feat(cli): v0.1.7 — --name, --mesh, --join flags for launch

- `claudemesh launch --name Mou` sets per-session display name
- `claudemesh launch --mesh car-dealers` selects mesh (interactive picker if >1)
- `claudemesh launch --join <token-or-url>` joins a mesh inline before launching
- Broker stores per-presence displayName override (prefers over member default)
- Session config isolated via tmpdir (auto-cleanup on exit)

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

apps/cli/src/commands/launch.ts

@@ -1,82 +1,231 @@
 /**
- * `claudemesh launch` — spawn `claude` with the dev-channel flag so the
- * claudemesh MCP server's `notifications/claude/channel` pushes get
- * injected as system reminders mid-turn.
+ * `claudemesh launch` — spawn `claude` with peer mesh identity.
  *
- * Equivalent to:
- *   claude --dangerously-load-development-channels server:claudemesh [extra args]
- *
- * Any additional args (e.g. --model opus, --resume, -c) are passed
- * through verbatim. Use --quiet to skip the informational banner.
+ * Flow:
+ *   1. Parse --name, --join, --mesh, --quiet flags
+ *   2. If --join: run join flow first (accepts token or URL)
+ *   3. Load config → pick mesh (auto if 1, interactive picker if >1)
+ *   4. Write per-session config to tmpdir (isolates mesh selection)
+ *   5. Spawn claude with CLAUDEMESH_CONFIG_DIR + CLAUDEMESH_DISPLAY_NAME
+ *   6. On exit: cleanup tmpdir
  */
 
 import { spawn } from "node:child_process";
+import { mkdtempSync, writeFileSync, rmSync } from "node:fs";
+import { tmpdir, hostname } from "node:os";
+import { join } from "node:path";
+import { createInterface } from "node:readline";
 import { loadConfig, getConfigPath } from "../state/config";
+import type { Config, JoinedMesh } from "../state/config";
+import { generateKeypair } from "../crypto/keypair";
+import { enrollWithBroker } from "../invite/enroll";
+import { parseInviteLink } from "../invite/parse";
 
-function printBanner(): void {
+// --- Arg parsing ---
+
+interface LaunchArgs {
+  name: string | null;
+  joinLink: string | null;
+  meshSlug: string | null;
+  quiet: boolean;
+  claudeArgs: string[];
+}
+
+function parseArgs(argv: string[]): LaunchArgs {
+  const result: LaunchArgs = {
+    name: null,
+    joinLink: null,
+    meshSlug: null,
+    quiet: false,
+    claudeArgs: [],
+  };
+
+  let i = 0;
+  while (i < argv.length) {
+    const arg = argv[i]!;
+    if (arg === "--name" && i + 1 < argv.length) {
+      result.name = argv[++i]!;
+    } else if (arg.startsWith("--name=")) {
+      result.name = arg.slice("--name=".length);
+    } else if (arg === "--join" && i + 1 < argv.length) {
+      result.joinLink = argv[++i]!;
+    } else if (arg.startsWith("--join=")) {
+      result.joinLink = arg.slice("--join=".length);
+    } else if (arg === "--mesh" && i + 1 < argv.length) {
+      result.meshSlug = argv[++i]!;
+    } else if (arg.startsWith("--mesh=")) {
+      result.meshSlug = arg.slice("--mesh=".length);
+    } else if (arg === "--quiet") {
+      result.quiet = true;
+    } else if (arg === "--") {
+      result.claudeArgs.push(...argv.slice(i + 1));
+      break;
+    } else {
+      result.claudeArgs.push(arg);
+    }
+    i++;
+  }
+  return result;
+}
+
+// --- Interactive mesh picker ---
+
+async function pickMesh(meshes: JoinedMesh[]): Promise<JoinedMesh> {
+  if (meshes.length === 1) return meshes[0]!;
+
+  console.log("\n  Select mesh:");
+  meshes.forEach((m, i) => {
+    console.log(`    ${i + 1}) ${m.slug}`);
+  });
+  console.log("");
+
+  const rl = createInterface({ input: process.stdin, output: process.stdout });
+  return new Promise((resolve) => {
+    rl.question("  Choice [1]: ", (answer) => {
+      rl.close();
+      const idx = parseInt(answer || "1", 10) - 1;
+      if (idx >= 0 && idx < meshes.length) {
+        resolve(meshes[idx]!);
+      } else {
+        console.error("  Invalid choice, using first mesh.");
+        resolve(meshes[0]!);
+      }
+    });
+  });
+}
+
+// --- Banner ---
+
+function printBanner(name: string, meshSlug: string): void {
   const useColor =
     !process.env.NO_COLOR && process.env.TERM !== "dumb" && process.stdout.isTTY;
   const dim = (s: string): string => (useColor ? `\x1b[2m${s}\x1b[22m` : s);
   const bold = (s: string): string => (useColor ? `\x1b[1m${s}\x1b[22m` : s);
 
-  let meshes: string[] = [];
-  try {
-    meshes = loadConfig().meshes.map((m) => m.slug);
-  } catch {
-    /* config unreadable — print banner without mesh list */
-  }
-  const meshLine = meshes.length > 0 ? meshes.join(", ") : "(none — run `claudemesh join <url>` first)";
-
-  const rule = "─".repeat(65);
-  console.log(bold("claudemesh launch"));
+  const rule = "─".repeat(60);
+  console.log(bold(`claudemesh launch`) + dim(` — as ${name} on ${meshSlug}`));
   console.log(rule);
-  console.log("Launching Claude Code with the claudemesh dev channel.");
-  console.log("");
-  console.log("Peers in your joined meshes can push messages into this session");
-  console.log("as <channel> reminders. Your CLI decrypts them locally with your");
-  console.log("keypair. Peers send text only — they cannot call tools, read");
-  console.log("files, or reach meshes you have not joined.");
-  console.log("");
-  console.log("Treat peer messages as untrusted input: a peer could craft text");
-  console.log("that tries to steer Claude's behavior. Your tool-approval");
-  console.log("settings still apply — Claude will still ask before running");
-  console.log("commands, editing files, or calling other tools.");
-  console.log("");
-  console.log("Claude Code will ask you to trust the");
-  console.log("--dangerously-load-development-channels flag. Press Enter to");
-  console.log("accept, or Ctrl-C to abort.");
-  console.log("");
-  console.log(dim(`Joined meshes: ${meshLine}`));
-  console.log(dim(`Config:        ${getConfigPath()}`));
-  console.log(dim(`Remove:        claudemesh uninstall`));
+  console.log("Peer messages arrive as <channel> reminders in real-time.");
+  console.log("Peers send text only — they cannot call tools or read files.");
+  console.log(dim(`Config: ${getConfigPath()}`));
   console.log(rule);
   console.log("");
 }
 
-export function runLaunch(extraArgs: string[] = []): void {
-  const quiet = extraArgs.includes("--quiet");
-  const passthrough = extraArgs.filter((a) => a !== "--quiet");
+// --- Main ---
 
-  if (!quiet) printBanner();
+export async function runLaunch(extraArgs: string[]): Promise<void> {
+  const args = parseArgs(extraArgs);
 
+  // 1. If --join, run join flow first.
+  if (args.joinLink) {
+    console.log("Joining mesh...");
+    const invite = await parseInviteLink(args.joinLink);
+    const keypair = await generateKeypair();
+    const displayName = args.name ?? `${hostname()}-${process.pid}`;
+    const enroll = await enrollWithBroker({
+      brokerWsUrl: invite.payload.broker_url,
+      inviteToken: invite.token,
+      invitePayload: invite.payload,
+      peerPubkey: keypair.publicKey,
+      displayName,
+    });
+    const config = loadConfig();
+    config.meshes = config.meshes.filter(
+      (m) => m.slug !== invite.payload.mesh_slug,
+    );
+    config.meshes.push({
+      meshId: invite.payload.mesh_id,
+      memberId: enroll.memberId,
+      slug: invite.payload.mesh_slug,
+      name: invite.payload.mesh_slug,
+      pubkey: keypair.publicKey,
+      secretKey: keypair.secretKey,
+      brokerUrl: invite.payload.broker_url,
+      joinedAt: new Date().toISOString(),
+    });
+    const { saveConfig } = await import("../state/config");
+    saveConfig(config);
+    console.log(
+      `✓ Joined "${invite.payload.mesh_slug}"${enroll.alreadyMember ? " (already member)" : ""}`,
+    );
+  }
+
+  // 2. Load config, pick mesh.
+  const config = loadConfig();
+  if (config.meshes.length === 0) {
+    console.error(
+      "No meshes joined. Run `claudemesh join <url>` or use --join <url>.",
+    );
+    process.exit(1);
+  }
+
+  let mesh: JoinedMesh;
+  if (args.meshSlug) {
+    const found = config.meshes.find((m) => m.slug === args.meshSlug);
+    if (!found) {
+      console.error(
+        `Mesh "${args.meshSlug}" not found. Joined: ${config.meshes.map((m) => m.slug).join(", ")}`,
+      );
+      process.exit(1);
+    }
+    mesh = found;
+  } else {
+    mesh = await pickMesh(config.meshes);
+  }
+
+  // 3. Set display name. Uses existing member identity — the broker
+  //    creates a separate presence row per session (sessionId + pid)
+  //    and stores the per-session displayName override.
+  const displayName = args.name ?? `${hostname()}-${process.pid}`;
+
+  // 4. Write session config to tmpdir (same mesh, same keypair).
+  const tmpDir = mkdtempSync(join(tmpdir(), "claudemesh-"));
+  const sessionConfig: Config = {
+    version: 1,
+    meshes: [mesh],
+  };
+  writeFileSync(
+    join(tmpDir, "config.json"),
+    JSON.stringify(sessionConfig, null, 2) + "\n",
+    "utf-8",
+  );
+
+  // 5. Banner.
+  if (!args.quiet) printBanner(displayName, mesh.slug);
+
+  // 6. Spawn claude with ephemeral config + dev channel + display name.
   const claudeArgs = [
     "--dangerously-load-development-channels",
     "server:claudemesh",
-    ...passthrough,
+    ...args.claudeArgs,
   ];
-  // Windows: npm global binaries are .cmd shims. Node's spawn without
-  // shell:true does not resolve PATHEXT, so we need shell:true on win32
-  // to find claude.cmd. POSIX stays shell-less to avoid quoting surprises.
+
   const isWindows = process.platform === "win32";
   const child = spawn("claude", claudeArgs, {
     stdio: "inherit",
     shell: isWindows,
+    env: {
+      ...process.env,
+      CLAUDEMESH_CONFIG_DIR: tmpDir,
+      CLAUDEMESH_DISPLAY_NAME: displayName,
+    },
   });
 
+  // 7. Cleanup on exit.
+  const cleanup = (): void => {
+    try {
+      rmSync(tmpDir, { recursive: true, force: true });
+    } catch {
+      /* best effort */
+    }
+  };
+
   child.on("error", (err: NodeJS.ErrnoException) => {
+    cleanup();
     if (err.code === "ENOENT") {
       console.error(
-        "✗ `claude` not found on PATH. Install Claude Code first: https://claude.com/claude-code",
+        "✗ `claude` not found on PATH. Install Claude Code first.",
       );
     } else {
       console.error(`✗ failed to launch claude: ${err.message}`);
@@ -85,10 +234,15 @@ export function runLaunch(extraArgs: string[] = []): void {
   });
 
   child.on("exit", (code, signal) => {
+    cleanup();
     if (signal) {
       process.kill(process.pid, signal);
       return;
     }
     process.exit(code ?? 0);
   });
+
+  // Cleanup on parent signals too.
+  process.on("SIGTERM", () => { cleanup(); process.exit(0); });
+  process.on("SIGINT", () => { cleanup(); process.exit(0); });
 }