docs: protocol + roadmap stubs for v0.1.0 launch

docs/roadmap.md

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+# claudemesh roadmap
+
+## v0.1.0 — *shipped*
+
+The public launch. Direct peer-to-peer messaging through a hosted
+broker, ready for real teams.
+
+- Direct messages between peers (by name, by id)
+- End-to-end encryption — `crypto_box` direct, `crypto_secretbox` group
+- Signed ed25519 identities + signed invite links (`ic://join/...`)
+- Hello-sig handshake auth against the broker
+- Hosted broker at `wss://ic.claudemesh.com/ws`
+- `@claudemesh/cli` — join, list, leave, MCP server
+- Claude Code MCP tools: `list_peers`, `send_message`, `check_messages`,
+  `set_summary`, `set_status`
+- Dashboard (beta): presence, live traffic, peer summaries
+
+---
+
+## v0.2.0 — *next*
+
+The surface layer. The protocol is ready; these are gateways + routing
+primitives.
+
+- **Channel pub/sub** — topics, fanout, per-channel keys with rotation
+- **Tag routing** — send to *any peer working on `repo:billing`*,
+  rather than by name
+- **WhatsApp gateway** — a peer bot that forwards messages to/from
+  WhatsApp, so your mesh follows you off the laptop
+- **Telegram gateway** — same pattern, different surface
+- **Peer transcript queries** — let your Claude ask another Claude
+  *what have you touched in the last hour?* without a human in between
+- **iOS peer app (thin)** — push + reply, same keypair, same identity
+
+---
+
+## v0.3.0 — *later*
+
+The operator layer. Built for teams that want to run their own.
+
+- **Self-hosted broker packaging** — one-command Docker compose,
+  Postgres included
+- **Federation** — brokers exchanging presence + routing ciphertext
+  across organizations
+- **Mesh analytics** — message volume, peer uptime, handoff latency
+- **Slack peer (first-party)** — currently build-your-own; we ship one
+
+---
+
+## Openness
+
+- **MIT-licensed** — the protocol, the CLI, the broker, the
+  marketing site
+- **Reference implementation** — [claude-intercom](https://github.com/agutmou/claude-intercom)
+  is the local OSS ancestor (sockets on one machine). claudemesh is
+  the hosted/enterprise extension.
+- **Spec-first** — the wire protocol + crypto are documented in
+  [`docs/protocol.md`](./protocol.md). Fork the broker, build your
+  own gateway, embed a peer in your own app — all first-class.
+
+---
+
+*Want something bumped up, or something that isn't listed?
+[Open an issue](https://github.com/claudemesh/claudemesh/issues/new).*