docs(marketing): add Discord adapter announcement draft (issue #1183)

Announcement copy for PR #656 — Discord adapter shipped.
Platforms: Discord, Reddit r/LocalLLama, dev.to.
Coordination note: thread #1182 timing TBD — flag for Social Media Brand.

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

docs/marketing/campaigns/discord-adapter-announcement/announcement.md

@@ -0,0 +1,100 @@
+# Discord Adapter Announcement — PR #656 / Issue #1183
+
+**Status:** DRAFT — needs Social Media Brand review before posting
+**Platforms:** Discord, Reddit (r/LocalLLama, r/MachineLearning), dev.to
+**Coordination:** Thread #1182 timing TBD — flag for Social Media Brand
+
+---
+
+## Announcement Copy
+
+**Molecule AI Discord adapter is live — PR #656 merged.**
+
+Your Molecule AI workspace can now connect to Discord. Here's what shipped:
+
+**Send messages to Discord**
+→ Configure a Discord Incoming Webhook (no bot token needed for outbound)
+→ Your workspace agent sends messages to any Discord channel via webhook
+→ 2000-character chunking handled automatically
+
+**Receive slash commands from Discord**
+→ Register your Discord app's Interactions endpoint with Molecule AI
+→ Slash commands like `/ask what's the status?` route directly to your workspace agent
+→ Works in servers and DMs — username and channel are passed through as metadata
+
+**Security:** Webhook tokens are never logged — regression-tested in PR #659.
+
+**Setup:** One webhook URL. Three lines of config. No separate bot account required for outbound.
+
+→ [Docs: Social Channels](/docs/agent-runtime/social-channels#discord-setup)
+→ [Docs: Discord Adapter source](/workspace-server/internal/channels/discord.go)
+
+---
+
+## Short Version (for Reddit / dev.to title)
+
+> Molecule AI workspaces can now connect to Discord — send messages and receive slash commands via a webhook. No bot token needed for outbound. PR #656 merged.
+
+---
+
+## Dev.to Post Body
+
+Molecule AI workspaces now ship with a Discord adapter — giving your AI agents a presence in Discord servers.
+
+**What you can do:**
+- Send messages to any Discord channel from your workspace agent (webhook-based, no bot token needed for outbound)
+- Receive slash commands — `/ask`, `/help`, `/status` — and route them to your workspace agent
+- Works in servers and DMs
+- 2000-character message chunking handled automatically
+- Webhook tokens are never logged (security fix in PR #659)
+
+**Configuration:**
+
+```bash
+curl -X POST http://localhost:8080/workspaces/${WORKSPACE_ID}/channels \
+  -H 'Authorization: Bearer ${TOKEN}' \
+  -H 'Content-Type: application/json' \
+  -d '{
+    "channel_type": "discord",
+    "config": {
+      "webhook_url": "https://discord.com/api/webhooks/YOUR_WEBHOOK_ID/YOUR_WEBHOOK_TOKEN"
+    }
+  }'
+```
+
+Or connect via the Canvas UI — Channels tab → + Connect → Discord.
+
+**Architecture:**
+- Outbound: Discord Incoming Webhooks (HTTP POST, no long-polling)
+- Inbound: Discord Interactions endpoint (slash commands and message components)
+- No separate bot token required for outbound-only setups
+
+Full docs: [Social Channels guide](/docs/agent-runtime/social-channels)
+
+GitHub: [PR #656 — Discord adapter](https://github.com/Molecule-AI/molecule-core/pull/656)
+
+---
+
+## Discord Message (for posting in Molecule AI's own Discord server)
+
+**Molecule AI Discord Adapter is live! 🎉**
+
+Your workspace can now connect to Discord — send messages to channels and receive slash commands from users.
+
+**What you can do:**
+→ Send notifications, summaries, or AI-generated responses to any Discord channel
+→ Users interact with your agent via slash commands (e.g. `/ask <question>`)
+→ Works in servers and DMs — no separate bot token needed for outbound
+
+**How to connect:**
+1. Create a Discord webhook (Channel → Integrations → Webhooks)
+2. Add it to your workspace: Channels tab → + Connect → Discord
+3. Done — your agent can now send to that channel
+
+For slash commands inbound, point your Discord app's Interactions URL at `POST /webhooks/discord` on your platform.
+
+Docs: docs/agent-runtime/social-channels
+
+---
+
+*Draft by Content Marketer 2026-04-20 — for Social Media Brand review before publishing*