feat(nostr): add NIP-29 group chat support for Buzz channels

Cargo.toml

@@ -250,6 +250,7 @@ jsonwebtoken       = { features = ["aws_lc_rs"], version = "10" }
 llama-cpp-2        = "0.1"
 matrix-sdk         = { default-features = false, features = ["e2e-encryption", "markdown", "native-tls", "sqlite"], version = "0.16" }
 mockito            = "1.7"
+nostr-relay-builder = { version = "0.44" }
 nostr-sdk          = { features = ["nip04", "nip44", "nip59"], version = "0.44" }
 open               = "5.3"
 rand               = "0.10"

README.md

@@ -121,7 +121,7 @@ Verify releases with `gh attestation verify <artifact> -R moltis-org/moltis` or
 ## Features
 
 - **AI Gateway** — Multi-provider LLM support (OpenAI Codex, GitHub Copilot, Local), streaming responses, agent loop with sub-agent delegation, session modes, parallel tool execution
-- **Communication** — Web UI, Telegram, Signal, Microsoft Teams, Discord, API access, voice I/O (8 TTS + 7 STT providers), mobile PWA with push notifications
+- **Communication** — Web UI, Telegram, Signal, Microsoft Teams, Discord, Nostr DMs + NIP-29 group chat (incl. Block's Buzz channels), API access, voice I/O (8 TTS + 7 STT providers), mobile PWA with push notifications
 - **Memory & Recall** — Per-agent memory workspaces, embeddings-powered long-term memory, hybrid vector + full-text search, session persistence with auto-compaction, cross-session recall, Cursor-compatible project context, context-file safety scanning
 - **Safer Agent Editing** — Automatic checkpoints before built-in skill and memory mutations, restore tooling, session branching
 - **Extensibility** — MCP servers (stdio + HTTP/SSE), skill system, 15 lifecycle hook events with circuit breaker, destructive command guard

crates/config/src/template.rs

@@ -830,6 +830,23 @@ port = {port}                           # Port number (auto-generated for this i
 # otp_self_approval = true
 # otp_cooldown_secs = 300
 
+# Example Nostr account. Handles NIP-04/NIP-59 encrypted DMs and, when `groups`
+# is set, NIP-29 group chat on Buzz-style relays (https://github.com/block/buzz).
+# [channels.nostr.my-bot]
+# secret_key = "nsec1..."
+# relays = ["wss://relay.damus.io", "wss://relay.nostr.band", "wss://nos.lol"]
+# dm_policy = "allowlist"
+# allowed_pubkeys = ["npub1..."]
+# # Buzz / NIP-29 group chat: the `h`-tag group ids the bot joins. Requires a
+# # relay that supports NIP-29 + NIP-42 (Buzz relays do). Empty = DM-only.
+# # This list is also the allowlist — messages for any other group are dropped.
+# groups = ["buzz-general"]
+# group_mention_mode = "mention"  # mention (p-tagged only) | always | none
+# # Dialect for bot-initiated group messages. Both kinds are always read and
+# # replies mirror the message they answer; set buzz_v2 on a Buzz relay.
+# group_message_kind = "nip29"    # nip29 (kind:9) | buzz_v2 (kind:40002)
+# group_ack_reactions = true      # 👀 on receipt, ✅/❌ on completion (NIP-25)
+
 # See docs or defaults.toml for full channel configuration examples
 # (WhatsApp, Telegram, Teams, Discord, Slack, Matrix, Nostr, Signal).
 

crates/nostr/Cargo.toml

@@ -24,7 +24,8 @@ default = []
 metrics = ["dep:moltis-metrics"]
 
 [dev-dependencies]
-tokio = { workspace = true }
+nostr-relay-builder = { workspace = true }
+tokio               = { workspace = true }
 
 [lints]
 workspace = true