Add scripts/bind-discord.sh — interactive Discord channel binding generator

[Copilot]

Generating the Discord channel binding config for openclaw.template.json required manually looking up guild/channel IDs — the most error-prone step in deployment. This script automates the full lookup and JSON generation.

scripts/bind-discord.sh

• Accepts <bot-token> [--all]
• Fetches guilds via GET /users/@me/guilds, then text channels (type 0 only) per guild via GET /guilds/{id}/channels
• Interactive mode (stderr is a TTY): numbered channel list, space-separated selection or all
• Non-interactive / --all: dumps every text channel without prompting
• Stdout is pure JSON; all progress output goes to stderr — pipe-safe
• DISCORD_API env var override for testability

$ ./scripts/bind-discord.sh "$DISCORD_BOT_TOKEN" --all
[
  {
    "guildId": "123456789",
    "guildName": "My Server",
    "channelId": "987654321",
    "channelName": "general"
  }
]

Paste the output array as channels inside the discord block of openclaw.template.json.

scripts/test-bind-discord.sh

Mock-curl test suite (12 cases) covering: argument validation, dependency checks, HTTP 401 handling, empty guild/channel error paths, voice channel exclusion, JSON field correctness, stderr isolation, and multi-guild collection.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Discord channel binding generator (bind-discord.sh)</issue_title>
<issue_description>The Discord openclaw.json channel binding config is the most error-prone manual step in deployment.

New script: scripts/bind-discord.sh <bot-token> that:

1. Calls Discord API to fetch server list + channels
2. Presents interactive selection or dumps all
3. Generates the channel binding JSON block for openclaw.template.json

Eliminates hand-editing JSON channel IDs.

Implementation notes: no separate validation report docs in PR, keep docs minimal.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Discord channel binding generator (bind-discord.sh) #14

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