Update README: fix IPC examples, add onboarding section, TUI invite keys

- IPC examples now show correct ChatMessage shape (mid, to, sent_at),
  DM syntax, generate_invite command, and all event types
- New Onboarding section shows the Alice→Bob invite flow end-to-end
- TUI options table: add -join flag
- TUI key bindings: add ctrl+i and Esc

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -41,7 +41,7 @@ go run ./cmd/anchor -bind 127.0.0.1:17339
 # Terminal 2 — peer A
 go run ./cmd/daemon -alias alice -data-dir /tmp/waste-alice -ipc-port 17337 -anchor ws://127.0.0.1:17339/ws
 
-# Terminal 3 — peer B
+# Terminal 3 — peer B (or use --join with an invite from peer A)
 go run ./cmd/daemon -alias bob -data-dir /tmp/waste-bob -ipc-port 17341 -anchor ws://127.0.0.1:17339/ws
 ```
 
@@ -98,16 +98,29 @@ Everything is newline-delimited JSON. You can test with `nc 127.0.0.1 17337`.
 {"type":"join_network","network_name":"friends"}
 {"type":"leave_network"}
 {"type":"send_message","room":"general","body":"hi"}
+{"type":"send_message","room":"dm:<peer-hex>","body":"hey","to":"<peer-hex>"}
 {"type":"get_state"}
+{"type":"generate_invite"}
 ```
 
 **Events the daemon pushes:**
 ```jsonc
-{"type":"state_snapshot","local_peer":{...},"connected_peers":[...]}
+// Sent immediately on connect and in response to get_state
-{"type":"peer_connected","peer":{...}}
+{"type":"state_snapshot","local_peer":{"id":"<64-hex>","alias":"alice","public_key":"<64-hex>","created_at":"..."},"connected_peers":[...],"rooms":["general"]}
-{"type":"session_ready","peer_id":"<hex>","nick":"alice"}
+
-{"type":"message_received","message":{"from":"<hex>","body":"hi","room":"general"}}
+// Peer lifecycle
-{"type":"peer_disconnected","peer_id":"<hex>"}
+{"type":"peer_connected","peer":{"id":"<64-hex>","alias":"bob",...}}
+{"type":"session_ready","peer_id":"<64-hex>","nick":"bob"}
+{"type":"peer_disconnected","peer_id":"<64-hex>"}
+
+// Incoming message — mid is a 32-hex dedup token, to is set for DMs
+{"type":"message_received","message":{"mid":"<32-hex>","from":"<64-hex>","to":"<64-hex>","room":"general","body":"hi","sent_at":"..."}}
+
+// Invite generation response
+{"type":"invite_generated","invite":"waste:<base64>"}
+
+// Error
+{"type":"error","error_message":"..."}
 ```
 
 ## Crypto choices
@@ -125,6 +138,28 @@ Replaces WASTE's original Blowfish/PCBC (broken cipher mode) + RSA.
 > Peer IDs are 64-char lowercase hex (Ed25519 public key). Existing `identity.json` files
 > on disk are unaffected — only the over-the-wire representation changed from base64url.
 
+## Onboarding a new peer
+
+Alice is already on the network and wants to add Bob.
+
+**Alice generates an invite** (from the TUI with `Ctrl+I`, or via IPC directly):
+```bash
+echo '{"type":"generate_invite"}' | nc 127.0.0.1 17337
+# → {"type":"invite_generated","invite":"waste:eyJhbmNob3IiOiJ3czovL..."}
+```
+
+**Bob starts his daemon using the invite** — the `--join` flag sets the anchor URL and auto-joins the network:
+```bash
+go run ./cmd/daemon -alias bob -data-dir ~/.waste-bob --join 'waste:eyJhbmNob3IiOiJ3czovL...'
+```
+
+**Bob opens the TUI** — `--join` also accepts the invite to skip the `-network` flag:
+```bash
+go run ./cmd/tui --join 'waste:eyJhbmNob3IiOiJ3czovL...'
+```
+
+The invite encodes the anchor URL and network name as a `waste:` URI. Share it over Signal, email, or any side channel — the anchor never sees plaintext messages, so the invite leaking to a third party only lets them join the same network (which is by design: same network = mutual trust).
+
 ## Terminal UI
 
 Start the daemon first (see Getting started above), then:
@@ -137,7 +172,8 @@ Options:
 
 | Flag | Default | Description |
 |---|---|---|
-| `-network` | *(required)* | Network name to join on startup |
+| `-network` | *(required unless -join)* | Network name to join on startup |
+| `-join` | — | `waste:` invite string — sets the network name automatically |
 | `-ipc` | `17337` | Daemon IPC port |
 
 **Layout:**
@@ -153,7 +189,7 @@ Options:
 ╰─────────────────────────────────────────────────────────────╯
 ```
 
-**Key bindings:** `Tab` / `Shift+Tab` — switch rooms · `PgUp` / `PgDn` — scroll · `Enter` — send · `Ctrl+C` — quit
+**Key bindings:** `Tab` / `Shift+Tab` — switch rooms · `PgUp` / `PgDn` — scroll · `Enter` — send · `Ctrl+I` — generate invite · `Esc` — close invite overlay · `Ctrl+C` — quit
 
 ## Testing