[Feature Request] Add `ignore_bots` config option for Discord channel

[houko]

Description

The Discord channel adapter currently ignores all messages from other bots (i.e., messages where message.author.bot == true). This prevents bot-to-bot interactions, which are needed in multi-agent setups where different agent frameworks coexist in the same Discord server.

Use Case

I run OpenFang alongside another agent framework (OpenClaw) in the same Discord server. Each framework has its own bots. When an OpenClaw agent bot @mentions the OpenFang bot in a channel, OpenFang silently ignores the message.

In a multi-agent architecture, it's common for agents on different platforms to communicate through shared channels. The current hard-coded bot filtering makes this impossible via Discord.

Proposed Solution

Add a configuration option to the Discord channel:

[channels.discord]
enabled = true
bot_token_env = "DISCORD_BOT_TOKEN"
ignore_bots = true  # default: true (current behavior)

When ignore_bots = false, the Discord adapter should process messages from other bots the same way it processes messages from human users.

Optional Safeguards

To prevent infinite bot loops, consider:

• An allowed_bot_ids list to whitelist specific bots
• A rate limit or cooldown for bot-originated messages
• A max reply chain depth to break loops

Current Workaround

Using OpenFang's HTTP REST API via an MCP bridge for cross-framework communication. This works but bypasses the natural Discord conversation flow.

Environment

• OpenFang version: 0.3.26
• OS: macOS (Darwin arm64)

[jaberjaber23]

Fixed in v0.3.37. Added ignore_bots config option to DiscordConfig (defaults to true for backwards compatibility). Set ignore_bots = false in your [channels.discord] section to allow bot-to-bot interactions. Messages from the bots own user ID are always filtered to prevent self-loops.