    throw toChatCommandError("CHAT_POST_FAILED", "post chat message", err);
+  } finally {
+    await client.close().catch(() => {});
+  }
+}