feat(cli): scaffold @claudemesh/cli MCP client package (stubs)

The user-facing tool. Two invocation modes:
  - `claudemesh mcp`           → MCP server (stdio), consumed by Claude Code
  - `claudemesh <subcommand>`  → human CLI

Layout:
  apps/cli/
  ├── package.json       bin: { claudemesh: ./src/index.ts }
  ├── README.md          install + usage
  └── src/
      ├── index.ts       dispatcher (mcp | install | join | list | leave | --help)
      ├── env.ts         CLAUDEMESH_BROKER_URL, CONFIG_DIR, DEBUG
      ├── mcp/
      │   ├── server.ts  MCP stdio server with 5 tools
      │   ├── tools.ts   tool schemas (send_message, list_peers,
      │   │              check_messages, set_summary, set_status)
      │   └── types.ts
      ├── ws/client.ts   broker connection (stub for 15b)
      ├── state/config.ts ~/.claudemesh/config.json (joined meshes + keys)
      └── commands/
          ├── install.ts print `claude mcp add ...` instruction
          ├── join.ts    parse ic://join/... (stub, Step 17)
          ├── list.ts    show joined meshes
          └── leave.ts   remove mesh from local config

Tool stubs return "not connected, run `claudemesh join <invite-link>`"
errors until 15b wires the WS client.

Verified:
- `bun src/index.ts --help` → prints usage
- `bun src/index.ts install` → prints MCP add command with resolved path
- `bun src/index.ts list` → "No meshes joined yet"
- `bun src/index.ts mcp` (via stdin) → returns tools/list with all 5 tools

Deps: @modelcontextprotocol/sdk, ws, libsodium-wrappers, zod.
Lockfile regenerated in the same commit per claudemesh-3's flag —
avoids breaking Coolify's --frozen-lockfile deploys.

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

apps/cli/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "@claudemesh/cli",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "bin": {
+    "claudemesh": "./src/index.ts"
+  },
+  "scripts": {
+    "clean": "git clean -xdf .cache .turbo dist node_modules",
+    "dev": "bun --hot src/index.ts",
+    "start": "bun src/index.ts",
+    "format": "prettier --check . --ignore-path ../../.gitignore",
+    "lint": "eslint",
+    "test": "vitest run",
+    "typecheck": "tsc --noEmit"
+  },
+  "prettier": "@turbostarter/prettier-config",
+  "dependencies": {
+    "@modelcontextprotocol/sdk": "1.27.1",
+    "libsodium-wrappers": "0.7.15",
+    "ws": "8.20.0",
+    "zod": "catalog:"
+  },
+  "devDependencies": {
+    "@turbostarter/eslint-config": "workspace:*",
+    "@turbostarter/prettier-config": "workspace:*",
+    "@turbostarter/tsconfig": "workspace:*",
+    "@turbostarter/vitest-config": "workspace:*",
+    "@types/libsodium-wrappers": "0.7.14",
+    "@types/ws": "8.5.13",
+    "eslint": "catalog:",
+    "prettier": "catalog:",
+    "typescript": "catalog:",
+    "vitest": "catalog:"
+  }
+}